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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/105000] New: __attribute__((target("no-sse"))) doesn't
 disable AVX/SSE ISAs in ix86_isa_flags2
Date: Mon, 21 Mar 2022 14:52:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105000

            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=20
#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=20
x.c: In function =E2=80=98foo=E2=80=99:
x.c:5:1: error: inlining failed in call to =E2=80=98always_inline=E2=80=99 =
=E2=80=98_get_ssp=E2=80=99: 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 =E2=80=98foo=E2=80=99:
x.c:5:1: error: inlining failed in call to =E2=80=98always_inline=E2=80=99 =
=E2=80=98_get_ssp=E2=80=99: 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]$=20

Is is because __attribute__((target("no-sse"))) doesn't disable AVX/SSE ISAs
in ix86_isa_flags2.=