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R600: Move clamp handling code to R600IselLowering.cpp

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llvm-svn: 190645
This commit is contained in:
Vincent Lejeune 2013-09-12 23:45:00 +00:00
parent 439c29a29d
commit a130649ec4
2 changed files with 17 additions and 33 deletions
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34
lib/Target/R600/AMDGPUISelDAGToDAG.cpp
View File

@ -309,39 +309,7 @@ SDNode *AMDGPUDAGToDAGISel::Select(SDNode *N) {
SDLoc(N), N->getValueType(0), Ops);
}
}
SDNode *Result = SelectCode(N);
// Fold operands of selected node
const AMDGPUSubtarget &ST = TM.getSubtarget<AMDGPUSubtarget>();
if (ST.getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS) {
const R600InstrInfo *TII =
static_cast<const R600InstrInfo*>(TM.getInstrInfo());
if (Result && Result->isMachineOpcode() &&
!(TII->get(Result->getMachineOpcode()).TSFlags & R600_InstFlag::VECTOR)
&& TII->hasInstrModifiers(Result->getMachineOpcode())) {
// If node has a single use which is CLAMP_R600, folds it
if (Result->hasOneUse() && Result->isMachineOpcode()) {
SDNode *PotentialClamp = *Result->use_begin();
if (PotentialClamp->isMachineOpcode() &&
PotentialClamp->getMachineOpcode() == AMDGPU::CLAMP_R600) {
unsigned ClampIdx =
TII->getOperandIdx(Result->getMachineOpcode(), AMDGPU::OpName::clamp);
std::vector<SDValue> Ops;
unsigned NumOp = Result->getNumOperands();
for (unsigned i = 0; i < NumOp; ++i) {
Ops.push_back(Result->getOperand(i));
}
Ops[ClampIdx - 1] = CurDAG->getTargetConstant(1, MVT::i32);
Result = CurDAG->SelectNodeTo(PotentialClamp,
Result->getMachineOpcode(), PotentialClamp->getVTList(),
Ops.data(), NumOp);
}
}
}
}
return Result;
return SelectCode(N);
}

16
lib/Target/R600/R600ISelLowering.cpp
View File

@ -1822,6 +1822,22 @@ SDNode *R600TargetLowering::PostISelFolding(MachineSDNode *Node,
if (FoldOperand(Node, i, Src, FakeOp, FakeOp, FakeOp, FakeOp, DAG))
return DAG.getMachineNode(Opcode, SDLoc(Node), Node->getVTList(), Ops);
}
} else if (Opcode == AMDGPU::CLAMP_R600) {
SDValue Src = Node->getOperand(0);
if (!Src.isMachineOpcode() ||
!TII->hasInstrModifiers(Src.getMachineOpcode()))
return Node;
int ClampIdx = TII->getOperandIdx(Src.getMachineOpcode(),
AMDGPU::OpName::clamp);
if (ClampIdx < 0)
return Node;
std::vector<SDValue> Ops;
unsigned NumOp = Src.getNumOperands();
for(unsigned i = 0; i < NumOp; ++i)
Ops.push_back(Src.getOperand(i));
Ops[ClampIdx - 1] = DAG.getTargetConstant(1, MVT::i32);
return DAG.getMachineNode(Src.getMachineOpcode(), SDLoc(Node),
Node->getVTList(), Ops);
} else {
if (!TII->hasInstrModifiers(Opcode))
return Node;