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Diffstat (limited to 'gnu/egcs/gcc/print-rtl.c')
-rw-r--r--gnu/egcs/gcc/print-rtl.c486
1 files changed, 486 insertions, 0 deletions
diff --git a/gnu/egcs/gcc/print-rtl.c b/gnu/egcs/gcc/print-rtl.c
new file mode 100644
index 00000000000..e097aadfe48
--- /dev/null
+++ b/gnu/egcs/gcc/print-rtl.c
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+/* Print RTL for GNU C Compiler.
+ Copyright (C) 1987, 1988, 1992, 1997, 1998 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+
+#include "config.h"
+#include "system.h"
+#include "rtl.h"
+#include "real.h"
+#include "flags.h"
+#include "basic-block.h"
+
+
+/* How to print out a register name.
+ We don't use PRINT_REG because some definitions of PRINT_REG
+ don't work here. */
+#ifndef DEBUG_PRINT_REG
+#define DEBUG_PRINT_REG(RTX, CODE, FILE) \
+ fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
+#endif
+
+/* Array containing all of the register names */
+
+#ifdef DEBUG_REGISTER_NAMES
+static char *reg_names[] = DEBUG_REGISTER_NAMES;
+#else
+static char *reg_names[] = REGISTER_NAMES;
+#endif
+
+static FILE *outfile;
+
+static const char xspaces[] = " ";
+
+static int sawclose = 0;
+
+static int indent;
+
+/* Names for patterns. Non-zero only when linked with insn-output.c. */
+
+extern char **insn_name_ptr;
+
+static void print_rtx PROTO ((rtx));
+
+/* Nonzero means suppress output of instruction numbers and line number
+ notes in debugging dumps.
+ This must be defined here so that programs like gencodes can be linked. */
+int flag_dump_unnumbered = 0;
+
+/* Nonzero if we are dumping graphical description. */
+int dump_for_graph;
+
+/* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
+
+static void
+print_rtx (in_rtx)
+ register rtx in_rtx;
+{
+ register int i = 0;
+ register int j;
+ register char *format_ptr;
+ register int is_insn;
+
+ if (sawclose)
+ {
+ fprintf (outfile, "\n%s",
+ (xspaces + (sizeof xspaces - 1 - indent * 2)));
+ sawclose = 0;
+ }
+
+ if (in_rtx == 0)
+ {
+ fputs ("(nil)", outfile);
+ sawclose = 1;
+ return;
+ }
+
+ is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
+
+ /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
+ in separate nodes and therefore have to handle them special here. */
+ if (dump_for_graph &&
+ (is_insn || GET_CODE (in_rtx) == NOTE || GET_CODE (in_rtx) == CODE_LABEL
+ || GET_CODE (in_rtx) == BARRIER))
+ {
+ i = 3;
+ indent = 0;
+ }
+ else
+ {
+ /* print name of expression code */
+ fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
+
+ if (in_rtx->in_struct)
+ fputs ("/s", outfile);
+
+ if (in_rtx->volatil)
+ fputs ("/v", outfile);
+
+ if (in_rtx->unchanging)
+ fputs ("/u", outfile);
+
+ if (in_rtx->integrated)
+ fputs ("/i", outfile);
+
+ if (in_rtx->frame_related)
+ fputs ("/f", outfile);
+
+ if (in_rtx->jump)
+ fputs ("/j", outfile);
+
+ if (in_rtx->call)
+ fputs ("/c", outfile);
+
+ if (GET_MODE (in_rtx) != VOIDmode)
+ {
+ /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
+ if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
+ fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
+ else
+ fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
+ }
+ }
+
+ /* Get the format string and skip the first elements if we have handled
+ them already. */
+ format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
+
+ for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
+ switch (*format_ptr++)
+ {
+ case 'S':
+ case 's':
+ if (i == 3 && GET_CODE (in_rtx) == NOTE
+ && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
+ || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END
+ || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_BEG
+ || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_END))
+ {
+ fprintf (outfile, " %d", NOTE_BLOCK_NUMBER (in_rtx));
+ sawclose = 1;
+ break;
+ }
+
+ if (i == 3 && GET_CODE (in_rtx) == NOTE
+ && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_START
+ || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_END
+ || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_LIVE))
+ {
+ indent += 2;
+ if (!sawclose)
+ fprintf (outfile, " ");
+ print_rtx (NOTE_RANGE_INFO (in_rtx));
+ indent -= 2;
+ break;
+ }
+
+ if (i == 3 && GET_CODE (in_rtx) == NOTE
+ && NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BASIC_BLOCK)
+ {
+ basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
+ fprintf (outfile, " [bb %d]", bb->index);
+ break;
+ }
+
+ if (XSTR (in_rtx, i) == 0)
+ fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
+ else
+ fprintf (outfile, dump_for_graph ? " (\\\"%s\\\")" : " (\"%s\")",
+ XSTR (in_rtx, i));
+ sawclose = 1;
+ break;
+
+ /* 0 indicates a field for internal use that should not be printed. */
+ case '0':
+ break;
+
+ case 'e':
+ indent += 2;
+ if (!sawclose)
+ fprintf (outfile, " ");
+ print_rtx (XEXP (in_rtx, i));
+ indent -= 2;
+ break;
+
+ case 'E':
+ case 'V':
+ indent += 2;
+ if (sawclose)
+ {
+ fprintf (outfile, "\n%s",
+ (xspaces + (sizeof xspaces - 1 - indent * 2)));
+ sawclose = 0;
+ }
+ fputs ("[ ", outfile);
+ if (NULL != XVEC (in_rtx, i))
+ {
+ indent += 2;
+ if (XVECLEN (in_rtx, i))
+ sawclose = 1;
+
+ for (j = 0; j < XVECLEN (in_rtx, i); j++)
+ print_rtx (XVECEXP (in_rtx, i, j));
+
+ indent -= 2;
+ }
+ if (sawclose)
+ fprintf (outfile, "\n%s",
+ (xspaces + (sizeof xspaces - 1 - indent * 2)));
+
+ fputs ("] ", outfile);
+ sawclose = 1;
+ indent -= 2;
+ break;
+
+ case 'w':
+ fprintf (outfile, " ");
+ fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
+ fprintf (outfile, " [");
+ fprintf (outfile, HOST_WIDE_INT_PRINT_HEX, XWINT (in_rtx, i));
+ fprintf (outfile, "]");
+ break;
+
+ case 'i':
+ {
+ register int value = XINT (in_rtx, i);
+
+ if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
+ {
+ fputc (' ', outfile);
+ DEBUG_PRINT_REG (in_rtx, 0, outfile);
+ }
+ else if (flag_dump_unnumbered
+ && (is_insn || GET_CODE (in_rtx) == NOTE))
+ fputc ('#', outfile);
+ else
+ fprintf (outfile, " %d", value);
+ }
+ if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
+ && insn_name_ptr
+ && XINT (in_rtx, i) >= 0)
+ fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
+ sawclose = 0;
+ break;
+
+ /* Print NOTE_INSN names rather than integer codes. */
+
+ case 'n':
+ if (XINT (in_rtx, i) <= 0)
+ fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
+ else
+ fprintf (outfile, " %d", XINT (in_rtx, i));
+ sawclose = 0;
+ break;
+
+ case 'u':
+ if (XEXP (in_rtx, i) != NULL)
+ {
+ if (flag_dump_unnumbered)
+ fputc ('#', outfile);
+ else
+ fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
+ }
+ else
+ fputs (" 0", outfile);
+ sawclose = 0;
+ break;
+
+ case 'b':
+ if (XBITMAP (in_rtx, i) == NULL)
+ fputs (" {null}", outfile);
+ else
+ bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
+ sawclose = 0;
+ break;
+
+ case 't':
+ putc (' ', outfile);
+ fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
+ break;
+
+ case '*':
+ fputs (" Unknown", outfile);
+ sawclose = 0;
+ break;
+
+ default:
+ fprintf (stderr,
+ "switch format wrong in rtl.print_rtx(). format was: %c.\n",
+ format_ptr[-1]);
+ abort ();
+ }
+
+ if (GET_CODE (in_rtx) == MEM)
+ fprintf (outfile, " %d", MEM_ALIAS_SET (in_rtx));
+
+#if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && LONG_DOUBLE_TYPE_SIZE == 64
+ if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
+ {
+ double val;
+ REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
+ fprintf (outfile, " [%.16g]", val);
+ }
+#endif
+
+ if (GET_CODE (in_rtx) == CODE_LABEL)
+ fprintf (outfile, " [num uses: %d]", LABEL_NUSES (in_rtx));
+
+ if (dump_for_graph
+ && (is_insn || GET_CODE (in_rtx) == NOTE
+ || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
+ sawclose = 0;
+ else
+ {
+ fputc (')', outfile);
+ sawclose = 1;
+ }
+}
+
+/* Print an rtx on the current line of FILE. Initially indent IND
+ characters. */
+
+void
+print_inline_rtx (outf, x, ind)
+ FILE *outf;
+ rtx x;
+ int ind;
+{
+ int oldsaw = sawclose;
+ int oldindent = indent;
+
+ sawclose = 0;
+ indent = ind;
+ outfile = outf;
+ print_rtx (x);
+ sawclose = oldsaw;
+ indent = oldindent;
+}
+
+/* Call this function from the debugger to see what X looks like. */
+
+void
+debug_rtx (x)
+ rtx x;
+{
+ outfile = stderr;
+ print_rtx (x);
+ fprintf (stderr, "\n");
+}
+
+/* Count of rtx's to print with debug_rtx_list.
+ This global exists because gdb user defined commands have no arguments. */
+
+int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
+
+/* Call this function to print list from X on.
+
+ N is a count of the rtx's to print. Positive values print from the specified
+ rtx on. Negative values print a window around the rtx.
+ EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
+
+void
+debug_rtx_list (x, n)
+ rtx x;
+ int n;
+{
+ int i,count;
+ rtx insn;
+
+ count = n == 0 ? 1 : n < 0 ? -n : n;
+
+ /* If we are printing a window, back up to the start. */
+
+ if (n < 0)
+ for (i = count / 2; i > 0; i--)
+ {
+ if (PREV_INSN (x) == 0)
+ break;
+ x = PREV_INSN (x);
+ }
+
+ for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
+ debug_rtx (insn);
+}
+
+/* Call this function to search an rtx list to find one with insn uid UID,
+ and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
+ The found insn is returned to enable further debugging analysis. */
+
+rtx
+debug_rtx_find (x, uid)
+ rtx x;
+ int uid;
+{
+ while (x != 0 && INSN_UID (x) != uid)
+ x = NEXT_INSN (x);
+ if (x != 0)
+ {
+ debug_rtx_list (x, debug_rtx_count);
+ return x;
+ }
+ else
+ {
+ fprintf (stderr, "insn uid %d not found\n", uid);
+ return 0;
+ }
+}
+
+/* External entry point for printing a chain of insns
+ starting with RTX_FIRST onto file OUTF.
+ A blank line separates insns.
+
+ If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
+
+void
+print_rtl (outf, rtx_first)
+ FILE *outf;
+ rtx rtx_first;
+{
+ register rtx tmp_rtx;
+
+ outfile = outf;
+ sawclose = 0;
+
+ if (rtx_first == 0)
+ fputs ("(nil)\n", outf);
+ else
+ switch (GET_CODE (rtx_first))
+ {
+ case INSN:
+ case JUMP_INSN:
+ case CALL_INSN:
+ case NOTE:
+ case CODE_LABEL:
+ case BARRIER:
+ for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
+ {
+ if (! flag_dump_unnumbered
+ || GET_CODE (tmp_rtx) != NOTE
+ || NOTE_LINE_NUMBER (tmp_rtx) < 0)
+ {
+ print_rtx (tmp_rtx);
+ fprintf (outfile, "\n");
+ }
+ }
+ break;
+
+ default:
+ print_rtx (rtx_first);
+ }
+}
+
+/* Like print_rtx, except specify a file. */
+/* Return nonzero if we actually printed anything. */
+
+int
+print_rtl_single (outf, x)
+ FILE *outf;
+ rtx x;
+{
+ outfile = outf;
+ sawclose = 0;
+ if (! flag_dump_unnumbered
+ || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)
+ {
+ print_rtx (x);
+ putc ('\n', outf);
+ return 1;
+ }
+ return 0;
+}
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