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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/109504] [12/13/14 Regression] Compilation fails with
 pragma GCC target sse4.1 and immintrin.h
Date: Wed, 19 Jul 2023 01:36:11 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109504

--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:9a19fa8b616f83474c35cc5b34a3865073ced829

commit r14-2628-g9a19fa8b616f83474c35cc5b34a3865073ced829
Author: liuhongt <hongtao.liu@intel.com>
Date:   Tue Apr 18 14:53:04 2023 +0800

    Support type _Float16/__bf16 independent of SSE2.

    Enable _Float16 and __bf16 all the time but issue errors when the
    types are used in conversion, unary operation, binary operation,
    parameter passing or value return when TARGET_SSE2 is not available.

    Also undef macros which are used by libgcc/libstdc++ to check the
    backend support of the _Float16/__bf16 types when TARGET_SSE2 is not
    available.

    gcc/ChangeLog:

            PR target/109504
            * config/i386/i386-builtins.cc
            (ix86_register_float16_builtin_type): Remove TARGET_SSE2.
            (ix86_register_bf16_builtin_type): Ditto.
            * config/i386/i386-c.cc (ix86_target_macros): When TARGET_SSE2
            isn't available, undef the macros which are used to check the
            backend support of the _Float16/__bf16 types when building
            libstdc++ and libgcc.
            * config/i386/i386.cc (construct_container): Issue errors for
            HFmode/BFmode when TARGET_SSE2 is not available.
            (function_value_32): Ditto.
            (ix86_scalar_mode_supported_p): Remove TARGET_SSE2 for
HFmode/BFmode.
            (ix86_libgcc_floating_mode_supported_p): Ditto.
            (ix86_emit_support_tinfos): Adjust codes.
            (ix86_invalid_conversion): Return diagnostic message string
            when there's conversion from/to BF/HFmode w/o TARGET_SSE2.
            (ix86_invalid_unary_op): New function.
            (ix86_invalid_binary_op): Ditto.
            (TARGET_INVALID_UNARY_OP): Define.
            (TARGET_INVALID_BINARY_OP): Define.
            * config/i386/immintrin.h [__SSE2__]: Remove for fp16/bf16
            related instrinsics header files.
            * config/i386/i386.h (VALID_SSE2_TYPE_MODE): New macro.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr109504.c: New test.
            * gcc.target/i386/sse2-bfloat16-1.c: Adjust error info.
            * gcc.target/i386/sse2-float16-1.c: Ditto.
            * gcc.target/i386/sse2-float16-4.c: New test.
            * gcc.target/i386/sse2-float16-5.c: New test.
            * g++.target/i386/float16-1.C: Adjust error info.

    libgcc/ChangeLog:

            * config/i386/t-softfp: Add -msse2 to libbid HFtype related
            files.=