2004-03-01 Paolo Bonzini <bonzini@gnu.org>

[pf3gnuchains/gcc-fork.git] / gcc / rtl.c

diff --git a/gcc/rtl.c b/gcc/rtl.c
index 313e2cb..6449630 100644 (file)
--- a/gcc/rtl.c
+++ b/gcc/rtl.c
@@ -1,6 +1,6 @@
 /* RTL utility routines.
    Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
-   2003 Free Software Foundation, Inc.
+   2003, 2004 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -122,7 +122,7 @@ const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS] =
   "NOTE_INSN_EH_REGION_BEG", "NOTE_INSN_EH_REGION_END",
   "NOTE_INSN_REPEATED_LINE_NUMBER",
   "NOTE_INSN_BASIC_BLOCK", "NOTE_INSN_EXPECTED_VALUE",
-  "NOTE_INSN_PREDICTION"
+  "NOTE_INSN_PREDICTION", "NOTE_INSN_VAR_LOCATION"
 };
 
 const char * const reg_note_name[] =
@@ -156,7 +156,7 @@ rtvec_alloc (int n)
   rtvec rt;
 
   rt = ggc_alloc_rtvec (n);
-  /* clear out the vector */
+  /* Clear out the vector.  */
   memset (&rt->elem[0], 0, n * sizeof (rtx));
 
   PUT_NUM_ELEM (rt, n);
@@ -224,6 +224,10 @@ copy_rtx (rtx orig)
       /* SCRATCH must be shared because they represent distinct values.  */
     case ADDRESSOF:
       return orig;
+    case CLOBBER:
+      if (REG_P (XEXP (orig, 0)) && REGNO (XEXP (orig, 0)) < FIRST_PSEUDO_REGISTER)
+       return orig;
+      break;
 
     case CONST:
       /* CONST can be shared if it contains a SYMBOL_REF.  If it contains