r151241 - in /trunk/gcc: ChangeLog builtins.c t...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Aug 31 12:52:17 2009
New Revision: 151241

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151241
Log:
2009-08-31  Richard Guenther  <rguenther@suse.de>

	* builtins.c (fold_builtin_memory_op): Use the alias oracle
	to query if the memory regions for memmove overlap.
	* tree-ssa-alias.c (ptr_deref_may_alias_decl_p): Relax the
	asserts on pointers, instead deal with odd trees.
	(ptr_derefs_may_alias_p): Likewise.
	(refs_may_alias_p_1): Constructor bases also never alias.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/tree-ssa-alias.c