2012-01-04 Richard Guenther <rguenther@suse.de>

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

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index c2bc56b..452e99a 100644 (file)
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -3595,6 +3595,7 @@ try_split (rtx pat, rtx trial, int last)
 
        case REG_NORETURN:
        case REG_SETJMP:
+       case REG_TM:
          for (insn = insn_last; insn != NULL_RTX; insn = PREV_INSN (insn))
            {
              if (CALL_P (insn))
@@ -5003,6 +5004,17 @@ set_unique_reg_note (rtx insn, enum reg_note kind, rtx datum)
 
   return REG_NOTES (insn);
 }
+
+/* Like set_unique_reg_note, but don't do anything unless INSN sets DST.  */
+rtx
+set_dst_reg_note (rtx insn, enum reg_note kind, rtx datum, rtx dst)
+{
+  rtx set = single_set (insn);
+
+  if (set && SET_DEST (set) == dst)
+    return set_unique_reg_note (insn, kind, datum);
+  return NULL_RTX;
+}
 \f
 /* Return an indication of which type of insn should have X as a body.
    The value is CODE_LABEL, INSN, CALL_INSN or JUMP_INSN.  */
@@ -5705,6 +5717,11 @@ init_emit_once (void)
        mode = GET_MODE_WIDER_MODE (mode))
     const_tiny_rtx[3][(int) mode] = constm1_rtx;
 
+  for (mode = GET_CLASS_NARROWEST_MODE (MODE_PARTIAL_INT);
+       mode != VOIDmode;
+       mode = GET_MODE_WIDER_MODE (mode))
+    const_tiny_rtx[3][(int) mode] = constm1_rtx;
+      
   for (mode = GET_CLASS_NARROWEST_MODE (MODE_COMPLEX_INT);
        mode != VOIDmode;
        mode = GET_MODE_WIDER_MODE (mode))