[llvm] [DAG] SimplifyDemandedBits - ensure we demand the high bits for shl nsw/nuw ops (PR #70041)
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Tue Oct 24 06:36:59 PDT 2023
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git-clang-format --diff cdaaa4d7fb26e3790ef022e3501820d4ba0f7728 fd8d5939bae153f0d4a48789643533688c856db1 -- llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
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View the diff from clang-format here.
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diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 826f77340..946ac3e07 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -1797,10 +1797,10 @@ bool TargetLowering::SimplifyDemandedBits(
return true;
assert(!Known.hasConflict() && "Bits known to be one AND zero?");
- Known = KnownBits::shl(Known,
- KnownBits::makeConstant(APInt(BitWidth, ShAmt)),
- /* NUW */ Op->getFlags().hasNoUnsignedWrap(),
- /* NSW */ Op->getFlags().hasNoSignedWrap());
+ Known =
+ KnownBits::shl(Known, KnownBits::makeConstant(APInt(BitWidth, ShAmt)),
+ /* NUW */ Op->getFlags().hasNoUnsignedWrap(),
+ /* NSW */ Op->getFlags().hasNoSignedWrap());
// Attempt to avoid multi-use ops if we don't need anything from them.
if (!InDemandedMask.isAllOnes() || !DemandedElts.isAllOnes()) {
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https://github.com/llvm/llvm-project/pull/70041
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