There used to be multi-instruction operations that would use src[] twice,
which is why we couldn't do some optimizations on them. This is no longer
the case.
total instructions in shared programs: 77973 -> 77969 (-0.01%)
instructions in affected programs: 84 -> 80 (-4.76%)
total estimated cycles in shared programs: 234165 -> 234157 (-0.00%)
estimated cycles in affected programs: 92 -> 84 (-8.70%)
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