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Subject: [Bug target/99744] __attribute__ ((target("general-regs-only")))
 doesn't work with GPR intrinsics
Date: Thu, 05 Aug 2021 13:27:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99744

--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:72264a639729a5dcc21dbee304717ce22b338bfd

commit r12-2765-g72264a639729a5dcc21dbee304717ce22b338bfd
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sat Jul 17 07:44:45 2021 -0700

    <x86gprintrin.h>: Add pragma GCC target("general-regs-only")

    1. Intrinsics in <x86gprintrin.h> only require GPR ISAs.  Add

     #if defined __MMX__ || defined __SSE__
     #pragma GCC push_options
     #pragma GCC target("general-regs-only")
     #define __DISABLE_GENERAL_REGS_ONLY__
     #endif

    and

     #ifdef __DISABLE_GENERAL_REGS_ONLY__
     #undef __DISABLE_GENERAL_REGS_ONLY__
     #pragma GCC pop_options
     #endif /* __DISABLE_GENERAL_REGS_ONLY__ */

    to <x86gprintrin.h> to disable non-GPR ISAs so that they can be used in
    functions with __attribute__ ((target("general-regs-only"))).
    2. When checking always_inline attribute, if callee only uses GPRs,
    ignore MASK_80387 since enable MASK_80387 in caller has no impact on
    callee inline.

    gcc/

            PR target/99744
            * config/i386/i386.c (ix86_can_inline_p): Ignore MASK_80387 if
            callee only uses GPRs.
            * config/i386/ia32intrin.h: Revert commit 5463cee2770.
            * config/i386/serializeintrin.h: Revert commit 71958f740f1.
            * config/i386/x86gprintrin.h: Add
            #pragma GCC target("general-regs-only") and #pragma GCC pop_opt=
ions
            to disable non-GPR ISAs.

    gcc/testsuite/

            PR target/99744
            * gcc.target/i386/pr99744-3.c: New test.
            * gcc.target/i386/pr99744-4.c: Likewise.
            * gcc.target/i386/pr99744-5.c: Likewise.
            * gcc.target/i386/pr99744-6.c: Likewise.
            * gcc.target/i386/pr99744-7.c: Likewise.
            * gcc.target/i386/pr99744-8.c: Likewise.=