| commit | cb6f021af2354761357684ffa26ebbe718615244 | [log] [tgz] |
|---|---|---|
| author | Luke Lau <luke@igalia.com> | Mon Jan 27 23:54:32 2025 +0800 |
| committer | GitHub <noreply@github.com> | Mon Jan 27 23:54:32 2025 +0800 |
| tree | 0ba14e068e0b7228d02583db0b59df22df4e2f6d | |
| parent | f95f10c7e65b9abd9b4e2ed71190d08565952ec0 [diff] |
[RISCV][VLOPT] Remove unnecessary passthru restriction (#124549) We currently check for passthrus in two places, on the instruction to reduce in isCandidate, and on the users in checkUsers. We cannot reduce the VL if an instruction has a user that's a passthru, because the user will read elements past VL in the tail. However it's fine to reduce an instruction if it itself contains a non-undef passthru. Since the VL can only be reduced, not increased, the previous tail will always remain the same.
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