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| author | bors <bors@rust-lang.org> | 2023-06-18 12:45:41 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2023-06-18 12:45:41 +0000 |
| commit | 677710eaf0a0bdb008959ee8717c9fe1c6d187b3 (patch) | |
| tree | fcf4c9e8fda9a2eb573d806c29586882b513eda4 /compiler/rustc_codegen_llvm/src | |
| parent | 76fb0e38087cb8fcc6de5fe2ce347e939dfdb0bd (diff) | |
| parent | 08a9f25245eb7cbc4f0952a8497808f94999b6b2 (diff) | |
| download | rust-677710eaf0a0bdb008959ee8717c9fe1c6d187b3.tar.gz rust-677710eaf0a0bdb008959ee8717c9fe1c6d187b3.zip | |
Auto merge of #112638 - lqd:rpo, r=cjgillot
Switch the BB CFG cache from postorder to RPO The `BasicBlocks` CFG cache is interesting: - it stores a postorder, but `traversal::postorder` doesn't use it - `traversal::reverse_postorder` does traverse the postorder cache backwards - we do more RPO traversals than postorder traversals (around 20x on the perf.rlo benchmarks IIRC) but it's not cached - a couple places here and there were manually reversing the non-cached postorder traversal This PR switches the order of the cache, and makes a bit more use of it. This is a tiny win locally, but it's also for consistency and aesthetics. r? `@ghost`
Diffstat (limited to 'compiler/rustc_codegen_llvm/src')
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