[llvm] [SelectionDAG]: Deduce known bits from SMIN and SMAX (PR #85722)
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Mon Mar 18 22:52:40 PDT 2024
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@@ -4017,6 +4015,16 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts,
}
}
+ // For SMIN, if CstHigh is negative we know the result will be
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AtariDreams wrote:
smin_known_zero_2
it mirrors smax's logic
https://github.com/llvm/llvm-project/pull/85722
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