2012-11-22  Dmitry Vyukov  <dvyukov@google.com>
	    Wei Mi  <wmi@google.com>

	* builtins.def (DEF_SANITIZER_BUILTIN): Define tsan builtins. 
	* sanitizer.def: Ditto. 
	* Makefile.in (tsan.o): Add tsan.o target. 
	(BUILTINS_DEF): Add sanitizer.def.
	* passes.c (init_optimization_passes): Add tsan passes.
	* tree-pass.h (register_pass_info): Ditto.
	* toplev.c (compile_file): Ditto. 
	* doc/invoke.texi: Document tsan related options.
	* gcc.c (LINK_COMMAND_SPEC): Add LIBTSAN_SPEC in link command if
	-fsanitize=thread.
	* tsan.c: New file about tsan.
	* tsan.h: Ditto.
	* common.opt: Add -fsanitize=thread.


Co-Authored-By: Wei Mi <wmi@google.com>

From-SVN: r193736