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backport: re PR c/68960 (__attribute__ ((aligned ())) is ignored for OpenMP private variables) 

Backported from mainline
	2016-01-07  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/68960
	* gimple-expr.c (copy_var_decl): If var has DECL_USER_ALIGN set, copy
	it and DECL_ALIGN too.

	* testsuite/libgomp.c/pr68960.c: New test.

From-SVN: r233288
This commit is contained in:
Jakub Jelinek 2016-02-10 19:28:44 +01:00 committed by Jakub Jelinek
parent 978076bb5d
commit b2b9c1863b
4 changed files with 44 additions and 0 deletions
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6
gcc/ChangeLog
View File

@ -1,6 +1,12 @@
2016-02-10 Jakub Jelinek <jakub@redhat.com>
Backported from mainline
2016-01-07 Jakub Jelinek <jakub@redhat.com>
PR middle-end/68960
* gimple-expr.c (copy_var_decl): If var has DECL_USER_ALIGN set, copy
it and DECL_ALIGN too.
2016-01-01 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/69055

5
gcc/gimple-expr.c
View File

@ -387,6 +387,11 @@ copy_var_decl (tree var, tree name, tree type)
TREE_USED (copy) = 1;
DECL_SEEN_IN_BIND_EXPR_P (copy) = 1;
DECL_ATTRIBUTES (copy) = DECL_ATTRIBUTES (var);
if (DECL_USER_ALIGN (var))
{
DECL_ALIGN (copy) = DECL_ALIGN (var);
DECL_USER_ALIGN (copy) = 1;
}
return copy;
}

8
libgomp/ChangeLog
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@ -1,3 +1,11 @@
2016-02-10 Jakub Jelinek <jakub@redhat.com>
Backported from mainline
2016-01-07 Jakub Jelinek <jakub@redhat.com>
PR middle-end/68960
* testsuite/libgomp.c/pr68960.c: New test.
2016-01-26 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/69110

25
libgomp/testsuite/libgomp.c/pr68960.c Normal file
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@ -0,0 +1,25 @@
/* PR middle-end/68960 */
/* { dg-do run } */
int
main ()
{
int temp[257] __attribute__ ((aligned (256))) = { 0 };
#pragma omp parallel private (temp) num_threads (2)
{
int *p = &temp[0];
asm volatile ("" : "+g" (p));
if (((__UINTPTR_TYPE__) p) & 255)
__builtin_abort ();
}
#pragma omp parallel num_threads (2)
#pragma omp single
#pragma omp task firstprivate (temp)
{
int *p = &temp[0];
asm volatile ("" : "+g" (p));
if (((__UINTPTR_TYPE__) p) & 255)
__builtin_abort ();
}
return 0;
}