2008-12-04  Richard Guenther  <rguenther@suse.de>

	PR middle-end/36509
	PR c++/38334
	* Makefile.in (tree-ssa-alias-warnings.o): Remove.
	(tree-ssa-structalias.o): Remove errors.h dependency.
	(tree-ssa-reassoc.o): Likewise.
	* tree-ssa-reassoc.c: Do not include errors.h.
	* tree-ssa-alias-warnings.c: Remove.
	* tree-ssa-alias.c (compute_may_aliases): Remove call to
	strict_aliasing_warning_backend.
	* tree-ssa-structalias.c (emit_pointer_definition): New function.
	(emit_alias_warning): Likewise.
	(set_uids_in_ptset): Warn for clear cases of type-punning.
	* tree-inline.c (remap_gimple_op_r): Preserve TREE_NO_WARNING
	on INDIRECT_REFs.

	cp/
	* typeck.c (get_member_function_from_ptrfunc): Mark the vtbl
	pointer access with TREE_NO_WARNING.

	* gcc.dg/Wstrict-aliasing-float-ptr-int-obj.c: Adjust, remove XFAIL.
	* gcc.dg/Wstrict-aliasing-converted-assigned.c: Adjust.
	* g++.dg/warn/Wstrict-aliasing-float-ref-int-obj.C: Likewise.

From-SVN: r142437