[llvm] [InstCombine] Fold `(shl ShVal, (X + 1) & (Width-1)) | (lshr ShVal, (X & Width-1) ^ (Width-1))` --> `fshl(ShVal, ShVal, X+1)` (PR #214035)

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Fri Aug 14 22:36:01 PDT 2026

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VachanVY wrote:

@dtcxzyw ping

https://github.com/llvm/llvm-project/pull/214035

Previous message: [llvm] [InstCombine] Fold `(shl ShVal, (X + 1) & (Width-1)) | (lshr ShVal, (X & Width-1) ^ (Width-1))` --> `fshl(ShVal, ShVal, X+1)` (PR #214035)
Next message: [llvm] [InstCombine] Fold `(shl ShVal, (X + 1) & (Width-1)) | (lshr ShVal, (X & Width-1) ^ (Width-1))` --> `fshl(ShVal, ShVal, X+1)` (PR #214035)
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