Hi!
This patch propagates attributes, including opt and target nodes, from
the containing function to the OMP/OACC outlined region functions.
Bootstrapped/regtested on x86_64-linux and i686-linux, committed to trunk.
2017-10-04 Jakub Jelinek <ja...@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.
* gcc.dg/gomp/pr82374.c: New test.
--- gcc/omp-low.c.jj 2017-09-05 23:32:02.000000000 +0200
+++ gcc/omp-low.c 2017-10-03 12:25:13.956261522 +0200
@@ -1626,6 +1626,14 @@ create_omp_child_function (omp_context *
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/gcc.dg/gomp/pr82374.c.jj 2017-10-03 13:09:15.515879118
+0200
+++ gcc/testsuite/gcc.dg/gomp/pr82374.c 2017-10-03 13:08:56.000000000 +0200
@@ -0,0 +1,31 @@
+/* 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 } } } } } */
Jakub
