re PR lto/79061 ([LTO][ASAN] LTO plus ASAN fails with "AddressSanitizer: initialization-order-fiasco")

	PR lto/79061
gcc/

	* asan.c (get_translation_unit_decl): New function.
	(asan_add_global): Extract modules file name from globals
	TRANSLATION_UNIT_DECL in lto mode.
	* tree.c (build_translation_unit_decl): Add source location for newly
	built TRANSLATION_UNIT_DECL.

gcc/lto/

	* lto.c (lto_read_decls): accept location cache for
	TRANSLATION_UNIT_DECL.
	
gcc/testsuite/

	* gcc.dg/cpp/mi1.c: Adjust testcase.
	* gcc.dg/pch/cpp-3.c: Likewise.

From-SVN: r244581