[Bug rtl-optimization/59278] combine does not replace matched insn

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59278

--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Mon Dec  1 23:48:26 2014
New Revision: 218250

URL: https://gcc.gnu.org/viewcvs?rev=218250&root=gcc&view=rev
Log:
    PR rtl-optimization/59278
    combine (reg_dead_at_p): Consider REG_UNUSED notes.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c