[Bug rtl-optimization/54900] write introduction incorrect wrt the C11 memory model (2)

[aldyh at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54900

--- Comment #3 from Aldy Hernandez <aldyh at gcc dot gnu.org> 2012-10-17 20:59:43 UTC ---
Author: aldyh
Date: Wed Oct 17 20:59:40 2012
New Revision: 192548

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192548
Log:
    PR rtl-optimization/54900
    * ifcvt.c (noce_can_store_speculate_p): Call
    memory_must_be_modified_in_insn_p.
    * alias.c (memory_must_be_modified_in_insn_p): New.
    (set_dest_equal_p): New.
    * rtl.h (memory_must_be_modified_in_p): Protoize.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/alias.c
    trunk/gcc/ifcvt.c
    trunk/gcc/rtl.h