tree-ssa-sccvn.c (vn_reference_lookup_3): Use a uniform test and update…

tree-ssa-sccvn.c (vn_reference_lookup_3): Use a uniform test and update shared_lookup_references only once after changing...

	* tree-ssa-sccvn.c (vn_reference_lookup_3): Use a uniform test and
	update shared_lookup_references only once after changing operands.

From-SVN: r237388

gcc/ChangeLog

+2016-06-13  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* tree-ssa-sccvn.c (vn_reference_lookup_3): Use a uniform test and
+	update shared_lookup_references only once after changing operands.
+
 2016-06-13  Thomas Schwinge  <thomas@codesourcery.com>
 
 	PR middle-end/71373

gcc/tree-ssa-sccvn.c

@@ -2089,11 +2089,7 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_,
       /* We need to pre-pend vr->operands[0..i] to rhs.  */
       vec<vn_reference_op_s> old = vr->operands;
       if (i + 1 + rhs.length () > vr->operands.length ())
-	{
-	  vr->operands.safe_grow (i + 1 + rhs.length ());
-	  if (old == shared_lookup_references)
-	    shared_lookup_references = vr->operands;
-	}
+	vr->operands.safe_grow (i + 1 + rhs.length ());
       else
 	vr->operands.truncate (i + 1 + rhs.length ());
       FOR_EACH_VEC_ELT (rhs, j, vro)
@@ -2244,8 +2240,7 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_,
 	{
 	  vec<vn_reference_op_s> old = vr->operands;
 	  vr->operands.safe_grow_cleared (2);
-	  if (old == shared_lookup_references
-	      && vr->operands != old)
+	  if (old == shared_lookup_references)
 	    shared_lookup_references = vr->operands;
 	}
       else