From: James E Wilson <wilson@specifixinc.com>
Date: Wed, 18 Feb 2004 06:49:58 +0000 (+0000)
Subject: Fix rtl sharing problem reported by Daniel Bayer on gcc list.
X-Git-Tag: releases/gcc-4.0.0~10045
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ce7b36a482a89e8f016645630d6461ba94a1f654;p=thirdparty%2Fgcc.git

Fix rtl sharing problem reported by Daniel Bayer on gcc list.

	* caller-save.c (insert_restore): Pass mem through copy_rtx.
	(insert_save): Likewise.

From-SVN: r78010
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2b15336a2ef8..00f6effb135a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-02-17  James E Wilson  <wilson@specifixinc.com>
+
+	* caller-save.c (insert_restore): Pass mem through copy_rtx.
+	(insert_save): Likewise.
+
 2004-02-17  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* config/h8300/h8300.c (h8300_emit_stack_adjustment): Fix a
diff --git a/gcc/caller-save.c b/gcc/caller-save.c
index c5ba0c55bc5d..028705b43898 100644
--- a/gcc/caller-save.c
+++ b/gcc/caller-save.c
@@ -685,6 +685,8 @@ insert_restore (struct insn_chain *chain, int before_p, int regno,
       && save_mode [regno] != GET_MODE (mem)
       && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]])
     mem = adjust_address (mem, save_mode[regno], 0);
+  else
+    mem = copy_rtx (mem);
   pat = gen_rtx_SET (VOIDmode,
 		     gen_rtx_REG (GET_MODE (mem),
 				  regno), mem);
@@ -757,6 +759,8 @@ insert_save (struct insn_chain *chain, int before_p, int regno,
       && save_mode [regno] != GET_MODE (mem)
       && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]])
     mem = adjust_address (mem, save_mode[regno], 0);
+  else
+    mem = copy_rtx (mem);
   pat = gen_rtx_SET (VOIDmode, mem,
 		     gen_rtx_REG (GET_MODE (mem),
 				  regno));