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

From-SVN: r126481

* cse.c (cse_insn): Avoid invalid sharing on trial replacement.
From-SVN: r126481
d241cd48 · Jan Hubicka · Jan Hubicka · f967586f · d241cd48 · d241cd48
Commit d241cd48 authored Jul 09, 2007 by Jan Hubicka Committed by Jan Hubicka Jul 09, 2007
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gcc/ChangeLog
+4 -0

gcc/cse.c
+2 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+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.

--- 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);