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Revision tags: llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5, llvmorg-18.1.4, llvmorg-18.1.3, llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init |
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| #
f7f7574a |
| 05-Jan-2024 |
Yingwei Zheng <dtcxzyw2333@gmail.com> |
[InstCombine] Canonicalize `switch(C-X)` to `switch(X)` (#77051)
This patch canonicalizes `switch(C-X)` to `switch(X)`.
Compile-time impact:
http://llvm-compile-time-tracker.com/compare.php?from
[InstCombine] Canonicalize `switch(C-X)` to `switch(X)` (#77051)
This patch canonicalizes `switch(C-X)` to `switch(X)`.
Compile-time impact:
http://llvm-compile-time-tracker.com/compare.php?from=7954c57124b495fbdc73674d71f2e366e4afe522&to=31a9adff1e633f0f3c423fb8487fc15d17e171f2&stat=instructions:u
|stage1-O3|stage1-ReleaseThinLTO|stage1-ReleaseLTO-g|stage1-O0-g|stage2-O3|stage2-O0-g|stage2-clang|
|--|--|--|--|--|--|--|
|-0.01%|+0.02%|+0.02%|+0.05%|-0.07%|-0.02%|-0.02%|
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