Refactor common code into new maybe_fold_stmt function.

	gcc/
	* gimplify.c (gimplify_call_expr, gimplify_modify_expr): Move
	common code...
	(maybe_fold_stmt): ... into this new function.
	* omp-low.c (lower_omp): Update comment.

From-SVN: r207724

gcc/ChangeLog

 2014-02-12  Thomas Schwinge  <thomas@codesourcery.com>
 
+	* gimplify.c (gimplify_call_expr, gimplify_modify_expr): Move
+	common code...
+	(maybe_fold_stmt): ... into this new function.
+	* omp-low.c (lower_omp): Update comment.
+
 	* omp-low.c (lower_omp_target): Add clobber for sizes array, after
 	last use.
 

gcc/gimplify.c

@@ -2191,6 +2191,20 @@ 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 STMT inside ORT_TARGET, because 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)
+      return false;
+  return fold_stmt (gsi);
+}
+
 /* Gimplify the CALL_EXPR node *EXPR_P into the GIMPLE sequence PRE_P.
    WANT_VALUE is true if the result of the call is desired.  */
 
@@ -2424,14 +2438,7 @@ gimplify_call_expr (tree *expr_p, gimple_seq *pre_p, bool want_value)
       notice_special_calls (call);
       gimplify_seq_add_stmt (pre_p, call);
       gsi = gsi_last (*pre_p);
-      /* Don't fold stmts inside of target construct.  We'll do it
-	 during omplower pass instead.  */
-      struct gimplify_omp_ctx *ctx;
-      for (ctx = gimplify_omp_ctxp; ctx; ctx = ctx->outer_context)
-	if (ctx->region_type == ORT_TARGET)
-	  break;
-      if (ctx == NULL)
-	fold_stmt (&gsi);
+      maybe_fold_stmt (&gsi);
       *expr_p = NULL_TREE;
     }
   else
@@ -4579,14 +4586,7 @@ gimplify_modify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
 
   gimplify_seq_add_stmt (pre_p, assign);
   gsi = gsi_last (*pre_p);
-  /* Don't fold stmts inside of target construct.  We'll do it
-     during omplower pass instead.  */
-  struct gimplify_omp_ctx *ctx;
-  for (ctx = gimplify_omp_ctxp; ctx; ctx = ctx->outer_context)
-    if (ctx->region_type == ORT_TARGET)
-      break;
-  if (ctx == NULL)
-    fold_stmt (&gsi);
+  maybe_fold_stmt (&gsi);
 
   if (want_value)
     {

gcc/omp-low.c

@@ -10134,9 +10134,8 @@ lower_omp (gimple_seq *body, omp_context *ctx)
   gimple_stmt_iterator gsi;
   for (gsi = gsi_start (*body); !gsi_end_p (gsi); gsi_next (&gsi))
     lower_omp_1 (&gsi, ctx);
-  /* Inside target region we haven't called fold_stmt during gimplification,
-     because it can break code by adding decl references that weren't in the
-     source.  Call fold_stmt now.  */
+  /* During gimplification, we have not always invoked fold_stmt
+     (gimplify.c:maybe_fold_stmt); call it now.  */
   if (target_nesting_level)
     for (gsi = gsi_start (*body); !gsi_end_p (gsi); gsi_next (&gsi))
       fold_stmt (&gsi);