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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-05-03 11:11:03 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-05-03 11:11:03 +0000 |
| commit | bfd00a64404e148ae3255e994f90fe14be8df49d (patch) | |
| tree | 125a2dbdd4a4125d463ea5074f101dec1ddcc279 /llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | |
| parent | a359ef192b13a6b443807c49b0a4c8c6c663d08b (diff) | |
| download | llvm-bfd00a64404e148ae3255e994f90fe14be8df49d.zip llvm-bfd00a64404e148ae3255e994f90fe14be8df49d.tar.gz llvm-bfd00a64404e148ae3255e994f90fe14be8df49d.tar.bz2 | |
[SelectionDAG] computeKnownBits - remove some duplicate/shadow variables. NFCI.
llvm-svn: 359872
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index d2e8767..f3099e3 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -3059,21 +3059,20 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts, case ISD::EXTRACT_ELEMENT: { Known = computeKnownBits(Op.getOperand(0), Depth+1); const unsigned Index = Op.getConstantOperandVal(1); - const unsigned BitWidth = Op.getValueSizeInBits(); + const unsigned EltBitWidth = Op.getValueSizeInBits(); // Remove low part of known bits mask - Known.Zero = Known.Zero.getHiBits(Known.Zero.getBitWidth() - Index * BitWidth); - Known.One = Known.One.getHiBits(Known.One.getBitWidth() - Index * BitWidth); + Known.Zero = Known.Zero.getHiBits(Known.getBitWidth() - Index * EltBitWidth); + Known.One = Known.One.getHiBits(Known.getBitWidth() - Index * EltBitWidth); // Remove high part of known bit mask - Known = Known.trunc(BitWidth); + Known = Known.trunc(EltBitWidth); break; } case ISD::EXTRACT_VECTOR_ELT: { SDValue InVec = Op.getOperand(0); SDValue EltNo = Op.getOperand(1); EVT VecVT = InVec.getValueType(); - const unsigned BitWidth = Op.getValueSizeInBits(); const unsigned EltBitWidth = VecVT.getScalarSizeInBits(); const unsigned NumSrcElts = VecVT.getVectorNumElements(); // If BitWidth > EltBitWidth the value is anyext:ed. So we do not know @@ -3670,7 +3669,6 @@ unsigned SelectionDAG::ComputeNumSignBits(SDValue Op, const APInt &DemandedElts, SDValue InVec = Op.getOperand(0); SDValue InVal = Op.getOperand(1); SDValue EltNo = Op.getOperand(2); - unsigned NumElts = InVec.getValueType().getVectorNumElements(); ConstantSDNode *CEltNo = dyn_cast<ConstantSDNode>(EltNo); if (CEltNo && CEltNo->getAPIntValue().ult(NumElts)) { |