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AMDGPU: Custom lower bf16 shuffles #122252

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Merged
arsenm merged 2 commits into from
Jan 9, 2025
Merged

AMDGPU: Custom lower bf16 shuffles #122252

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38e358a
AMDGPU: Add gfx940 run line to shuffle vector test
arsenm Jan 9, 2025
168f6a4
AMDGPU: Custom lower bf16 shuffles
arsenm Jan 9, 2025
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10 changes: 5 additions & 5 deletions llvm/lib/Target/AMDGPU/SIISelLowering.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -784,8 +784,9 @@ SITargetLowering::SITargetLowering(const TargetMachine &TM,
{MVT::v2i16, MVT::v2f16, MVT::v2bf16}, Custom);

setOperationAction(ISD::VECTOR_SHUFFLE,
{MVT::v4f16, MVT::v4i16, MVT::v8f16, MVT::v8i16,
MVT::v16f16, MVT::v16i16, MVT::v32f16, MVT::v32i16},
{MVT::v4f16, MVT::v4i16, MVT::v4bf16, MVT::v8f16,
MVT::v8i16, MVT::v8bf16, MVT::v16f16, MVT::v16i16,
MVT::v16bf16, MVT::v32f16, MVT::v32i16, MVT::v32bf16},
Custom);

for (MVT VT : {MVT::v4i16, MVT::v8i16, MVT::v16i16, MVT::v32i16})
Expand Down Expand Up @@ -7545,9 +7546,8 @@ SDValue SITargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
SDLoc SL(Op);
EVT ResultVT = Op.getValueType();
ShuffleVectorSDNode *SVN = cast<ShuffleVectorSDNode>(Op);

EVT PackVT = ResultVT.isInteger() ? MVT::v2i16 : MVT::v2f16;
EVT EltVT = PackVT.getVectorElementType();
MVT EltVT = ResultVT.getVectorElementType().getSimpleVT();
MVT PackVT = MVT::getVectorVT(EltVT, 2);
int SrcNumElts = Op.getOperand(0).getValueType().getVectorNumElements();

// vector_shuffle <0,1,6,7> lhs, rhs
Expand Down
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