re PR middle-end/66820 (internal compiler error: in get_expr_operands, at tree-ssa-operands.c:910)

	PR middle-end/66820
	* gimplify.c (maybe_fold_stmt): Don't fold in ORT_PARALLEL
	or ORT_TASK contexts.
	* omp-low.c (lower_omp): Call fold_stmt even if taskreg_nesting_level
	is non-zero.

	* gcc.dg/gomp/pr66820.c: New test.

From-SVN: r225661

gcc/ChangeLog

+2015-07-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/66820
+	* gimplify.c (maybe_fold_stmt): Don't fold in ORT_PARALLEL
+	or ORT_TASK contexts.
+	* omp-low.c (lower_omp): Call fold_stmt even if taskreg_nesting_level
+	is non-zero.
+
 2015-07-10  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* expr.c (expand_cond_expr_using_cmove): Fix typos in comment

gcc/gimplify.c

@@ -2245,16 +2245,17 @@ gimplify_arg (tree *arg_p, gimple_seq *pre_p, location_t call_location)
   return gimplify_expr (arg_p, pre_p, NULL, test, fb);
 }
 
-/* Don't fold inside offloading regions: it can break code by adding decl
-   references that weren't in the source.  We'll do it during omplower pass
-   instead.  */
+/* Don't fold inside offloading or taskreg regions: it can break code by
+   adding decl references that weren't in the source.  We'll do it during
+   omplower pass instead.  */
 
 static bool
 maybe_fold_stmt (gimple_stmt_iterator *gsi)
 {
   struct gimplify_omp_ctx *ctx;
   for (ctx = gimplify_omp_ctxp; ctx; ctx = ctx->outer_context)
-    if (ctx->region_type == ORT_TARGET)
+    if (ctx->region_type == ORT_TARGET
+	|| (ctx->region_type & (ORT_PARALLEL | ORT_TASK)) != 0)
       return false;
   return fold_stmt (gsi);
 }

gcc/omp-low.c

@@ -11890,8 +11890,8 @@ lower_omp (gimple_seq *body, omp_context *ctx)
   for (gsi = gsi_start (*body); !gsi_end_p (gsi); gsi_next (&gsi))
     lower_omp_1 (&gsi, ctx);
   /* During gimplification, we haven't folded statments inside offloading
-     regions (gimplify.c:maybe_fold_stmt); do that now.  */
-  if (target_nesting_level)
+     or taskreg regions (gimplify.c:maybe_fold_stmt); do that now.  */
+  if (target_nesting_level || taskreg_nesting_level)
     for (gsi = gsi_start (*body); !gsi_end_p (gsi); gsi_next (&gsi))
       fold_stmt (&gsi);
   input_location = saved_location;

gcc/testsuite/ChangeLog

+2015-07-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/66820
+	* gcc.dg/gomp/pr66820.c: New test.
+
 2015-07-10  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/65592

gcc/testsuite/gcc.dg/gomp/pr66820.c

+/* PR middle-end/66820 */
+/* { dg-do compile } */
+/* { dg-options "-fopenmp" } */
+
+void bar (char *);
+
+void
+foo (char **x)
+{
+#pragma omp parallel for
+  for (int i = 0; i < 16; i++)
+    {
+      char y[50];
+      __builtin_strcpy (y, x[i]);
+      __builtin_strcat (y, "foo");
+      bar (y);
+    }
+}