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AMDGPU: Delete dead code 

This has been dead since r269479

llvm-svn: 276518
This commit is contained in:
Matt Arsenault 2016-07-23 07:07:14 +00:00
parent b65f8ae9e8
commit b40d8600ca
2 changed files with 0 additions and 97 deletions
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93
llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
View File

@ -745,94 +745,6 @@ void AMDGPUTargetLowering::ReplaceNodeResults(SDNode *N,
}
}
// FIXME: This implements accesses to initialized globals in the constant
// address space by copying them to private and accessing that. It does not
// properly handle illegal types or vectors. The private vector loads are not
// scalarized, and the illegal scalars hit an assertion. This technique will not
// work well with large initializers, and this should eventually be
// removed. Initialized globals should be placed into a data section that the
// runtime will load into a buffer before the kernel is executed. Uses of the
// global need to be replaced with a pointer loaded from an implicit kernel
// argument into this buffer holding the copy of the data, which will remove the
// need for any of this.
SDValue AMDGPUTargetLowering::LowerConstantInitializer(const Constant* Init,
const GlobalValue *GV,
const SDValue &InitPtr,
SDValue Chain,
SelectionDAG &DAG) const {
const DataLayout &TD = DAG.getDataLayout();
SDLoc DL(InitPtr);
Type *InitTy = Init->getType();
if (const ConstantInt *CI = dyn_cast<ConstantInt>(Init)) {
EVT VT = EVT::getEVT(InitTy);
PointerType *PtrTy = PointerType::get(InitTy, AMDGPUAS::PRIVATE_ADDRESS);
return DAG.getStore(Chain, DL, DAG.getConstant(*CI, DL, VT), InitPtr,
MachinePointerInfo(UndefValue::get(PtrTy)),
TD.getPrefTypeAlignment(InitTy));
}
if (const ConstantFP *CFP = dyn_cast<ConstantFP>(Init)) {
EVT VT = EVT::getEVT(CFP->getType());
PointerType *PtrTy = PointerType::get(CFP->getType(), 0);
return DAG.getStore(Chain, DL, DAG.getConstantFP(*CFP, DL, VT), InitPtr,
MachinePointerInfo(UndefValue::get(PtrTy)),
TD.getPrefTypeAlignment(CFP->getType()));
}
if (StructType *ST = dyn_cast<StructType>(InitTy)) {
const StructLayout *SL = TD.getStructLayout(ST);
EVT PtrVT = InitPtr.getValueType();
SmallVector<SDValue, 8> Chains;
for (unsigned I = 0, N = ST->getNumElements(); I != N; ++I) {
SDValue Offset = DAG.getConstant(SL->getElementOffset(I), DL, PtrVT);
SDValue Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, InitPtr, Offset);
Constant *Elt = Init->getAggregateElement(I);
Chains.push_back(LowerConstantInitializer(Elt, GV, Ptr, Chain, DAG));
}
return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Chains);
}
if (SequentialType *SeqTy = dyn_cast<SequentialType>(InitTy)) {
EVT PtrVT = InitPtr.getValueType();
unsigned NumElements;
if (ArrayType *AT = dyn_cast<ArrayType>(SeqTy))
NumElements = AT->getNumElements();
else if (VectorType *VT = dyn_cast<VectorType>(SeqTy))
NumElements = VT->getNumElements();
else
llvm_unreachable("Unexpected type");
unsigned EltSize = TD.getTypeAllocSize(SeqTy->getElementType());
SmallVector<SDValue, 8> Chains;
for (unsigned i = 0; i < NumElements; ++i) {
SDValue Offset = DAG.getConstant(i * EltSize, DL, PtrVT);
SDValue Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, InitPtr, Offset);
Constant *Elt = Init->getAggregateElement(i);
Chains.push_back(LowerConstantInitializer(Elt, GV, Ptr, Chain, DAG));
}
return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Chains);
}
if (isa<UndefValue>(Init)) {
EVT VT = EVT::getEVT(InitTy);
PointerType *PtrTy = PointerType::get(InitTy, AMDGPUAS::PRIVATE_ADDRESS);
return DAG.getStore(Chain, DL, DAG.getUNDEF(VT), InitPtr,
MachinePointerInfo(UndefValue::get(PtrTy)),
TD.getPrefTypeAlignment(InitTy));
}
Init->dump();
llvm_unreachable("Unhandled constant initializer");
}
static bool hasDefinedInitializer(const GlobalValue *GV) {
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV);
if (!GVar || !GVar->hasInitializer())
@ -850,11 +762,6 @@ SDValue AMDGPUTargetLowering::LowerGlobalAddress(AMDGPUMachineFunction* MFI,
const GlobalValue *GV = G->getGlobal();
switch (G->getAddressSpace()) {
case AMDGPUAS::CONSTANT_ADDRESS: {
MVT ConstPtrVT = getPointerTy(DL, AMDGPUAS::CONSTANT_ADDRESS);
SDValue GA = DAG.getTargetGlobalAddress(GV, SDLoc(G), ConstPtrVT);
return DAG.getNode(AMDGPUISD::CONST_DATA_PTR, SDLoc(G), ConstPtrVT, GA);
}
case AMDGPUAS::LOCAL_ADDRESS: {
// XXX: What does the value of G->getOffset() mean?
assert(G->getOffset() == 0 &&

4
llvm/lib/Target/AMDGPU/AMDGPUISelLowering.h
View File

@ -28,10 +28,6 @@ class AMDGPUTargetLowering : public TargetLowering {
protected:
const AMDGPUSubtarget *Subtarget;
SDValue LowerConstantInitializer(const Constant* Init, const GlobalValue *GV,
const SDValue &InitPtr,
SDValue Chain,
SelectionDAG &DAG) const;
SDValue LowerEXTRACT_SUBVECTOR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerCONCAT_VECTORS(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const;