From: Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Date: Tue, 15 Apr 2003 13:06:58 +0000 (+0000)
Subject: optabs.c (expand_binop): In multi-word add cases, ensure XTARGET is copied to TARGET... 
X-Git-Tag: releases/gcc-3.4.0~7277
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d0ccc658cb93a6a31a4324302ff6175244dab968;p=thirdparty%2Fgcc.git

optabs.c (expand_binop): In multi-word add cases, ensure XTARGET is copied to TARGET if they are different.

	* optabs.c (expand_binop): In multi-word add cases, ensure
	XTARGET is copied to TARGET if they are different.

From-SVN: r65632
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 092ae7cc8c1a..4c375c0b8c6e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-04-15  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+	* optabs.c (expand_binop): In multi-word add cases, ensure
+	XTARGET is copied to TARGET if they are different.
+
 2003-04-15  Olivier Hainque <hainque@act-europe.fr>
 
 	* except.c (resolve_fixup_regions): Avoid dereferencing null pointer
diff --git a/gcc/optabs.c b/gcc/optabs.c
index 59f714714e01..f57c81448dd3 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -1299,7 +1299,8 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
 
       if (i == GET_MODE_BITSIZE (mode) / (unsigned) BITS_PER_WORD)
 	{
-	  if (mov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
+	  if (mov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing
+	      || ! rtx_equal_p (target, xtarget))
 	    {
 	      rtx temp = emit_move_insn (target, xtarget);