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- # an example with reducible control
- # flow graph that exposes poor
- # handling of looping constructs
- function $test() {
- @start
- %ten =w copy 10
- %dum =w copy 0 # dummy live-through temporary
- @loop
- %alt =w phi @start 0, @left %alt1, @right %alt1
- %cnt =w phi @start 100, @left %cnt, @right %cnt1
- %alt1 =w sub 1, %alt
- jnz %alt1, @right, @left
- @left
- %x =w phi @loop 10, @left %x1
- %x1 =w sub %x, 1
- %z =w copy %x
- jnz %z, @left, @loop
- @right
- %cnt1 =w sub %cnt, %ten
- jnz %cnt1, @loop, @end
- @end
- %ret =w add %cnt, %dum
- ret
- }
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