asan.c (instrument_mem_region_access): Don't instrument if base doesn't have pointer...

asan.c (instrument_mem_region_access): Don't instrument if base doesn't have pointer type or len integral type.

	* asan.c (instrument_mem_region_access): Don't instrument
	if base doesn't have pointer type or len integral type.
	Add cast if len doesn't have size_t compatible type.
	(instrument_builtin_call): Don't instrument BUILT_IN_ATOMIC_LOAD,
	BUILT_IN_ATOMIC_TEST_AND_SET, BUILT_IN_ATOMIC_CLEAR,
	BUILT_IN_ATOMIC_EXCHANGE, BUILT_IN_ATOMIC_COMPARE_EXCHANGE
	and BUILT_IN_ATOMIC_STORE.

From-SVN: r194094