cse.c (exp_equiv_p): Special case CONST_DOUBLE.

        * cse.c (exp_equiv_p): Special case CONST_DOUBLE.
        * cselib.c (rtx_equal_for_cselib_p): Likewise.
        * jump.c (rtx_renumbered_equal_p): Likewise.
        * loop.c (rtx_equal_for_loop_p): Tidy and special case PC, CC0,
        CONST_INT and CONST_DOUBLE.
        (rtx_equal_for_prefetch_p): Likewise, plus LABEL_REF.
        * reload.c (operands_match_p): Special case CONST_INT and
        CONST_DOUBLE; check mode earlier.

From-SVN: r102548

1 files changed, 17 insertions, 7 deletions

diff --git a/gcc/reload.c b/gcc/reload.c
index e2d4a8e..378db66 100644
--- a/gcc/reload.c
+++ b/gcc/reload.c
@@ -2208,20 +2208,30 @@ operands_match_p (rtx x, rtx y)
 
  slow:
 
-  /* Now we have disposed of all the cases
-     in which different rtx codes can match.  */
+  /* Now we have disposed of all the cases in which different rtx codes
+     can match.  */
   if (code != GET_CODE (y))
     return 0;
-  if (code == LABEL_REF)
-    return XEXP (x, 0) == XEXP (y, 0);
-  if (code == SYMBOL_REF)
-    return XSTR (x, 0) == XSTR (y, 0);
 
   /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.  */
-
   if (GET_MODE (x) != GET_MODE (y))
     return 0;
 
+  switch (code)
+    {
+    case CONST_INT:
+    case CONST_DOUBLE:
+      return 0;
+
+    case LABEL_REF:
+      return XEXP (x, 0) == XEXP (y, 0);
+    case SYMBOL_REF:
+      return XSTR (x, 0) == XSTR (y, 0);
+
+    default:
+      break;
+    }
+
   /* Compare the elements.  If any pair of corresponding elements
      fail to match, return 0 for the whole things.  */