[Bug rtl-optimization/78669] [7 Regression]: ICE: in combine_and_move_insns, at ira.c:3665 with -Os -fno-tree-ter -mavx512bw

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78669

--- Comment #5 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Mon Dec 12 13:29:48 2016
New Revision: 243551

URL: https://gcc.gnu.org/viewcvs?rev=243551&root=gcc&view=rev
Log:

        PR rtl-optimization/78669
        * ira.c (combine_and_move_insns): When deleting an insn, clear the
        replace flag for all used regs in that insn.

        PR rtl-optimization/78669
        * gcc.target/i386/pr78669.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr78669.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira.c
    trunk/gcc/testsuite/ChangeLog