Initial revision

From-SVN: r137

gcc/print-rtl.c

+/* Print RTL for GNU C Compiler.
+   Copyright (C) 1987-1991 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+#include "config.h"
+#include <ctype.h>
+#include <stdio.h>
+#include "rtl.h"
+
+
+static FILE *outfile;
+
+char spaces[] = "                                                                                                                                                                ";
+
+static int sawclose = 0;
+
+/* Names for patterns.  Non-zero only when linked with insn-output.c.  */
+
+extern char **insn_name_ptr;
+
+/* Print IN_RTX onto OUTFILE.  This is the recursive part of printing.  */
+
+static void
+print_rtx (in_rtx)
+     register rtx in_rtx;
+{
+  static int indent;
+  register int i, j;
+  register char *format_ptr;
+  register int is_insn;
+
+  if (sawclose)
+    {
+      fprintf (outfile, "\n%s",
+	       (spaces + (sizeof spaces - indent * 2)));
+      sawclose = 0;
+    }
+
+  if (in_rtx == 0)
+    {
+      fprintf (outfile, "(nil)");
+      sawclose = 1;
+      return;
+    }
+
+  /* print name of expression code */
+  fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
+
+  if (in_rtx->in_struct)
+    fprintf (outfile, "/s");
+
+  if (in_rtx->volatil)
+    fprintf (outfile, "/v");
+
+  if (in_rtx->unchanging)
+    fprintf (outfile, "/u");
+
+  if (in_rtx->integrated)
+    fprintf (outfile, "/i");
+
+  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)));
+    }
+
+  is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
+  format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx));
+
+  for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
+    switch (*format_ptr++)
+      {
+      case 'S':
+      case 's':
+	if (XSTR (in_rtx, i) == 0)
+	  fprintf (outfile, " \"\"");
+	else
+	  fprintf (outfile, " (\"%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",
+		     (spaces + (sizeof spaces - indent * 2)));
+	    sawclose = 0;
+	  }
+	fprintf (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",
+		   (spaces + (sizeof spaces - indent * 2)));
+
+	fprintf (outfile, "] ");
+	sawclose = 1;
+	indent -= 2;
+	break;
+
+      case 'i':
+	fprintf (outfile, " %d", XINT (in_rtx, i));
+	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)
+	  fprintf(outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
+	else
+	  fprintf(outfile, " 0");
+	sawclose = 0;
+	break;
+
+      default:
+	fprintf (stderr,
+		 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
+		 format_ptr[-1]);
+	abort ();
+      }
+
+  fprintf (outfile, ")");
+  sawclose = 1;
+}
+
+/* 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");
+}
+
+/* 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)
+    fprintf (outf, "(nil)\n");
+  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))
+	  {
+	    print_rtx (tmp_rtx);
+	    fprintf (outfile, "\n");
+	  }
+	break;
+
+      default:
+	print_rtx (rtx_first);
+      }
+}