Add clobber for object, after last use.

	gcc/
	* omp-low.c (lower_omp_target): Add clobber for sizes array, after
	last use.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@207723 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 78bf506..25f1bf4 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 2014-02-12  Thomas Schwinge  <thomas@codesourcery.com>
 
+       * omp-low.c (lower_omp_target): Add clobber for sizes array, after
+       last use.
+
        * omp-low.c (diagnose_sb_0): Make sure label_ctx is valid to
        dereference.
 

diff --git a/gcc/omp-low.c b/gcc/omp-low.c
index ff3d2e8..e7fc730 100644 (file)
--- a/gcc/omp-low.c
+++ b/gcc/omp-low.c
@@ -9812,6 +9812,13 @@ lower_omp_target (gimple_stmt_iterator *gsi_p, omp_context *ctx)
                                        TREE_VEC_ELT (t, 1)),
                                &initlist, true, NULL_TREE);
          gimple_seq_add_seq (&ilist, initlist);
+
+         tree clobber = build_constructor (TREE_TYPE (TREE_VEC_ELT (t, 1)),
+                                           NULL);
+         TREE_THIS_VOLATILE (clobber) = 1;
+         gimple_seq_add_stmt (&olist,
+                              gimple_build_assign (TREE_VEC_ELT (t, 1),
+                                                   clobber));
        }
 
       tree clobber = build_constructor (ctx->record_type, NULL);