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Subject: [Bug target/97194] optimize vector element set/extract at variable
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Date: Tue, 17 Nov 2020 03:31:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97194

--- Comment #22 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:287cc750b0887e86cb309d976b17c7ee95f7ad48

commit r11-5074-g287cc750b0887e86cb309d976b17c7ee95f7ad48
Author: liuhongt <hongtao.liu@intel.com>
Date:   Mon Oct 19 16:04:39 2020 +0800

    Support variable index vec_set.

    gcc/ChangeLog:

            PR target/97194
            * config/i386/i386-expand.c (ix86_expand_vector_set_var): New
function.
            * config/i386/i386-protos.h (ix86_expand_vector_set_var): New D=
ecl.
            * config/i386/predicates.md (vec_setm_operand): New predicate,
            true for const_int_operand or register_operand under TARGET_AVX=
2.
            * config/i386/sse.md (vec_set<mode>): Support both constant
            and variable index vec_set.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/avx2-vec-set-1.c: New test.
            * gcc.target/i386/avx2-vec-set-2.c: New test.
            * gcc.target/i386/avx512bw-vec-set-1.c: New test.
            * gcc.target/i386/avx512bw-vec-set-2.c: New test.
            * gcc.target/i386/avx512f-vec-set-2.c: New test.
            * gcc.target/i386/avx512vl-vec-set-2.c: New test.=