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re PR target/80310 (Bogus -Wpsabi warning with -fsanitize=signed-integer-overflow)

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PR target/80310
	* tree-nvr.c: Include internal-fn.h.
	(pass_return_slot::execute): Ignore internal calls without
	direct optab.

	* c-c++-common/ubsan/pr80310.c: New test.

From-SVN: r246699
This commit is contained in:
Jakub Jelinek 2017-04-05 07:25:18 +02:00 committed by Jakub Jelinek
parent 451522116c
commit 36f896c772
4 changed files with 31 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2017-04-05 Jakub Jelinek <jakub@redhat.com>
PR target/80310
* tree-nvr.c: Include internal-fn.h.
(pass_return_slot::execute): Ignore internal calls without
direct optab.
2017-04-04 Jakub Jelinek <jakub@redhat.com>
Richard Biener <rguenther@suse.de>

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2017-04-05 Jakub Jelinek <jakub@redhat.com>
PR target/80310
* c-c++-common/ubsan/pr80310.c: New test.
2017-04-04 Jakub Jelinek <jakub@redhat.com>
PR c++/80297

12
gcc/testsuite/c-c++-common/ubsan/pr80310.c Normal file
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@ -0,0 +1,12 @@
/* PR target/80310 */
/* { dg-do compile } */
/* { dg-options "-O2 -fsanitize=signed-integer-overflow" } */
/* { dg-additional-options "-mno-avx" { target i?86-*-* x86_64-*-* } } */
typedef int V __attribute__((vector_size (32)));
void
foo (V *a, V *b, V *c)
{
*a = *b + *c; /* { dg-bogus "AVX vector return without AVX enabled changes the ABI" "" { target i?86-*-* x86_64-*-* } } */
}

7
gcc/tree-nrv.c
View File

@ -28,6 +28,7 @@ along with GCC; see the file COPYING3. If not see
#include "tree-pretty-print.h"
#include "gimple-iterator.h"
#include "gimple-walk.h"
#include "internal-fn.h"
/* This file implements return value optimizations for functions which
return aggregate types.
@ -377,6 +378,12 @@ pass_return_slot::execute (function *fun)
if (stmt
&& gimple_call_lhs (stmt)
&& !gimple_call_return_slot_opt_p (stmt)
/* Ignore internal functions without direct optabs,
those are expanded specially and aggregate_value_p
on their result might result in undesirable warnings
with some backends. */
&& (!gimple_call_internal_p (stmt)
|| direct_internal_fn_p (gimple_call_internal_fn (stmt)))
&& aggregate_value_p (TREE_TYPE (gimple_call_lhs (stmt)),
gimple_call_fndecl (stmt)))
{