re PR tree-optimization/82374 (#pragma GCC optimize is not applied to openmp-generated functions)

	PR tree-optimization/82374
	* omp-low.c (create_omp_child_function): Copy DECL_ATTRIBUTES,
	DECL_FUNCTION_SPECIFIC_OPTIMIZATION,
	DECL_FUNCTION_SPECIFIC_TARGET and DECL_FUNCTION_VERSIONED from
	current_function_decl to the new decl.

	* gcc.dg/gomp/pr82374.c: New test.

From-SVN: r253395

gcc/ChangeLog

+2017-10-04  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/82374
+	* omp-low.c (create_omp_child_function): Copy DECL_ATTRIBUTES,
+	DECL_FUNCTION_SPECIFIC_OPTIMIZATION,
+	DECL_FUNCTION_SPECIFIC_TARGET and DECL_FUNCTION_VERSIONED from
+	current_function_decl to the new decl.
+
 2017-10-03  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	* config/rs6000/rs6000-builtin.def (BU_FLOAT128_2_HW): Define new

gcc/omp-low.c

@@ -1626,6 +1626,14 @@ create_omp_child_function (omp_context *ctx, bool task_copy)
   DECL_CONTEXT (decl) = NULL_TREE;
   DECL_INITIAL (decl) = make_node (BLOCK);
   BLOCK_SUPERCONTEXT (DECL_INITIAL (decl)) = decl;
+  DECL_ATTRIBUTES (decl) = DECL_ATTRIBUTES (current_function_decl);
+  DECL_FUNCTION_SPECIFIC_OPTIMIZATION (decl)
+    = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (current_function_decl);
+  DECL_FUNCTION_SPECIFIC_TARGET (decl)
+    = DECL_FUNCTION_SPECIFIC_TARGET (current_function_decl);
+  DECL_FUNCTION_VERSIONED (decl)
+    = DECL_FUNCTION_VERSIONED (current_function_decl);
+
   if (omp_maybe_offloaded_ctx (ctx))
     {
       cgraph_node::get_create (decl)->offloadable = 1;

gcc/testsuite/ChangeLog

+2017-10-04  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/82374
+	* gcc.dg/gomp/pr82374.c: New test.
+
 2017-10-04  Richard Biener  <rguenther@suse.de>
 
 	* gfortran.dg/graphite/id-17.f: For ilp32 allow graphite codegen

gcc/testsuite/gcc.dg/gomp/pr82374.c

+/* PR tree-optimization/82374 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-tree-vectorize -fdump-tree-vect-details" } */
+/* { dg-additional-options "-mavx -mno-avx2" { target i?86-*-* x86_64-*-* } } */
+/* { dg-additional-options "-mvsx" { target powerpc_vsx_ok } } */
+
+#define SIZE (1024 * 1024 * 1024)
+
+float a[SIZE];
+float b[SIZE];
+float c[SIZE];
+float d[SIZE];
+
+__attribute__((optimize ("O2", "tree-vectorize"))) void
+foo (void)
+{
+  int i;
+#pragma omp parallel for
+  for (i = 0; i < SIZE; i++)
+    c[i] = a[i] + b[i];
+}
+
+__attribute__((optimize ("O2", "tree-vectorize"))) void
+bar (void)
+{
+  int i;
+  for (i = 0; i < SIZE; i++)
+    d[i] = a[i] + b[i];
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target { { i?86-*-* x86_64-*-* } || { powerpc_vsx_ok } } } } } */