[Bug gas/24352] Incorrect EVEX optimization

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=24352

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by H.J. Lu <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7b1d7ca194544554f7d41aea7fdf7a69c232f15d

commit 7b1d7ca194544554f7d41aea7fdf7a69c232f15d
Author: H.J. Lu <address@hidden>
Date:   Tue Mar 19 21:10:21 2019 +0800

    x86: Correct EVEX to 128-bit EVEX optimization

    Since not all AVX512F processors support AVX512VL, we can optimize
    512-bit EVEX to 128-bit EVEX encoding for upper 16 vector registers
    only when AVX512VL is enabled explicitly at command-line or via
    ".arch .avx512vl" directive.

        PR gas/24352
        * config/tc-i386.c (optimize_encoding): Check only
        cpu_arch_flags.bitfield.cpuavx512vl.
        * testsuite/gas/i386/i386.exp: Run x86-64-optimize-2b.
        * testsuite/gas/i386/x86-64-optimize-2.d: Revert the last
        change.
        * testsuite/gas/i386/x86-64-optimize-2b.d: New file.
        * testsuite/gas/i386/x86-64-optimize-2b.s: Likewise.

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