From: Richard Kenner <kenner@gcc.gnu.org>
Date: Thu, 28 Jan 1993 00:22:17 +0000 (-0500)
Subject: (compare_from_rtx): Only swap operand if first is a constant and
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bf743ac5ed9fc641a83dc52fd0e7f099518aa647;p=gcc.git

(compare_from_rtx): Only swap operand if first is a constant and
second is not.

From-SVN: r3370
---

diff --git a/gcc/expr.c b/gcc/expr.c
index 1a3cd5b5343..6b4a57a3526 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -7116,9 +7116,11 @@ compare_from_rtx (op0, op1, code, unsignedp, mode, size, align)
 {
   rtx tem;
 
-  /* If one operand is constant, make it the second one.  */
+  /* If one operand is constant, make it the second one.  Only do this
+     if the other operand is not constant as well.  */
 
-  if (GET_CODE (op0) == CONST_INT || GET_CODE (op0) == CONST_DOUBLE)
+  if ((CONSTANT_P (op0) && ! CONSTANT_P (op1))
+      || (GET_CODE (op0) == CONST_INT && GET_CODE (op1) != CONST_INT))
     {
       tem = op0;
       op0 = op1;