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Subject: [Bug target/101989] Fail to optimize (a & b) | (c & ~b) to vpternlog
 instruction.
Date: Tue, 24 Aug 2021 09:45:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101989

--- Comment #3 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:6ddb30f941a44bd528904558673ab35394565f08

commit r12-3108-g6ddb30f941a44bd528904558673ab35394565f08
Author: liuhongt <hongtao.liu@intel.com>
Date:   Fri Aug 20 15:30:40 2021 +0800

    Optimize (a & b) | (c & ~b) to vpternlog instruction.

    Also optimize below 3 forms to vpternlog, op1, op2, op3 are
    register_operand or unary_p as (not reg)

    A: (any_logic (any_logic op1 op2) op3)
    B: (any_logic (any_logic op1 op2) (any_logic op3 op4)) op3/op4 should
    be equal to op1/op2
    C: (any_logic (any_logic (any_logic:op1 op2) op3) op4) op3/op4 should
    be equal to op1/op2

    gcc/ChangeLog:

            PR target/101989
            * config/i386/i386.c (ix86_rtx_costs): Define cost for
            UNSPEC_VTERNLOG.
            * config/i386/i386.h (STRIP_UNARY): New macro.
            * config/i386/predicates.md (reg_or_notreg_operand): New
            predicate.
            * config/i386/sse.md (*<avx512>_vternlog<mode>_all): New
define_insn.
            (*<avx512>_vternlog<mode>_1): New pre_reload
            define_insn_and_split.
            (*<avx512>_vternlog<mode>_2): Ditto.
            (*<avx512>_vternlog<mode>_3): Ditto.
            (any_logic1,any_logic2): New code iterator.
            (logic_op): New code attribute.
            (ternlogsuffix): Extend to VNxDF and VNxSF.

    gcc/testsuite/ChangeLog:

            PR target/101989
            * gcc.target/i386/pr101989-1.c: New test.
            * gcc.target/i386/pr101989-2.c: New test.
            * gcc.target/i386/avx512bw-shiftqihi-constant-1.c: Adjust testc=
ase.=