[PATCH] Enable GCC support for TSXLDTRK

[hongtao]

Uros Bizjak <ubizjak@gmail.com> writes:

Ping.

> On Wed, Apr 1, 2020 at 9:28 AM Hongtao Liu <crazylht@gmail.com> wrote:
>>
>> On Wed, Apr 1, 2020 at 3:32 PM Hongtao Liu <crazylht@gmail.com> wrote:
>> >
>> > Hi:
>> >   This patch is about to enable GCC support for TSXLDTRK which would
>> > be in GLC. There's only 2 instructions: XRESLDTRK, XSUSLDTRK, more
>> > details please
>> > refer to https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf
>> >   I know it's stage4 right now, and patches are approved only for bug
>> > fixed, but since many users prefer to use release version other than
>> > build from trunk, i'd like to see this patch land on GCC10, after
>> > all it's only 2 instructions, without any significant changes.
>> >
>> >   Bootstrap ok, regression test on i386/x86 backend is ok.
>
> No, this should wait for gcc-11.
>
> Uros.
>
>> > gcc/Changelog
>> >         * common/config/i386/i386-common.c (OPTION_MASK_ISA2_TSXLDTRK_SET,
>> >         OPTION_MASK_ISA2_TSXLDTRK_UNSET): New macros.
>> >         * config.gcc: Add tsxldtrkintrin.h to extra_headers.
>> >         * config/i386/driver-i386.c (host_detect_local_cpu): Detect
>> >         TSXLDTRK.
>> >         * config/i386/i386-builtin.def: Add new builtins.
>> >         * config/i386/i386-c.c (ix86_target_macros_internal): Define
>> >         __TSXLDTRK__.
>> >         * config/i386/i386-options.c (ix86_target_string): Add
>> >         -mtsxldtrk.
>> >         * config/i386/i386.h (TARGET_TSXLDTRK, TARGET_TSXLDTRK_P):
>> >         New.
>> >         * config/i386/i386.md (define_c_enum "unspec"): Add
>> >         UNSPECV_SUSLDTRK, UNSPECV_RESLDTRK.
>> >         (TSXLDTRK): New define_int_iterator.
>> >         ("<tsxldtrk>"): New define_insn.
>> >         * config/i386/i386.opt: Add -mtsxldtrk.
>> >         * config/i386/immintrin.h: Include tsxldtrkintrin.h.
>> >         * config/i386/tsxldtrkintrin.h: New.
>> >         * doc/invoke.texi: Document -mtsxldtrk.
>> >
>> > gcc/testsuite/Changelog
>> >         * g++.dg/other/i386-2.c: Add -mtsxldtrk.
>> >         * g++.dg/other/i386-3.c: Likewise.
>> >         * gcc.target/i386/sse-12.c: Likewise.
>> >         * gcc.target/i386/sse-13.c: Likewise.
>> >         * gcc.target/i386/sse-14.c: Likewise.
>> >         * gcc.target/i386/sse-22.c: Likewsie.
>> >         * gcc.target/i386/sse-23.c: Likewise.
>> >         * gcc.target/i386/tsxldtrk-1.c: New test.
>> >
>> > --
>> > BR,
>> > Hongtao
>>
>> Add patch.
>>
>> --
>> BR,
>> Hongtao