[Bug tree-optimization/47179] [4.5/4.6 Regression] SPU: errno misoptimization around malloc call

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47179

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-14 15:02:27 UTC ---
Author: rguenth
Date: Fri Jan 14 15:02:20 2011
New Revision: 168788

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168788
Log:
2011-01-14  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/47179
    * target.def (ref_may_alias_errno): New target hook.
    * targhooks.h (default_ref_may_alias_errno): Declare.
    * targhooks.c: Include tree-ssa-alias.h and tree-flow.h.
    (default_ref_may_alias_errno): New function.
    * target.h (struct ao_ref_s): Declare.
    * tree-ssa-alias.c: Include target.h.
    (call_may_clobber_ref_p_1): Use the ref_may_alias_errno target hook.
    * Makefile.in (tree-ssa-alias.o): Adjust dependencies.
    (targhooks.o): Likewise.
    * doc/tm.texi.in (TARGET_REF_MAY_ALIAS_ERRNO): Document.
    * doc/tm.texi (TARGET_REF_MAY_ALIAS_ERRNO): Copy documentation.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/doc/tm.texi
    trunk/gcc/doc/tm.texi.in
    trunk/gcc/target.def
    trunk/gcc/target.h
    trunk/gcc/targhooks.c
    trunk/gcc/targhooks.h
    trunk/gcc/tree-ssa-alias.c