[Bug tree-optimization/66823] -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66823

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2015-07-09
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Index: gcc/tree-if-conv.c
===================================================================
--- gcc/tree-if-conv.c  (revision 225610)
+++ gcc/tree-if-conv.c  (working copy)
@@ -642,7 +642,7 @@ memrefs_read_or_written_unconditionally
                    || 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)));