[Bug rtl-optimization/84989] [8 Regression] _mm512_broadcast_f32x4 triggers ICE in simplify_const_unary_operation, at simplify-rtx.c:1731

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84989

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 21 10:13:29 2018
New Revision: 258709

URL: https://gcc.gnu.org/viewcvs?rev=258709&root=gcc&view=rev
Log:
        PR rtl-optimization/84989
        * simplify-rtx.c (simplify_unary_operation_1): Don't try to simplify
        VEC_DUPLICATE with scalar result mode.

        * gcc.target/i386/pr84989.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr84989.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/simplify-rtx.c
    trunk/gcc/testsuite/ChangeLog