[8833] | 1 | /* Print RTL for GNU C Compiler. |
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| 2 | Copyright (C) 1987, 1988, 1992 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 | |
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| 22 | #include "config.h" |
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| 23 | #include <ctype.h> |
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| 24 | #include <stdio.h> |
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| 25 | #include "rtl.h" |
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| 26 | |
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| 27 | |
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| 28 | /* How to print out a register name. |
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| 29 | We don't use PRINT_REG because some definitions of PRINT_REG |
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| 30 | don't work here. */ |
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| 31 | #ifndef DEBUG_PRINT_REG |
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| 32 | #define DEBUG_PRINT_REG(RTX, CODE, FILE) \ |
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| 33 | fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)]) |
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| 34 | #endif |
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| 35 | |
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| 36 | /* Array containing all of the register names */ |
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| 37 | |
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| 38 | #ifdef DEBUG_REGISTER_NAMES |
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| 39 | static char *reg_names[] = DEBUG_REGISTER_NAMES; |
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| 40 | #else |
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| 41 | static char *reg_names[] = REGISTER_NAMES; |
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| 42 | #endif |
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| 43 | |
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| 44 | static FILE *outfile; |
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| 45 | |
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| 46 | char spaces[] = " "; |
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| 47 | |
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| 48 | static int sawclose = 0; |
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| 49 | |
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| 50 | /* Names for patterns. Non-zero only when linked with insn-output.c. */ |
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| 51 | |
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| 52 | extern char **insn_name_ptr; |
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| 53 | |
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| 54 | /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */ |
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| 55 | |
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| 56 | static void |
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| 57 | print_rtx (in_rtx) |
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| 58 | register rtx in_rtx; |
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| 59 | { |
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| 60 | static int indent; |
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| 61 | register int i, j; |
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| 62 | register char *format_ptr; |
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| 63 | register int is_insn; |
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| 64 | |
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| 65 | if (sawclose) |
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| 66 | { |
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| 67 | fprintf (outfile, "\n%s", |
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| 68 | (spaces + (sizeof spaces - 1 - indent * 2))); |
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| 69 | sawclose = 0; |
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| 70 | } |
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| 71 | |
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| 72 | if (in_rtx == 0) |
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| 73 | { |
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| 74 | fprintf (outfile, "(nil)"); |
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| 75 | sawclose = 1; |
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| 76 | return; |
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| 77 | } |
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| 78 | |
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| 79 | /* print name of expression code */ |
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| 80 | fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx))); |
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| 81 | |
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| 82 | if (in_rtx->in_struct) |
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| 83 | fprintf (outfile, "/s"); |
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| 84 | |
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| 85 | if (in_rtx->volatil) |
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| 86 | fprintf (outfile, "/v"); |
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| 87 | |
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| 88 | if (in_rtx->unchanging) |
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| 89 | fprintf (outfile, "/u"); |
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| 90 | |
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| 91 | if (in_rtx->integrated) |
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| 92 | fprintf (outfile, "/i"); |
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| 93 | |
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| 94 | if (GET_MODE (in_rtx) != VOIDmode) |
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| 95 | { |
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| 96 | /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */ |
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| 97 | if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST) |
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| 98 | fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx))); |
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| 99 | else |
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| 100 | fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx))); |
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| 101 | } |
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| 102 | |
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| 103 | is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i'); |
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| 104 | format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)); |
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| 105 | |
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| 106 | for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++) |
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| 107 | switch (*format_ptr++) |
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| 108 | { |
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| 109 | case 'S': |
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| 110 | case 's': |
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| 111 | if (XSTR (in_rtx, i) == 0) |
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| 112 | fprintf (outfile, " \"\""); |
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| 113 | else |
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| 114 | fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i)); |
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| 115 | sawclose = 1; |
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| 116 | break; |
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| 117 | |
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| 118 | /* 0 indicates a field for internal use that should not be printed. */ |
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| 119 | case '0': |
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| 120 | break; |
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| 121 | |
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| 122 | case 'e': |
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| 123 | indent += 2; |
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| 124 | if (!sawclose) |
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| 125 | fprintf (outfile, " "); |
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| 126 | print_rtx (XEXP (in_rtx, i)); |
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| 127 | indent -= 2; |
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| 128 | break; |
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| 129 | |
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| 130 | case 'E': |
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| 131 | case 'V': |
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| 132 | indent += 2; |
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| 133 | if (sawclose) |
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| 134 | { |
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| 135 | fprintf (outfile, "\n%s", |
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| 136 | (spaces + (sizeof spaces - 1 - indent * 2))); |
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| 137 | sawclose = 0; |
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| 138 | } |
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| 139 | fprintf (outfile, "[ "); |
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| 140 | if (NULL != XVEC (in_rtx, i)) |
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| 141 | { |
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| 142 | indent += 2; |
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| 143 | if (XVECLEN (in_rtx, i)) |
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| 144 | sawclose = 1; |
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| 145 | |
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| 146 | for (j = 0; j < XVECLEN (in_rtx, i); j++) |
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| 147 | print_rtx (XVECEXP (in_rtx, i, j)); |
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| 148 | |
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| 149 | indent -= 2; |
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| 150 | } |
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| 151 | if (sawclose) |
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| 152 | fprintf (outfile, "\n%s", |
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| 153 | (spaces + (sizeof spaces - 1 - indent * 2))); |
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| 154 | |
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| 155 | fprintf (outfile, "] "); |
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| 156 | sawclose = 1; |
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| 157 | indent -= 2; |
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| 158 | break; |
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| 159 | |
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| 160 | case 'w': |
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| 161 | fprintf (outfile, |
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| 162 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT |
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| 163 | " %d", |
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| 164 | #else |
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| 165 | " %ld", |
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| 166 | #endif |
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| 167 | XWINT (in_rtx, i)); |
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| 168 | break; |
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| 169 | |
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| 170 | case 'i': |
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| 171 | { |
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| 172 | register int value = XINT (in_rtx, i); |
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| 173 | |
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| 174 | if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER) |
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| 175 | { |
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| 176 | fputc (' ', outfile); |
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| 177 | DEBUG_PRINT_REG (in_rtx, 0, outfile); |
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| 178 | } |
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| 179 | else |
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| 180 | fprintf (outfile, " %d", value); |
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| 181 | } |
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| 182 | if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i) |
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| 183 | && insn_name_ptr |
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| 184 | && XINT (in_rtx, i) >= 0) |
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| 185 | fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]); |
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| 186 | sawclose = 0; |
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| 187 | break; |
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| 188 | |
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| 189 | /* Print NOTE_INSN names rather than integer codes. */ |
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| 190 | |
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| 191 | case 'n': |
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| 192 | if (XINT (in_rtx, i) <= 0) |
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| 193 | fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i))); |
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| 194 | else |
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| 195 | fprintf (outfile, " %d", XINT (in_rtx, i)); |
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| 196 | sawclose = 0; |
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| 197 | break; |
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| 198 | |
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| 199 | case 'u': |
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| 200 | if (XEXP (in_rtx, i) != NULL) |
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| 201 | fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i))); |
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| 202 | else |
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| 203 | fprintf (outfile, " 0"); |
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| 204 | sawclose = 0; |
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| 205 | break; |
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| 206 | |
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| 207 | case '*': |
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| 208 | fprintf (outfile, " Unknown"); |
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| 209 | sawclose = 0; |
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| 210 | break; |
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| 211 | |
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| 212 | default: |
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| 213 | fprintf (stderr, |
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| 214 | "switch format wrong in rtl.print_rtx(). format was: %c.\n", |
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| 215 | format_ptr[-1]); |
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| 216 | abort (); |
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| 217 | } |
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| 218 | |
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| 219 | fprintf (outfile, ")"); |
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| 220 | sawclose = 1; |
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| 221 | } |
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| 222 | |
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| 223 | /* Call this function from the debugger to see what X looks like. */ |
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| 224 | |
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| 225 | void |
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| 226 | debug_rtx (x) |
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| 227 | rtx x; |
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| 228 | { |
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| 229 | outfile = stderr; |
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| 230 | print_rtx (x); |
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| 231 | fprintf (stderr, "\n"); |
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| 232 | } |
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| 233 | |
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| 234 | /* Count of rtx's to print with debug_rtx_list. |
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| 235 | This global exists because gdb user defined commands have no arguments. */ |
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| 236 | |
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| 237 | int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */ |
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| 238 | |
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| 239 | /* Call this function to print list from X on. |
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| 240 | |
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| 241 | N is a count of the rtx's to print. Positive values print from the specified |
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| 242 | rtx on. Negative values print a window around the rtx. |
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| 243 | EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */ |
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| 244 | |
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| 245 | void |
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| 246 | debug_rtx_list (x, n) |
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| 247 | rtx x; |
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| 248 | int n; |
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| 249 | { |
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| 250 | int i,count; |
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| 251 | rtx insn; |
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| 252 | |
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| 253 | count = n == 0 ? 1 : n < 0 ? -n : n; |
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| 254 | |
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| 255 | /* If we are printing a window, back up to the start. */ |
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| 256 | |
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| 257 | if (n < 0) |
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| 258 | for (i = count / 2; i > 0; i--) |
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| 259 | { |
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| 260 | if (PREV_INSN (x) == 0) |
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| 261 | break; |
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| 262 | x = PREV_INSN (x); |
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| 263 | } |
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| 264 | |
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| 265 | for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn)) |
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| 266 | debug_rtx (insn); |
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| 267 | } |
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| 268 | |
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| 269 | /* Call this function to search an rtx list to find one with insn uid UID, |
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| 270 | and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT. |
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| 271 | The found insn is returned to enable further debugging analysis. */ |
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| 272 | |
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| 273 | rtx |
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| 274 | debug_rtx_find(x, uid) |
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| 275 | rtx x; |
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| 276 | int uid; |
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| 277 | { |
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| 278 | while (x != 0 && INSN_UID (x) != uid) |
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| 279 | x = NEXT_INSN (x); |
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| 280 | if (x != 0) |
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| 281 | { |
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| 282 | debug_rtx_list (x, debug_rtx_count); |
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| 283 | return x; |
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| 284 | } |
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| 285 | else |
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| 286 | { |
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| 287 | fprintf (stderr, "insn uid %d not found\n", uid); |
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| 288 | return 0; |
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| 289 | } |
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| 290 | } |
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| 291 | |
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| 292 | /* External entry point for printing a chain of insns |
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| 293 | starting with RTX_FIRST onto file OUTF. |
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| 294 | A blank line separates insns. |
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| 295 | |
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| 296 | If RTX_FIRST is not an insn, then it alone is printed, with no newline. */ |
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| 297 | |
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| 298 | void |
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| 299 | print_rtl (outf, rtx_first) |
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| 300 | FILE *outf; |
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| 301 | rtx rtx_first; |
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| 302 | { |
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| 303 | register rtx tmp_rtx; |
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| 304 | |
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| 305 | outfile = outf; |
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| 306 | sawclose = 0; |
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| 307 | |
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| 308 | if (rtx_first == 0) |
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| 309 | fprintf (outf, "(nil)\n"); |
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| 310 | else |
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| 311 | switch (GET_CODE (rtx_first)) |
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| 312 | { |
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| 313 | case INSN: |
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| 314 | case JUMP_INSN: |
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| 315 | case CALL_INSN: |
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| 316 | case NOTE: |
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| 317 | case CODE_LABEL: |
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| 318 | case BARRIER: |
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| 319 | for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx)) |
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| 320 | { |
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| 321 | print_rtx (tmp_rtx); |
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| 322 | fprintf (outfile, "\n"); |
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| 323 | } |
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| 324 | break; |
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| 325 | |
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| 326 | default: |
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| 327 | print_rtx (rtx_first); |
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| 328 | } |
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| 329 | } |
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