# this control flow graph is irreducible # yet, we expecet the liveness analysis # to work properly and make %x live in # the block @left # # nothing should ever be live at the entry function $test() { @start %b =w copy 0 %x =w copy 10 jnz 0, @loop, @left @left jmp @inloop @loop %x1 =w add %x, 1 @inloop %b1 =w add %b, 1 @endloop jmp @loop }