re PR tree-optimization/66823 (-ftree-loop-if-convert-stores miscompiles…

re PR tree-optimization/66823 (-ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90)

2015-07-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66823
	* tree-if-conv.c (memrefs_read_or_written_unconditionally): Fix
	inverted predicate.

	* gcc.dg/vect/pr61194.c: Remove -ftree-loop-if-convert-stores
	which should not be necessary.  XFAIL.

From-SVN: r225652

gcc/ChangeLog

+2015-07-10  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/66823
+	* tree-if-conv.c (memrefs_read_or_written_unconditionally): Fix
+	inverted predicate.
+
 2015-07-09  Steve Ellcey  <sellcey@imgtec.com>
 
 	* config/mips/mti-linux.h (MIPS_SYSVERSION_SPEC): Update

gcc/testsuite/ChangeLog

+2015-07-10  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/66823
+	* gcc.dg/vect/pr61194.c: Remove -ftree-loop-if-convert-stores
+	which should not be necessary.  XFAIL.
+
 2015-07-09  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/64848

gcc/testsuite/gcc.dg/vect/pr61194.c

 /* { dg-require-effective-target vect_cond_mixed } */
-/* { dg-additional-options "-ftree-loop-if-convert-stores" } */
 
 #include "tree-vect.h"
 
@@ -39,4 +38,4 @@ int main()
   return 0;
 }
 
-/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail *-*-* } } } */

gcc/tree-if-conv.c

@@ -642,7 +642,7 @@ memrefs_read_or_written_unconditionally (gimple stmt,
                    || TREE_CODE (ref_base_b) == REALPART_EXPR)
               ref_base_b = TREE_OPERAND (ref_base_b, 0);
 
-  	    if (!operand_equal_p (ref_base_a, ref_base_b, 0))
+  	    if (operand_equal_p (ref_base_a, ref_base_b, 0))
 	      {
 	        tree cb = bb_predicate (gimple_bb (DR_STMT (b)));