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R600: Move code for generating REGISTER_LOAD into R600ISelLowering.cpp

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SI doesn't use REGISTER_LOAD anymore, but it was still hitting this code
path for 8-bit and 16-bit private loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214566 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard 2014-08-01 21:50:47 +00:00
parent cdc41f5bcf
commit 7f288b455e
3 changed files with 44 additions and 38 deletions
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38
lib/Target/R600/AMDGPUISelLowering.cpp
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@ -1285,43 +1285,7 @@ SDValue AMDGPUTargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
return DAG.getMergeValues(Ops, DL);
}
if (Load->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS ||
ExtType == ISD::NON_EXTLOAD || Load->getMemoryVT().bitsGE(MVT::i32))
return SDValue();
SDValue Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, Load->getBasePtr(),
DAG.getConstant(2, MVT::i32));
SDValue Ret = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, Op.getValueType(),
Load->getChain(), Ptr,
DAG.getTargetConstant(0, MVT::i32),
Op.getOperand(2));
SDValue ByteIdx = DAG.getNode(ISD::AND, DL, MVT::i32,
Load->getBasePtr(),
DAG.getConstant(0x3, MVT::i32));
SDValue ShiftAmt = DAG.getNode(ISD::SHL, DL, MVT::i32, ByteIdx,
DAG.getConstant(3, MVT::i32));
Ret = DAG.getNode(ISD::SRL, DL, MVT::i32, Ret, ShiftAmt);
EVT MemEltVT = MemVT.getScalarType();
if (ExtType == ISD::SEXTLOAD) {
SDValue MemEltVTNode = DAG.getValueType(MemEltVT);
SDValue Ops[] = {
DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, MVT::i32, Ret, MemEltVTNode),
Load->getChain()
};
return DAG.getMergeValues(Ops, DL);
}
SDValue Ops[] = {
DAG.getZeroExtendInReg(Ret, DL, MemEltVT),
Load->getChain()
};
return DAG.getMergeValues(Ops, DL);
return SDValue();
}
SDValue AMDGPUTargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {

41
lib/Target/R600/R600ISelLowering.cpp
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@ -1514,6 +1514,8 @@ SDValue R600TargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const
EVT VT = Op.getValueType();
SDLoc DL(Op);
LoadSDNode *LoadNode = cast<LoadSDNode>(Op);
ISD::LoadExtType ExtType = LoadNode->getExtensionType();
EVT MemVT = LoadNode->getMemoryVT();
SDValue Chain = Op.getOperand(0);
SDValue Ptr = Op.getOperand(1);
SDValue LoweredLoad;
@ -1527,6 +1529,45 @@ SDValue R600TargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const
return DAG.getMergeValues(Ops, DL);
}
// Handle ext private loads
if (LoadNode->getAddressSpace() == AMDGPUAS::PRIVATE_ADDRESS &&
ExtType != ISD::NON_EXTLOAD && LoadNode->getMemoryVT().bitsLT(MVT::i32)) {
SDValue Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, LoadNode->getBasePtr(),
DAG.getConstant(2, MVT::i32));
SDValue Ret = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, Op.getValueType(),
LoadNode->getChain(), Ptr,
DAG.getTargetConstant(0, MVT::i32),
Op.getOperand(2));
SDValue ByteIdx = DAG.getNode(ISD::AND, DL, MVT::i32,
LoadNode->getBasePtr(),
DAG.getConstant(0x3, MVT::i32));
SDValue ShiftAmt = DAG.getNode(ISD::SHL, DL, MVT::i32, ByteIdx,
DAG.getConstant(3, MVT::i32));
Ret = DAG.getNode(ISD::SRL, DL, MVT::i32, Ret, ShiftAmt);
EVT MemEltVT = MemVT.getScalarType();
if (ExtType == ISD::SEXTLOAD) {
SDValue MemEltVTNode = DAG.getValueType(MemEltVT);
SDValue Ops[] = {
DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, MVT::i32, Ret, MemEltVTNode),
LoadNode->getChain()
};
return DAG.getMergeValues(Ops, DL);
}
SDValue Ops[] = {
DAG.getZeroExtendInReg(Ret, DL, MemEltVT),
LoadNode->getChain()
};
return DAG.getMergeValues(Ops, DL);
}
// Lower loads constant address space global variable loads
if (LoadNode->getAddressSpace() == AMDGPUAS::CONSTANT_ADDRESS &&
isa<GlobalVariable>(

3
test/CodeGen/R600/private-memory.ll
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@ -118,7 +118,8 @@ for.end:
; SI-PROMOTE: BUFFER_STORE_SHORT v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], v{{[0-9]+}}, s{{[0-9]+}}
; SI-PROMOTE: BUFFER_STORE_SHORT v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], v{{[0-9]+}}, s{{[0-9]+}}
; SI_PROMOTE: BUFFER_LOAD_SSHORT v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}] + v{{[0-9]+}}, s{{[0-9]+}}
; SI-PROMOTE-NOT: MOVREL
; SI-PROMOTE: BUFFER_LOAD_SSHORT v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}] + v{{[0-9]+}} + s{{[0-9]+}}
define void @short_array(i32 addrspace(1)* %out, i32 %index) {
entry:
%0 = alloca [2 x i16]