(try_combine): Don't make complemented NOT for constant out of range.

From-SVN: r7370

diff --git a/gcc/combine.c b/gcc/combine.c
index cec950b41fdd6bee4eeef3508c7458b6de420cd9..e65496be6d1b574e9591f949cc7ba0917f6a2244 100644 (file)
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -1704,32 +1704,6 @@ try_combine (i3, i2, i1)
       insn_code_number = recog_for_combine (&newpat, i3, &new_i3_notes);
     }
 
-  /* See if this is an XOR.  If so, perhaps the problem is that the
-     constant is out of range.  Replace it with a complemented XOR with
-     a complemented constant; it might be in range.  */
-
-  else if (insn_code_number < 0 && GET_CODE (newpat) == SET
-          && GET_CODE (SET_SRC (newpat)) == XOR
-          && GET_CODE (XEXP (SET_SRC (newpat), 1)) == CONST_INT
-          && ((temp = simplify_unary_operation (NOT,
-                                                GET_MODE (SET_SRC (newpat)),
-                                                XEXP (SET_SRC (newpat), 1),
-                                                GET_MODE (SET_SRC (newpat))))
-              != 0))
-    {
-      enum machine_mode i_mode = GET_MODE (SET_SRC (newpat));
-      rtx pat
-       = gen_rtx_combine (SET, VOIDmode, SET_DEST (newpat),
-                          gen_unary (NOT, i_mode,
-                                     gen_binary (XOR, i_mode,
-                                                 XEXP (SET_SRC (newpat), 0),
-                                                 temp)));
-
-      insn_code_number = recog_for_combine (&pat, i3, &new_i3_notes);
-      if (insn_code_number >= 0)
-       newpat = pat;
-    }
-                                                       
   /* If we were combining three insns and the result is a simple SET
      with no ASM_OPERANDS that wasn't recognized, try to split it into two
      insns.  There are two ways to do this.  It can be split using a