libsanitizer/
	* configure.tgt: Enable build on powerpc*-linux.

gcc/
	* config/rs6000/sysv4.h (TARGET_ASAN_SHADOW_OFFSET): Define.
	* config/rs6000/rs6000.c (rs6000_asan_shadow_offset): New function.
	* config/rs6000/rs6000.h (FRAME_GROWS_DOWNWARD): Disable if using ASAN.

From-SVN: r194273