tree-if-conv.c (find_phi_replacement_condition): Unshare "*cond" before forcing…

tree-if-conv.c (find_phi_replacement_condition): Unshare "*cond" before forcing it to gimple operand.

        * tree-if-conv.c (find_phi_replacement_condition): Unshare "*cond"
        before forcing it to gimple operand.


Co-Authored-By: Uros Bizjak <ubizjak@gmail.com>

From-SVN: r126692

gcc/ChangeLog

+2007-07-16  Richard Guenther  <rguenther@suse.de>
+	    Uros Bizjak  <ubizjak@gmail.com>
+
+	* tree-if-conv.c (find_phi_replacement_condition): Unshare "*cond"
+	before forcing it to gimple operand.
+
 2007-07-16  Sandra Loosemore  <sandra@codesourcery.com>
 	    David Ung  <davidu@mips.com>
 

gcc/tree-if-conv.c

@@ -751,7 +751,7 @@ find_phi_replacement_condition (struct loop *loop,
       if (TREE_CODE (*cond) == TRUTH_NOT_EXPR)
 	/* We can be smart here and choose inverted
 	   condition without switching bbs.  */
-	  *cond = invert_truthvalue (*cond);
+	*cond = invert_truthvalue (*cond);
       else
 	/* Select non loop header bb.  */
 	first_edge = second_edge;
@@ -770,9 +770,11 @@ find_phi_replacement_condition (struct loop *loop,
 
   /* Create temp. for the condition. Vectorizer prefers to have gimple
      value as condition. Various targets use different means to communicate
-     condition in vector compare operation. Using gimple value allows compiler
-     to emit vector compare and select RTL without exposing compare's result.  */
-  *cond = force_gimple_operand_bsi (bsi, *cond, false, NULL_TREE,
+     condition in vector compare operation. Using gimple value allows
+     compiler to emit vector compare and select RTL without exposing
+     compare's result.  */
+  *cond = force_gimple_operand_bsi (bsi, unshare_expr (*cond),
+				    false, NULL_TREE,
 				    true, BSI_SAME_STMT);
   if (!is_gimple_reg (*cond) && !is_gimple_condexpr (*cond))
     {