1 | /* Top level of GNU C compiler |
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2 | Copyright (C) 1987, 88, 89, 92, 93, 94, 1995 Free Software Foundation, Inc. |
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3 | |
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4 | This file is part of GNU CC. |
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5 | |
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6 | GNU CC is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | GNU CC is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License |
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17 | along with GNU CC; see the file COPYING. If not, write to |
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18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | /* This is the top level of cc1/c++. |
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22 | It parses command args, opens files, invokes the various passes |
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23 | in the proper order, and counts the time used by each. |
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24 | Error messages and low-level interface to malloc also handled here. */ |
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25 | |
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26 | #include "config.h" |
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27 | #ifdef __STDC__ |
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28 | #include <stdarg.h> |
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29 | #else |
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30 | #include <varargs.h> |
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31 | #endif |
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32 | #include <stdio.h> |
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33 | #include <signal.h> |
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34 | #include <setjmp.h> |
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35 | #include <sys/types.h> |
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36 | #include <ctype.h> |
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37 | #include <sys/stat.h> |
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38 | |
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39 | #ifndef _WIN32 |
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40 | #ifdef USG |
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41 | #undef FLOAT |
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42 | #include <sys/param.h> |
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43 | /* This is for hpux. It is a real screw. They should change hpux. */ |
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44 | #undef FLOAT |
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45 | #include <sys/times.h> |
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46 | #include <time.h> /* Correct for hpux at least. Is it good on other USG? */ |
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47 | #undef FFS /* Some systems define this in param.h. */ |
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48 | #else |
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49 | #ifndef VMS |
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50 | #include <sys/time.h> |
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51 | #include <sys/resource.h> |
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52 | #endif |
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53 | #endif |
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54 | #endif |
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55 | |
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56 | #include "input.h" |
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57 | #include "tree.h" |
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58 | #include "rtl.h" |
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59 | #include "flags.h" |
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60 | #include "insn-attr.h" |
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61 | #include "defaults.h" |
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62 | #include "output.h" |
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63 | #include "bytecode.h" |
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64 | #include "bc-emit.h" |
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65 | |
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66 | #ifdef XCOFF_DEBUGGING_INFO |
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67 | #include "xcoffout.h" |
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68 | #endif |
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69 | |
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70 | #ifdef VMS |
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71 | /* The extra parameters substantially improve the I/O performance. */ |
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72 | static FILE * |
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73 | vms_fopen (fname, type) |
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74 | char * fname; |
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75 | char * type; |
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76 | { |
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77 | /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two |
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78 | fixed arguments, which matches ANSI's specification but not VAXCRTL's |
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79 | pre-ANSI implementation. This hack circumvents the mismatch problem. */ |
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80 | FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen; |
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81 | |
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82 | if (*type == 'w') |
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83 | return (*vmslib_fopen) (fname, type, "mbc=32", |
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84 | "deq=64", "fop=tef", "shr=nil"); |
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85 | else |
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86 | return (*vmslib_fopen) (fname, type, "mbc=32"); |
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87 | } |
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88 | #define fopen vms_fopen |
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89 | #endif /* VMS */ |
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90 | |
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91 | #ifndef DEFAULT_GDB_EXTENSIONS |
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92 | #define DEFAULT_GDB_EXTENSIONS 1 |
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93 | #endif |
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94 | |
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95 | extern int rtx_equal_function_value_matters; |
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96 | |
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97 | #if ! (defined (VMS) || defined (OS2)) |
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98 | extern char **environ; |
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99 | #endif |
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100 | extern char *version_string, *language_string; |
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101 | |
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102 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
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103 | to ASM_FINISH_DECLARE_OBJECT. */ |
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104 | |
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105 | extern int size_directive_output; |
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106 | extern tree last_assemble_variable_decl; |
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107 | |
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108 | extern void init_lex (); |
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109 | extern void init_decl_processing (); |
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110 | extern void init_obstacks (); |
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111 | extern void init_tree_codes (); |
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112 | extern void init_rtl (); |
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113 | extern void init_regs (); |
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114 | extern void init_optabs (); |
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115 | extern void init_stmt (); |
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116 | extern void init_reg_sets (); |
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117 | extern void dump_flow_info (); |
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118 | extern void dump_sched_info (); |
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119 | extern void dump_local_alloc (); |
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120 | |
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121 | void rest_of_decl_compilation (); |
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122 | void error_with_file_and_line PVPROTO((char *file, int line, char *s, ...)); |
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123 | void error_with_decl PVPROTO((tree decl, char *s, ...)); |
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124 | void error_for_asm PVPROTO((rtx insn, char *s, ...)); |
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125 | void error PVPROTO((char *s, ...)); |
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126 | void fatal PVPROTO((char *s, ...)); |
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127 | void warning_with_file_and_line PVPROTO((char *file, int line, char *s, ...)); |
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128 | void warning_with_decl PVPROTO((tree decl, char *s, ...)); |
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129 | void warning_for_asm PVPROTO((rtx insn, char *s, ...)); |
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130 | void warning PVPROTO((char *s, ...)); |
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131 | void pedwarn PVPROTO((char *s, ...)); |
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132 | void pedwarn_with_decl PVPROTO((tree decl, char *s, ...)); |
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133 | void pedwarn_with_file_and_line PVPROTO((char *file, int line, char *s, ...)); |
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134 | void sorry PVPROTO((char *s, ...)); |
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135 | void really_sorry PVPROTO((char *s, ...)); |
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136 | void fancy_abort (); |
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137 | #ifndef abort |
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138 | void abort (); |
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139 | #endif |
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140 | void set_target_switch (); |
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141 | static void print_switch_values (); |
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142 | static char *decl_name (); |
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143 | |
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144 | #ifdef __alpha |
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145 | extern char *sbrk (); |
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146 | #endif |
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147 | |
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148 | /* Name of program invoked, sans directories. */ |
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149 | |
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150 | char *progname; |
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151 | |
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152 | /* Copy of arguments to main. */ |
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153 | int save_argc; |
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154 | char **save_argv; |
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155 | |
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156 | /* Name of current original source file (what was input to cpp). |
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157 | This comes from each #-command in the actual input. */ |
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158 | |
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159 | char *input_filename; |
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160 | |
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161 | /* Name of top-level original source file (what was input to cpp). |
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162 | This comes from the #-command at the beginning of the actual input. |
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163 | If there isn't any there, then this is the cc1 input file name. */ |
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164 | |
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165 | char *main_input_filename; |
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166 | |
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167 | /* Stream for reading from the input file. */ |
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168 | |
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169 | FILE *finput; |
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170 | |
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171 | /* Current line number in real source file. */ |
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172 | |
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173 | int lineno; |
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174 | |
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175 | /* Stack of currently pending input files. */ |
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176 | |
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177 | struct file_stack *input_file_stack; |
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178 | |
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179 | /* Incremented on each change to input_file_stack. */ |
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180 | int input_file_stack_tick; |
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181 | |
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182 | /* FUNCTION_DECL for function now being parsed or compiled. */ |
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183 | |
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184 | extern tree current_function_decl; |
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185 | |
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186 | /* Name to use as base of names for dump output files. */ |
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187 | |
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188 | char *dump_base_name; |
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189 | |
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190 | /* Bit flags that specify the machine subtype we are compiling for. |
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191 | Bits are tested using macros TARGET_... defined in the tm.h file |
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192 | and set by `-m...' switches. Must be defined in rtlanal.c. */ |
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193 | |
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194 | extern int target_flags; |
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195 | |
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196 | /* Flags saying which kinds of debugging dump have been requested. */ |
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197 | |
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198 | int rtl_dump = 0; |
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199 | int rtl_dump_and_exit = 0; |
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200 | int jump_opt_dump = 0; |
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201 | int cse_dump = 0; |
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202 | int loop_dump = 0; |
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203 | int cse2_dump = 0; |
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204 | int flow_dump = 0; |
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205 | int combine_dump = 0; |
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206 | int sched_dump = 0; |
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207 | int local_reg_dump = 0; |
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208 | int global_reg_dump = 0; |
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209 | int sched2_dump = 0; |
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210 | int jump2_opt_dump = 0; |
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211 | int dbr_sched_dump = 0; |
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212 | int flag_print_asm_name = 0; |
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213 | int stack_reg_dump = 0; |
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214 | |
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215 | /* Name for output file of assembly code, specified with -o. */ |
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216 | |
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217 | char *asm_file_name; |
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218 | |
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219 | /* Value of the -G xx switch, and whether it was passed or not. */ |
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220 | int g_switch_value; |
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221 | int g_switch_set; |
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222 | |
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223 | /* Type(s) of debugging information we are producing (if any). |
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224 | See flags.h for the definitions of the different possible |
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225 | types of debugging information. */ |
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226 | enum debug_info_type write_symbols = NO_DEBUG; |
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227 | |
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228 | /* Level of debugging information we are producing. See flags.h |
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229 | for the definitions of the different possible levels. */ |
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230 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; |
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231 | |
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232 | /* Nonzero means use GNU-only extensions in the generated symbolic |
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233 | debugging information. */ |
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234 | /* Currently, this only has an effect when write_symbols is set to |
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235 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ |
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236 | int use_gnu_debug_info_extensions = 0; |
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237 | |
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238 | /* Nonzero means do optimizations. -O. |
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239 | Particular numeric values stand for particular amounts of optimization; |
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240 | thus, -O2 stores 2 here. However, the optimizations beyond the basic |
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241 | ones are not controlled directly by this variable. Instead, they are |
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242 | controlled by individual `flag_...' variables that are defaulted |
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243 | based on this variable. */ |
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244 | |
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245 | int optimize = 0; |
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246 | |
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247 | /* Number of error messages and warning messages so far. */ |
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248 | |
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249 | int errorcount = 0; |
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250 | int warningcount = 0; |
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251 | int sorrycount = 0; |
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252 | |
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253 | /* Flag to output bytecode instead of native assembler */ |
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254 | int output_bytecode = 0; |
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255 | |
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256 | /* Pointer to function to compute the name to use to print a declaration. */ |
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257 | |
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258 | char *(*decl_printable_name) (); |
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259 | |
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260 | /* Pointer to function to compute rtl for a language-specific tree code. */ |
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261 | |
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262 | struct rtx_def *(*lang_expand_expr) (); |
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263 | |
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264 | /* Pointer to function to finish handling an incomplete decl at the |
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265 | end of compilation. */ |
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266 | |
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267 | void (*incomplete_decl_finalize_hook) () = 0; |
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268 | |
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269 | /* Pointer to function for interim exception handling implementation. |
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270 | This interface will change, and it is only here until a better interface |
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271 | replaces it. */ |
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272 | |
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273 | void (*interim_eh_hook) PROTO((tree)); |
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274 | |
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275 | /* Nonzero if generating code to do profiling. */ |
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276 | |
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277 | int profile_flag = 0; |
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278 | |
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279 | /* Nonzero if generating code to do profiling on a line-by-line basis. */ |
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280 | |
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281 | int profile_block_flag; |
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282 | |
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283 | /* Nonzero for -pedantic switch: warn about anything |
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284 | that standard spec forbids. */ |
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285 | |
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286 | int pedantic = 0; |
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287 | |
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288 | /* Temporarily suppress certain warnings. |
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289 | This is set while reading code from a system header file. */ |
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290 | |
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291 | int in_system_header = 0; |
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292 | |
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293 | /* Nonzero means do stupid register allocation. |
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294 | Currently, this is 1 if `optimize' is 0. */ |
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295 | |
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296 | int obey_regdecls = 0; |
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297 | |
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298 | /* Don't print functions as they are compiled and don't print |
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299 | times taken by the various passes. -quiet. */ |
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300 | |
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301 | int quiet_flag = 0; |
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302 | |
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303 | /* -f flags. */ |
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304 | |
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305 | /* Nonzero means `char' should be signed. */ |
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306 | |
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307 | int flag_signed_char; |
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308 | |
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309 | /* Nonzero means give an enum type only as many bytes as it needs. */ |
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310 | |
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311 | int flag_short_enums; |
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312 | |
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313 | /* Nonzero for -fcaller-saves: allocate values in regs that need to |
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314 | be saved across function calls, if that produces overall better code. |
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315 | Optional now, so people can test it. */ |
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316 | |
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317 | #ifdef DEFAULT_CALLER_SAVES |
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318 | int flag_caller_saves = 1; |
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319 | #else |
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320 | int flag_caller_saves = 0; |
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321 | #endif |
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322 | |
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323 | /* Nonzero if structures and unions should be returned in memory. |
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324 | |
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325 | This should only be defined if compatibility with another compiler or |
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326 | with an ABI is needed, because it results in slower code. */ |
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327 | |
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328 | #ifndef DEFAULT_PCC_STRUCT_RETURN |
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329 | #define DEFAULT_PCC_STRUCT_RETURN 1 |
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330 | #endif |
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331 | |
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332 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
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333 | |
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334 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
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335 | |
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336 | /* Nonzero for -fforce-mem: load memory value into a register |
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337 | before arithmetic on it. This makes better cse but slower compilation. */ |
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338 | |
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339 | int flag_force_mem = 0; |
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340 | |
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341 | /* Nonzero for -fforce-addr: load memory address into a register before |
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342 | reference to memory. This makes better cse but slower compilation. */ |
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343 | |
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344 | int flag_force_addr = 0; |
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345 | |
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346 | /* Nonzero for -fdefer-pop: don't pop args after each function call; |
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347 | instead save them up to pop many calls' args with one insns. */ |
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348 | |
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349 | int flag_defer_pop = 0; |
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350 | |
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351 | /* Nonzero for -ffloat-store: don't allocate floats and doubles |
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352 | in extended-precision registers. */ |
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353 | |
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354 | int flag_float_store = 0; |
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355 | |
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356 | /* Nonzero for -fcse-follow-jumps: |
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357 | have cse follow jumps to do a more extensive job. */ |
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358 | |
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359 | int flag_cse_follow_jumps; |
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360 | |
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361 | /* Nonzero for -fcse-skip-blocks: |
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362 | have cse follow a branch around a block. */ |
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363 | int flag_cse_skip_blocks; |
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364 | |
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365 | /* Nonzero for -fexpensive-optimizations: |
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366 | perform miscellaneous relatively-expensive optimizations. */ |
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367 | int flag_expensive_optimizations; |
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368 | |
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369 | /* Nonzero for -fthread-jumps: |
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370 | have jump optimize output of loop. */ |
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371 | |
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372 | int flag_thread_jumps; |
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373 | |
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374 | /* Nonzero enables strength-reduction in loop.c. */ |
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375 | |
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376 | int flag_strength_reduce = 0; |
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377 | |
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378 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the |
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379 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, |
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380 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are |
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381 | unrolled. */ |
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382 | |
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383 | int flag_unroll_loops; |
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384 | |
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385 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. |
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386 | This is generally not a win. */ |
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387 | |
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388 | int flag_unroll_all_loops; |
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389 | |
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390 | /* Nonzero for -fwritable-strings: |
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391 | store string constants in data segment and don't uniquize them. */ |
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392 | |
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393 | int flag_writable_strings = 0; |
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394 | |
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395 | /* Nonzero means don't put addresses of constant functions in registers. |
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396 | Used for compiling the Unix kernel, where strange substitutions are |
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397 | done on the assembly output. */ |
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398 | |
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399 | int flag_no_function_cse = 0; |
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400 | |
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401 | /* Nonzero for -fomit-frame-pointer: |
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402 | don't make a frame pointer in simple functions that don't require one. */ |
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403 | |
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404 | int flag_omit_frame_pointer = 0; |
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405 | |
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406 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
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407 | |
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408 | int flag_no_peephole = 0; |
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409 | |
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410 | /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math |
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411 | operations in the interest of optimization. For example it allows |
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412 | GCC to assume arguments to sqrt are nonnegative numbers, allowing |
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413 | faster code for sqrt to be generated. */ |
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414 | |
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415 | int flag_fast_math = 0; |
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416 | |
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417 | /* Nonzero means all references through pointers are volatile. */ |
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418 | |
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419 | int flag_volatile; |
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420 | |
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421 | /* Nonzero means treat all global and extern variables as global. */ |
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422 | |
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423 | int flag_volatile_global; |
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424 | |
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425 | /* Nonzero means just do syntax checking; don't output anything. */ |
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426 | |
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427 | int flag_syntax_only = 0; |
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428 | |
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429 | /* Nonzero means to rerun cse after loop optimization. This increases |
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430 | compilation time about 20% and picks up a few more common expressions. */ |
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431 | |
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432 | static int flag_rerun_cse_after_loop; |
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433 | |
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434 | /* Nonzero for -finline-functions: ok to inline functions that look like |
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435 | good inline candidates. */ |
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436 | |
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437 | int flag_inline_functions; |
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438 | |
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439 | /* Nonzero for -fkeep-inline-functions: even if we make a function |
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440 | go inline everywhere, keep its definition around for debugging |
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441 | purposes. */ |
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442 | |
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443 | int flag_keep_inline_functions; |
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444 | |
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445 | /* Nonzero means that functions will not be inlined. */ |
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446 | |
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447 | int flag_no_inline; |
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448 | |
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449 | /* Nonzero means we should be saving declaration info into a .X file. */ |
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450 | |
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451 | int flag_gen_aux_info = 0; |
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452 | |
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453 | /* Specified name of aux-info file. */ |
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454 | |
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455 | static char *aux_info_file_name; |
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456 | |
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457 | /* Nonzero means make the text shared if supported. */ |
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458 | |
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459 | int flag_shared_data; |
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460 | |
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461 | /* Nonzero means schedule into delayed branch slots if supported. */ |
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462 | |
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463 | int flag_delayed_branch; |
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464 | |
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465 | /* Nonzero means to run cleanups after CALL_EXPRs. */ |
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466 | |
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467 | int flag_short_temps; |
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468 | |
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469 | /* Nonzero if we are compiling pure (sharable) code. |
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470 | Value is 1 if we are doing reasonable (i.e. simple |
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471 | offset into offset table) pic. Value is 2 if we can |
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472 | only perform register offsets. */ |
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473 | |
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474 | int flag_pic; |
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475 | |
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476 | /* Nonzero means place uninitialized global data in the bss section. */ |
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477 | |
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478 | int flag_no_common; |
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479 | |
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480 | /* Nonzero means pretend it is OK to examine bits of target floats, |
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481 | even if that isn't true. The resulting code will have incorrect constants, |
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482 | but the same series of instructions that the native compiler would make. */ |
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483 | |
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484 | int flag_pretend_float; |
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485 | |
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486 | /* Nonzero means change certain warnings into errors. |
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487 | Usually these are warnings about failure to conform to some standard. */ |
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488 | |
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489 | int flag_pedantic_errors = 0; |
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490 | |
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491 | /* flag_schedule_insns means schedule insns within basic blocks (before |
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492 | local_alloc). |
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493 | flag_schedule_insns_after_reload means schedule insns after |
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494 | global_alloc. */ |
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495 | |
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496 | int flag_schedule_insns = 0; |
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497 | int flag_schedule_insns_after_reload = 0; |
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498 | |
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499 | /* -finhibit-size-directive inhibits output of .size for ELF. |
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500 | This is used only for compiling crtstuff.c, |
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501 | and it may be extended to other effects |
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502 | needed for crtstuff.c on other systems. */ |
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503 | int flag_inhibit_size_directive = 0; |
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504 | |
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505 | /* -fverbose-asm causes extra commentary information to be produced in |
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506 | the generated assembly code (to make it more readable). This option |
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507 | is generally only of use to those who actually need to read the |
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508 | generated assembly code (perhaps while debugging the compiler itself). */ |
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509 | |
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510 | int flag_verbose_asm = 0; |
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511 | |
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512 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
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513 | (Or, more generally, a linker that handles initializations.) |
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514 | -fno-gnu-linker says that collect2 will be used. */ |
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515 | #ifdef USE_COLLECT2 |
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516 | int flag_gnu_linker = 0; |
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517 | #else |
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518 | int flag_gnu_linker = 1; |
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519 | #endif |
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520 | |
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521 | /* Tag all structures with __attribute__(packed) */ |
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522 | int flag_pack_struct = 0; |
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523 | |
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524 | /* Table of language-independent -f options. |
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525 | STRING is the option name. VARIABLE is the address of the variable. |
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526 | ON_VALUE is the value to store in VARIABLE |
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527 | if `-fSTRING' is seen as an option. |
---|
528 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ |
---|
529 | |
---|
530 | struct { char *string; int *variable; int on_value;} f_options[] = |
---|
531 | { |
---|
532 | {"float-store", &flag_float_store, 1}, |
---|
533 | {"volatile", &flag_volatile, 1}, |
---|
534 | {"volatile-global", &flag_volatile_global, 1}, |
---|
535 | {"defer-pop", &flag_defer_pop, 1}, |
---|
536 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1}, |
---|
537 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1}, |
---|
538 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1}, |
---|
539 | {"expensive-optimizations", &flag_expensive_optimizations, 1}, |
---|
540 | {"thread-jumps", &flag_thread_jumps, 1}, |
---|
541 | {"strength-reduce", &flag_strength_reduce, 1}, |
---|
542 | {"unroll-loops", &flag_unroll_loops, 1}, |
---|
543 | {"unroll-all-loops", &flag_unroll_all_loops, 1}, |
---|
544 | {"writable-strings", &flag_writable_strings, 1}, |
---|
545 | {"peephole", &flag_no_peephole, 0}, |
---|
546 | {"force-mem", &flag_force_mem, 1}, |
---|
547 | {"force-addr", &flag_force_addr, 1}, |
---|
548 | {"function-cse", &flag_no_function_cse, 0}, |
---|
549 | {"inline-functions", &flag_inline_functions, 1}, |
---|
550 | {"keep-inline-functions", &flag_keep_inline_functions, 1}, |
---|
551 | {"inline", &flag_no_inline, 0}, |
---|
552 | {"syntax-only", &flag_syntax_only, 1}, |
---|
553 | {"shared-data", &flag_shared_data, 1}, |
---|
554 | {"caller-saves", &flag_caller_saves, 1}, |
---|
555 | {"pcc-struct-return", &flag_pcc_struct_return, 1}, |
---|
556 | {"reg-struct-return", &flag_pcc_struct_return, 0}, |
---|
557 | {"delayed-branch", &flag_delayed_branch, 1}, |
---|
558 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1}, |
---|
559 | {"pretend-float", &flag_pretend_float, 1}, |
---|
560 | {"schedule-insns", &flag_schedule_insns, 1}, |
---|
561 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1}, |
---|
562 | {"pic", &flag_pic, 1}, |
---|
563 | {"PIC", &flag_pic, 2}, |
---|
564 | {"fast-math", &flag_fast_math, 1}, |
---|
565 | {"common", &flag_no_common, 0}, |
---|
566 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1}, |
---|
567 | {"verbose-asm", &flag_verbose_asm, 1}, |
---|
568 | {"gnu-linker", &flag_gnu_linker, 1}, |
---|
569 | {"pack-struct", &flag_pack_struct, 1}, |
---|
570 | {"bytecode", &output_bytecode, 1} |
---|
571 | }; |
---|
572 | |
---|
573 | /* Table of language-specific options. */ |
---|
574 | |
---|
575 | char *lang_options[] = |
---|
576 | { |
---|
577 | "-ansi", |
---|
578 | "-fallow-single-precision", |
---|
579 | |
---|
580 | "-fsigned-bitfields", |
---|
581 | "-funsigned-bitfields", |
---|
582 | "-fno-signed-bitfields", |
---|
583 | "-fno-unsigned-bitfields", |
---|
584 | "-fsigned-char", |
---|
585 | "-funsigned-char", |
---|
586 | "-fno-signed-char", |
---|
587 | "-fno-unsigned-char", |
---|
588 | |
---|
589 | "-ftraditional", |
---|
590 | "-traditional", |
---|
591 | "-fnotraditional", |
---|
592 | "-fno-traditional", |
---|
593 | |
---|
594 | "-fasm", |
---|
595 | "-fno-asm", |
---|
596 | "-fbuiltin", |
---|
597 | "-fno-builtin", |
---|
598 | "-fcond-mismatch", |
---|
599 | "-fno-cond-mismatch", |
---|
600 | "-fdollars-in-identifiers", |
---|
601 | "-fno-dollars-in-identifiers", |
---|
602 | "-fident", |
---|
603 | "-fno-ident", |
---|
604 | "-fshort-double", |
---|
605 | "-fno-short-double", |
---|
606 | "-fshort-enums", |
---|
607 | "-fno-short-enums", |
---|
608 | |
---|
609 | "-Wall", |
---|
610 | "-Wbad-function-cast", |
---|
611 | "-Wno-bad-function-cast", |
---|
612 | "-Wcast-qual", |
---|
613 | "-Wno-cast-qual", |
---|
614 | "-Wchar-subscripts", |
---|
615 | "-Wno-char-subscripts", |
---|
616 | "-Wcomment", |
---|
617 | "-Wno-comment", |
---|
618 | "-Wcomments", |
---|
619 | "-Wno-comments", |
---|
620 | "-Wconversion", |
---|
621 | "-Wno-conversion", |
---|
622 | "-Wformat", |
---|
623 | "-Wno-format", |
---|
624 | "-Wimport", |
---|
625 | "-Wno-import", |
---|
626 | "-Wimplicit", |
---|
627 | "-Wno-implicit", |
---|
628 | "-Wmissing-braces", |
---|
629 | "-Wno-missing-braces", |
---|
630 | "-Wmissing-declarations", |
---|
631 | "-Wno-missing-declarations", |
---|
632 | "-Wmissing-prototypes", |
---|
633 | "-Wno-missing-prototypes", |
---|
634 | "-Wnested-externs", |
---|
635 | "-Wno-nested-externs", |
---|
636 | "-Wparentheses", |
---|
637 | "-Wno-parentheses", |
---|
638 | "-Wpointer-arith", |
---|
639 | "-Wno-pointer-arith", |
---|
640 | "-Wredundant-decls", |
---|
641 | "-Wno-redundant-decls", |
---|
642 | "-Wstrict-prototypes", |
---|
643 | "-Wno-strict-prototypes", |
---|
644 | "-Wtraditional", |
---|
645 | "-Wno-traditional", |
---|
646 | "-Wtrigraphs", |
---|
647 | "-Wno-trigraphs", |
---|
648 | "-Wwrite-strings", |
---|
649 | "-Wno-write-strings", |
---|
650 | |
---|
651 | /* these are for obj c */ |
---|
652 | "-lang-objc", |
---|
653 | "-gen-decls", |
---|
654 | "-fgnu-runtime", |
---|
655 | "-fno-gnu-runtime", |
---|
656 | "-fnext-runtime", |
---|
657 | "-fno-next-runtime", |
---|
658 | "-Wselector", |
---|
659 | "-Wno-selector", |
---|
660 | "-Wprotocol", |
---|
661 | "-Wno-protocol", |
---|
662 | |
---|
663 | #include "options.h" |
---|
664 | 0 |
---|
665 | }; |
---|
666 | |
---|
667 | /* Options controlling warnings */ |
---|
668 | |
---|
669 | /* Don't print warning messages. -w. */ |
---|
670 | |
---|
671 | int inhibit_warnings = 0; |
---|
672 | |
---|
673 | /* Print various extra warnings. -W. */ |
---|
674 | |
---|
675 | int extra_warnings = 0; |
---|
676 | |
---|
677 | /* Treat warnings as errors. -Werror. */ |
---|
678 | |
---|
679 | int warnings_are_errors = 0; |
---|
680 | |
---|
681 | /* Nonzero to warn about unused local variables. */ |
---|
682 | |
---|
683 | int warn_unused; |
---|
684 | |
---|
685 | /* Nonzero to warn about variables used before they are initialized. */ |
---|
686 | |
---|
687 | int warn_uninitialized; |
---|
688 | |
---|
689 | /* Nonzero means warn about all declarations which shadow others. */ |
---|
690 | |
---|
691 | int warn_shadow; |
---|
692 | |
---|
693 | /* Warn if a switch on an enum fails to have a case for every enum value. */ |
---|
694 | |
---|
695 | int warn_switch; |
---|
696 | |
---|
697 | /* Nonzero means warn about function definitions that default the return type |
---|
698 | or that use a null return and have a return-type other than void. */ |
---|
699 | |
---|
700 | int warn_return_type; |
---|
701 | |
---|
702 | /* Nonzero means warn about pointer casts that increase the required |
---|
703 | alignment of the target type (and might therefore lead to a crash |
---|
704 | due to a misaligned access). */ |
---|
705 | |
---|
706 | int warn_cast_align; |
---|
707 | |
---|
708 | /* Nonzero means warn about any identifiers that match in the first N |
---|
709 | characters. The value N is in `id_clash_len'. */ |
---|
710 | |
---|
711 | int warn_id_clash; |
---|
712 | unsigned id_clash_len; |
---|
713 | |
---|
714 | /* Nonzero means warn about any objects definitions whose size is larger |
---|
715 | than N bytes. Also want about function definitions whose returned |
---|
716 | values are larger than N bytes. The value N is in `larger_than_size'. */ |
---|
717 | |
---|
718 | int warn_larger_than; |
---|
719 | unsigned larger_than_size; |
---|
720 | |
---|
721 | /* Nonzero means warn if inline function is too large. */ |
---|
722 | |
---|
723 | int warn_inline; |
---|
724 | |
---|
725 | /* Warn if a function returns an aggregate, |
---|
726 | since there are often incompatible calling conventions for doing this. */ |
---|
727 | |
---|
728 | int warn_aggregate_return; |
---|
729 | |
---|
730 | /* Likewise for -W. */ |
---|
731 | |
---|
732 | struct { char *string; int *variable; int on_value;} W_options[] = |
---|
733 | { |
---|
734 | {"unused", &warn_unused, 1}, |
---|
735 | {"error", &warnings_are_errors, 1}, |
---|
736 | {"shadow", &warn_shadow, 1}, |
---|
737 | {"switch", &warn_switch, 1}, |
---|
738 | {"aggregate-return", &warn_aggregate_return, 1}, |
---|
739 | {"cast-align", &warn_cast_align, 1}, |
---|
740 | {"uninitialized", &warn_uninitialized, 1}, |
---|
741 | {"inline", &warn_inline, 1} |
---|
742 | }; |
---|
743 | |
---|
744 | /* Output files for assembler code (real compiler output) |
---|
745 | and debugging dumps. */ |
---|
746 | |
---|
747 | FILE *asm_out_file; |
---|
748 | FILE *aux_info_file; |
---|
749 | FILE *rtl_dump_file; |
---|
750 | FILE *jump_opt_dump_file; |
---|
751 | FILE *cse_dump_file; |
---|
752 | FILE *loop_dump_file; |
---|
753 | FILE *cse2_dump_file; |
---|
754 | FILE *flow_dump_file; |
---|
755 | FILE *combine_dump_file; |
---|
756 | FILE *sched_dump_file; |
---|
757 | FILE *local_reg_dump_file; |
---|
758 | FILE *global_reg_dump_file; |
---|
759 | FILE *sched2_dump_file; |
---|
760 | FILE *jump2_opt_dump_file; |
---|
761 | FILE *dbr_sched_dump_file; |
---|
762 | FILE *stack_reg_dump_file; |
---|
763 | |
---|
764 | /* Time accumulators, to count the total time spent in various passes. */ |
---|
765 | |
---|
766 | int parse_time; |
---|
767 | int varconst_time; |
---|
768 | int integration_time; |
---|
769 | int jump_time; |
---|
770 | int cse_time; |
---|
771 | int loop_time; |
---|
772 | int cse2_time; |
---|
773 | int flow_time; |
---|
774 | int combine_time; |
---|
775 | int sched_time; |
---|
776 | int local_alloc_time; |
---|
777 | int global_alloc_time; |
---|
778 | int sched2_time; |
---|
779 | int dbr_sched_time; |
---|
780 | int shorten_branch_time; |
---|
781 | int stack_reg_time; |
---|
782 | int final_time; |
---|
783 | int symout_time; |
---|
784 | int dump_time; |
---|
785 | |
---|
786 | /* Return time used so far, in microseconds. */ |
---|
787 | |
---|
788 | int |
---|
789 | get_run_time () |
---|
790 | { |
---|
791 | #ifndef _WIN32 |
---|
792 | #ifdef USG |
---|
793 | struct tms tms; |
---|
794 | #else |
---|
795 | #ifndef VMS |
---|
796 | struct rusage rusage; |
---|
797 | #else |
---|
798 | struct |
---|
799 | { |
---|
800 | int proc_user_time; |
---|
801 | int proc_system_time; |
---|
802 | int child_user_time; |
---|
803 | int child_system_time; |
---|
804 | } vms_times; |
---|
805 | #endif |
---|
806 | #endif |
---|
807 | #endif |
---|
808 | |
---|
809 | if (quiet_flag) |
---|
810 | return 0; |
---|
811 | #ifdef _WIN32 |
---|
812 | if (clock() < 0) |
---|
813 | return 0; |
---|
814 | else |
---|
815 | return (clock() * 1000); |
---|
816 | #else /* not _WIN32 */ |
---|
817 | #ifdef USG |
---|
818 | times (&tms); |
---|
819 | return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ); |
---|
820 | #else |
---|
821 | #ifndef VMS |
---|
822 | getrusage (0, &rusage); |
---|
823 | return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec |
---|
824 | + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec); |
---|
825 | #else /* VMS */ |
---|
826 | times (&vms_times); |
---|
827 | return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000; |
---|
828 | #endif |
---|
829 | #endif |
---|
830 | #endif |
---|
831 | } |
---|
832 | |
---|
833 | #define TIMEVAR(VAR, BODY) \ |
---|
834 | do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0) |
---|
835 | |
---|
836 | void |
---|
837 | print_time (str, total) |
---|
838 | char *str; |
---|
839 | int total; |
---|
840 | { |
---|
841 | fprintf (stderr, |
---|
842 | "time in %s: %d.%06d\n", |
---|
843 | str, total / 1000000, total % 1000000); |
---|
844 | } |
---|
845 | |
---|
846 | /* Count an error or warning. Return 1 if the message should be printed. */ |
---|
847 | |
---|
848 | int |
---|
849 | count_error (warningp) |
---|
850 | int warningp; |
---|
851 | { |
---|
852 | if (warningp && inhibit_warnings) |
---|
853 | return 0; |
---|
854 | |
---|
855 | if (warningp && !warnings_are_errors) |
---|
856 | warningcount++; |
---|
857 | else |
---|
858 | { |
---|
859 | static int warning_message = 0; |
---|
860 | |
---|
861 | if (warningp && !warning_message) |
---|
862 | { |
---|
863 | fprintf (stderr, "%s: warnings being treated as errors\n", progname); |
---|
864 | warning_message = 1; |
---|
865 | } |
---|
866 | errorcount++; |
---|
867 | } |
---|
868 | |
---|
869 | return 1; |
---|
870 | } |
---|
871 | |
---|
872 | /* Print a fatal error message. NAME is the text. |
---|
873 | Also include a system error message based on `errno'. */ |
---|
874 | |
---|
875 | void |
---|
876 | pfatal_with_name (name) |
---|
877 | char *name; |
---|
878 | { |
---|
879 | fprintf (stderr, "%s: ", progname); |
---|
880 | perror (name); |
---|
881 | exit (FATAL_EXIT_CODE); |
---|
882 | } |
---|
883 | |
---|
884 | void |
---|
885 | fatal_io_error (name) |
---|
886 | char *name; |
---|
887 | { |
---|
888 | fprintf (stderr, "%s: %s: I/O error\n", progname, name); |
---|
889 | exit (FATAL_EXIT_CODE); |
---|
890 | } |
---|
891 | |
---|
892 | /* Called to give a better error message for a bad insn rather than |
---|
893 | just calling abort(). */ |
---|
894 | |
---|
895 | void |
---|
896 | fatal_insn (message, insn) |
---|
897 | char *message; |
---|
898 | rtx insn; |
---|
899 | { |
---|
900 | if (!output_bytecode) |
---|
901 | { |
---|
902 | error (message); |
---|
903 | debug_rtx (insn); |
---|
904 | } |
---|
905 | if (asm_out_file) |
---|
906 | fflush (asm_out_file); |
---|
907 | if (aux_info_file) |
---|
908 | fflush (aux_info_file); |
---|
909 | if (rtl_dump_file) |
---|
910 | fflush (rtl_dump_file); |
---|
911 | if (jump_opt_dump_file) |
---|
912 | fflush (jump_opt_dump_file); |
---|
913 | if (cse_dump_file) |
---|
914 | fflush (cse_dump_file); |
---|
915 | if (loop_dump_file) |
---|
916 | fflush (loop_dump_file); |
---|
917 | if (cse2_dump_file) |
---|
918 | fflush (cse2_dump_file); |
---|
919 | if (flow_dump_file) |
---|
920 | fflush (flow_dump_file); |
---|
921 | if (combine_dump_file) |
---|
922 | fflush (combine_dump_file); |
---|
923 | if (sched_dump_file) |
---|
924 | fflush (sched_dump_file); |
---|
925 | if (local_reg_dump_file) |
---|
926 | fflush (local_reg_dump_file); |
---|
927 | if (global_reg_dump_file) |
---|
928 | fflush (global_reg_dump_file); |
---|
929 | if (sched2_dump_file) |
---|
930 | fflush (sched2_dump_file); |
---|
931 | if (jump2_opt_dump_file) |
---|
932 | fflush (jump2_opt_dump_file); |
---|
933 | if (dbr_sched_dump_file) |
---|
934 | fflush (dbr_sched_dump_file); |
---|
935 | if (stack_reg_dump_file) |
---|
936 | fflush (stack_reg_dump_file); |
---|
937 | abort (); |
---|
938 | } |
---|
939 | |
---|
940 | /* Called to give a better error message when we don't have an insn to match |
---|
941 | what we are looking for or if the insn's constraints aren't satisfied, |
---|
942 | rather than just calling abort(). */ |
---|
943 | |
---|
944 | void |
---|
945 | fatal_insn_not_found (insn) |
---|
946 | rtx insn; |
---|
947 | { |
---|
948 | if (INSN_CODE (insn) < 0) |
---|
949 | fatal_insn ("internal error--unrecognizable insn:", insn); |
---|
950 | else |
---|
951 | fatal_insn ("internal error--insn does not satisfy its constraints:", insn); |
---|
952 | } |
---|
953 | |
---|
954 | /* This is the default decl_printable_name function. */ |
---|
955 | |
---|
956 | static char * |
---|
957 | decl_name (decl, kind) |
---|
958 | tree decl; |
---|
959 | char **kind; |
---|
960 | { |
---|
961 | return IDENTIFIER_POINTER (DECL_NAME (decl)); |
---|
962 | } |
---|
963 | |
---|
964 | /* This is the default interim_eh_hook function. */ |
---|
965 | |
---|
966 | void |
---|
967 | interim_eh (finalization) |
---|
968 | tree finalization; |
---|
969 | { |
---|
970 | /* Don't do anything by default. */ |
---|
971 | } |
---|
972 | |
---|
973 | static int need_error_newline; |
---|
974 | |
---|
975 | /* Function of last error message; |
---|
976 | more generally, function such that if next error message is in it |
---|
977 | then we don't have to mention the function name. */ |
---|
978 | static tree last_error_function = NULL; |
---|
979 | |
---|
980 | /* Used to detect when input_file_stack has changed since last described. */ |
---|
981 | static int last_error_tick; |
---|
982 | |
---|
983 | /* Called when the start of a function definition is parsed, |
---|
984 | this function prints on stderr the name of the function. */ |
---|
985 | |
---|
986 | void |
---|
987 | announce_function (decl) |
---|
988 | tree decl; |
---|
989 | { |
---|
990 | if (! quiet_flag) |
---|
991 | { |
---|
992 | char *junk; |
---|
993 | if (rtl_dump_and_exit) |
---|
994 | fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
995 | else |
---|
996 | fprintf (stderr, " %s", (*decl_printable_name) (decl, &junk)); |
---|
997 | fflush (stderr); |
---|
998 | need_error_newline = 1; |
---|
999 | last_error_function = current_function_decl; |
---|
1000 | } |
---|
1001 | } |
---|
1002 | |
---|
1003 | /* The default function to print out name of current function that caused |
---|
1004 | an error. */ |
---|
1005 | |
---|
1006 | void |
---|
1007 | default_print_error_function (file) |
---|
1008 | char *file; |
---|
1009 | { |
---|
1010 | if (last_error_function != current_function_decl) |
---|
1011 | { |
---|
1012 | char *kind = "function"; |
---|
1013 | if (current_function_decl != 0 |
---|
1014 | && TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE) |
---|
1015 | kind = "method"; |
---|
1016 | |
---|
1017 | if (file) |
---|
1018 | fprintf (stderr, "%s: ", file); |
---|
1019 | |
---|
1020 | if (current_function_decl == NULL) |
---|
1021 | fprintf (stderr, "At top level:\n"); |
---|
1022 | else |
---|
1023 | { |
---|
1024 | char *name = (*decl_printable_name) (current_function_decl, &kind); |
---|
1025 | fprintf (stderr, "In %s `%s':\n", kind, name); |
---|
1026 | } |
---|
1027 | |
---|
1028 | last_error_function = current_function_decl; |
---|
1029 | } |
---|
1030 | } |
---|
1031 | |
---|
1032 | /* Called by report_error_function to print out function name. |
---|
1033 | * Default may be overridden by language front-ends. */ |
---|
1034 | |
---|
1035 | void (*print_error_function) PROTO((char*)) = default_print_error_function; |
---|
1036 | |
---|
1037 | /* Prints out, if necessary, the name of the current function |
---|
1038 | that caused an error. Called from all error and warning functions. */ |
---|
1039 | |
---|
1040 | void |
---|
1041 | report_error_function (file) |
---|
1042 | char *file; |
---|
1043 | { |
---|
1044 | struct file_stack *p; |
---|
1045 | |
---|
1046 | if (need_error_newline) |
---|
1047 | { |
---|
1048 | fprintf (stderr, "\n"); |
---|
1049 | need_error_newline = 0; |
---|
1050 | } |
---|
1051 | |
---|
1052 | (*print_error_function) (file); |
---|
1053 | |
---|
1054 | if (input_file_stack && input_file_stack->next != 0 |
---|
1055 | && input_file_stack_tick != last_error_tick |
---|
1056 | && file == input_filename) |
---|
1057 | { |
---|
1058 | fprintf (stderr, "In file included"); |
---|
1059 | for (p = input_file_stack->next; p; p = p->next) |
---|
1060 | { |
---|
1061 | fprintf (stderr, " from %s:%d", p->name, p->line); |
---|
1062 | if (p->next) |
---|
1063 | fprintf (stderr, ",\n "); |
---|
1064 | } |
---|
1065 | fprintf (stderr, ":\n"); |
---|
1066 | last_error_tick = input_file_stack_tick; |
---|
1067 | } |
---|
1068 | } |
---|
1069 | |
---|
1070 | /* Print a message. */ |
---|
1071 | |
---|
1072 | static void |
---|
1073 | vmessage (prefix, s, ap) |
---|
1074 | char *prefix; |
---|
1075 | char *s; |
---|
1076 | va_list ap; |
---|
1077 | { |
---|
1078 | if (prefix) |
---|
1079 | fprintf (stderr, "%s: ", prefix); |
---|
1080 | |
---|
1081 | #ifdef HAVE_VPRINTF |
---|
1082 | vfprintf (stderr, s, ap); |
---|
1083 | #else |
---|
1084 | { |
---|
1085 | HOST_WIDE_INT v1 = va_arg(ap, HOST_WIDE_INT); |
---|
1086 | HOST_WIDE_INT v2 = va_arg(ap, HOST_WIDE_INT); |
---|
1087 | HOST_WIDE_INT v3 = va_arg(ap, HOST_WIDE_INT); |
---|
1088 | HOST_WIDE_INT v4 = va_arg(ap, HOST_WIDE_INT); |
---|
1089 | fprintf (stderr, s, v1, v2, v3, v4); |
---|
1090 | } |
---|
1091 | #endif |
---|
1092 | } |
---|
1093 | |
---|
1094 | /* Print a message relevant to line LINE of file FILE. */ |
---|
1095 | |
---|
1096 | static void |
---|
1097 | v_message_with_file_and_line (file, line, prefix, s, ap) |
---|
1098 | char *file; |
---|
1099 | int line; |
---|
1100 | char *prefix; |
---|
1101 | char *s; |
---|
1102 | va_list ap; |
---|
1103 | { |
---|
1104 | if (file) |
---|
1105 | fprintf (stderr, "%s:%d: ", file, line); |
---|
1106 | else |
---|
1107 | fprintf (stderr, "%s: ", progname); |
---|
1108 | |
---|
1109 | vmessage (prefix, s, ap); |
---|
1110 | fputc ('\n', stderr); |
---|
1111 | } |
---|
1112 | |
---|
1113 | /* Print a message relevant to the given DECL. */ |
---|
1114 | |
---|
1115 | static void |
---|
1116 | v_message_with_decl (decl, prefix, s, ap) |
---|
1117 | tree decl; |
---|
1118 | char *prefix; |
---|
1119 | char *s; |
---|
1120 | va_list ap; |
---|
1121 | { |
---|
1122 | char *n, *p, *junk; |
---|
1123 | |
---|
1124 | fprintf (stderr, "%s:%d: ", |
---|
1125 | DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); |
---|
1126 | |
---|
1127 | if (prefix) |
---|
1128 | fprintf (stderr, "%s: ", prefix); |
---|
1129 | |
---|
1130 | /* Do magic to get around lack of varargs support for insertion |
---|
1131 | of arguments into existing list. We know that the decl is first; |
---|
1132 | we ass_u_me that it will be printed with "%s". */ |
---|
1133 | |
---|
1134 | for (p = s; *p; ++p) |
---|
1135 | { |
---|
1136 | if (*p == '%') |
---|
1137 | { |
---|
1138 | if (*(p + 1) == '%') |
---|
1139 | ++p; |
---|
1140 | else |
---|
1141 | break; |
---|
1142 | } |
---|
1143 | } |
---|
1144 | |
---|
1145 | if (p > s) /* Print the left-hand substring. */ |
---|
1146 | { |
---|
1147 | char fmt[sizeof "%.255s"]; |
---|
1148 | long width = p - s; |
---|
1149 | |
---|
1150 | if (width > 255L) width = 255L; /* arbitrary */ |
---|
1151 | sprintf (fmt, "%%.%lds", width); |
---|
1152 | fprintf (stderr, fmt, s); |
---|
1153 | } |
---|
1154 | |
---|
1155 | if (*p == '%') /* Print the name. */ |
---|
1156 | { |
---|
1157 | char *n = (DECL_NAME (decl) |
---|
1158 | ? (*decl_printable_name) (decl, &junk) |
---|
1159 | : "((anonymous))"); |
---|
1160 | fputs (n, stderr); |
---|
1161 | while (*p) |
---|
1162 | { |
---|
1163 | ++p; |
---|
1164 | if (isalpha (*(p - 1) & 0xFF)) |
---|
1165 | break; |
---|
1166 | } |
---|
1167 | } |
---|
1168 | |
---|
1169 | if (*p) /* Print the rest of the message. */ |
---|
1170 | vmessage ((char *)NULL, p, ap); |
---|
1171 | |
---|
1172 | fputc ('\n', stderr); |
---|
1173 | } |
---|
1174 | |
---|
1175 | /* Figure file and line of the given INSN. */ |
---|
1176 | |
---|
1177 | static void |
---|
1178 | file_and_line_for_asm (insn, pfile, pline) |
---|
1179 | rtx insn; |
---|
1180 | char **pfile; |
---|
1181 | int *pline; |
---|
1182 | { |
---|
1183 | rtx body = PATTERN (insn); |
---|
1184 | rtx asmop; |
---|
1185 | |
---|
1186 | /* Find the (or one of the) ASM_OPERANDS in the insn. */ |
---|
1187 | if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS) |
---|
1188 | asmop = SET_SRC (body); |
---|
1189 | else if (GET_CODE (body) == ASM_OPERANDS) |
---|
1190 | asmop = body; |
---|
1191 | else if (GET_CODE (body) == PARALLEL |
---|
1192 | && GET_CODE (XVECEXP (body, 0, 0)) == SET) |
---|
1193 | asmop = SET_SRC (XVECEXP (body, 0, 0)); |
---|
1194 | else if (GET_CODE (body) == PARALLEL |
---|
1195 | && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS) |
---|
1196 | asmop = XVECEXP (body, 0, 0); |
---|
1197 | else |
---|
1198 | asmop = NULL; |
---|
1199 | |
---|
1200 | if (asmop) |
---|
1201 | { |
---|
1202 | *pfile = ASM_OPERANDS_SOURCE_FILE (asmop); |
---|
1203 | *pline = ASM_OPERANDS_SOURCE_LINE (asmop); |
---|
1204 | } |
---|
1205 | else |
---|
1206 | { |
---|
1207 | *pfile = input_filename; |
---|
1208 | *pline = lineno; |
---|
1209 | } |
---|
1210 | } |
---|
1211 | |
---|
1212 | /* Report an error at line LINE of file FILE. */ |
---|
1213 | |
---|
1214 | static void |
---|
1215 | v_error_with_file_and_line (file, line, s, ap) |
---|
1216 | char *file; |
---|
1217 | int line; |
---|
1218 | char *s; |
---|
1219 | va_list ap; |
---|
1220 | { |
---|
1221 | count_error (0); |
---|
1222 | report_error_function (file); |
---|
1223 | v_message_with_file_and_line (file, line, (char *)NULL, s, ap); |
---|
1224 | } |
---|
1225 | |
---|
1226 | void |
---|
1227 | error_with_file_and_line VPROTO((char *file, int line, char *s, ...)) |
---|
1228 | { |
---|
1229 | #ifndef __STDC__ |
---|
1230 | char *file; |
---|
1231 | int line; |
---|
1232 | char *s; |
---|
1233 | #endif |
---|
1234 | va_list ap; |
---|
1235 | |
---|
1236 | VA_START (ap, s); |
---|
1237 | |
---|
1238 | #ifndef __STDC__ |
---|
1239 | file = va_arg (ap, char *); |
---|
1240 | line = va_arg (ap, int); |
---|
1241 | s = va_arg (ap, char *); |
---|
1242 | #endif |
---|
1243 | |
---|
1244 | v_error_with_file_and_line (file, line, s, ap); |
---|
1245 | va_end (ap); |
---|
1246 | } |
---|
1247 | |
---|
1248 | /* Report an error at the declaration DECL. |
---|
1249 | S is a format string which uses %s to substitute the declaration |
---|
1250 | name; subsequent substitutions are a la printf. */ |
---|
1251 | |
---|
1252 | static void |
---|
1253 | v_error_with_decl (decl, s, ap) |
---|
1254 | tree decl; |
---|
1255 | char *s; |
---|
1256 | va_list ap; |
---|
1257 | { |
---|
1258 | count_error (0); |
---|
1259 | report_error_function (DECL_SOURCE_FILE (decl)); |
---|
1260 | v_message_with_decl (decl, (char *)NULL, s, ap); |
---|
1261 | } |
---|
1262 | |
---|
1263 | void |
---|
1264 | error_with_decl VPROTO((tree decl, char *s, ...)) |
---|
1265 | { |
---|
1266 | #ifndef __STDC__ |
---|
1267 | tree decl; |
---|
1268 | char *s; |
---|
1269 | #endif |
---|
1270 | va_list ap; |
---|
1271 | |
---|
1272 | VA_START (ap, s); |
---|
1273 | |
---|
1274 | #ifndef __STDC__ |
---|
1275 | decl = va_arg (ap, tree); |
---|
1276 | s = va_arg (ap, char *); |
---|
1277 | #endif |
---|
1278 | |
---|
1279 | v_error_with_decl (decl, s, ap); |
---|
1280 | va_end (ap); |
---|
1281 | } |
---|
1282 | |
---|
1283 | /* Report an error at the line number of the insn INSN. |
---|
1284 | This is used only when INSN is an `asm' with operands, |
---|
1285 | and each ASM_OPERANDS records its own source file and line. */ |
---|
1286 | |
---|
1287 | static void |
---|
1288 | v_error_for_asm (insn, s, ap) |
---|
1289 | rtx insn; |
---|
1290 | char *s; |
---|
1291 | va_list ap; |
---|
1292 | { |
---|
1293 | char *file; |
---|
1294 | int line; |
---|
1295 | |
---|
1296 | count_error (0); |
---|
1297 | file_and_line_for_asm (insn, &file, &line); |
---|
1298 | report_error_function (file); |
---|
1299 | v_message_with_file_and_line (file, line, (char *)NULL, s, ap); |
---|
1300 | } |
---|
1301 | |
---|
1302 | void |
---|
1303 | error_for_asm VPROTO((rtx insn, char *s, ...)) |
---|
1304 | { |
---|
1305 | #ifndef __STDC__ |
---|
1306 | rtx insn; |
---|
1307 | char *s; |
---|
1308 | #endif |
---|
1309 | va_list ap; |
---|
1310 | |
---|
1311 | VA_START (ap, s); |
---|
1312 | |
---|
1313 | #ifndef __STDC__ |
---|
1314 | insn = va_arg (ap, rtx); |
---|
1315 | s = va_arg (ap, char *); |
---|
1316 | #endif |
---|
1317 | |
---|
1318 | v_error_for_asm (insn, s, ap); |
---|
1319 | va_end (ap); |
---|
1320 | } |
---|
1321 | |
---|
1322 | /* Report an error at the current line number. */ |
---|
1323 | |
---|
1324 | static void |
---|
1325 | verror (s, ap) |
---|
1326 | char *s; |
---|
1327 | va_list ap; |
---|
1328 | { |
---|
1329 | v_error_with_file_and_line (input_filename, lineno, s, ap); |
---|
1330 | } |
---|
1331 | |
---|
1332 | void |
---|
1333 | error VPROTO((char *s, ...)) |
---|
1334 | { |
---|
1335 | #ifndef __STDC__ |
---|
1336 | char *s; |
---|
1337 | #endif |
---|
1338 | va_list ap; |
---|
1339 | |
---|
1340 | VA_START (ap, s); |
---|
1341 | |
---|
1342 | #ifndef __STDC__ |
---|
1343 | s = va_arg (ap, char *); |
---|
1344 | #endif |
---|
1345 | |
---|
1346 | verror (s, ap); |
---|
1347 | va_end (ap); |
---|
1348 | } |
---|
1349 | |
---|
1350 | /* Report a fatal error at the current line number. */ |
---|
1351 | |
---|
1352 | static void |
---|
1353 | vfatal (s, ap) |
---|
1354 | char *s; |
---|
1355 | va_list ap; |
---|
1356 | { |
---|
1357 | verror (s, ap); |
---|
1358 | exit (FATAL_EXIT_CODE); |
---|
1359 | } |
---|
1360 | |
---|
1361 | void |
---|
1362 | fatal VPROTO((char *s, ...)) |
---|
1363 | { |
---|
1364 | #ifndef __STDC__ |
---|
1365 | char *s; |
---|
1366 | #endif |
---|
1367 | va_list ap; |
---|
1368 | |
---|
1369 | VA_START (ap, s); |
---|
1370 | |
---|
1371 | #ifndef __STDC__ |
---|
1372 | s = va_arg (ap, char *); |
---|
1373 | #endif |
---|
1374 | |
---|
1375 | vfatal (s, ap); |
---|
1376 | va_end (ap); |
---|
1377 | } |
---|
1378 | |
---|
1379 | /* Report a warning at line LINE of file FILE. */ |
---|
1380 | |
---|
1381 | static void |
---|
1382 | v_warning_with_file_and_line (file, line, s, ap) |
---|
1383 | char *file; |
---|
1384 | int line; |
---|
1385 | char *s; |
---|
1386 | va_list ap; |
---|
1387 | { |
---|
1388 | if (count_error (1)) |
---|
1389 | { |
---|
1390 | report_error_function (file); |
---|
1391 | v_message_with_file_and_line (file, line, "warning", s, ap); |
---|
1392 | } |
---|
1393 | } |
---|
1394 | |
---|
1395 | void |
---|
1396 | warning_with_file_and_line VPROTO((char *file, int line, char *s, ...)) |
---|
1397 | { |
---|
1398 | #ifndef __STDC__ |
---|
1399 | char *file; |
---|
1400 | int line; |
---|
1401 | char *s; |
---|
1402 | #endif |
---|
1403 | va_list ap; |
---|
1404 | |
---|
1405 | VA_START (ap, s); |
---|
1406 | |
---|
1407 | #ifndef __STDC__ |
---|
1408 | file = va_arg (ap, char *); |
---|
1409 | line = va_arg (ap, int); |
---|
1410 | s = va_arg (ap, char *); |
---|
1411 | #endif |
---|
1412 | |
---|
1413 | v_warning_with_file_and_line (file, line, s, ap); |
---|
1414 | va_end (ap); |
---|
1415 | } |
---|
1416 | |
---|
1417 | /* Report a warning at the declaration DECL. |
---|
1418 | S is a format string which uses %s to substitute the declaration |
---|
1419 | name; subsequent substitutions are a la printf. */ |
---|
1420 | |
---|
1421 | static void |
---|
1422 | v_warning_with_decl (decl, s, ap) |
---|
1423 | tree decl; |
---|
1424 | char *s; |
---|
1425 | va_list ap; |
---|
1426 | { |
---|
1427 | if (count_error (1)) |
---|
1428 | { |
---|
1429 | report_error_function (DECL_SOURCE_FILE (decl)); |
---|
1430 | v_message_with_decl (decl, "warning", s, ap); |
---|
1431 | } |
---|
1432 | } |
---|
1433 | |
---|
1434 | void |
---|
1435 | warning_with_decl VPROTO((tree decl, char *s, ...)) |
---|
1436 | { |
---|
1437 | #ifndef __STDC__ |
---|
1438 | tree decl; |
---|
1439 | char *s; |
---|
1440 | #endif |
---|
1441 | va_list ap; |
---|
1442 | |
---|
1443 | VA_START (ap, s); |
---|
1444 | |
---|
1445 | #ifndef __STDC__ |
---|
1446 | decl = va_arg (ap, tree); |
---|
1447 | s = va_arg (ap, char *); |
---|
1448 | #endif |
---|
1449 | |
---|
1450 | v_warning_with_decl (decl, s, ap); |
---|
1451 | va_end (ap); |
---|
1452 | } |
---|
1453 | |
---|
1454 | /* Report a warning at the line number of the insn INSN. |
---|
1455 | This is used only when INSN is an `asm' with operands, |
---|
1456 | and each ASM_OPERANDS records its own source file and line. */ |
---|
1457 | |
---|
1458 | static void |
---|
1459 | v_warning_for_asm (insn, s, ap) |
---|
1460 | rtx insn; |
---|
1461 | char *s; |
---|
1462 | va_list ap; |
---|
1463 | { |
---|
1464 | if (count_error (1)) |
---|
1465 | { |
---|
1466 | char *file; |
---|
1467 | int line; |
---|
1468 | |
---|
1469 | file_and_line_for_asm (insn, &file, &line); |
---|
1470 | report_error_function (file); |
---|
1471 | v_message_with_file_and_line (file, line, "warning", s, ap); |
---|
1472 | } |
---|
1473 | } |
---|
1474 | |
---|
1475 | void |
---|
1476 | warning_for_asm VPROTO((rtx insn, char *s, ...)) |
---|
1477 | { |
---|
1478 | #ifndef __STDC__ |
---|
1479 | rtx insn; |
---|
1480 | char *s; |
---|
1481 | #endif |
---|
1482 | va_list ap; |
---|
1483 | |
---|
1484 | VA_START (ap, s); |
---|
1485 | |
---|
1486 | #ifndef __STDC__ |
---|
1487 | insn = va_arg (ap, rtx); |
---|
1488 | s = va_arg (ap, char *); |
---|
1489 | #endif |
---|
1490 | |
---|
1491 | v_warning_for_asm (insn, s, ap); |
---|
1492 | va_end (ap); |
---|
1493 | } |
---|
1494 | |
---|
1495 | /* Report a warning at the current line number. */ |
---|
1496 | |
---|
1497 | static void |
---|
1498 | vwarning (s, ap) |
---|
1499 | char *s; |
---|
1500 | va_list ap; |
---|
1501 | { |
---|
1502 | v_warning_with_file_and_line (input_filename, lineno, s, ap); |
---|
1503 | } |
---|
1504 | |
---|
1505 | void |
---|
1506 | warning VPROTO((char *s, ...)) |
---|
1507 | { |
---|
1508 | #ifndef __STDC__ |
---|
1509 | char *s; |
---|
1510 | #endif |
---|
1511 | va_list ap; |
---|
1512 | |
---|
1513 | VA_START (ap, s); |
---|
1514 | |
---|
1515 | #ifndef __STDC__ |
---|
1516 | s = va_arg (ap, char *); |
---|
1517 | #endif |
---|
1518 | |
---|
1519 | vwarning (s, ap); |
---|
1520 | va_end (ap); |
---|
1521 | } |
---|
1522 | |
---|
1523 | /* These functions issue either warnings or errors depending on |
---|
1524 | -pedantic-errors. */ |
---|
1525 | |
---|
1526 | static void |
---|
1527 | vpedwarn (s, ap) |
---|
1528 | char *s; |
---|
1529 | va_list ap; |
---|
1530 | { |
---|
1531 | if (flag_pedantic_errors) |
---|
1532 | verror (s, ap); |
---|
1533 | else |
---|
1534 | vwarning (s, ap); |
---|
1535 | } |
---|
1536 | |
---|
1537 | void |
---|
1538 | pedwarn VPROTO((char *s, ...)) |
---|
1539 | { |
---|
1540 | #ifndef __STDC__ |
---|
1541 | char *s; |
---|
1542 | #endif |
---|
1543 | va_list ap; |
---|
1544 | |
---|
1545 | VA_START (ap, s); |
---|
1546 | |
---|
1547 | #ifndef __STDC__ |
---|
1548 | s = va_arg (ap, char *); |
---|
1549 | #endif |
---|
1550 | |
---|
1551 | vpedwarn (s, ap); |
---|
1552 | va_end (ap); |
---|
1553 | } |
---|
1554 | |
---|
1555 | static void |
---|
1556 | v_pedwarn_with_decl (decl, s, ap) |
---|
1557 | tree decl; |
---|
1558 | char *s; |
---|
1559 | va_list ap; |
---|
1560 | { |
---|
1561 | /* We don't want -pedantic-errors to cause the compilation to fail from |
---|
1562 | "errors" in system header files. Sometimes fixincludes can't fix what's |
---|
1563 | broken (eg: unsigned char bitfields - fixing it may change the alignment |
---|
1564 | which will cause programs to mysteriously fail because the C library |
---|
1565 | or kernel uses the original layout). There's no point in issuing a |
---|
1566 | warning either, it's just unnecessary noise. */ |
---|
1567 | |
---|
1568 | if (! DECL_IN_SYSTEM_HEADER (decl)) |
---|
1569 | { |
---|
1570 | if (flag_pedantic_errors) |
---|
1571 | v_error_with_decl (decl, s, ap); |
---|
1572 | else |
---|
1573 | v_warning_with_decl (decl, s, ap); |
---|
1574 | } |
---|
1575 | } |
---|
1576 | |
---|
1577 | void |
---|
1578 | pedwarn_with_decl VPROTO((tree decl, char *s, ...)) |
---|
1579 | { |
---|
1580 | #ifndef __STDC__ |
---|
1581 | tree decl; |
---|
1582 | char *s; |
---|
1583 | #endif |
---|
1584 | va_list ap; |
---|
1585 | |
---|
1586 | VA_START (ap, s); |
---|
1587 | |
---|
1588 | #ifndef __STDC__ |
---|
1589 | decl = va_arg (ap, tree); |
---|
1590 | s = va_arg (ap, char *); |
---|
1591 | #endif |
---|
1592 | |
---|
1593 | v_pedwarn_with_decl (decl, s, ap); |
---|
1594 | va_end (ap); |
---|
1595 | } |
---|
1596 | |
---|
1597 | static void |
---|
1598 | v_pedwarn_with_file_and_line (file, line, s, ap) |
---|
1599 | char *file; |
---|
1600 | int line; |
---|
1601 | char *s; |
---|
1602 | va_list ap; |
---|
1603 | { |
---|
1604 | if (flag_pedantic_errors) |
---|
1605 | v_error_with_file_and_line (file, line, s, ap); |
---|
1606 | else |
---|
1607 | v_warning_with_file_and_line (file, line, s, ap); |
---|
1608 | } |
---|
1609 | |
---|
1610 | void |
---|
1611 | pedwarn_with_file_and_line VPROTO((char *file, int line, char *s, ...)) |
---|
1612 | { |
---|
1613 | #ifndef __STDC__ |
---|
1614 | char *file; |
---|
1615 | int line; |
---|
1616 | char *s; |
---|
1617 | #endif |
---|
1618 | va_list ap; |
---|
1619 | |
---|
1620 | VA_START (ap, s); |
---|
1621 | |
---|
1622 | #ifndef __STDC__ |
---|
1623 | file = va_arg (ap, char *); |
---|
1624 | line = va_arg (ap, int); |
---|
1625 | s = va_arg (ap, char *); |
---|
1626 | #endif |
---|
1627 | |
---|
1628 | v_pedwarn_with_file_and_line (file, line, s, ap); |
---|
1629 | va_end (ap); |
---|
1630 | } |
---|
1631 | |
---|
1632 | /* Apologize for not implementing some feature. */ |
---|
1633 | |
---|
1634 | static void |
---|
1635 | vsorry (s, ap) |
---|
1636 | char *s; |
---|
1637 | va_list ap; |
---|
1638 | { |
---|
1639 | sorrycount++; |
---|
1640 | if (input_filename) |
---|
1641 | fprintf (stderr, "%s:%d: ", input_filename, lineno); |
---|
1642 | else |
---|
1643 | fprintf (stderr, "%s: ", progname); |
---|
1644 | vmessage ("sorry, not implemented", s, ap); |
---|
1645 | fputc ('\n', stderr); |
---|
1646 | } |
---|
1647 | |
---|
1648 | void |
---|
1649 | sorry VPROTO((char *s, ...)) |
---|
1650 | { |
---|
1651 | #ifndef __STDC__ |
---|
1652 | char *s; |
---|
1653 | #endif |
---|
1654 | va_list ap; |
---|
1655 | |
---|
1656 | VA_START (ap, s); |
---|
1657 | |
---|
1658 | #ifndef __STDC__ |
---|
1659 | s = va_arg (ap, char *); |
---|
1660 | #endif |
---|
1661 | |
---|
1662 | vsorry (s, ap); |
---|
1663 | va_end (ap); |
---|
1664 | } |
---|
1665 | |
---|
1666 | /* Apologize for not implementing some feature, then quit. */ |
---|
1667 | |
---|
1668 | static void |
---|
1669 | v_really_sorry (s, ap) |
---|
1670 | char *s; |
---|
1671 | va_list ap; |
---|
1672 | { |
---|
1673 | sorrycount++; |
---|
1674 | if (input_filename) |
---|
1675 | fprintf (stderr, "%s:%d: ", input_filename, lineno); |
---|
1676 | else |
---|
1677 | fprintf (stderr, "%s: ", progname); |
---|
1678 | vmessage ("sorry, not implemented", s, ap); |
---|
1679 | fatal (" (fatal)\n"); |
---|
1680 | } |
---|
1681 | |
---|
1682 | void |
---|
1683 | really_sorry VPROTO((char *s, ...)) |
---|
1684 | { |
---|
1685 | #ifndef __STDC__ |
---|
1686 | char *s; |
---|
1687 | #endif |
---|
1688 | va_list ap; |
---|
1689 | |
---|
1690 | VA_START (ap, s); |
---|
1691 | |
---|
1692 | #ifndef __STDC__ |
---|
1693 | s = va_arg (ap, char *); |
---|
1694 | #endif |
---|
1695 | |
---|
1696 | v_really_sorry (s, ap); |
---|
1697 | va_end (ap); |
---|
1698 | } |
---|
1699 | |
---|
1700 | /* More 'friendly' abort that prints the line and file. |
---|
1701 | config.h can #define abort fancy_abort if you like that sort of thing. |
---|
1702 | |
---|
1703 | I don't think this is actually a good idea. |
---|
1704 | Other sorts of crashes will look a certain way. |
---|
1705 | It is a good thing if crashes from calling abort look the same way. |
---|
1706 | -- RMS */ |
---|
1707 | |
---|
1708 | void |
---|
1709 | fancy_abort () |
---|
1710 | { |
---|
1711 | fatal ("internal gcc abort"); |
---|
1712 | } |
---|
1713 | |
---|
1714 | /* This calls abort and is used to avoid problems when abort if a macro. |
---|
1715 | It is used when we need to pass the address of abort. */ |
---|
1716 | |
---|
1717 | void |
---|
1718 | do_abort () |
---|
1719 | { |
---|
1720 | abort (); |
---|
1721 | } |
---|
1722 | |
---|
1723 | /* When `malloc.c' is compiled with `rcheck' defined, |
---|
1724 | it calls this function to report clobberage. */ |
---|
1725 | |
---|
1726 | void |
---|
1727 | botch (s) |
---|
1728 | { |
---|
1729 | abort (); |
---|
1730 | } |
---|
1731 | |
---|
1732 | /* Same as `malloc' but report error if no memory available. */ |
---|
1733 | |
---|
1734 | char * |
---|
1735 | xmalloc (size) |
---|
1736 | unsigned size; |
---|
1737 | { |
---|
1738 | register char *value = (char *) malloc (size); |
---|
1739 | if (value == 0) |
---|
1740 | fatal ("virtual memory exhausted"); |
---|
1741 | return value; |
---|
1742 | } |
---|
1743 | |
---|
1744 | /* Same as `realloc' but report error if no memory available. */ |
---|
1745 | |
---|
1746 | char * |
---|
1747 | xrealloc (ptr, size) |
---|
1748 | char *ptr; |
---|
1749 | int size; |
---|
1750 | { |
---|
1751 | char *result = (char *) realloc (ptr, size); |
---|
1752 | if (!result) |
---|
1753 | fatal ("virtual memory exhausted"); |
---|
1754 | return result; |
---|
1755 | } |
---|
1756 | |
---|
1757 | /* Return the logarithm of X, base 2, considering X unsigned, |
---|
1758 | if X is a power of 2. Otherwise, returns -1. |
---|
1759 | |
---|
1760 | This should be used via the `exact_log2' macro. */ |
---|
1761 | |
---|
1762 | int |
---|
1763 | exact_log2_wide (x) |
---|
1764 | register unsigned HOST_WIDE_INT x; |
---|
1765 | { |
---|
1766 | register int log = 0; |
---|
1767 | /* Test for 0 or a power of 2. */ |
---|
1768 | if (x == 0 || x != (x & -x)) |
---|
1769 | return -1; |
---|
1770 | while ((x >>= 1) != 0) |
---|
1771 | log++; |
---|
1772 | return log; |
---|
1773 | } |
---|
1774 | |
---|
1775 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. |
---|
1776 | If X is 0, return -1. |
---|
1777 | |
---|
1778 | This should be used via the floor_log2 macro. */ |
---|
1779 | |
---|
1780 | int |
---|
1781 | floor_log2_wide (x) |
---|
1782 | register unsigned HOST_WIDE_INT x; |
---|
1783 | { |
---|
1784 | register int log = -1; |
---|
1785 | while (x != 0) |
---|
1786 | log++, |
---|
1787 | x >>= 1; |
---|
1788 | return log; |
---|
1789 | } |
---|
1790 | |
---|
1791 | int float_handled; |
---|
1792 | jmp_buf float_handler; |
---|
1793 | |
---|
1794 | /* Specify where to longjmp to when a floating arithmetic error happens. |
---|
1795 | If HANDLER is 0, it means don't handle the errors any more. */ |
---|
1796 | |
---|
1797 | void |
---|
1798 | set_float_handler (handler) |
---|
1799 | jmp_buf handler; |
---|
1800 | { |
---|
1801 | float_handled = (handler != 0); |
---|
1802 | if (handler) |
---|
1803 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
---|
1804 | } |
---|
1805 | |
---|
1806 | /* Specify, in HANDLER, where to longjmp to when a floating arithmetic |
---|
1807 | error happens, pushing the previous specification into OLD_HANDLER. |
---|
1808 | Return an indication of whether there was a previous handler in effect. */ |
---|
1809 | |
---|
1810 | int |
---|
1811 | push_float_handler (handler, old_handler) |
---|
1812 | jmp_buf handler, old_handler; |
---|
1813 | { |
---|
1814 | int was_handled = float_handled; |
---|
1815 | |
---|
1816 | float_handled = 1; |
---|
1817 | if (was_handled) |
---|
1818 | bcopy ((char *) float_handler, (char *) old_handler, |
---|
1819 | sizeof (float_handler)); |
---|
1820 | |
---|
1821 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
---|
1822 | return was_handled; |
---|
1823 | } |
---|
1824 | |
---|
1825 | /* Restore the previous specification of whether and where to longjmp to |
---|
1826 | when a floating arithmetic error happens. */ |
---|
1827 | |
---|
1828 | void |
---|
1829 | pop_float_handler (handled, handler) |
---|
1830 | int handled; |
---|
1831 | jmp_buf handler; |
---|
1832 | { |
---|
1833 | float_handled = handled; |
---|
1834 | if (handled) |
---|
1835 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
---|
1836 | } |
---|
1837 | |
---|
1838 | /* Signals actually come here. */ |
---|
1839 | |
---|
1840 | static void |
---|
1841 | float_signal (signo) |
---|
1842 | /* If this is missing, some compilers complain. */ |
---|
1843 | int signo; |
---|
1844 | { |
---|
1845 | if (float_handled == 0) |
---|
1846 | abort (); |
---|
1847 | #if defined (USG) || defined (hpux) |
---|
1848 | signal (SIGFPE, float_signal); /* re-enable the signal catcher */ |
---|
1849 | #endif |
---|
1850 | float_handled = 0; |
---|
1851 | signal (SIGFPE, float_signal); |
---|
1852 | longjmp (float_handler, 1); |
---|
1853 | } |
---|
1854 | |
---|
1855 | /* Handler for SIGPIPE. */ |
---|
1856 | |
---|
1857 | static void |
---|
1858 | pipe_closed (signo) |
---|
1859 | /* If this is missing, some compilers complain. */ |
---|
1860 | int signo; |
---|
1861 | { |
---|
1862 | fatal ("output pipe has been closed"); |
---|
1863 | } |
---|
1864 | |
---|
1865 | /* Strip off a legitimate source ending from the input string NAME of |
---|
1866 | length LEN. Rather than having to know the names used by all of |
---|
1867 | our front ends, we strip off an ending of a period followed by one, |
---|
1868 | two, or three characters. */ |
---|
1869 | |
---|
1870 | void |
---|
1871 | strip_off_ending (name, len) |
---|
1872 | char *name; |
---|
1873 | int len; |
---|
1874 | { |
---|
1875 | if (len > 2 && name[len - 2] == '.') |
---|
1876 | name[len - 2] = '\0'; |
---|
1877 | else if (len > 3 && name[len - 3] == '.') |
---|
1878 | name[len - 3] = '\0'; |
---|
1879 | else if (len > 4 && name[len - 4] == '.') |
---|
1880 | name[len - 4] = '\0'; |
---|
1881 | } |
---|
1882 | |
---|
1883 | /* Output a quoted string. */ |
---|
1884 | void |
---|
1885 | output_quoted_string (asm_file, string) |
---|
1886 | FILE *asm_file; |
---|
1887 | char *string; |
---|
1888 | { |
---|
1889 | char c; |
---|
1890 | |
---|
1891 | putc ('\"', asm_file); |
---|
1892 | while ((c = *string++) != 0) |
---|
1893 | { |
---|
1894 | if (c == '\"' || c == '\\') |
---|
1895 | putc ('\\', asm_file); |
---|
1896 | putc (c, asm_file); |
---|
1897 | } |
---|
1898 | putc ('\"', asm_file); |
---|
1899 | } |
---|
1900 | |
---|
1901 | /* Output a file name in the form wanted by System V. */ |
---|
1902 | |
---|
1903 | void |
---|
1904 | output_file_directive (asm_file, input_name) |
---|
1905 | FILE *asm_file; |
---|
1906 | char *input_name; |
---|
1907 | { |
---|
1908 | int len = strlen (input_name); |
---|
1909 | char *na = input_name + len; |
---|
1910 | |
---|
1911 | /* NA gets INPUT_NAME sans directory names. */ |
---|
1912 | while (na > input_name) |
---|
1913 | { |
---|
1914 | if (na[-1] == '/') |
---|
1915 | break; |
---|
1916 | na--; |
---|
1917 | } |
---|
1918 | |
---|
1919 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME |
---|
1920 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); |
---|
1921 | #else |
---|
1922 | #ifdef ASM_OUTPUT_SOURCE_FILENAME |
---|
1923 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); |
---|
1924 | #else |
---|
1925 | fprintf (asm_file, "\t.file\t"); |
---|
1926 | output_quoted_string (asm_file, na); |
---|
1927 | fputc ('\n', asm_file); |
---|
1928 | #endif |
---|
1929 | #endif |
---|
1930 | } |
---|
1931 | |
---|
1932 | /* Routine to build language identifier for object file. */ |
---|
1933 | static void |
---|
1934 | output_lang_identify (asm_out_file) |
---|
1935 | FILE *asm_out_file; |
---|
1936 | { |
---|
1937 | int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1; |
---|
1938 | char *s = (char *) alloca (len); |
---|
1939 | sprintf (s, "__gnu_compiled_%s", lang_identify ()); |
---|
1940 | ASM_OUTPUT_LABEL (asm_out_file, s); |
---|
1941 | } |
---|
1942 | |
---|
1943 | /* Routine to open a dump file. */ |
---|
1944 | static FILE * |
---|
1945 | open_dump_file (base_name, suffix) |
---|
1946 | char *base_name; |
---|
1947 | char *suffix; |
---|
1948 | { |
---|
1949 | FILE *f; |
---|
1950 | char *dumpname = (char *) alloca (strlen (base_name) + strlen (suffix) + 1); |
---|
1951 | |
---|
1952 | strcpy (dumpname, base_name); |
---|
1953 | strcat (dumpname, suffix); |
---|
1954 | f = fopen (dumpname, "w"); |
---|
1955 | if (f == 0) |
---|
1956 | pfatal_with_name (dumpname); |
---|
1957 | return f; |
---|
1958 | } |
---|
1959 | |
---|
1960 | /* Compile an entire file of output from cpp, named NAME. |
---|
1961 | Write a file of assembly output and various debugging dumps. */ |
---|
1962 | |
---|
1963 | static void |
---|
1964 | compile_file (name) |
---|
1965 | char *name; |
---|
1966 | { |
---|
1967 | tree globals; |
---|
1968 | int start_time; |
---|
1969 | |
---|
1970 | int name_specified = name != 0; |
---|
1971 | |
---|
1972 | if (dump_base_name == 0) |
---|
1973 | dump_base_name = name ? name : "gccdump"; |
---|
1974 | |
---|
1975 | parse_time = 0; |
---|
1976 | varconst_time = 0; |
---|
1977 | integration_time = 0; |
---|
1978 | jump_time = 0; |
---|
1979 | cse_time = 0; |
---|
1980 | loop_time = 0; |
---|
1981 | cse2_time = 0; |
---|
1982 | flow_time = 0; |
---|
1983 | combine_time = 0; |
---|
1984 | sched_time = 0; |
---|
1985 | local_alloc_time = 0; |
---|
1986 | global_alloc_time = 0; |
---|
1987 | sched2_time = 0; |
---|
1988 | dbr_sched_time = 0; |
---|
1989 | shorten_branch_time = 0; |
---|
1990 | stack_reg_time = 0; |
---|
1991 | final_time = 0; |
---|
1992 | symout_time = 0; |
---|
1993 | dump_time = 0; |
---|
1994 | |
---|
1995 | /* Open input file. */ |
---|
1996 | |
---|
1997 | if (name == 0 || !strcmp (name, "-")) |
---|
1998 | { |
---|
1999 | finput = stdin; |
---|
2000 | name = "stdin"; |
---|
2001 | } |
---|
2002 | else |
---|
2003 | finput = fopen (name, "r"); |
---|
2004 | if (finput == 0) |
---|
2005 | pfatal_with_name (name); |
---|
2006 | |
---|
2007 | #ifdef IO_BUFFER_SIZE |
---|
2008 | setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE), _IOFBF, IO_BUFFER_SIZE); |
---|
2009 | #endif |
---|
2010 | |
---|
2011 | /* Initialize data in various passes. */ |
---|
2012 | |
---|
2013 | init_obstacks (); |
---|
2014 | init_tree_codes (); |
---|
2015 | init_lex (); |
---|
2016 | /* Some of these really don't need to be called when generating bytecode, |
---|
2017 | but the options would have to be parsed first to know that. -bson */ |
---|
2018 | init_rtl (); |
---|
2019 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
---|
2020 | || debug_info_level == DINFO_LEVEL_VERBOSE); |
---|
2021 | init_regs (); |
---|
2022 | init_decl_processing (); |
---|
2023 | init_optabs (); |
---|
2024 | init_stmt (); |
---|
2025 | init_expmed (); |
---|
2026 | init_expr_once (); |
---|
2027 | init_loop (); |
---|
2028 | init_reload (); |
---|
2029 | |
---|
2030 | if (flag_caller_saves) |
---|
2031 | init_caller_save (); |
---|
2032 | |
---|
2033 | /* If auxiliary info generation is desired, open the output file. |
---|
2034 | This goes in the same directory as the source file--unlike |
---|
2035 | all the other output files. */ |
---|
2036 | if (flag_gen_aux_info) |
---|
2037 | { |
---|
2038 | aux_info_file = fopen (aux_info_file_name, "w"); |
---|
2039 | if (aux_info_file == 0) |
---|
2040 | pfatal_with_name (aux_info_file_name); |
---|
2041 | } |
---|
2042 | |
---|
2043 | /* If rtl dump desired, open the output file. */ |
---|
2044 | if (rtl_dump) |
---|
2045 | rtl_dump_file = open_dump_file (dump_base_name, ".rtl"); |
---|
2046 | |
---|
2047 | /* If jump_opt dump desired, open the output file. */ |
---|
2048 | if (jump_opt_dump) |
---|
2049 | jump_opt_dump_file = open_dump_file (dump_base_name, ".jump"); |
---|
2050 | |
---|
2051 | /* If cse dump desired, open the output file. */ |
---|
2052 | if (cse_dump) |
---|
2053 | cse_dump_file = open_dump_file (dump_base_name, ".cse"); |
---|
2054 | |
---|
2055 | /* If loop dump desired, open the output file. */ |
---|
2056 | if (loop_dump) |
---|
2057 | loop_dump_file = open_dump_file (dump_base_name, ".loop"); |
---|
2058 | |
---|
2059 | /* If cse2 dump desired, open the output file. */ |
---|
2060 | if (cse2_dump) |
---|
2061 | cse2_dump_file = open_dump_file (dump_base_name, ".cse2"); |
---|
2062 | |
---|
2063 | /* If flow dump desired, open the output file. */ |
---|
2064 | if (flow_dump) |
---|
2065 | flow_dump_file = open_dump_file (dump_base_name, ".flow"); |
---|
2066 | |
---|
2067 | /* If combine dump desired, open the output file. */ |
---|
2068 | if (combine_dump) |
---|
2069 | combine_dump_file = open_dump_file (dump_base_name, ".combine"); |
---|
2070 | |
---|
2071 | /* If scheduling dump desired, open the output file. */ |
---|
2072 | if (sched_dump) |
---|
2073 | sched_dump_file = open_dump_file (dump_base_name, ".sched"); |
---|
2074 | |
---|
2075 | /* If local_reg dump desired, open the output file. */ |
---|
2076 | if (local_reg_dump) |
---|
2077 | local_reg_dump_file = open_dump_file (dump_base_name, ".lreg"); |
---|
2078 | |
---|
2079 | /* If global_reg dump desired, open the output file. */ |
---|
2080 | if (global_reg_dump) |
---|
2081 | global_reg_dump_file = open_dump_file (dump_base_name, ".greg"); |
---|
2082 | |
---|
2083 | /* If 2nd scheduling dump desired, open the output file. */ |
---|
2084 | if (sched2_dump) |
---|
2085 | sched2_dump_file = open_dump_file (dump_base_name, ".sched2"); |
---|
2086 | |
---|
2087 | /* If jump2_opt dump desired, open the output file. */ |
---|
2088 | if (jump2_opt_dump) |
---|
2089 | jump2_opt_dump_file = open_dump_file (dump_base_name, ".jump2"); |
---|
2090 | |
---|
2091 | /* If dbr_sched dump desired, open the output file. */ |
---|
2092 | if (dbr_sched_dump) |
---|
2093 | dbr_sched_dump_file = open_dump_file (dump_base_name, ".dbr"); |
---|
2094 | |
---|
2095 | #ifdef STACK_REGS |
---|
2096 | |
---|
2097 | /* If stack_reg dump desired, open the output file. */ |
---|
2098 | if (stack_reg_dump) |
---|
2099 | stack_reg_dump_file = open_dump_file (dump_base_name, ".stack"); |
---|
2100 | |
---|
2101 | #endif |
---|
2102 | |
---|
2103 | /* Open assembler code output file. */ |
---|
2104 | |
---|
2105 | if (! name_specified && asm_file_name == 0) |
---|
2106 | asm_out_file = stdout; |
---|
2107 | else |
---|
2108 | { |
---|
2109 | int len = strlen (dump_base_name); |
---|
2110 | register char *dumpname = (char *) xmalloc (len + 6); |
---|
2111 | strcpy (dumpname, dump_base_name); |
---|
2112 | strip_off_ending (dumpname, len); |
---|
2113 | strcat (dumpname, ".s"); |
---|
2114 | if (asm_file_name == 0) |
---|
2115 | { |
---|
2116 | asm_file_name = (char *) xmalloc (strlen (dumpname) + 1); |
---|
2117 | strcpy (asm_file_name, dumpname); |
---|
2118 | } |
---|
2119 | if (!strcmp (asm_file_name, "-")) |
---|
2120 | asm_out_file = stdout; |
---|
2121 | else |
---|
2122 | asm_out_file = fopen (asm_file_name, "w"); |
---|
2123 | if (asm_out_file == 0) |
---|
2124 | pfatal_with_name (asm_file_name); |
---|
2125 | } |
---|
2126 | |
---|
2127 | #ifdef IO_BUFFER_SIZE |
---|
2128 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), |
---|
2129 | _IOFBF, IO_BUFFER_SIZE); |
---|
2130 | #endif |
---|
2131 | |
---|
2132 | input_filename = name; |
---|
2133 | |
---|
2134 | /* Put an entry on the input file stack for the main input file. */ |
---|
2135 | input_file_stack |
---|
2136 | = (struct file_stack *) xmalloc (sizeof (struct file_stack)); |
---|
2137 | input_file_stack->next = 0; |
---|
2138 | input_file_stack->name = input_filename; |
---|
2139 | |
---|
2140 | /* Perform language-specific initialization. |
---|
2141 | This may set main_input_filename. */ |
---|
2142 | lang_init (); |
---|
2143 | |
---|
2144 | /* If the input doesn't start with a #line, use the input name |
---|
2145 | as the official input file name. */ |
---|
2146 | if (main_input_filename == 0) |
---|
2147 | main_input_filename = name; |
---|
2148 | |
---|
2149 | if (!output_bytecode) |
---|
2150 | { |
---|
2151 | ASM_FILE_START (asm_out_file); |
---|
2152 | } |
---|
2153 | |
---|
2154 | /* Output something to inform GDB that this compilation was by GCC. Also |
---|
2155 | serves to tell GDB file consists of bytecodes. */ |
---|
2156 | if (output_bytecode) |
---|
2157 | fprintf (asm_out_file, "bc_gcc2_compiled.:\n"); |
---|
2158 | else |
---|
2159 | { |
---|
2160 | #ifndef ASM_IDENTIFY_GCC |
---|
2161 | fprintf (asm_out_file, "gcc2_compiled.:\n"); |
---|
2162 | #else |
---|
2163 | ASM_IDENTIFY_GCC (asm_out_file); |
---|
2164 | #endif |
---|
2165 | } |
---|
2166 | |
---|
2167 | /* Output something to identify which front-end produced this file. */ |
---|
2168 | #ifdef ASM_IDENTIFY_LANGUAGE |
---|
2169 | ASM_IDENTIFY_LANGUAGE (asm_out_file); |
---|
2170 | #endif |
---|
2171 | |
---|
2172 | if (output_bytecode) |
---|
2173 | { |
---|
2174 | if (profile_flag || profile_block_flag) |
---|
2175 | error ("profiling not supported in bytecode compilation"); |
---|
2176 | } |
---|
2177 | else |
---|
2178 | { |
---|
2179 | /* ??? Note: There used to be a conditional here |
---|
2180 | to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined. |
---|
2181 | This was to guarantee separation between gcc_compiled. and |
---|
2182 | the first function, for the sake of dbx on Suns. |
---|
2183 | However, having the extra zero here confused the Emacs |
---|
2184 | code for unexec, and might confuse other programs too. |
---|
2185 | Therefore, I took out that change. |
---|
2186 | In future versions we should find another way to solve |
---|
2187 | that dbx problem. -- rms, 23 May 93. */ |
---|
2188 | |
---|
2189 | /* Don't let the first function fall at the same address |
---|
2190 | as gcc_compiled., if profiling. */ |
---|
2191 | if (profile_flag || profile_block_flag) |
---|
2192 | assemble_zeros (UNITS_PER_WORD); |
---|
2193 | } |
---|
2194 | |
---|
2195 | /* If dbx symbol table desired, initialize writing it |
---|
2196 | and output the predefined types. */ |
---|
2197 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
---|
2198 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) |
---|
2199 | TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename, |
---|
2200 | getdecls ())); |
---|
2201 | #endif |
---|
2202 | #ifdef SDB_DEBUGGING_INFO |
---|
2203 | if (write_symbols == SDB_DEBUG) |
---|
2204 | TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename, |
---|
2205 | getdecls ())); |
---|
2206 | #endif |
---|
2207 | #ifdef DWARF_DEBUGGING_INFO |
---|
2208 | if (write_symbols == DWARF_DEBUG) |
---|
2209 | TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename)); |
---|
2210 | #endif |
---|
2211 | |
---|
2212 | /* Initialize yet another pass. */ |
---|
2213 | |
---|
2214 | if (!output_bytecode) |
---|
2215 | init_final (main_input_filename); |
---|
2216 | |
---|
2217 | start_time = get_run_time (); |
---|
2218 | |
---|
2219 | /* Call the parser, which parses the entire file |
---|
2220 | (calling rest_of_compilation for each function). */ |
---|
2221 | |
---|
2222 | if (yyparse () != 0) |
---|
2223 | { |
---|
2224 | if (errorcount == 0) |
---|
2225 | fprintf (stderr, "Errors detected in input file (your bison.simple is out of date)"); |
---|
2226 | |
---|
2227 | /* In case there were missing closebraces, |
---|
2228 | get us back to the global binding level. */ |
---|
2229 | while (! global_bindings_p ()) |
---|
2230 | poplevel (0, 0, 0); |
---|
2231 | } |
---|
2232 | |
---|
2233 | /* Compilation is now finished except for writing |
---|
2234 | what's left of the symbol table output. */ |
---|
2235 | |
---|
2236 | parse_time += get_run_time () - start_time; |
---|
2237 | |
---|
2238 | parse_time -= integration_time; |
---|
2239 | parse_time -= varconst_time; |
---|
2240 | |
---|
2241 | globals = getdecls (); |
---|
2242 | |
---|
2243 | /* Really define vars that have had only a tentative definition. |
---|
2244 | Really output inline functions that must actually be callable |
---|
2245 | and have not been output so far. */ |
---|
2246 | |
---|
2247 | { |
---|
2248 | int len = list_length (globals); |
---|
2249 | tree *vec = (tree *) alloca (sizeof (tree) * len); |
---|
2250 | int i; |
---|
2251 | tree decl; |
---|
2252 | int reconsider = 1; |
---|
2253 | |
---|
2254 | /* Process the decls in reverse order--earliest first. |
---|
2255 | Put them into VEC from back to front, then take out from front. */ |
---|
2256 | |
---|
2257 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) |
---|
2258 | vec[len - i - 1] = decl; |
---|
2259 | |
---|
2260 | for (i = 0; i < len; i++) |
---|
2261 | { |
---|
2262 | decl = vec[i]; |
---|
2263 | |
---|
2264 | /* We're not deferring this any longer. */ |
---|
2265 | DECL_DEFER_OUTPUT (decl) = 0; |
---|
2266 | |
---|
2267 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0 |
---|
2268 | && incomplete_decl_finalize_hook != 0) |
---|
2269 | (*incomplete_decl_finalize_hook) (decl); |
---|
2270 | } |
---|
2271 | |
---|
2272 | /* Now emit any global variables or functions that we have been putting |
---|
2273 | off. We need to loop in case one of the things emitted here |
---|
2274 | references another one which comes earlier in the list. */ |
---|
2275 | while (reconsider) |
---|
2276 | { |
---|
2277 | reconsider = 0; |
---|
2278 | for (i = 0; i < len; i++) |
---|
2279 | { |
---|
2280 | decl = vec[i]; |
---|
2281 | |
---|
2282 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) |
---|
2283 | continue; |
---|
2284 | |
---|
2285 | /* Don't write out static consts, unless we still need them. |
---|
2286 | |
---|
2287 | We also keep static consts if not optimizing (for debugging). |
---|
2288 | ??? They might be better written into the debug information. |
---|
2289 | This is possible when using DWARF. |
---|
2290 | |
---|
2291 | A language processor that wants static constants to be always |
---|
2292 | written out (even if it is not used) is responsible for |
---|
2293 | calling rest_of_decl_compilation itself. E.g. the C front-end |
---|
2294 | calls rest_of_decl_compilation from finish_decl. |
---|
2295 | One motivation for this is that is conventional in some |
---|
2296 | environments to write things like: |
---|
2297 | static const char rcsid[] = "... version string ..."; |
---|
2298 | intending to force the string to be in the executable. |
---|
2299 | |
---|
2300 | A language processor that would prefer to have unneeded |
---|
2301 | static constants "optimized away" would just defer writing |
---|
2302 | them out until here. E.g. C++ does this, because static |
---|
2303 | constants are often defined in header files. |
---|
2304 | |
---|
2305 | ??? A tempting alternative (for both C and C++) would be |
---|
2306 | to force a constant to be written if and only if it is |
---|
2307 | defined in a main file, as opposed to an include file. */ |
---|
2308 | |
---|
2309 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) |
---|
2310 | && (! TREE_READONLY (decl) |
---|
2311 | || TREE_PUBLIC (decl) |
---|
2312 | || !optimize |
---|
2313 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
---|
2314 | { |
---|
2315 | reconsider = 1; |
---|
2316 | rest_of_decl_compilation (decl, NULL_PTR, 1, 1); |
---|
2317 | } |
---|
2318 | |
---|
2319 | if (TREE_CODE (decl) == FUNCTION_DECL |
---|
2320 | && DECL_INITIAL (decl) != 0 |
---|
2321 | && DECL_SAVED_INSNS (decl) != 0 |
---|
2322 | && (flag_keep_inline_functions |
---|
2323 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
---|
2324 | { |
---|
2325 | reconsider = 1; |
---|
2326 | temporary_allocation (); |
---|
2327 | output_inline_function (decl); |
---|
2328 | permanent_allocation (1); |
---|
2329 | } |
---|
2330 | } |
---|
2331 | } |
---|
2332 | |
---|
2333 | for (i = 0; i < len; i++) |
---|
2334 | { |
---|
2335 | decl = vec[i]; |
---|
2336 | |
---|
2337 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) |
---|
2338 | && ! TREE_ASM_WRITTEN (decl)) |
---|
2339 | /* Cancel the RTL for this decl so that, if debugging info |
---|
2340 | output for global variables is still to come, |
---|
2341 | this one will be omitted. */ |
---|
2342 | DECL_RTL (decl) = NULL; |
---|
2343 | |
---|
2344 | /* Warn about any function |
---|
2345 | declared static but not defined. |
---|
2346 | We don't warn about variables, |
---|
2347 | because many programs have static variables |
---|
2348 | that exist only to get some text into the object file. */ |
---|
2349 | if (TREE_CODE (decl) == FUNCTION_DECL |
---|
2350 | && (warn_unused |
---|
2351 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
---|
2352 | && DECL_INITIAL (decl) == 0 |
---|
2353 | && DECL_EXTERNAL (decl) |
---|
2354 | && ! TREE_PUBLIC (decl)) |
---|
2355 | { |
---|
2356 | pedwarn_with_decl (decl, |
---|
2357 | "`%s' declared `static' but never defined"); |
---|
2358 | /* This symbol is effectively an "extern" declaration now. */ |
---|
2359 | TREE_PUBLIC (decl) = 1; |
---|
2360 | assemble_external (decl); |
---|
2361 | } |
---|
2362 | |
---|
2363 | /* Warn about static fns or vars defined but not used, |
---|
2364 | but not about inline functions or static consts |
---|
2365 | since defining those in header files is normal practice. */ |
---|
2366 | if (warn_unused |
---|
2367 | && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl)) |
---|
2368 | || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) |
---|
2369 | && ! DECL_IN_SYSTEM_HEADER (decl) |
---|
2370 | && ! DECL_EXTERNAL (decl) |
---|
2371 | && ! TREE_PUBLIC (decl) |
---|
2372 | && ! TREE_USED (decl) |
---|
2373 | && ! DECL_REGISTER (decl) |
---|
2374 | /* The TREE_USED bit for file-scope decls |
---|
2375 | is kept in the identifier, to handle multiple |
---|
2376 | external decls in different scopes. */ |
---|
2377 | && ! TREE_USED (DECL_NAME (decl))) |
---|
2378 | warning_with_decl (decl, "`%s' defined but not used"); |
---|
2379 | |
---|
2380 | #ifdef SDB_DEBUGGING_INFO |
---|
2381 | /* The COFF linker can move initialized global vars to the end. |
---|
2382 | And that can screw up the symbol ordering. |
---|
2383 | By putting the symbols in that order to begin with, |
---|
2384 | we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */ |
---|
2385 | if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL |
---|
2386 | && TREE_PUBLIC (decl) && DECL_INITIAL (decl) |
---|
2387 | && ! DECL_EXTERNAL (decl) |
---|
2388 | && DECL_RTL (decl) != 0) |
---|
2389 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); |
---|
2390 | |
---|
2391 | /* Output COFF information for non-global |
---|
2392 | file-scope initialized variables. */ |
---|
2393 | if (write_symbols == SDB_DEBUG |
---|
2394 | && TREE_CODE (decl) == VAR_DECL |
---|
2395 | && DECL_INITIAL (decl) |
---|
2396 | && ! DECL_EXTERNAL (decl) |
---|
2397 | && DECL_RTL (decl) != 0 |
---|
2398 | && GET_CODE (DECL_RTL (decl)) == MEM) |
---|
2399 | TIMEVAR (symout_time, sdbout_toplevel_data (decl)); |
---|
2400 | #endif /* SDB_DEBUGGING_INFO */ |
---|
2401 | #ifdef DWARF_DEBUGGING_INFO |
---|
2402 | /* Output DWARF information for file-scope tentative data object |
---|
2403 | declarations, file-scope (extern) function declarations (which |
---|
2404 | had no corresponding body) and file-scope tagged type declarations |
---|
2405 | and definitions which have not yet been forced out. */ |
---|
2406 | |
---|
2407 | if (write_symbols == DWARF_DEBUG |
---|
2408 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) |
---|
2409 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1)); |
---|
2410 | #endif |
---|
2411 | } |
---|
2412 | } |
---|
2413 | |
---|
2414 | /* Write out any pending weak symbol declarations. */ |
---|
2415 | |
---|
2416 | weak_finish (); |
---|
2417 | |
---|
2418 | /* Do dbx symbols */ |
---|
2419 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
---|
2420 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) |
---|
2421 | TIMEVAR (symout_time, |
---|
2422 | { |
---|
2423 | dbxout_finish (asm_out_file, main_input_filename); |
---|
2424 | }); |
---|
2425 | #endif |
---|
2426 | |
---|
2427 | #ifdef DWARF_DEBUGGING_INFO |
---|
2428 | if (write_symbols == DWARF_DEBUG) |
---|
2429 | TIMEVAR (symout_time, |
---|
2430 | { |
---|
2431 | dwarfout_finish (); |
---|
2432 | }); |
---|
2433 | #endif |
---|
2434 | |
---|
2435 | /* Output some stuff at end of file if nec. */ |
---|
2436 | |
---|
2437 | if (!output_bytecode) |
---|
2438 | { |
---|
2439 | end_final (main_input_filename); |
---|
2440 | |
---|
2441 | #ifdef ASM_FILE_END |
---|
2442 | ASM_FILE_END (asm_out_file); |
---|
2443 | #endif |
---|
2444 | } |
---|
2445 | |
---|
2446 | /* Language-specific end of compilation actions. */ |
---|
2447 | |
---|
2448 | lang_finish (); |
---|
2449 | |
---|
2450 | if (output_bytecode) |
---|
2451 | bc_write_file (asm_out_file); |
---|
2452 | |
---|
2453 | /* Close the dump files. */ |
---|
2454 | |
---|
2455 | if (flag_gen_aux_info) |
---|
2456 | { |
---|
2457 | fclose (aux_info_file); |
---|
2458 | if (errorcount) |
---|
2459 | unlink (aux_info_file_name); |
---|
2460 | } |
---|
2461 | |
---|
2462 | if (rtl_dump) |
---|
2463 | fclose (rtl_dump_file); |
---|
2464 | |
---|
2465 | if (jump_opt_dump) |
---|
2466 | fclose (jump_opt_dump_file); |
---|
2467 | |
---|
2468 | if (cse_dump) |
---|
2469 | fclose (cse_dump_file); |
---|
2470 | |
---|
2471 | if (loop_dump) |
---|
2472 | fclose (loop_dump_file); |
---|
2473 | |
---|
2474 | if (cse2_dump) |
---|
2475 | fclose (cse2_dump_file); |
---|
2476 | |
---|
2477 | if (flow_dump) |
---|
2478 | fclose (flow_dump_file); |
---|
2479 | |
---|
2480 | if (combine_dump) |
---|
2481 | { |
---|
2482 | dump_combine_total_stats (combine_dump_file); |
---|
2483 | fclose (combine_dump_file); |
---|
2484 | } |
---|
2485 | |
---|
2486 | if (sched_dump) |
---|
2487 | fclose (sched_dump_file); |
---|
2488 | |
---|
2489 | if (local_reg_dump) |
---|
2490 | fclose (local_reg_dump_file); |
---|
2491 | |
---|
2492 | if (global_reg_dump) |
---|
2493 | fclose (global_reg_dump_file); |
---|
2494 | |
---|
2495 | if (sched2_dump) |
---|
2496 | fclose (sched2_dump_file); |
---|
2497 | |
---|
2498 | if (jump2_opt_dump) |
---|
2499 | fclose (jump2_opt_dump_file); |
---|
2500 | |
---|
2501 | if (dbr_sched_dump) |
---|
2502 | fclose (dbr_sched_dump_file); |
---|
2503 | |
---|
2504 | #ifdef STACK_REGS |
---|
2505 | if (stack_reg_dump) |
---|
2506 | fclose (stack_reg_dump_file); |
---|
2507 | #endif |
---|
2508 | |
---|
2509 | /* Close non-debugging input and output files. Take special care to note |
---|
2510 | whether fclose returns an error, since the pages might still be on the |
---|
2511 | buffer chain while the file is open. */ |
---|
2512 | |
---|
2513 | fclose (finput); |
---|
2514 | if (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0) |
---|
2515 | fatal_io_error (asm_file_name); |
---|
2516 | |
---|
2517 | /* Print the times. */ |
---|
2518 | |
---|
2519 | if (! quiet_flag) |
---|
2520 | { |
---|
2521 | fprintf (stderr,"\n"); |
---|
2522 | print_time ("parse", parse_time); |
---|
2523 | |
---|
2524 | if (!output_bytecode) |
---|
2525 | { |
---|
2526 | print_time ("integration", integration_time); |
---|
2527 | print_time ("jump", jump_time); |
---|
2528 | print_time ("cse", cse_time); |
---|
2529 | print_time ("loop", loop_time); |
---|
2530 | print_time ("cse2", cse2_time); |
---|
2531 | print_time ("flow", flow_time); |
---|
2532 | print_time ("combine", combine_time); |
---|
2533 | print_time ("sched", sched_time); |
---|
2534 | print_time ("local-alloc", local_alloc_time); |
---|
2535 | print_time ("global-alloc", global_alloc_time); |
---|
2536 | print_time ("sched2", sched2_time); |
---|
2537 | print_time ("dbranch", dbr_sched_time); |
---|
2538 | print_time ("shorten-branch", shorten_branch_time); |
---|
2539 | print_time ("stack-reg", stack_reg_time); |
---|
2540 | print_time ("final", final_time); |
---|
2541 | print_time ("varconst", varconst_time); |
---|
2542 | print_time ("symout", symout_time); |
---|
2543 | print_time ("dump", dump_time); |
---|
2544 | } |
---|
2545 | } |
---|
2546 | } |
---|
2547 | |
---|
2548 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, |
---|
2549 | and TYPE_DECL nodes. |
---|
2550 | |
---|
2551 | This does nothing for local (non-static) variables. |
---|
2552 | Otherwise, it sets up the RTL and outputs any assembler code |
---|
2553 | (label definition, storage allocation and initialization). |
---|
2554 | |
---|
2555 | DECL is the declaration. If ASMSPEC is nonzero, it specifies |
---|
2556 | the assembler symbol name to be used. TOP_LEVEL is nonzero |
---|
2557 | if this declaration is not within a function. */ |
---|
2558 | |
---|
2559 | void |
---|
2560 | rest_of_decl_compilation (decl, asmspec, top_level, at_end) |
---|
2561 | tree decl; |
---|
2562 | char *asmspec; |
---|
2563 | int top_level; |
---|
2564 | int at_end; |
---|
2565 | { |
---|
2566 | /* Declarations of variables, and of functions defined elsewhere. */ |
---|
2567 | |
---|
2568 | /* The most obvious approach, to put an #ifndef around where |
---|
2569 | this macro is used, doesn't work since it's inside a macro call. */ |
---|
2570 | #ifndef ASM_FINISH_DECLARE_OBJECT |
---|
2571 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END) |
---|
2572 | #endif |
---|
2573 | |
---|
2574 | /* Forward declarations for nested functions are not "external", |
---|
2575 | but we need to treat them as if they were. */ |
---|
2576 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
---|
2577 | || TREE_CODE (decl) == FUNCTION_DECL) |
---|
2578 | TIMEVAR (varconst_time, |
---|
2579 | { |
---|
2580 | make_decl_rtl (decl, asmspec, top_level); |
---|
2581 | /* Initialized extern variable exists to be replaced |
---|
2582 | with its value, or represents something that will be |
---|
2583 | output in another file. */ |
---|
2584 | if (! (TREE_CODE (decl) == VAR_DECL |
---|
2585 | && DECL_EXTERNAL (decl) && TREE_READONLY (decl) |
---|
2586 | && DECL_INITIAL (decl) != 0 |
---|
2587 | && DECL_INITIAL (decl) != error_mark_node)) |
---|
2588 | /* Don't output anything |
---|
2589 | when a tentative file-scope definition is seen. |
---|
2590 | But at end of compilation, do output code for them. */ |
---|
2591 | if (! (! at_end && top_level |
---|
2592 | && (DECL_INITIAL (decl) == 0 |
---|
2593 | || DECL_INITIAL (decl) == error_mark_node))) |
---|
2594 | assemble_variable (decl, top_level, at_end, 0); |
---|
2595 | if (decl == last_assemble_variable_decl) |
---|
2596 | { |
---|
2597 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, |
---|
2598 | top_level, at_end); |
---|
2599 | } |
---|
2600 | }); |
---|
2601 | else if (DECL_REGISTER (decl) && asmspec != 0) |
---|
2602 | { |
---|
2603 | if (decode_reg_name (asmspec) >= 0) |
---|
2604 | { |
---|
2605 | DECL_RTL (decl) = 0; |
---|
2606 | make_decl_rtl (decl, asmspec, top_level); |
---|
2607 | } |
---|
2608 | else |
---|
2609 | error ("invalid register name `%s' for register variable", asmspec); |
---|
2610 | } |
---|
2611 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
---|
2612 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) |
---|
2613 | && TREE_CODE (decl) == TYPE_DECL) |
---|
2614 | TIMEVAR (symout_time, dbxout_symbol (decl, 0)); |
---|
2615 | #endif |
---|
2616 | #ifdef SDB_DEBUGGING_INFO |
---|
2617 | else if (write_symbols == SDB_DEBUG && top_level |
---|
2618 | && TREE_CODE (decl) == TYPE_DECL) |
---|
2619 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); |
---|
2620 | #endif |
---|
2621 | } |
---|
2622 | |
---|
2623 | /* Called after finishing a record, union or enumeral type. */ |
---|
2624 | |
---|
2625 | void |
---|
2626 | rest_of_type_compilation (type, toplev) |
---|
2627 | tree type; |
---|
2628 | int toplev; |
---|
2629 | { |
---|
2630 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
---|
2631 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) |
---|
2632 | TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev)); |
---|
2633 | #endif |
---|
2634 | #ifdef SDB_DEBUGGING_INFO |
---|
2635 | if (write_symbols == SDB_DEBUG) |
---|
2636 | TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev)); |
---|
2637 | #endif |
---|
2638 | } |
---|
2639 | |
---|
2640 | /* This is called from finish_function (within yyparse) |
---|
2641 | after each top-level definition is parsed. |
---|
2642 | It is supposed to compile that function or variable |
---|
2643 | and output the assembler code for it. |
---|
2644 | After we return, the tree storage is freed. */ |
---|
2645 | |
---|
2646 | void |
---|
2647 | rest_of_compilation (decl) |
---|
2648 | tree decl; |
---|
2649 | { |
---|
2650 | register rtx insns; |
---|
2651 | int start_time = get_run_time (); |
---|
2652 | int tem; |
---|
2653 | /* Nonzero if we have saved the original DECL_INITIAL of the function, |
---|
2654 | to be restored after we finish compiling the function |
---|
2655 | (for use when compiling inline calls to this function). */ |
---|
2656 | tree saved_block_tree = 0; |
---|
2657 | /* Likewise, for DECL_ARGUMENTS. */ |
---|
2658 | tree saved_arguments = 0; |
---|
2659 | int failure = 0; |
---|
2660 | |
---|
2661 | if (output_bytecode) |
---|
2662 | return; |
---|
2663 | |
---|
2664 | /* If we are reconsidering an inline function |
---|
2665 | at the end of compilation, skip the stuff for making it inline. */ |
---|
2666 | |
---|
2667 | if (DECL_SAVED_INSNS (decl) == 0) |
---|
2668 | { |
---|
2669 | int specd = DECL_INLINE (decl); |
---|
2670 | char *lose; |
---|
2671 | |
---|
2672 | /* If requested, consider whether to make this function inline. */ |
---|
2673 | if (specd || flag_inline_functions) |
---|
2674 | TIMEVAR (integration_time, |
---|
2675 | { |
---|
2676 | lose = function_cannot_inline_p (decl); |
---|
2677 | /* If not optimizing, then make sure the DECL_INLINE |
---|
2678 | bit is off. */ |
---|
2679 | if (lose || ! optimize) |
---|
2680 | { |
---|
2681 | if (warn_inline && specd) |
---|
2682 | warning_with_decl (decl, lose); |
---|
2683 | DECL_INLINE (decl) = 0; |
---|
2684 | DECL_ABSTRACT_ORIGIN (decl) = 0; |
---|
2685 | /* Don't really compile an extern inline function. |
---|
2686 | If we can't make it inline, pretend |
---|
2687 | it was only declared. */ |
---|
2688 | if (DECL_EXTERNAL (decl)) |
---|
2689 | { |
---|
2690 | DECL_INITIAL (decl) = 0; |
---|
2691 | goto exit_rest_of_compilation; |
---|
2692 | } |
---|
2693 | } |
---|
2694 | else |
---|
2695 | DECL_INLINE (decl) = 1; |
---|
2696 | }); |
---|
2697 | |
---|
2698 | insns = get_insns (); |
---|
2699 | |
---|
2700 | /* Dump the rtl code if we are dumping rtl. */ |
---|
2701 | |
---|
2702 | if (rtl_dump) |
---|
2703 | TIMEVAR (dump_time, |
---|
2704 | { |
---|
2705 | fprintf (rtl_dump_file, "\n;; Function %s\n\n", |
---|
2706 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
2707 | if (DECL_SAVED_INSNS (decl)) |
---|
2708 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); |
---|
2709 | print_rtl (rtl_dump_file, insns); |
---|
2710 | fflush (rtl_dump_file); |
---|
2711 | }); |
---|
2712 | |
---|
2713 | /* If function is inline, and we don't yet know whether to |
---|
2714 | compile it by itself, defer decision till end of compilation. |
---|
2715 | finish_compilation will call rest_of_compilation again |
---|
2716 | for those functions that need to be output. Also defer those |
---|
2717 | functions that we are supposed to defer. */ |
---|
2718 | |
---|
2719 | if (DECL_DEFER_OUTPUT (decl) |
---|
2720 | || ((specd || DECL_INLINE (decl)) |
---|
2721 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) |
---|
2722 | && ! flag_keep_inline_functions) |
---|
2723 | || DECL_EXTERNAL (decl)))) |
---|
2724 | { |
---|
2725 | DECL_DEFER_OUTPUT (decl) = 1; |
---|
2726 | |
---|
2727 | /* If -Wreturn-type, we have to do a bit of compilation. */ |
---|
2728 | if (! warn_return_type) |
---|
2729 | { |
---|
2730 | #ifdef DWARF_DEBUGGING_INFO |
---|
2731 | /* Generate the DWARF info for the "abstract" instance |
---|
2732 | of a function which we may later generate inlined and/or |
---|
2733 | out-of-line instances of. */ |
---|
2734 | if (write_symbols == DWARF_DEBUG) |
---|
2735 | { |
---|
2736 | set_decl_abstract_flags (decl, 1); |
---|
2737 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); |
---|
2738 | set_decl_abstract_flags (decl, 0); |
---|
2739 | } |
---|
2740 | #endif |
---|
2741 | TIMEVAR (integration_time, save_for_inline_nocopy (decl)); |
---|
2742 | goto exit_rest_of_compilation; |
---|
2743 | } |
---|
2744 | } |
---|
2745 | |
---|
2746 | /* If we have to compile the function now, save its rtl and subdecls |
---|
2747 | so that its compilation will not affect what others get. */ |
---|
2748 | if (DECL_INLINE (decl) || DECL_DEFER_OUTPUT (decl)) |
---|
2749 | { |
---|
2750 | #ifdef DWARF_DEBUGGING_INFO |
---|
2751 | /* Generate the DWARF info for the "abstract" instance of |
---|
2752 | a function which we will generate an out-of-line instance |
---|
2753 | of almost immediately (and which we may also later generate |
---|
2754 | various inlined instances of). */ |
---|
2755 | if (write_symbols == DWARF_DEBUG) |
---|
2756 | { |
---|
2757 | set_decl_abstract_flags (decl, 1); |
---|
2758 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); |
---|
2759 | set_decl_abstract_flags (decl, 0); |
---|
2760 | } |
---|
2761 | #endif |
---|
2762 | saved_block_tree = DECL_INITIAL (decl); |
---|
2763 | saved_arguments = DECL_ARGUMENTS (decl); |
---|
2764 | TIMEVAR (integration_time, save_for_inline_copying (decl)); |
---|
2765 | } |
---|
2766 | |
---|
2767 | /* If specified extern inline but we aren't inlining it, we are |
---|
2768 | done. */ |
---|
2769 | if (specd && DECL_EXTERNAL (decl)) |
---|
2770 | goto exit_rest_of_compilation; |
---|
2771 | } |
---|
2772 | |
---|
2773 | if (! DECL_DEFER_OUTPUT (decl)) |
---|
2774 | TREE_ASM_WRITTEN (decl) = 1; |
---|
2775 | |
---|
2776 | /* Now that integrate will no longer see our rtl, we need not distinguish |
---|
2777 | between the return value of this function and the return value of called |
---|
2778 | functions. */ |
---|
2779 | rtx_equal_function_value_matters = 0; |
---|
2780 | |
---|
2781 | /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */ |
---|
2782 | if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) |
---|
2783 | { |
---|
2784 | goto exit_rest_of_compilation; |
---|
2785 | } |
---|
2786 | |
---|
2787 | /* From now on, allocate rtl in current_obstack, not in saveable_obstack. |
---|
2788 | Note that that may have been done above, in save_for_inline_copying. |
---|
2789 | The call to resume_temporary_allocation near the end of this function |
---|
2790 | goes back to the usual state of affairs. */ |
---|
2791 | |
---|
2792 | rtl_in_current_obstack (); |
---|
2793 | |
---|
2794 | #ifdef FINALIZE_PIC |
---|
2795 | /* If we are doing position-independent code generation, now |
---|
2796 | is the time to output special prologues and epilogues. |
---|
2797 | We do not want to do this earlier, because it just clutters |
---|
2798 | up inline functions with meaningless insns. */ |
---|
2799 | if (flag_pic) |
---|
2800 | FINALIZE_PIC; |
---|
2801 | #endif |
---|
2802 | |
---|
2803 | insns = get_insns (); |
---|
2804 | |
---|
2805 | /* Copy any shared structure that should not be shared. */ |
---|
2806 | |
---|
2807 | unshare_all_rtl (insns); |
---|
2808 | |
---|
2809 | /* Instantiate all virtual registers. */ |
---|
2810 | |
---|
2811 | instantiate_virtual_regs (current_function_decl, get_insns ()); |
---|
2812 | |
---|
2813 | /* See if we have allocated stack slots that are not directly addressable. |
---|
2814 | If so, scan all the insns and create explicit address computation |
---|
2815 | for all references to such slots. */ |
---|
2816 | /* fixup_stack_slots (); */ |
---|
2817 | |
---|
2818 | /* Do jump optimization the first time, if -opt. |
---|
2819 | Also do it if -W, but in that case it doesn't change the rtl code, |
---|
2820 | it only computes whether control can drop off the end of the function. */ |
---|
2821 | |
---|
2822 | if (optimize > 0 || extra_warnings || warn_return_type |
---|
2823 | /* If function is `noreturn', we should warn if it tries to return. */ |
---|
2824 | || TREE_THIS_VOLATILE (decl)) |
---|
2825 | { |
---|
2826 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); |
---|
2827 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1)); |
---|
2828 | } |
---|
2829 | |
---|
2830 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ |
---|
2831 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) |
---|
2832 | goto exit_rest_of_compilation; |
---|
2833 | |
---|
2834 | /* Dump rtl code after jump, if we are doing that. */ |
---|
2835 | |
---|
2836 | if (jump_opt_dump) |
---|
2837 | TIMEVAR (dump_time, |
---|
2838 | { |
---|
2839 | fprintf (jump_opt_dump_file, "\n;; Function %s\n\n", |
---|
2840 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
2841 | print_rtl (jump_opt_dump_file, insns); |
---|
2842 | fflush (jump_opt_dump_file); |
---|
2843 | }); |
---|
2844 | |
---|
2845 | /* Perform common subexpression elimination. |
---|
2846 | Nonzero value from `cse_main' means that jumps were simplified |
---|
2847 | and some code may now be unreachable, so do |
---|
2848 | jump optimization again. */ |
---|
2849 | |
---|
2850 | if (cse_dump) |
---|
2851 | TIMEVAR (dump_time, |
---|
2852 | { |
---|
2853 | fprintf (cse_dump_file, "\n;; Function %s\n\n", |
---|
2854 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
2855 | }); |
---|
2856 | |
---|
2857 | if (optimize > 0) |
---|
2858 | { |
---|
2859 | TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1)); |
---|
2860 | |
---|
2861 | if (flag_thread_jumps) |
---|
2862 | /* Hacks by tiemann & kenner. */ |
---|
2863 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1)); |
---|
2864 | |
---|
2865 | TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (), |
---|
2866 | 0, cse_dump_file)); |
---|
2867 | TIMEVAR (cse_time, delete_dead_from_cse (insns, max_reg_num ())); |
---|
2868 | |
---|
2869 | if (tem || optimize > 1) |
---|
2870 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0)); |
---|
2871 | } |
---|
2872 | |
---|
2873 | /* Dump rtl code after cse, if we are doing that. */ |
---|
2874 | |
---|
2875 | if (cse_dump) |
---|
2876 | TIMEVAR (dump_time, |
---|
2877 | { |
---|
2878 | print_rtl (cse_dump_file, insns); |
---|
2879 | fflush (cse_dump_file); |
---|
2880 | }); |
---|
2881 | |
---|
2882 | if (loop_dump) |
---|
2883 | TIMEVAR (dump_time, |
---|
2884 | { |
---|
2885 | fprintf (loop_dump_file, "\n;; Function %s\n\n", |
---|
2886 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
2887 | }); |
---|
2888 | |
---|
2889 | /* Move constant computations out of loops. */ |
---|
2890 | |
---|
2891 | if (optimize > 0) |
---|
2892 | { |
---|
2893 | TIMEVAR (loop_time, |
---|
2894 | { |
---|
2895 | loop_optimize (insns, loop_dump_file); |
---|
2896 | }); |
---|
2897 | } |
---|
2898 | |
---|
2899 | /* Dump rtl code after loop opt, if we are doing that. */ |
---|
2900 | |
---|
2901 | if (loop_dump) |
---|
2902 | TIMEVAR (dump_time, |
---|
2903 | { |
---|
2904 | print_rtl (loop_dump_file, insns); |
---|
2905 | fflush (loop_dump_file); |
---|
2906 | }); |
---|
2907 | |
---|
2908 | if (cse2_dump) |
---|
2909 | TIMEVAR (dump_time, |
---|
2910 | { |
---|
2911 | fprintf (cse2_dump_file, "\n;; Function %s\n\n", |
---|
2912 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
2913 | }); |
---|
2914 | |
---|
2915 | if (optimize > 0 && flag_rerun_cse_after_loop) |
---|
2916 | { |
---|
2917 | /* Running another jump optimization pass before the second |
---|
2918 | cse pass sometimes simplifies the RTL enough to allow |
---|
2919 | the second CSE pass to do a better job. Jump_optimize can change |
---|
2920 | max_reg_num so we must rerun reg_scan afterwards. |
---|
2921 | ??? Rework to not call reg_scan so often. */ |
---|
2922 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); |
---|
2923 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1)); |
---|
2924 | |
---|
2925 | TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0)); |
---|
2926 | TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (), |
---|
2927 | 1, cse2_dump_file)); |
---|
2928 | if (tem) |
---|
2929 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0)); |
---|
2930 | } |
---|
2931 | |
---|
2932 | if (optimize > 0 && flag_thread_jumps) |
---|
2933 | /* This pass of jump threading straightens out code |
---|
2934 | that was kinked by loop optimization. */ |
---|
2935 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0)); |
---|
2936 | |
---|
2937 | /* Dump rtl code after cse, if we are doing that. */ |
---|
2938 | |
---|
2939 | if (cse2_dump) |
---|
2940 | TIMEVAR (dump_time, |
---|
2941 | { |
---|
2942 | print_rtl (cse2_dump_file, insns); |
---|
2943 | fflush (cse2_dump_file); |
---|
2944 | }); |
---|
2945 | |
---|
2946 | /* We are no longer anticipating cse in this function, at least. */ |
---|
2947 | |
---|
2948 | cse_not_expected = 1; |
---|
2949 | |
---|
2950 | /* Now we choose between stupid (pcc-like) register allocation |
---|
2951 | (if we got the -noreg switch and not -opt) |
---|
2952 | and smart register allocation. */ |
---|
2953 | |
---|
2954 | if (optimize > 0) /* Stupid allocation probably won't work */ |
---|
2955 | obey_regdecls = 0; /* if optimizations being done. */ |
---|
2956 | |
---|
2957 | regclass_init (); |
---|
2958 | |
---|
2959 | /* Print function header into flow dump now |
---|
2960 | because doing the flow analysis makes some of the dump. */ |
---|
2961 | |
---|
2962 | if (flow_dump) |
---|
2963 | TIMEVAR (dump_time, |
---|
2964 | { |
---|
2965 | fprintf (flow_dump_file, "\n;; Function %s\n\n", |
---|
2966 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
2967 | }); |
---|
2968 | |
---|
2969 | if (obey_regdecls) |
---|
2970 | { |
---|
2971 | TIMEVAR (flow_time, |
---|
2972 | { |
---|
2973 | regclass (insns, max_reg_num ()); |
---|
2974 | stupid_life_analysis (insns, max_reg_num (), |
---|
2975 | flow_dump_file); |
---|
2976 | }); |
---|
2977 | } |
---|
2978 | else |
---|
2979 | { |
---|
2980 | /* Do control and data flow analysis, |
---|
2981 | and write some of the results to dump file. */ |
---|
2982 | |
---|
2983 | TIMEVAR (flow_time, flow_analysis (insns, max_reg_num (), |
---|
2984 | flow_dump_file)); |
---|
2985 | if (warn_uninitialized) |
---|
2986 | { |
---|
2987 | uninitialized_vars_warning (DECL_INITIAL (decl)); |
---|
2988 | setjmp_args_warning (); |
---|
2989 | } |
---|
2990 | } |
---|
2991 | |
---|
2992 | /* Dump rtl after flow analysis. */ |
---|
2993 | |
---|
2994 | if (flow_dump) |
---|
2995 | TIMEVAR (dump_time, |
---|
2996 | { |
---|
2997 | print_rtl (flow_dump_file, insns); |
---|
2998 | fflush (flow_dump_file); |
---|
2999 | }); |
---|
3000 | |
---|
3001 | /* If -opt, try combining insns through substitution. */ |
---|
3002 | |
---|
3003 | if (optimize > 0) |
---|
3004 | TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ())); |
---|
3005 | |
---|
3006 | /* Dump rtl code after insn combination. */ |
---|
3007 | |
---|
3008 | if (combine_dump) |
---|
3009 | TIMEVAR (dump_time, |
---|
3010 | { |
---|
3011 | fprintf (combine_dump_file, "\n;; Function %s\n\n", |
---|
3012 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
3013 | dump_combine_stats (combine_dump_file); |
---|
3014 | print_rtl (combine_dump_file, insns); |
---|
3015 | fflush (combine_dump_file); |
---|
3016 | }); |
---|
3017 | |
---|
3018 | /* Print function header into sched dump now |
---|
3019 | because doing the sched analysis makes some of the dump. */ |
---|
3020 | |
---|
3021 | if (sched_dump) |
---|
3022 | TIMEVAR (dump_time, |
---|
3023 | { |
---|
3024 | fprintf (sched_dump_file, "\n;; Function %s\n\n", |
---|
3025 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
3026 | }); |
---|
3027 | |
---|
3028 | if (optimize > 0 && flag_schedule_insns) |
---|
3029 | { |
---|
3030 | /* Do control and data sched analysis, |
---|
3031 | and write some of the results to dump file. */ |
---|
3032 | |
---|
3033 | TIMEVAR (sched_time, schedule_insns (sched_dump_file)); |
---|
3034 | } |
---|
3035 | |
---|
3036 | /* Dump rtl after instruction scheduling. */ |
---|
3037 | |
---|
3038 | if (sched_dump) |
---|
3039 | TIMEVAR (dump_time, |
---|
3040 | { |
---|
3041 | print_rtl (sched_dump_file, insns); |
---|
3042 | fflush (sched_dump_file); |
---|
3043 | }); |
---|
3044 | |
---|
3045 | /* Unless we did stupid register allocation, |
---|
3046 | allocate pseudo-regs that are used only within 1 basic block. */ |
---|
3047 | |
---|
3048 | if (!obey_regdecls) |
---|
3049 | TIMEVAR (local_alloc_time, |
---|
3050 | { |
---|
3051 | regclass (insns, max_reg_num ()); |
---|
3052 | local_alloc (); |
---|
3053 | }); |
---|
3054 | |
---|
3055 | /* Dump rtl code after allocating regs within basic blocks. */ |
---|
3056 | |
---|
3057 | if (local_reg_dump) |
---|
3058 | TIMEVAR (dump_time, |
---|
3059 | { |
---|
3060 | fprintf (local_reg_dump_file, "\n;; Function %s\n\n", |
---|
3061 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
3062 | dump_flow_info (local_reg_dump_file); |
---|
3063 | dump_local_alloc (local_reg_dump_file); |
---|
3064 | print_rtl (local_reg_dump_file, insns); |
---|
3065 | fflush (local_reg_dump_file); |
---|
3066 | }); |
---|
3067 | |
---|
3068 | if (global_reg_dump) |
---|
3069 | TIMEVAR (dump_time, |
---|
3070 | fprintf (global_reg_dump_file, "\n;; Function %s\n\n", |
---|
3071 | IDENTIFIER_POINTER (DECL_NAME (decl)))); |
---|
3072 | |
---|
3073 | /* Unless we did stupid register allocation, |
---|
3074 | allocate remaining pseudo-regs, then do the reload pass |
---|
3075 | fixing up any insns that are invalid. */ |
---|
3076 | |
---|
3077 | TIMEVAR (global_alloc_time, |
---|
3078 | { |
---|
3079 | if (!obey_regdecls) |
---|
3080 | failure = global_alloc (global_reg_dump_file); |
---|
3081 | else |
---|
3082 | failure = reload (insns, 0, global_reg_dump_file); |
---|
3083 | }); |
---|
3084 | |
---|
3085 | if (global_reg_dump) |
---|
3086 | TIMEVAR (dump_time, |
---|
3087 | { |
---|
3088 | dump_global_regs (global_reg_dump_file); |
---|
3089 | print_rtl (global_reg_dump_file, insns); |
---|
3090 | fflush (global_reg_dump_file); |
---|
3091 | }); |
---|
3092 | |
---|
3093 | if (failure) |
---|
3094 | goto exit_rest_of_compilation; |
---|
3095 | |
---|
3096 | reload_completed = 1; |
---|
3097 | |
---|
3098 | /* On some machines, the prologue and epilogue code, or parts thereof, |
---|
3099 | can be represented as RTL. Doing so lets us schedule insns between |
---|
3100 | it and the rest of the code and also allows delayed branch |
---|
3101 | scheduling to operate in the epilogue. */ |
---|
3102 | |
---|
3103 | thread_prologue_and_epilogue_insns (insns); |
---|
3104 | |
---|
3105 | if (optimize > 0 && flag_schedule_insns_after_reload) |
---|
3106 | { |
---|
3107 | if (sched2_dump) |
---|
3108 | TIMEVAR (dump_time, |
---|
3109 | { |
---|
3110 | fprintf (sched2_dump_file, "\n;; Function %s\n\n", |
---|
3111 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
3112 | }); |
---|
3113 | |
---|
3114 | /* Do control and data sched analysis again, |
---|
3115 | and write some more of the results to dump file. */ |
---|
3116 | |
---|
3117 | TIMEVAR (sched2_time, schedule_insns (sched2_dump_file)); |
---|
3118 | |
---|
3119 | /* Dump rtl after post-reorder instruction scheduling. */ |
---|
3120 | |
---|
3121 | if (sched2_dump) |
---|
3122 | TIMEVAR (dump_time, |
---|
3123 | { |
---|
3124 | print_rtl (sched2_dump_file, insns); |
---|
3125 | fflush (sched2_dump_file); |
---|
3126 | }); |
---|
3127 | } |
---|
3128 | |
---|
3129 | #ifdef LEAF_REGISTERS |
---|
3130 | leaf_function = 0; |
---|
3131 | if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ()) |
---|
3132 | leaf_function = 1; |
---|
3133 | #endif |
---|
3134 | |
---|
3135 | /* One more attempt to remove jumps to .+1 |
---|
3136 | left by dead-store-elimination. |
---|
3137 | Also do cross-jumping this time |
---|
3138 | and delete no-op move insns. */ |
---|
3139 | |
---|
3140 | if (optimize > 0) |
---|
3141 | { |
---|
3142 | TIMEVAR (jump_time, jump_optimize (insns, 1, 1, 0)); |
---|
3143 | } |
---|
3144 | |
---|
3145 | /* Dump rtl code after jump, if we are doing that. */ |
---|
3146 | |
---|
3147 | if (jump2_opt_dump) |
---|
3148 | TIMEVAR (dump_time, |
---|
3149 | { |
---|
3150 | fprintf (jump2_opt_dump_file, "\n;; Function %s\n\n", |
---|
3151 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
3152 | print_rtl (jump2_opt_dump_file, insns); |
---|
3153 | fflush (jump2_opt_dump_file); |
---|
3154 | }); |
---|
3155 | |
---|
3156 | /* If a machine dependent reorganization is needed, call it. */ |
---|
3157 | #ifdef MACHINE_DEPENDENT_REORG |
---|
3158 | MACHINE_DEPENDENT_REORG (insns); |
---|
3159 | #endif |
---|
3160 | |
---|
3161 | /* If a scheduling pass for delayed branches is to be done, |
---|
3162 | call the scheduling code. */ |
---|
3163 | |
---|
3164 | #ifdef DELAY_SLOTS |
---|
3165 | if (optimize > 0 && flag_delayed_branch) |
---|
3166 | { |
---|
3167 | TIMEVAR (dbr_sched_time, dbr_schedule (insns, dbr_sched_dump_file)); |
---|
3168 | if (dbr_sched_dump) |
---|
3169 | { |
---|
3170 | TIMEVAR (dump_time, |
---|
3171 | { |
---|
3172 | fprintf (dbr_sched_dump_file, "\n;; Function %s\n\n", |
---|
3173 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
3174 | print_rtl (dbr_sched_dump_file, insns); |
---|
3175 | fflush (dbr_sched_dump_file); |
---|
3176 | }); |
---|
3177 | } |
---|
3178 | } |
---|
3179 | #endif |
---|
3180 | |
---|
3181 | /* Shorten branches. */ |
---|
3182 | TIMEVAR (shorten_branch_time, |
---|
3183 | { |
---|
3184 | shorten_branches (get_insns ()); |
---|
3185 | }); |
---|
3186 | |
---|
3187 | #ifdef STACK_REGS |
---|
3188 | TIMEVAR (stack_reg_time, reg_to_stack (insns, stack_reg_dump_file)); |
---|
3189 | if (stack_reg_dump) |
---|
3190 | { |
---|
3191 | TIMEVAR (dump_time, |
---|
3192 | { |
---|
3193 | fprintf (stack_reg_dump_file, "\n;; Function %s\n\n", |
---|
3194 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
3195 | print_rtl (stack_reg_dump_file, insns); |
---|
3196 | fflush (stack_reg_dump_file); |
---|
3197 | }); |
---|
3198 | } |
---|
3199 | #endif |
---|
3200 | |
---|
3201 | /* Now turn the rtl into assembler code. */ |
---|
3202 | |
---|
3203 | TIMEVAR (final_time, |
---|
3204 | { |
---|
3205 | rtx x; |
---|
3206 | char *fnname; |
---|
3207 | |
---|
3208 | /* Get the function's name, as described by its RTL. |
---|
3209 | This may be different from the DECL_NAME name used |
---|
3210 | in the source file. */ |
---|
3211 | |
---|
3212 | x = DECL_RTL (decl); |
---|
3213 | if (GET_CODE (x) != MEM) |
---|
3214 | abort (); |
---|
3215 | x = XEXP (x, 0); |
---|
3216 | if (GET_CODE (x) != SYMBOL_REF) |
---|
3217 | abort (); |
---|
3218 | fnname = XSTR (x, 0); |
---|
3219 | |
---|
3220 | assemble_start_function (decl, fnname); |
---|
3221 | final_start_function (insns, asm_out_file, optimize); |
---|
3222 | final (insns, asm_out_file, optimize, 0); |
---|
3223 | final_end_function (insns, asm_out_file, optimize); |
---|
3224 | assemble_end_function (decl, fnname); |
---|
3225 | fflush (asm_out_file); |
---|
3226 | }); |
---|
3227 | |
---|
3228 | /* Write DBX symbols if requested */ |
---|
3229 | |
---|
3230 | /* Note that for those inline functions where we don't initially |
---|
3231 | know for certain that we will be generating an out-of-line copy, |
---|
3232 | the first invocation of this routine (rest_of_compilation) will |
---|
3233 | skip over this code by doing a `goto exit_rest_of_compilation;'. |
---|
3234 | Later on, finish_compilation will call rest_of_compilation again |
---|
3235 | for those inline functions that need to have out-of-line copies |
---|
3236 | generated. During that call, we *will* be routed past here. */ |
---|
3237 | |
---|
3238 | #ifdef DBX_DEBUGGING_INFO |
---|
3239 | if (write_symbols == DBX_DEBUG) |
---|
3240 | TIMEVAR (symout_time, dbxout_function (decl)); |
---|
3241 | #endif |
---|
3242 | |
---|
3243 | #ifdef DWARF_DEBUGGING_INFO |
---|
3244 | if (write_symbols == DWARF_DEBUG) |
---|
3245 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); |
---|
3246 | #endif |
---|
3247 | |
---|
3248 | exit_rest_of_compilation: |
---|
3249 | |
---|
3250 | /* In case the function was not output, |
---|
3251 | don't leave any temporary anonymous types |
---|
3252 | queued up for sdb output. */ |
---|
3253 | #ifdef SDB_DEBUGGING_INFO |
---|
3254 | if (write_symbols == SDB_DEBUG) |
---|
3255 | sdbout_types (NULL_TREE); |
---|
3256 | #endif |
---|
3257 | |
---|
3258 | /* Put back the tree of subblocks and list of arguments |
---|
3259 | from before we copied them. |
---|
3260 | Code generation and the output of debugging info may have modified |
---|
3261 | the copy, but the original is unchanged. */ |
---|
3262 | |
---|
3263 | if (saved_block_tree != 0) |
---|
3264 | DECL_INITIAL (decl) = saved_block_tree; |
---|
3265 | if (saved_arguments != 0) |
---|
3266 | DECL_ARGUMENTS (decl) = saved_arguments; |
---|
3267 | |
---|
3268 | reload_completed = 0; |
---|
3269 | |
---|
3270 | /* Clear out the insn_length contents now that they are no longer valid. */ |
---|
3271 | init_insn_lengths (); |
---|
3272 | |
---|
3273 | /* Clear out the real_constant_chain before some of the rtx's |
---|
3274 | it runs through become garbage. */ |
---|
3275 | |
---|
3276 | clear_const_double_mem (); |
---|
3277 | |
---|
3278 | /* Cancel the effect of rtl_in_current_obstack. */ |
---|
3279 | |
---|
3280 | resume_temporary_allocation (); |
---|
3281 | |
---|
3282 | /* The parsing time is all the time spent in yyparse |
---|
3283 | *except* what is spent in this function. */ |
---|
3284 | |
---|
3285 | parse_time -= get_run_time () - start_time; |
---|
3286 | } |
---|
3287 | |
---|
3288 | /* Entry point of cc1/c++. Decode command args, then call compile_file. |
---|
3289 | Exit code is 35 if can't open files, 34 if fatal error, |
---|
3290 | 33 if had nonfatal errors, else success. */ |
---|
3291 | |
---|
3292 | int |
---|
3293 | main (argc, argv, envp) |
---|
3294 | int argc; |
---|
3295 | char **argv; |
---|
3296 | char **envp; |
---|
3297 | { |
---|
3298 | register int i; |
---|
3299 | char *filename = 0; |
---|
3300 | int flag_print_mem = 0; |
---|
3301 | int version_flag = 0; |
---|
3302 | char *p; |
---|
3303 | |
---|
3304 | /* save in case md file wants to emit args as a comment. */ |
---|
3305 | save_argc = argc; |
---|
3306 | save_argv = argv; |
---|
3307 | |
---|
3308 | p = argv[0] + strlen (argv[0]); |
---|
3309 | while (p != argv[0] && p[-1] != '/' |
---|
3310 | #ifdef DIR_SEPARATOR |
---|
3311 | && p[-1] != DIR_SEPARATOR |
---|
3312 | #endif |
---|
3313 | ) |
---|
3314 | --p; |
---|
3315 | progname = p; |
---|
3316 | |
---|
3317 | #ifdef RLIMIT_STACK |
---|
3318 | /* Get rid of any avoidable limit on stack size. */ |
---|
3319 | { |
---|
3320 | struct rlimit rlim; |
---|
3321 | |
---|
3322 | /* Set the stack limit huge so that alloca does not fail. */ |
---|
3323 | getrlimit (RLIMIT_STACK, &rlim); |
---|
3324 | rlim.rlim_cur = rlim.rlim_max; |
---|
3325 | setrlimit (RLIMIT_STACK, &rlim); |
---|
3326 | } |
---|
3327 | #endif /* RLIMIT_STACK */ |
---|
3328 | |
---|
3329 | signal (SIGFPE, float_signal); |
---|
3330 | |
---|
3331 | #ifdef SIGPIPE |
---|
3332 | signal (SIGPIPE, pipe_closed); |
---|
3333 | #endif |
---|
3334 | |
---|
3335 | decl_printable_name = decl_name; |
---|
3336 | lang_expand_expr = (struct rtx_def *(*)()) do_abort; |
---|
3337 | interim_eh_hook = interim_eh; |
---|
3338 | |
---|
3339 | /* Initialize whether `char' is signed. */ |
---|
3340 | flag_signed_char = DEFAULT_SIGNED_CHAR; |
---|
3341 | #ifdef DEFAULT_SHORT_ENUMS |
---|
3342 | /* Initialize how much space enums occupy, by default. */ |
---|
3343 | flag_short_enums = DEFAULT_SHORT_ENUMS; |
---|
3344 | #endif |
---|
3345 | |
---|
3346 | /* Scan to see what optimization level has been specified. That will |
---|
3347 | determine the default value of many flags. */ |
---|
3348 | for (i = 1; i < argc; i++) |
---|
3349 | { |
---|
3350 | if (!strcmp (argv[i], "-O")) |
---|
3351 | { |
---|
3352 | optimize = 1; |
---|
3353 | } |
---|
3354 | else if (argv[i][0] == '-' && argv[i][1] == 'O') |
---|
3355 | { |
---|
3356 | /* Handle -O2, -O3, -O69, ... */ |
---|
3357 | char *p = &argv[i][2]; |
---|
3358 | int c; |
---|
3359 | |
---|
3360 | while (c = *p++) |
---|
3361 | if (! (c >= '0' && c <= '9')) |
---|
3362 | break; |
---|
3363 | if (c == 0) |
---|
3364 | optimize = atoi (&argv[i][2]); |
---|
3365 | } |
---|
3366 | } |
---|
3367 | |
---|
3368 | obey_regdecls = (optimize == 0); |
---|
3369 | if (optimize == 0) |
---|
3370 | { |
---|
3371 | flag_no_inline = 1; |
---|
3372 | warn_inline = 0; |
---|
3373 | } |
---|
3374 | |
---|
3375 | if (optimize >= 1) |
---|
3376 | { |
---|
3377 | flag_defer_pop = 1; |
---|
3378 | flag_thread_jumps = 1; |
---|
3379 | #ifdef DELAY_SLOTS |
---|
3380 | flag_delayed_branch = 1; |
---|
3381 | #endif |
---|
3382 | #ifdef CAN_DEBUG_WITHOUT_FP |
---|
3383 | flag_omit_frame_pointer = 1; |
---|
3384 | #endif |
---|
3385 | } |
---|
3386 | |
---|
3387 | if (optimize >= 2) |
---|
3388 | { |
---|
3389 | flag_cse_follow_jumps = 1; |
---|
3390 | flag_cse_skip_blocks = 1; |
---|
3391 | flag_expensive_optimizations = 1; |
---|
3392 | flag_strength_reduce = 1; |
---|
3393 | flag_rerun_cse_after_loop = 1; |
---|
3394 | flag_caller_saves = 1; |
---|
3395 | flag_force_mem = 1; |
---|
3396 | #ifdef INSN_SCHEDULING |
---|
3397 | flag_schedule_insns = 1; |
---|
3398 | flag_schedule_insns_after_reload = 1; |
---|
3399 | #endif |
---|
3400 | } |
---|
3401 | |
---|
3402 | if (optimize >= 3) |
---|
3403 | { |
---|
3404 | flag_inline_functions = 1; |
---|
3405 | } |
---|
3406 | |
---|
3407 | #ifdef OPTIMIZATION_OPTIONS |
---|
3408 | /* Allow default optimizations to be specified on a per-machine basis. */ |
---|
3409 | OPTIMIZATION_OPTIONS (optimize); |
---|
3410 | #endif |
---|
3411 | |
---|
3412 | /* Initialize register usage now so switches may override. */ |
---|
3413 | init_reg_sets (); |
---|
3414 | |
---|
3415 | target_flags = 0; |
---|
3416 | set_target_switch (""); |
---|
3417 | |
---|
3418 | for (i = 1; i < argc; i++) |
---|
3419 | { |
---|
3420 | int j; |
---|
3421 | /* If this is a language-specific option, |
---|
3422 | decode it in a language-specific way. */ |
---|
3423 | for (j = 0; lang_options[j] != 0; j++) |
---|
3424 | if (!strncmp (argv[i], lang_options[j], |
---|
3425 | strlen (lang_options[j]))) |
---|
3426 | break; |
---|
3427 | if (lang_options[j] != 0) |
---|
3428 | /* If the option is valid for *some* language, |
---|
3429 | treat it as valid even if this language doesn't understand it. */ |
---|
3430 | lang_decode_option (argv[i]); |
---|
3431 | else if (argv[i][0] == '-' && argv[i][1] != 0) |
---|
3432 | { |
---|
3433 | register char *str = argv[i] + 1; |
---|
3434 | if (str[0] == 'Y') |
---|
3435 | str++; |
---|
3436 | |
---|
3437 | if (str[0] == 'm') |
---|
3438 | set_target_switch (&str[1]); |
---|
3439 | else if (!strcmp (str, "dumpbase")) |
---|
3440 | { |
---|
3441 | dump_base_name = argv[++i]; |
---|
3442 | } |
---|
3443 | else if (str[0] == 'd') |
---|
3444 | { |
---|
3445 | register char *p = &str[1]; |
---|
3446 | while (*p) |
---|
3447 | switch (*p++) |
---|
3448 | { |
---|
3449 | case 'a': |
---|
3450 | combine_dump = 1; |
---|
3451 | dbr_sched_dump = 1; |
---|
3452 | flow_dump = 1; |
---|
3453 | global_reg_dump = 1; |
---|
3454 | jump_opt_dump = 1; |
---|
3455 | jump2_opt_dump = 1; |
---|
3456 | local_reg_dump = 1; |
---|
3457 | loop_dump = 1; |
---|
3458 | rtl_dump = 1; |
---|
3459 | cse_dump = 1, cse2_dump = 1; |
---|
3460 | sched_dump = 1; |
---|
3461 | sched2_dump = 1; |
---|
3462 | stack_reg_dump = 1; |
---|
3463 | break; |
---|
3464 | case 'k': |
---|
3465 | stack_reg_dump = 1; |
---|
3466 | break; |
---|
3467 | case 'c': |
---|
3468 | combine_dump = 1; |
---|
3469 | break; |
---|
3470 | case 'd': |
---|
3471 | dbr_sched_dump = 1; |
---|
3472 | break; |
---|
3473 | case 'f': |
---|
3474 | flow_dump = 1; |
---|
3475 | break; |
---|
3476 | case 'g': |
---|
3477 | global_reg_dump = 1; |
---|
3478 | break; |
---|
3479 | case 'j': |
---|
3480 | jump_opt_dump = 1; |
---|
3481 | break; |
---|
3482 | case 'J': |
---|
3483 | jump2_opt_dump = 1; |
---|
3484 | break; |
---|
3485 | case 'l': |
---|
3486 | local_reg_dump = 1; |
---|
3487 | break; |
---|
3488 | case 'L': |
---|
3489 | loop_dump = 1; |
---|
3490 | break; |
---|
3491 | case 'm': |
---|
3492 | flag_print_mem = 1; |
---|
3493 | break; |
---|
3494 | case 'p': |
---|
3495 | flag_print_asm_name = 1; |
---|
3496 | break; |
---|
3497 | case 'r': |
---|
3498 | rtl_dump = 1; |
---|
3499 | break; |
---|
3500 | case 's': |
---|
3501 | cse_dump = 1; |
---|
3502 | break; |
---|
3503 | case 't': |
---|
3504 | cse2_dump = 1; |
---|
3505 | break; |
---|
3506 | case 'S': |
---|
3507 | sched_dump = 1; |
---|
3508 | break; |
---|
3509 | case 'R': |
---|
3510 | sched2_dump = 1; |
---|
3511 | break; |
---|
3512 | case 'y': |
---|
3513 | set_yydebug (1); |
---|
3514 | break; |
---|
3515 | |
---|
3516 | case 'x': |
---|
3517 | rtl_dump_and_exit = 1; |
---|
3518 | break; |
---|
3519 | } |
---|
3520 | } |
---|
3521 | else if (str[0] == 'f') |
---|
3522 | { |
---|
3523 | register char *p = &str[1]; |
---|
3524 | int found = 0; |
---|
3525 | |
---|
3526 | /* Some kind of -f option. |
---|
3527 | P's value is the option sans `-f'. |
---|
3528 | Search for it in the table of options. */ |
---|
3529 | |
---|
3530 | for (j = 0; |
---|
3531 | !found && j < sizeof (f_options) / sizeof (f_options[0]); |
---|
3532 | j++) |
---|
3533 | { |
---|
3534 | if (!strcmp (p, f_options[j].string)) |
---|
3535 | { |
---|
3536 | *f_options[j].variable = f_options[j].on_value; |
---|
3537 | /* A goto here would be cleaner, |
---|
3538 | but breaks the vax pcc. */ |
---|
3539 | found = 1; |
---|
3540 | } |
---|
3541 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' |
---|
3542 | && ! strcmp (p+3, f_options[j].string)) |
---|
3543 | { |
---|
3544 | *f_options[j].variable = ! f_options[j].on_value; |
---|
3545 | found = 1; |
---|
3546 | } |
---|
3547 | } |
---|
3548 | |
---|
3549 | if (found) |
---|
3550 | ; |
---|
3551 | else if (!strncmp (p, "fixed-", 6)) |
---|
3552 | fix_register (&p[6], 1, 1); |
---|
3553 | else if (!strncmp (p, "call-used-", 10)) |
---|
3554 | fix_register (&p[10], 0, 1); |
---|
3555 | else if (!strncmp (p, "call-saved-", 11)) |
---|
3556 | fix_register (&p[11], 0, 0); |
---|
3557 | else |
---|
3558 | error ("Invalid option `%s'", argv[i]); |
---|
3559 | } |
---|
3560 | else if (str[0] == 'O') |
---|
3561 | { |
---|
3562 | register char *p = str+1; |
---|
3563 | while (*p && *p >= '0' && *p <= '9') |
---|
3564 | p++; |
---|
3565 | if (*p == '\0') |
---|
3566 | ; |
---|
3567 | else |
---|
3568 | error ("Invalid option `%s'", argv[i]); |
---|
3569 | } |
---|
3570 | else if (!strcmp (str, "pedantic")) |
---|
3571 | pedantic = 1; |
---|
3572 | else if (!strcmp (str, "pedantic-errors")) |
---|
3573 | flag_pedantic_errors = pedantic = 1; |
---|
3574 | else if (!strcmp (str, "quiet")) |
---|
3575 | quiet_flag = 1; |
---|
3576 | else if (!strcmp (str, "version")) |
---|
3577 | version_flag = 1; |
---|
3578 | else if (!strcmp (str, "w")) |
---|
3579 | inhibit_warnings = 1; |
---|
3580 | else if (!strcmp (str, "W")) |
---|
3581 | { |
---|
3582 | extra_warnings = 1; |
---|
3583 | /* We save the value of warn_uninitialized, since if they put |
---|
3584 | -Wuninitialized on the command line, we need to generate a |
---|
3585 | warning about not using it without also specifying -O. */ |
---|
3586 | if (warn_uninitialized != 1) |
---|
3587 | warn_uninitialized = 2; |
---|
3588 | } |
---|
3589 | else if (str[0] == 'W') |
---|
3590 | { |
---|
3591 | register char *p = &str[1]; |
---|
3592 | int found = 0; |
---|
3593 | |
---|
3594 | /* Some kind of -W option. |
---|
3595 | P's value is the option sans `-W'. |
---|
3596 | Search for it in the table of options. */ |
---|
3597 | |
---|
3598 | for (j = 0; |
---|
3599 | !found && j < sizeof (W_options) / sizeof (W_options[0]); |
---|
3600 | j++) |
---|
3601 | { |
---|
3602 | if (!strcmp (p, W_options[j].string)) |
---|
3603 | { |
---|
3604 | *W_options[j].variable = W_options[j].on_value; |
---|
3605 | /* A goto here would be cleaner, |
---|
3606 | but breaks the vax pcc. */ |
---|
3607 | found = 1; |
---|
3608 | } |
---|
3609 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' |
---|
3610 | && ! strcmp (p+3, W_options[j].string)) |
---|
3611 | { |
---|
3612 | *W_options[j].variable = ! W_options[j].on_value; |
---|
3613 | found = 1; |
---|
3614 | } |
---|
3615 | } |
---|
3616 | |
---|
3617 | if (found) |
---|
3618 | ; |
---|
3619 | else if (!strncmp (p, "id-clash-", 9)) |
---|
3620 | { |
---|
3621 | char *endp = p + 9; |
---|
3622 | |
---|
3623 | while (*endp) |
---|
3624 | { |
---|
3625 | if (*endp >= '0' && *endp <= '9') |
---|
3626 | endp++; |
---|
3627 | else |
---|
3628 | { |
---|
3629 | error ("Invalid option `%s'", argv[i]); |
---|
3630 | goto id_clash_lose; |
---|
3631 | } |
---|
3632 | } |
---|
3633 | warn_id_clash = 1; |
---|
3634 | id_clash_len = atoi (str + 10); |
---|
3635 | id_clash_lose: ; |
---|
3636 | } |
---|
3637 | else if (!strncmp (p, "larger-than-", 12)) |
---|
3638 | { |
---|
3639 | char *endp = p + 12; |
---|
3640 | |
---|
3641 | while (*endp) |
---|
3642 | { |
---|
3643 | if (*endp >= '0' && *endp <= '9') |
---|
3644 | endp++; |
---|
3645 | else |
---|
3646 | { |
---|
3647 | error ("Invalid option `%s'", argv[i]); |
---|
3648 | goto larger_than_lose; |
---|
3649 | } |
---|
3650 | } |
---|
3651 | warn_larger_than = 1; |
---|
3652 | larger_than_size = atoi (str + 13); |
---|
3653 | larger_than_lose: ; |
---|
3654 | } |
---|
3655 | else |
---|
3656 | error ("Invalid option `%s'", argv[i]); |
---|
3657 | } |
---|
3658 | else if (!strcmp (str, "p")) |
---|
3659 | { |
---|
3660 | if (!output_bytecode) |
---|
3661 | profile_flag = 1; |
---|
3662 | else |
---|
3663 | error ("profiling not supported in bytecode compilation"); |
---|
3664 | } |
---|
3665 | else if (!strcmp (str, "a")) |
---|
3666 | { |
---|
3667 | #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) |
---|
3668 | warning ("`-a' option (basic block profile) not supported"); |
---|
3669 | #else |
---|
3670 | profile_block_flag = 1; |
---|
3671 | #endif |
---|
3672 | } |
---|
3673 | else if (str[0] == 'g') |
---|
3674 | { |
---|
3675 | char *p = str + 1; |
---|
3676 | char *q; |
---|
3677 | unsigned len; |
---|
3678 | unsigned level; |
---|
3679 | |
---|
3680 | while (*p && (*p < '0' || *p > '9')) |
---|
3681 | p++; |
---|
3682 | len = p - str; |
---|
3683 | q = p; |
---|
3684 | while (*q && (*q >= '0' && *q <= '9')) |
---|
3685 | q++; |
---|
3686 | if (*p) |
---|
3687 | level = atoi (p); |
---|
3688 | else |
---|
3689 | level = 2; /* default debugging info level */ |
---|
3690 | if (*q || level > 3) |
---|
3691 | { |
---|
3692 | warning ("invalid debug level specification in option: `-%s'", |
---|
3693 | str); |
---|
3694 | warning ("no debugging information will be generated"); |
---|
3695 | level = 0; |
---|
3696 | } |
---|
3697 | |
---|
3698 | /* If more than one debugging type is supported, |
---|
3699 | you must define PREFERRED_DEBUGGING_TYPE |
---|
3700 | to choose a format in a system-dependent way. */ |
---|
3701 | /* This is one long line cause VAXC can't handle a \-newline. */ |
---|
3702 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO)) |
---|
3703 | #ifdef PREFERRED_DEBUGGING_TYPE |
---|
3704 | if (!strncmp (str, "ggdb", len)) |
---|
3705 | write_symbols = PREFERRED_DEBUGGING_TYPE; |
---|
3706 | #else /* no PREFERRED_DEBUGGING_TYPE */ |
---|
3707 | You Lose! You must define PREFERRED_DEBUGGING_TYPE! |
---|
3708 | #endif /* no PREFERRED_DEBUGGING_TYPE */ |
---|
3709 | #endif /* More than one debugger format enabled. */ |
---|
3710 | #ifdef DBX_DEBUGGING_INFO |
---|
3711 | if (write_symbols != NO_DEBUG) |
---|
3712 | ; |
---|
3713 | else if (!strncmp (str, "ggdb", len)) |
---|
3714 | write_symbols = DBX_DEBUG; |
---|
3715 | else if (!strncmp (str, "gstabs", len)) |
---|
3716 | write_symbols = DBX_DEBUG; |
---|
3717 | else if (!strncmp (str, "gstabs+", len)) |
---|
3718 | write_symbols = DBX_DEBUG; |
---|
3719 | |
---|
3720 | /* Always enable extensions for -ggdb or -gstabs+, |
---|
3721 | always disable for -gstabs. |
---|
3722 | For plain -g, use system-specific default. */ |
---|
3723 | if (write_symbols == DBX_DEBUG && !strncmp (str, "ggdb", len) |
---|
3724 | && len >= 2) |
---|
3725 | use_gnu_debug_info_extensions = 1; |
---|
3726 | else if (write_symbols == DBX_DEBUG && !strncmp (str, "gstabs+", len) |
---|
3727 | && len >= 7) |
---|
3728 | use_gnu_debug_info_extensions = 1; |
---|
3729 | else if (write_symbols == DBX_DEBUG |
---|
3730 | && !strncmp (str, "gstabs", len) && len >= 2) |
---|
3731 | use_gnu_debug_info_extensions = 0; |
---|
3732 | else |
---|
3733 | use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS; |
---|
3734 | #endif /* DBX_DEBUGGING_INFO */ |
---|
3735 | #ifdef DWARF_DEBUGGING_INFO |
---|
3736 | if (write_symbols != NO_DEBUG) |
---|
3737 | ; |
---|
3738 | else if (!strncmp (str, "g", len)) |
---|
3739 | write_symbols = DWARF_DEBUG; |
---|
3740 | else if (!strncmp (str, "ggdb", len)) |
---|
3741 | write_symbols = DWARF_DEBUG; |
---|
3742 | else if (!strncmp (str, "gdwarf", len)) |
---|
3743 | write_symbols = DWARF_DEBUG; |
---|
3744 | |
---|
3745 | /* Always enable extensions for -ggdb or -gdwarf+, |
---|
3746 | always disable for -gdwarf. |
---|
3747 | For plain -g, use system-specific default. */ |
---|
3748 | if (write_symbols == DWARF_DEBUG && !strncmp (str, "ggdb", len) |
---|
3749 | && len >= 2) |
---|
3750 | use_gnu_debug_info_extensions = 1; |
---|
3751 | else if (write_symbols == DWARF_DEBUG && !strcmp (str, "gdwarf+")) |
---|
3752 | use_gnu_debug_info_extensions = 1; |
---|
3753 | else if (write_symbols == DWARF_DEBUG |
---|
3754 | && !strncmp (str, "gdwarf", len) && len >= 2) |
---|
3755 | use_gnu_debug_info_extensions = 0; |
---|
3756 | else |
---|
3757 | use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS; |
---|
3758 | #endif |
---|
3759 | #ifdef SDB_DEBUGGING_INFO |
---|
3760 | if (write_symbols != NO_DEBUG) |
---|
3761 | ; |
---|
3762 | else if (!strncmp (str, "g", len)) |
---|
3763 | write_symbols = SDB_DEBUG; |
---|
3764 | else if (!strncmp (str, "gdb", len)) |
---|
3765 | write_symbols = SDB_DEBUG; |
---|
3766 | else if (!strncmp (str, "gcoff", len)) |
---|
3767 | write_symbols = SDB_DEBUG; |
---|
3768 | #endif /* SDB_DEBUGGING_INFO */ |
---|
3769 | #ifdef XCOFF_DEBUGGING_INFO |
---|
3770 | if (write_symbols != NO_DEBUG) |
---|
3771 | ; |
---|
3772 | else if (!strncmp (str, "g", len)) |
---|
3773 | write_symbols = XCOFF_DEBUG; |
---|
3774 | else if (!strncmp (str, "ggdb", len)) |
---|
3775 | write_symbols = XCOFF_DEBUG; |
---|
3776 | else if (!strncmp (str, "gxcoff", len)) |
---|
3777 | write_symbols = XCOFF_DEBUG; |
---|
3778 | |
---|
3779 | /* Always enable extensions for -ggdb or -gxcoff+, |
---|
3780 | always disable for -gxcoff. |
---|
3781 | For plain -g, use system-specific default. */ |
---|
3782 | if (write_symbols == XCOFF_DEBUG && !strncmp (str, "ggdb", len) |
---|
3783 | && len >= 2) |
---|
3784 | use_gnu_debug_info_extensions = 1; |
---|
3785 | else if (write_symbols == XCOFF_DEBUG && !strcmp (str, "gxcoff+")) |
---|
3786 | use_gnu_debug_info_extensions = 1; |
---|
3787 | else if (write_symbols == XCOFF_DEBUG |
---|
3788 | && !strncmp (str, "gxcoff", len) && len >= 2) |
---|
3789 | use_gnu_debug_info_extensions = 0; |
---|
3790 | else |
---|
3791 | use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS; |
---|
3792 | #endif |
---|
3793 | if (write_symbols == NO_DEBUG) |
---|
3794 | warning ("`-%s' not supported by this configuration of GCC", |
---|
3795 | str); |
---|
3796 | else if (level == 0) |
---|
3797 | write_symbols = NO_DEBUG; |
---|
3798 | else |
---|
3799 | debug_info_level = (enum debug_info_level) level; |
---|
3800 | } |
---|
3801 | else if (!strcmp (str, "o")) |
---|
3802 | { |
---|
3803 | asm_file_name = argv[++i]; |
---|
3804 | } |
---|
3805 | else if (str[0] == 'G') |
---|
3806 | { |
---|
3807 | g_switch_set = TRUE; |
---|
3808 | g_switch_value = atoi ((str[1] != '\0') ? str+1 : argv[++i]); |
---|
3809 | } |
---|
3810 | else if (!strncmp (str, "aux-info", 8)) |
---|
3811 | { |
---|
3812 | flag_gen_aux_info = 1; |
---|
3813 | aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]); |
---|
3814 | } |
---|
3815 | else |
---|
3816 | error ("Invalid option `%s'", argv[i]); |
---|
3817 | } |
---|
3818 | else if (argv[i][0] == '+') |
---|
3819 | error ("Invalid option `%s'", argv[i]); |
---|
3820 | else |
---|
3821 | filename = argv[i]; |
---|
3822 | } |
---|
3823 | |
---|
3824 | /* Initialize for bytecode output. A good idea to do this as soon as |
---|
3825 | possible after the "-f" options have been parsed. */ |
---|
3826 | if (output_bytecode) |
---|
3827 | { |
---|
3828 | #ifndef TARGET_SUPPORTS_BYTECODE |
---|
3829 | /* Just die with a fatal error if not supported */ |
---|
3830 | fatal ("-fbytecode not supporter for this target"); |
---|
3831 | #else |
---|
3832 | bc_initialize (); |
---|
3833 | #endif |
---|
3834 | } |
---|
3835 | |
---|
3836 | if (optimize == 0) |
---|
3837 | { |
---|
3838 | /* Inlining does not work if not optimizing, |
---|
3839 | so force it not to be done. */ |
---|
3840 | flag_no_inline = 1; |
---|
3841 | warn_inline = 0; |
---|
3842 | |
---|
3843 | /* The c_decode_option and lang_decode_option functions set |
---|
3844 | this to `2' if -Wall is used, so we can avoid giving out |
---|
3845 | lots of errors for people who don't realize what -Wall does. */ |
---|
3846 | if (warn_uninitialized == 1) |
---|
3847 | warning ("-Wuninitialized is not supported without -O"); |
---|
3848 | } |
---|
3849 | |
---|
3850 | #if defined(DWARF_DEBUGGING_INFO) |
---|
3851 | if (write_symbols == DWARF_DEBUG |
---|
3852 | && strcmp (language_string, "GNU C++") == 0) |
---|
3853 | { |
---|
3854 | warning ("-g option not supported for C++ on systems using the DWARF debugging format"); |
---|
3855 | write_symbols = NO_DEBUG; |
---|
3856 | } |
---|
3857 | #endif /* defined(DWARF_DEBUGGING_INFO) */ |
---|
3858 | |
---|
3859 | #ifdef OVERRIDE_OPTIONS |
---|
3860 | /* Some machines may reject certain combinations of options. */ |
---|
3861 | OVERRIDE_OPTIONS; |
---|
3862 | #endif |
---|
3863 | |
---|
3864 | /* Unrolling all loops implies that standard loop unrolling must also |
---|
3865 | be done. */ |
---|
3866 | if (flag_unroll_all_loops) |
---|
3867 | flag_unroll_loops = 1; |
---|
3868 | /* Loop unrolling requires that strength_reduction be on also. Silently |
---|
3869 | turn on strength reduction here if it isn't already on. Also, the loop |
---|
3870 | unrolling code assumes that cse will be run after loop, so that must |
---|
3871 | be turned on also. */ |
---|
3872 | if (flag_unroll_loops) |
---|
3873 | { |
---|
3874 | flag_strength_reduce = 1; |
---|
3875 | flag_rerun_cse_after_loop = 1; |
---|
3876 | } |
---|
3877 | |
---|
3878 | /* Warn about options that are not supported on this machine. */ |
---|
3879 | #ifndef INSN_SCHEDULING |
---|
3880 | if (flag_schedule_insns || flag_schedule_insns_after_reload) |
---|
3881 | warning ("instruction scheduling not supported on this target machine"); |
---|
3882 | #endif |
---|
3883 | #ifndef DELAY_SLOTS |
---|
3884 | if (flag_delayed_branch) |
---|
3885 | warning ("this target machine does not have delayed branches"); |
---|
3886 | #endif |
---|
3887 | |
---|
3888 | /* If we are in verbose mode, write out the version and maybe all the |
---|
3889 | option flags in use. */ |
---|
3890 | if (version_flag) |
---|
3891 | { |
---|
3892 | fprintf (stderr, "%s version %s", language_string, version_string); |
---|
3893 | #ifdef TARGET_VERSION |
---|
3894 | TARGET_VERSION; |
---|
3895 | #endif |
---|
3896 | #ifdef __GNUC__ |
---|
3897 | #ifndef __VERSION__ |
---|
3898 | #define __VERSION__ "[unknown]" |
---|
3899 | #endif |
---|
3900 | fprintf (stderr, " compiled by GNU C version %s.\n", __VERSION__); |
---|
3901 | #else |
---|
3902 | fprintf (stderr, " compiled by CC.\n"); |
---|
3903 | #endif |
---|
3904 | if (! quiet_flag) |
---|
3905 | print_switch_values (); |
---|
3906 | } |
---|
3907 | |
---|
3908 | compile_file (filename); |
---|
3909 | |
---|
3910 | #if !defined(OS2) && !defined(VMS) && !defined(_WIN32) |
---|
3911 | if (flag_print_mem) |
---|
3912 | { |
---|
3913 | char *lim = (char *) sbrk (0); |
---|
3914 | |
---|
3915 | fprintf (stderr, "Data size %d.\n", |
---|
3916 | lim - (char *) &environ); |
---|
3917 | fflush (stderr); |
---|
3918 | |
---|
3919 | #ifdef USG |
---|
3920 | system ("ps -l 1>&2"); |
---|
3921 | #else /* not USG */ |
---|
3922 | system ("ps v"); |
---|
3923 | #endif /* not USG */ |
---|
3924 | } |
---|
3925 | #endif /* not OS2 and not VMS and not _WIN32 */ |
---|
3926 | |
---|
3927 | if (errorcount) |
---|
3928 | exit (FATAL_EXIT_CODE); |
---|
3929 | if (sorrycount) |
---|
3930 | exit (FATAL_EXIT_CODE); |
---|
3931 | exit (SUCCESS_EXIT_CODE); |
---|
3932 | return 0; |
---|
3933 | } |
---|
3934 | |
---|
3935 | /* Decode -m switches. */ |
---|
3936 | |
---|
3937 | /* Here is a table, controlled by the tm.h file, listing each -m switch |
---|
3938 | and which bits in `target_switches' it should set or clear. |
---|
3939 | If VALUE is positive, it is bits to set. |
---|
3940 | If VALUE is negative, -VALUE is bits to clear. |
---|
3941 | (The sign bit is not used so there is no confusion.) */ |
---|
3942 | |
---|
3943 | struct {char *name; int value;} target_switches [] |
---|
3944 | = TARGET_SWITCHES; |
---|
3945 | |
---|
3946 | /* This table is similar, but allows the switch to have a value. */ |
---|
3947 | |
---|
3948 | #ifdef TARGET_OPTIONS |
---|
3949 | struct {char *prefix; char ** variable;} target_options [] |
---|
3950 | = TARGET_OPTIONS; |
---|
3951 | #endif |
---|
3952 | |
---|
3953 | /* Decode the switch -mNAME. */ |
---|
3954 | |
---|
3955 | void |
---|
3956 | set_target_switch (name) |
---|
3957 | char *name; |
---|
3958 | { |
---|
3959 | register int j; |
---|
3960 | int valid = 0; |
---|
3961 | |
---|
3962 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) |
---|
3963 | if (!strcmp (target_switches[j].name, name)) |
---|
3964 | { |
---|
3965 | if (target_switches[j].value < 0) |
---|
3966 | target_flags &= ~-target_switches[j].value; |
---|
3967 | else |
---|
3968 | target_flags |= target_switches[j].value; |
---|
3969 | valid = 1; |
---|
3970 | } |
---|
3971 | |
---|
3972 | #ifdef TARGET_OPTIONS |
---|
3973 | if (!valid) |
---|
3974 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) |
---|
3975 | { |
---|
3976 | int len = strlen (target_options[j].prefix); |
---|
3977 | if (!strncmp (target_options[j].prefix, name, len)) |
---|
3978 | { |
---|
3979 | *target_options[j].variable = name + len; |
---|
3980 | valid = 1; |
---|
3981 | } |
---|
3982 | } |
---|
3983 | #endif |
---|
3984 | |
---|
3985 | if (!valid) |
---|
3986 | error ("Invalid option `%s'", name); |
---|
3987 | } |
---|
3988 | |
---|
3989 | /* Variable used for communication between the following two routines. */ |
---|
3990 | |
---|
3991 | static int line_position; |
---|
3992 | |
---|
3993 | /* Print an option value and adjust the position in the line. */ |
---|
3994 | |
---|
3995 | static void |
---|
3996 | print_single_switch (type, name) |
---|
3997 | char *type, *name; |
---|
3998 | { |
---|
3999 | fprintf (stderr, " %s%s", type, name); |
---|
4000 | |
---|
4001 | line_position += strlen (type) + strlen (name) + 1; |
---|
4002 | |
---|
4003 | if (line_position > 65) |
---|
4004 | { |
---|
4005 | fprintf (stderr, "\n\t"); |
---|
4006 | line_position = 8; |
---|
4007 | } |
---|
4008 | } |
---|
4009 | |
---|
4010 | /* Print default target switches for -version. */ |
---|
4011 | |
---|
4012 | static void |
---|
4013 | print_switch_values () |
---|
4014 | { |
---|
4015 | register int j; |
---|
4016 | |
---|
4017 | fprintf (stderr, "enabled:"); |
---|
4018 | line_position = 8; |
---|
4019 | |
---|
4020 | for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++) |
---|
4021 | if (*f_options[j].variable == f_options[j].on_value) |
---|
4022 | print_single_switch ("-f", f_options[j].string); |
---|
4023 | |
---|
4024 | for (j = 0; j < sizeof W_options / sizeof W_options[0]; j++) |
---|
4025 | if (*W_options[j].variable == W_options[j].on_value) |
---|
4026 | print_single_switch ("-W", W_options[j].string); |
---|
4027 | |
---|
4028 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) |
---|
4029 | if (target_switches[j].name[0] != '\0' |
---|
4030 | && target_switches[j].value > 0 |
---|
4031 | && ((target_switches[j].value & target_flags) |
---|
4032 | == target_switches[j].value)) |
---|
4033 | print_single_switch ("-m", target_switches[j].name); |
---|
4034 | |
---|
4035 | fprintf (stderr, "\n"); |
---|
4036 | } |
---|