re PR middle-end/60092 (posix_memalign not recognized to derive alias and alignment...

re PR middle-end/60092 (posix_memalign not recognized to derive alias and alignment info)

2014-04-28  Richard Biener  <rguenther@suse.de>

	PR middle-end/60092
	* builtins.def (DEF_C11_BUILTIN): Add.
	(BUILT_IN_ALIGNED_ALLOC): Likewise.
	* coretypes.h (enum function_class): Add function_c11_misc.
	* tree-ssa-alias.c (ref_maybe_used_by_call_p_1): Handle
	BUILT_IN_ALIGNED_ALLOC like BUILT_IN_MALLOC.
	(call_may_clobber_ref_p_1): Likewise.
	* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Likewise.
	(mark_all_reaching_defs_necessary_1): Likewise.
	(propagate_necessity): Likewise.
	(eliminate_unnecessary_stmts): Likewise.
	* tree-ssa-ccp.c (evaluate_stmt): Handle BUILT_IN_ALIGNED_ALLOC.

	ada/
	* gcc-interface/utils.c: Define flag_isoc11.

	lto/
	* lto-lang.c: Define flag_isoc11.

	* gcc.dg/tree-ssa/alias-32.c: New testcase.
	* gcc.dg/vect/pr60092.c: Likewise.

From-SVN: r209863