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+# 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
+}