grub-lakitu/asm-tests/powerpc.S - cos/cobble - Git at Google

 /* clang <= 3.3 doesn't handle most of ppc assembly, not even inline assembly
    used by gcrypt */
 /* Cache invalidation loop is a fair test.  */
 	li 5, 0
 1:	icbi 5, 3
 	addi 5, 5, 32
 	cmpw 5, 4
 	blt 1b
	/* clang <= 3.3 doesn't handle most of ppc assembly, not even inline assembly
	used by gcrypt */
	/* Cache invalidation loop is a fair test. */
	li 5, 0
	1: icbi 5, 3
	addi 5, 5, 32
	cmpw 5, 4
	blt 1b