[Bug middle-end/85414] [8 Regression] ICE: in ix86_expand_prologue, at config/i386/i386.c:13810 with -Og -fgcse

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85414

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Apr 25 13:10:01 2018
New Revision: 259649

URL: https://gcc.gnu.org/viewcvs?rev=259649&root=gcc&view=rev
Log:
        PR middle-end/85414
        * simplify-rtx.c (simplify_unary_operation_1) <case SIGN_EXTEND,
        case ZERO_EXTEND>: Pass SUBREG_REG (op) rather than op to
        gen_lowpart_no_emit.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expr.c
    trunk/gcc/simplify-rtx.c