From: Jan Hubicka <jh@suse.cz>
Date: Mon, 9 Jul 2007 10:22:36 +0000 (+0000)
Subject: * cse.c (cse_insn): Avoid invalid sharing on trial replacement.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d241cd48e0e43ac4f3db513e32e0b66805b4a87f;p=gcc.git

* cse.c (cse_insn): Avoid invalid sharing on trial replacement.

From-SVN: r126481
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a98964b9dc1..daa2d947d7b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2007-07-09  Jan HUbicka  <jh@suse.cz>
+
+	* cse.c (cse_insn): Avoid invalid sharing on trial replacement.
+
 2007-07-09  Richard Guenther  <rguenther@suse.de>
 
 	* c-decl.c (start_function): Do not promote return type.
diff --git a/gcc/cse.c b/gcc/cse.c
index d79ad68ac78..234bcc7bfe6 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -4830,7 +4830,8 @@ cse_insn (rtx insn, rtx libcall_insn)
 	    ;
 
 	  /* Look for a substitution that makes a valid insn.  */
-	  else if (validate_change (insn, &SET_SRC (sets[i].rtl), trial, 0))
+	  else if (validate_unshare_change
+		     (insn, &SET_SRC (sets[i].rtl), trial, 0))
 	    {
 	      rtx new = canon_reg (SET_SRC (sets[i].rtl), insn);