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| author | Alon Zakai <azakai@google.com> | 2022-09-13 08:39:44 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-09-13 15:39:44 +0000 |
| commit | a2773e51dabf36244234394b37e7a3c305d243ca (patch) | |
| tree | 5204bcc71f982a3784a3ad51baebf911e3cbc42e /.gitignore | |
| parent | c7967d81d2d5ed06440044d45ad52158c40ee168 (diff) | |
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OptimizeInstructions: Use min/max bits in comparisons (#5035)
When we see e.g. x < y and x has fewer bits set, we can infer a result.
Helps #5010. As mentioned there, this is one of the top superoptimizer findings.
On j2wasm it ends up removing a few hundred binary operations for example.
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