| commit | f668a08e005962f9f68d7586f99fc431dbed9a88 | [log] [tgz] |
|---|---|---|
| author | Craig Topper <craig.topper@sifive.com> | Mon Feb 19 10:45:11 2024 -0800 |
| committer | GitHub <noreply@github.com> | Mon Feb 19 10:45:11 2024 -0800 |
| tree | 1e27c254eee23d0fca08668d15ece53777459c84 | |
| parent | 0ca74c345899e2c4846c696d5d3f454e208d2d65 [diff] |
[DAGCombiner][RISCV] Optimize (zext nneg (truncate X)) if X has known sign bits. (#82227) This treats the zext nneg as sext if X is known to have sufficient sign bits to allow the zext or truncate or both to removed. This code is taken from the same optimization for sext.
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