* ubsan.h (struct ubsan_mismatch_data): Removed.
	(ubsan_create_data): Remove MISMATCH argument, add LOCCNT argument.
	* ubsan.c (ubsan_source_location): For unknown locations,
	pass { NULL, 0, 0 } instead of { "<unknown>", x, y }.
	(ubsan_create_data): Remove MISMATCH argument, add LOCCNT argument.
	Allow more than one location and arbitrary extra arguments passed
	in ... instead of through MISMATCH pointer.
	(ubsan_instrument_unreachable, ubsan_expand_bounds_ifn,
	ubsan_expand_null_ifn, ubsan_build_overflow_builtin,
	instrument_bool_enum_load, ubsan_instrument_float_cast): Adjust
	callers.
c-family/
	* c-ubsan.c (ubsan_instrument_division, ubsan_instrument_shift,
	ubsan_instrument_vla, ubsan_instrument_return): Adjust
	ubsan_create_data callers.
	(ubsan_instrument_bounds): Don't emit UBSAN_BOUNDS at all if
	index is constant or BIT_AND_EXPR with constant mask and is
	small enough for the bound.
	* c-gimplify.c (ubsan_walk_array_refs_r): For ADDR_EXPR of
	ARRAY_REF, make sure the inner ARRAY_REF is not walked again.

From-SVN: r215117