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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88808] bitwise operators on AVX512 masks fail to use the
 new mask instructions
Date: Fri, 21 Aug 2020 04:50:18 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D88808

--- Comment #4 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:388cb292a94f98a276548cd6ce01285cf36d17df

commit r11-2796-g388cb292a94f98a276548cd6ce01285cf36d17df
Author: liuhongt <hongtao.liu@intel.com>
Date:   Thu Aug 13 14:20:43 2020 +0800

    Enable bitwise operation for type mask.

    Enable operator or/xor/and/andn/not for mask register, kxnor is not
    enabled since there's no corresponding instruction for general
    registers.

    gcc/
            PR target/88808
            * config/i386/i386.c (ix86_preferred_reload_class): Allow
            QImode data go into mask registers.
            * config/i386/i386.md: (*movhi_internal): Adjust constraints
            for mask registers.
            (*movqi_internal): Ditto.
            (*anddi_1): Support mask register operations
            (*and<mode>_1): Ditto.
            (*andqi_1): Ditto.
            (*andn<mode>_1): Ditto.
            (*<code><mode>_1): Ditto.
            (*<code>qi_1): Ditto.
            (*one_cmpl<mode>2_1): Ditto.
            (*one_cmplsi2_1_zext): Ditto.
            (*one_cmplqi2_1): Ditto.
            (define_peephole2): Move constant 0/-1 directly into mask
            registers.
            * config/i386/predicates.md (mask_reg_operand): New predicate.
            * config/i386/sse.md (define_split): Add post-reload splitters
            that would convert "generic" patterns to mask patterns.
            (*knotsi_1_zext): New define_insn.

    gcc/testsuite/
            * gcc.target/i386/bitwise_mask_op-1.c: New test.
            * gcc.target/i386/bitwise_mask_op-2.c: New test.
            * gcc.target/i386/bitwise_mask_op-3.c: New test.
            * gcc.target/i386/avx512bw-pr88465.c: New testcase.
            * gcc.target/i386/avx512bw-kunpckwd-1.c: Adjust testcase.
            * gcc.target/i386/avx512bw-kunpckwd-3.c: Ditto.
            * gcc.target/i386/avx512dq-kmovb-5.c: Ditto.
            * gcc.target/i386/avx512f-kmovw-5.c: Ditto.
            * gcc.target/i386/pr55342.c: Ditto.=