re PR middle-end/68339 (g++.dg/vect/simd-clone-2.cc ICEs with aggressive GC settings and OpenMP)

	PR middle-end/68339
	* omp-low.c (expand_simd_clones): Call node->get_body () before
	allocating stuff in GC.

	* gcc.dg/vect/pr68339.c: New test.

From-SVN: r230671

gcc/ChangeLog

+2015-11-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/68339
+	* omp-low.c (expand_simd_clones): Call node->get_body () before
+	allocating stuff in GC.
+
 2015-11-20  Jim Wilson  <jim.wilson@linaro.org>
 
 	* tree-vect-data-refs.c (compare_tree): Call STRIP_NOPS.

gcc/omp-low.c

@@ -18319,6 +18319,10 @@ expand_simd_clones (struct cgraph_node *node)
       && TYPE_ARG_TYPES (TREE_TYPE (node->decl)) == NULL_TREE)
     return;
 
+  /* Call this before creating clone_info, as it might ggc_collect.  */
+  if (node->definition && node->has_gimple_body_p ())
+    node->get_body ();
+
   do
     {
       /* Start with parsing the "omp declare simd" attribute(s).  */

gcc/testsuite/ChangeLog

+2015-11-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/68339
+	* gcc.dg/vect/pr68339.c: New test.
+
 2015-11-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* gcc.target/arm/armv6-unaligned-load-ice.c: New test.

gcc/testsuite/gcc.dg/vect/pr68339.c

+/* PR middle-end/68339 */
+/* { dg-do compile } */
+/* { dg-options "--param ggc-min-heapsize=0 --param ggc-min-expand=0 -fopenmp-simd" } */
+
+#pragma omp declare simd notinbranch
+int
+f1 (int x)
+{
+  return x;
+}
+
+#pragma omp declare simd notinbranch
+int
+f2 (int x)
+{
+  return x;
+}