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irsimilaritycandidate
2020 Sep 01
2
[RFC] Framework for Finding and Using Similarity at the IR Level
...gister in one candidate to each register in another. If this mapping is found, then the two candidates are performing the same operations on a given set of inputs and are structurally similar. For example:
%1 = add %2, %3
%4 = add %1, %2
Is equivalent to
%a = add %b, %c
%d = add %b, %a
And the IRSimilarityCandidates containing these sections of code would be considered structurally similar. But
%1 = add %2, %3
%4 = add %1, %2
Is not equivalent to
%a = add %b, %c
%d = add %a, %e.
Since the use of %2 in the first section does not match the use of %b in the second. So the IRSimilarityCandidates containing the...