[Bug rtl-optimization/85342] [8 Regression] ICE: SIGSEGV in copyprop_hardreg_forward_1 (regcprop.c:995) with -O2 -mavx512vl

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85342

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Apr 12 08:39:50 2018
New Revision: 259338

URL: https://gcc.gnu.org/viewcvs?rev=259338&root=gcc&view=rev
Log:
        PR rtl-optimization/85342
        * regcprop.c (copyprop_hardreg_forward_1): Remove replaced array, use
        a bool scalar var inside of the loop instead.  Don't try to update
        recog_data.operand after failed apply_change_group.

        * gcc.target/i386/pr85342.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr85342.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/regcprop.c
    trunk/gcc/testsuite/ChangeLog