https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105000
Bug ID: 105000
Summary: __attribute__((target("no-sse"))) doesn't disable
AVX/SSE ISAs in ix86_isa_flags2
Product: gcc
Version: 11.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: crazylht at gmail dot com
Target Milestone: ---
Target: x86-64
[hjl@gnu-tgl-3 gcc]$ cat /tmp/x.c
#include <x86gprintrin.h>
__attribute__((target("no-mmx,no-sse")))
int
foo ()
{
return _get_ssp ();
}
[hjl@gnu-tgl-3 gcc]$ ./xgcc -B./ -S -O2 x.c -mshstk -mavxvnni
x.c: In function ‘foo’:
x.c:5:1: error: inlining failed in call to ‘always_inline’ ‘_get_ssp’: target
specific option mismatch
5 | _get_ssp (void)
| ^~~~~~~~
x.c:15:10: note: called from here
15 | return _get_ssp ();
| ^~~~~~~~~~~
[hjl@gnu-tgl-3 gcc]$ ./xgcc -B./ -S -O2 x.c -mshstk -mkl
x.c: In function ‘foo’:
x.c:5:1: error: inlining failed in call to ‘always_inline’ ‘_get_ssp’: target
specific option mismatch
5 | _get_ssp (void)
| ^~~~~~~~
x.c:15:10: note: called from here
15 | return _get_ssp ();
| ^~~~~~~~~~~
[hjl@gnu-tgl-3 gcc]$
Is is because __attribute__((target("no-sse"))) doesn't disable AVX/SSE ISAs
in ix86_isa_flags2.
