[Bug target/54700] Optimize away x<0 as mask argument of a blend.

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54700

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 29 14:33:27 2018
New Revision: 266621

URL: https://gcc.gnu.org/viewcvs?rev=266621&root=gcc&view=rev
Log:
        PR target/54700
        * config/i386/sse.md (ssebytemode): Add V16SI, V8SI and V4SI entries.
        (ssefltmodesuffix, ssefltvecmode): New define_mode_attrs.
        (*<sse4_1>_blendv<ssemodesuffix><avxsizesuffix>_lt,
        *<sse4_1>_blendv<ssefltmodesuffix><avxsizesuffix>_ltint,
        *<sse4_1_avx2>_pblendvb_lt): New define_insns.

        * g++.target/i386/sse4_1-pr54700-1.C: New test.
        * g++.target/i386/sse4_1-pr54700-2.C: New test.
        * g++.target/i386/avx-pr54700-1.C: New test.
        * g++.target/i386/avx-pr54700-2.C: New test.
        * g++.target/i386/avx2-pr54700-1.C: New test.
        * g++.target/i386/avx2-pr54700-2.C: New test.
        * g++.target/i386/sse4_1-check.h: New file.
        * g++.target/i386/avx-check.h: New file.
        * g++.target/i386/avx2-check.h: New file.
        * g++.target/i386/m128-check.h: New file.
        * g++.target/i386/m256-check.h: New file.
        * g++.target/i386/avx-os-support.h: New file.

Added:
    trunk/gcc/testsuite/g++.target/i386/avx-check.h
    trunk/gcc/testsuite/g++.target/i386/avx-os-support.h
    trunk/gcc/testsuite/g++.target/i386/avx-pr54700-1.C
    trunk/gcc/testsuite/g++.target/i386/avx-pr54700-2.C
    trunk/gcc/testsuite/g++.target/i386/avx2-check.h
    trunk/gcc/testsuite/g++.target/i386/avx2-pr54700-1.C
    trunk/gcc/testsuite/g++.target/i386/avx2-pr54700-2.C
    trunk/gcc/testsuite/g++.target/i386/m128-check.h
    trunk/gcc/testsuite/g++.target/i386/m256-check.h
    trunk/gcc/testsuite/g++.target/i386/sse4_1-check.h
    trunk/gcc/testsuite/g++.target/i386/sse4_1-pr54700-1.C
    trunk/gcc/testsuite/g++.target/i386/sse4_1-pr54700-2.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sse.md
    trunk/gcc/testsuite/ChangeLog