[Bug target/48986] Missed optimization in atomic decrement on x86/x64

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48986

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-17 07:38:03 UTC ---
Author: jakub
Date: Tue May 17 07:37:59 2011
New Revision: 173816

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173816
Log:
    PR target/48986
    * config/i386/sync.md (sync_old_add<mode>): Relax operand 2
    predicate to allow CONST_INT.
    (*sync_old_add_cmp<mode>): New insn and peephole2 for it.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sync.md