Compute copy propagation info (CPs).
Very similar to AEs (the same code is used).
Using RDs for copy propagation is WRONG!
That is, set of copy statements still valid.
Bin = the set of CPs reaching the beginning of B.
Bout = the set of CPs reaching the end of B.
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Compute copy propagation info (CPs). Very similar to AEs (the same code is used). Using RDs for copy propagation is WRONG! That is, set of copy statements still valid. Bin = the set of CPs reaching the beginning of B. Bout = the set of CPs reaching the end of B.