[Bug target/82673] [8 Regression] ICE in ix86_finalize_stack_frame_flags at gcc/config/i386/i386.c:12695

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82673

--- Comment #4 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Mon Oct 23 15:49:19 2017
New Revision: 254013

URL: https://gcc.gnu.org/viewcvs?rev=254013&root=gcc&view=rev
Log:
i386: Skip DF_REF_INSN if DF_REF_INSN_INFO is false

We should check DF_REF_INSN_INFO before accessing DF_REF_INSN.

gcc/

        PR target/82673
        * config/i386/i386.c (ix86_finalize_stack_frame_flags): Skip
        DF_REF_INSN if DF_REF_INSN_INFO is false.

gcc/testsuite/

        PR target/82673
        * gcc.target/i386/pr82673.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr82673.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog