[Bug rtl-optimization/52714] [4.8 regression] ICE in fixup_reorder_chain, at cfglayout.c:880

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52714

--- Comment #16 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Wed Dec  3 06:00:54 2014
New Revision: 218302

URL: https://gcc.gnu.org/viewcvs?rev=218302&root=gcc&view=rev
Log:
    PR rtl-optimization/52714
    * combine.c (try_combine): Allow combining two insns into two
    new insns if at least one of those is a noop.

gcc/testsuite/
    * gcc.target/m68k/pr52714.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/m68k/pr52714.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/testsuite/ChangeLog