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re PR sanitizer/64981 (-fsanitize=address cant expand __builtin_ia32_rdtsc)

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PR sanitizer/64981
	* builtins.c (expand_builtin): Call targetm.expand_builtin
	for BUILT_IN_MD builtins regardless of asan_intercepted_p.

	* gcc.dg/asan/pr64981.c: New test.

From-SVN: r220551
This commit is contained in:
Jakub Jelinek 2015-02-09 22:23:58 +01:00 • committed by Jakub Jelinek
parent c3e38a03df
commit d51151b2f4
4 changed files with 26 additions and 3 deletions
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6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2015-02-09 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/64981
* builtins.c (expand_builtin): Call targetm.expand_builtin
for BUILT_IN_MD builtins regardless of asan_intercepted_p.
2015-02-08 Jan Hubicka <hubicka@ucw.cz>
PR ipa/61548

6
gcc/builtins.c
View file

@ -5960,6 +5960,9 @@ expand_builtin (tree exp, rtx target, rtx subtarget, machine_mode mode,
machine_mode target_mode = TYPE_MODE (TREE_TYPE (exp));
int flags;
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
return targetm.expand_builtin (exp, target, subtarget, mode, ignore);
/* When ASan is enabled, we don't want to expand some memory/string
builtins and rely on libsanitizer's hooks. This allows us to avoid
redundant checks and be sure, that possible overflow will be detected
@ -5968,9 +5971,6 @@ expand_builtin (tree exp, rtx target, rtx subtarget, machine_mode mode,
if ((flag_sanitize & SANITIZE_ADDRESS) && asan_intercepted_p (fcode))
return expand_call (exp, target, ignore);
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
return targetm.expand_builtin (exp, target, subtarget, mode, ignore);
/* When not optimizing, generate calls to library functions for a certain
set of builtins. */
if (!optimize

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2015-02-09 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/64981
* gcc.dg/asan/pr64981.c: New test.
2015-02-09 Marek Polacek <polacek@redhat.com>
PR c/64856

12
gcc/testsuite/gcc.dg/asan/pr64981.c Normal file
View file

@ -0,0 +1,12 @@
/* PR sanitizer/64981 */
/* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
/* { dg-options "-fsanitize=address -march=x86-64" } */
int
main ()
{
__builtin_ia32_rdtsc ();
return 0;
}
/* { dg-final { scan-assembler-not "__builtin_ia32_rdtsc" } } */