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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168788
138bc75d-0d04-0410-961f-
82ee72b054a4