.extInstruction custom0, 0x07, 0x1a, SUFFIX_COND|SUFFIX_FLAG, SYNTAX_3OP
.extInstruction custom1, 0x07, 0x1b, SUFFIX_FLAG, SYNTAX_2OP
.extCoreRegister mlx, 57, r|w, can_shortcut
.extCondCode tst, 0x10
.extAuxRegister aux_test, 0x41, r|w
custom0.tst mlx,mlx,r0
custom1 mlx,r0
lr r0, [aux_test]