//
//===----------------------------------------------------------------------===//
+#ifdef _MSC_VER
+// Provide M_PI.
+#define _USE_MATH_DEFINES
+#include <cmath>
+#endif
+
#include "SIISelLowering.h"
#include "AMDGPU.h"
#include "AMDGPUIntrinsicInfo.h"
#include "SIInstrInfo.h"
#include "SIMachineFunctionInfo.h"
#include "SIRegisterInfo.h"
+#include "llvm/ADT/BitVector.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
setOperationAction(ISD::SUBC, MVT::i32, Legal);
setOperationAction(ISD::SUBE, MVT::i32, Legal);
+ setOperationAction(ISD::FSIN, MVT::f32, Custom);
+ setOperationAction(ISD::FCOS, MVT::f32, Custom);
+
// We need to custom lower vector stores from local memory
- setOperationAction(ISD::LOAD, MVT::v2i32, Custom);
setOperationAction(ISD::LOAD, MVT::v4i32, Custom);
setOperationAction(ISD::LOAD, MVT::v8i32, Custom);
setOperationAction(ISD::LOAD, MVT::v16i32, Custom);
setOperationAction(ISD::STORE, MVT::v8i32, Custom);
setOperationAction(ISD::STORE, MVT::v16i32, Custom);
- // We need to custom lower loads/stores from private memory
- setOperationAction(ISD::LOAD, MVT::i32, Custom);
- setOperationAction(ISD::LOAD, MVT::i64, Custom);
- setOperationAction(ISD::LOAD, MVT::v2i32, Custom);
- setOperationAction(ISD::LOAD, MVT::v4i32, Custom);
- setOperationAction(ISD::LOAD, MVT::v8i32, Custom);
-
setOperationAction(ISD::STORE, MVT::i1, Custom);
setOperationAction(ISD::STORE, MVT::i32, Custom);
- setOperationAction(ISD::STORE, MVT::i64, Custom);
setOperationAction(ISD::STORE, MVT::v2i32, Custom);
setOperationAction(ISD::STORE, MVT::v4i32, Custom);
setOperationAction(ISD::SETCC, MVT::v2i1, Expand);
setOperationAction(ISD::SETCC, MVT::v4i1, Expand);
+ setOperationAction(ISD::BSWAP, MVT::i32, Legal);
+
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Legal);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v2i1, Custom);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v4i1, Custom);
MVT::v8i32, MVT::v8f32, MVT::v16i32, MVT::v16f32
};
+ setOperationAction(ISD::SELECT_CC, MVT::i1, Expand);
+ setOperationAction(ISD::SELECT, MVT::i1, Promote);
+
for (MVT VT : VecTypes) {
for (unsigned Op = 0; Op < ISD::BUILTIN_OP_END; ++Op) {
switch(Op) {
case ISD::BITCAST:
case ISD::EXTRACT_VECTOR_ELT:
case ISD::INSERT_VECTOR_ELT:
- case ISD::CONCAT_VECTORS:
case ISD::INSERT_SUBVECTOR:
case ISD::EXTRACT_SUBVECTOR:
break;
+ case ISD::CONCAT_VECTORS:
+ setOperationAction(Op, VT, Custom);
+ break;
default:
setOperationAction(Op, VT, Expand);
break;
setOperationAction(ISD::FRINT, MVT::f64, Legal);
}
- // FIXME: These should be removed and handled the same was as f32 fneg. Source
- // modifiers also work for the double instructions.
- setOperationAction(ISD::FNEG, MVT::f64, Expand);
- setOperationAction(ISD::FABS, MVT::f64, Expand);
+ setOperationAction(ISD::FDIV, MVT::f32, Custom);
+ setTargetDAGCombine(ISD::FADD);
+ setTargetDAGCombine(ISD::FSUB);
setTargetDAGCombine(ISD::SELECT_CC);
setTargetDAGCombine(ISD::SETCC);
setTargetDAGCombine(ISD::UINT_TO_FP);
+ // All memory operations. Some folding on the pointer operand is done to help
+ // matching the constant offsets in the addressing modes.
+ setTargetDAGCombine(ISD::LOAD);
+ setTargetDAGCombine(ISD::STORE);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD);
+ setTargetDAGCombine(ISD::ATOMIC_STORE);
+ setTargetDAGCombine(ISD::ATOMIC_CMP_SWAP);
+ setTargetDAGCombine(ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS);
+ setTargetDAGCombine(ISD::ATOMIC_SWAP);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_ADD);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_SUB);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_AND);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_OR);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_XOR);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_NAND);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_MIN);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_MAX);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_UMIN);
+ setTargetDAGCombine(ISD::ATOMIC_LOAD_UMAX);
+
setSchedulingPreference(Sched::RegPressure);
}
// TargetLowering queries
//===----------------------------------------------------------------------===//
-bool SITargetLowering::allowsUnalignedMemoryAccesses(EVT VT,
- unsigned AddrSpace,
- bool *IsFast) const {
+bool SITargetLowering::isShuffleMaskLegal(const SmallVectorImpl<int> &,
+ EVT) const {
+ // SI has some legal vector types, but no legal vector operations. Say no
+ // shuffles are legal in order to prefer scalarizing some vector operations.
+ return false;
+}
+
+// FIXME: This really needs an address space argument. The immediate offset
+// size is different for different sets of memory instruction sets.
+
+// The single offset DS instructions have a 16-bit unsigned byte offset.
+//
+// MUBUF / MTBUF have a 12-bit unsigned byte offset, and additionally can do r +
+// r + i with addr64. 32-bit has more addressing mode options. Depending on the
+// resource constant, it can also do (i64 r0) + (i32 r1) * (i14 i).
+//
+// SMRD instructions have an 8-bit, dword offset.
+//
+bool SITargetLowering::isLegalAddressingMode(const AddrMode &AM,
+ Type *Ty) const {
+ // No global is ever allowed as a base.
+ if (AM.BaseGV)
+ return false;
+
+ // Allow a 16-bit unsigned immediate field, since this is what DS instructions
+ // use.
+ if (!isUInt<16>(AM.BaseOffs))
+ return false;
+
+ // Only support r+r,
+ switch (AM.Scale) {
+ case 0: // "r+i" or just "i", depending on HasBaseReg.
+ break;
+ case 1:
+ if (AM.HasBaseReg && AM.BaseOffs) // "r+r+i" is not allowed.
+ return false;
+ // Otherwise we have r+r or r+i.
+ break;
+ case 2:
+ if (AM.HasBaseReg || AM.BaseOffs) // 2*r+r or 2*r+i is not allowed.
+ return false;
+ // Allow 2*r as r+r.
+ break;
+ default: // Don't allow n * r
+ return false;
+ }
+
+ return true;
+}
+
+bool SITargetLowering::allowsMisalignedMemoryAccesses(EVT VT,
+ unsigned AddrSpace,
+ unsigned Align,
+ bool *IsFast) const {
if (IsFast)
*IsFast = false;
- // XXX: This depends on the address space and also we may want to revist
- // the alignment values we specify in the DataLayout.
-
// TODO: I think v3i32 should allow unaligned accesses on CI with DS_READ_B96,
// which isn't a simple VT.
if (!VT.isSimple() || VT == MVT::Other)
// see what for specifically. The wording everywhere else seems to be the
// same.
- // 3.6.4 - Operations using pairs of VGPRs (for example: double-floats) have
- // no alignment restrictions.
- if (AddrSpace == AMDGPUAS::PRIVATE_ADDRESS) {
- // Using any pair of GPRs should be the same as any other pair.
- if (IsFast)
- *IsFast = true;
- return VT.bitsGE(MVT::i64);
- }
-
// XXX - The only mention I see of this in the ISA manual is for LDS direct
// reads the "byte address and must be dword aligned". Is it also true for the
// normal loads and stores?
- if (AddrSpace == AMDGPUAS::LOCAL_ADDRESS)
- return false;
+ if (AddrSpace == AMDGPUAS::LOCAL_ADDRESS) {
+ // ds_read/write_b64 require 8-byte alignment, but we can do a 4 byte
+ // aligned, 8 byte access in a single operation using ds_read2/write2_b32
+ // with adjacent offsets.
+ return Align % 4 == 0;
+ }
// 8.1.6 - For Dword or larger reads or writes, the two LSBs of the
// byte-address are ignored, thus forcing Dword alignment.
+ // This applies to private, global, and constant memory.
if (IsFast)
*IsFast = true;
return VT.bitsGT(MVT::i32);
}
-bool SITargetLowering::shouldSplitVectorType(EVT VT) const {
- return VT.getScalarType().bitsLE(MVT::i16);
+EVT SITargetLowering::getOptimalMemOpType(uint64_t Size, unsigned DstAlign,
+ unsigned SrcAlign, bool IsMemset,
+ bool ZeroMemset,
+ bool MemcpyStrSrc,
+ MachineFunction &MF) const {
+ // FIXME: Should account for address space here.
+
+ // The default fallback uses the private pointer size as a guess for a type to
+ // use. Make sure we switch these to 64-bit accesses.
+
+ if (Size >= 16 && DstAlign >= 4) // XXX: Should only do for global
+ return MVT::v4i32;
+
+ if (Size >= 8 && DstAlign >= 4)
+ return MVT::v2i32;
+
+ // Use the default.
+ return MVT::Other;
+}
+
+TargetLoweringBase::LegalizeTypeAction
+SITargetLowering::getPreferredVectorAction(EVT VT) const {
+ if (VT.getVectorNumElements() != 1 && VT.getScalarType().bitsLE(MVT::i16))
+ return TypeSplitVector;
+
+ return TargetLoweringBase::getPreferredVectorAction(VT);
}
bool SITargetLowering::shouldConvertConstantLoadToIntImm(const APInt &Imm,
Type *Ty) const {
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
return TII->isInlineConstant(Imm);
}
SDValue SITargetLowering::LowerParameter(SelectionDAG &DAG, EVT VT, EVT MemVT,
- SDLoc DL, SDValue Chain,
+ SDLoc SL, SDValue Chain,
unsigned Offset, bool Signed) const {
+ const DataLayout *DL = getDataLayout();
+ MachineFunction &MF = DAG.getMachineFunction();
+ const SIRegisterInfo *TRI =
+ static_cast<const SIRegisterInfo*>(Subtarget->getRegisterInfo());
+ unsigned InputPtrReg = TRI->getPreloadedValue(MF, SIRegisterInfo::INPUT_PTR);
+
+ Type *Ty = VT.getTypeForEVT(*DAG.getContext());
+
MachineRegisterInfo &MRI = DAG.getMachineFunction().getRegInfo();
- PointerType *PtrTy = PointerType::get(VT.getTypeForEVT(*DAG.getContext()),
- AMDGPUAS::CONSTANT_ADDRESS);
- SDValue BasePtr = DAG.getCopyFromReg(Chain, DL,
- MRI.getLiveInVirtReg(AMDGPU::SGPR0_SGPR1), MVT::i64);
- SDValue Ptr = DAG.getNode(ISD::ADD, DL, MVT::i64, BasePtr,
+ PointerType *PtrTy = PointerType::get(Ty, AMDGPUAS::CONSTANT_ADDRESS);
+ SDValue BasePtr = DAG.getCopyFromReg(Chain, SL,
+ MRI.getLiveInVirtReg(InputPtrReg), MVT::i64);
+ SDValue Ptr = DAG.getNode(ISD::ADD, SL, MVT::i64, BasePtr,
DAG.getConstant(Offset, MVT::i64));
- return DAG.getExtLoad(Signed ? ISD::SEXTLOAD : ISD::ZEXTLOAD, DL, VT, Chain, Ptr,
- MachinePointerInfo(UndefValue::get(PtrTy)), MemVT,
- false, false, MemVT.getSizeInBits() >> 3);
-
+ SDValue PtrOffset = DAG.getUNDEF(getPointerTy(AMDGPUAS::CONSTANT_ADDRESS));
+ MachinePointerInfo PtrInfo(UndefValue::get(PtrTy));
+
+ return DAG.getLoad(ISD::UNINDEXED, Signed ? ISD::SEXTLOAD : ISD::ZEXTLOAD,
+ VT, SL, Chain, Ptr, PtrOffset, PtrInfo, MemVT,
+ false, // isVolatile
+ true, // isNonTemporal
+ true, // isInvariant
+ DL->getABITypeAlignment(Ty)); // Alignment
}
SDValue SITargetLowering::LowerFormalArguments(
SDLoc DL, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const {
- const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
+ const TargetMachine &TM = getTargetMachine();
+ const SIRegisterInfo *TRI =
+ static_cast<const SIRegisterInfo*>(TM.getSubtargetImpl()->getRegisterInfo());
MachineFunction &MF = DAG.getMachineFunction();
FunctionType *FType = MF.getFunction()->getFunctionType();
assert(CallConv == CallingConv::C);
SmallVector<ISD::InputArg, 16> Splits;
- uint32_t Skipped = 0;
+ BitVector Skipped(Ins.size());
for (unsigned i = 0, e = Ins.size(), PSInputNum = 0; i != e; ++i) {
const ISD::InputArg &Arg = Ins[i];
// First check if it's a PS input addr
- if (Info->ShaderType == ShaderType::PIXEL && !Arg.Flags.isInReg() &&
+ if (Info->getShaderType() == ShaderType::PIXEL && !Arg.Flags.isInReg() &&
!Arg.Flags.isByVal()) {
assert((PSInputNum <= 15) && "Too many PS inputs!");
if (!Arg.Used) {
// We can savely skip PS inputs
- Skipped |= 1 << i;
+ Skipped.set(i);
++PSInputNum;
continue;
}
}
// Second split vertices into their elements
- if (Info->ShaderType != ShaderType::COMPUTE && Arg.VT.isVector()) {
+ if (Info->getShaderType() != ShaderType::COMPUTE && Arg.VT.isVector()) {
ISD::InputArg NewArg = Arg;
NewArg.Flags.setSplit();
NewArg.VT = Arg.VT.getVectorElementType();
NewArg.PartOffset += NewArg.VT.getStoreSize();
}
- } else if (Info->ShaderType != ShaderType::COMPUTE) {
+ } else if (Info->getShaderType() != ShaderType::COMPUTE) {
Splits.push_back(Arg);
}
}
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
- getTargetMachine(), ArgLocs, *DAG.getContext());
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), ArgLocs,
+ *DAG.getContext());
// At least one interpolation mode must be enabled or else the GPU will hang.
- if (Info->ShaderType == ShaderType::PIXEL && (Info->PSInputAddr & 0x7F) == 0) {
+ if (Info->getShaderType() == ShaderType::PIXEL &&
+ (Info->PSInputAddr & 0x7F) == 0) {
Info->PSInputAddr |= 1;
CCInfo.AllocateReg(AMDGPU::VGPR0);
CCInfo.AllocateReg(AMDGPU::VGPR1);
}
// The pointer to the list of arguments is stored in SGPR0, SGPR1
- if (Info->ShaderType == ShaderType::COMPUTE) {
- CCInfo.AllocateReg(AMDGPU::SGPR0);
- CCInfo.AllocateReg(AMDGPU::SGPR1);
- MF.addLiveIn(AMDGPU::SGPR0_SGPR1, &AMDGPU::SReg_64RegClass);
+ // The pointer to the scratch buffer is stored in SGPR2, SGPR3
+ if (Info->getShaderType() == ShaderType::COMPUTE) {
+ Info->NumUserSGPRs = 4;
+
+ unsigned InputPtrReg =
+ TRI->getPreloadedValue(MF, SIRegisterInfo::INPUT_PTR);
+ unsigned InputPtrRegLo =
+ TRI->getPhysRegSubReg(InputPtrReg, &AMDGPU::SReg_32RegClass, 0);
+ unsigned InputPtrRegHi =
+ TRI->getPhysRegSubReg(InputPtrReg, &AMDGPU::SReg_32RegClass, 1);
+
+ unsigned ScratchPtrReg =
+ TRI->getPreloadedValue(MF, SIRegisterInfo::SCRATCH_PTR);
+ unsigned ScratchPtrRegLo =
+ TRI->getPhysRegSubReg(ScratchPtrReg, &AMDGPU::SReg_32RegClass, 0);
+ unsigned ScratchPtrRegHi =
+ TRI->getPhysRegSubReg(ScratchPtrReg, &AMDGPU::SReg_32RegClass, 1);
+
+ CCInfo.AllocateReg(InputPtrRegLo);
+ CCInfo.AllocateReg(InputPtrRegHi);
+ CCInfo.AllocateReg(ScratchPtrRegLo);
+ CCInfo.AllocateReg(ScratchPtrRegHi);
+ MF.addLiveIn(InputPtrReg, &AMDGPU::SReg_64RegClass);
+ MF.addLiveIn(ScratchPtrReg, &AMDGPU::SReg_64RegClass);
}
- if (Info->ShaderType == ShaderType::COMPUTE) {
+ if (Info->getShaderType() == ShaderType::COMPUTE) {
getOriginalFunctionArgs(DAG, DAG.getMachineFunction().getFunction(), Ins,
Splits);
}
for (unsigned i = 0, e = Ins.size(), ArgIdx = 0; i != e; ++i) {
const ISD::InputArg &Arg = Ins[i];
- if (Skipped & (1 << i)) {
+ if (Skipped[i]) {
InVals.push_back(DAG.getUNDEF(Arg.VT));
continue;
}
if (VA.isMemLoc()) {
VT = Ins[i].VT;
EVT MemVT = Splits[i].VT;
+ const unsigned Offset = 36 + VA.getLocMemOffset();
// The first 36 bytes of the input buffer contains information about
// thread group and global sizes.
SDValue Arg = LowerParameter(DAG, VT, MemVT, DL, DAG.getRoot(),
- 36 + VA.getLocMemOffset(),
- Ins[i].Flags.isSExt());
+ Offset, Ins[i].Flags.isSExt());
+
+ const PointerType *ParamTy =
+ dyn_cast<PointerType>(FType->getParamType(Ins[i].OrigArgIndex));
+ if (Subtarget->getGeneration() == AMDGPUSubtarget::SOUTHERN_ISLANDS &&
+ ParamTy && ParamTy->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS) {
+ // On SI local pointers are just offsets into LDS, so they are always
+ // less than 16-bits. On CI and newer they could potentially be
+ // real pointers, so we can't guarantee their size.
+ Arg = DAG.getNode(ISD::AssertZext, DL, Arg.getValueType(), Arg,
+ DAG.getValueType(MVT::i16));
+ }
+
InVals.push_back(Arg);
+ Info->ABIArgOffset = Offset + MemVT.getStoreSize();
continue;
}
assert(VA.isRegLoc() && "Parameter must be in a register!");
MachineInstr * MI, MachineBasicBlock * BB) const {
MachineBasicBlock::iterator I = *MI;
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
MachineRegisterInfo &MRI = BB->getParent()->getRegInfo();
switch (MI->getOpcode()) {
.addReg(MI->getOperand(1).getReg())
.addImm(1) // SRC1 modifiers
.addReg(MI->getOperand(2).getReg())
- .addImm(0) // SRC2 modifiers
- .addImm(0) // src2
.addImm(0) // CLAMP
.addImm(0); // OMOD
MI->eraseFromParent();
MI->eraseFromParent();
break;
}
- case AMDGPU::FABS_SI: {
- MachineRegisterInfo &MRI = BB->getParent()->getRegInfo();
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
- unsigned Reg = MRI.createVirtualRegister(&AMDGPU::VReg_32RegClass);
- BuildMI(*BB, I, MI->getDebugLoc(), TII->get(AMDGPU::V_MOV_B32_e32),
- Reg)
- .addImm(0x7fffffff);
- BuildMI(*BB, I, MI->getDebugLoc(), TII->get(AMDGPU::V_AND_B32_e32),
- MI->getOperand(0).getReg())
- .addReg(MI->getOperand(1).getReg())
- .addReg(Reg);
- MI->eraseFromParent();
- break;
- }
- case AMDGPU::FNEG_SI: {
- MachineRegisterInfo &MRI = BB->getParent()->getRegInfo();
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
- unsigned Reg = MRI.createVirtualRegister(&AMDGPU::VReg_32RegClass);
- BuildMI(*BB, I, MI->getDebugLoc(), TII->get(AMDGPU::V_MOV_B32_e32),
- Reg)
- .addImm(0x80000000);
- BuildMI(*BB, I, MI->getDebugLoc(), TII->get(AMDGPU::V_XOR_B32_e32),
- MI->getOperand(0).getReg())
- .addReg(MI->getOperand(1).getReg())
- .addReg(Reg);
- MI->eraseFromParent();
- break;
- }
case AMDGPU::FCLAMP_SI: {
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
- BuildMI(*BB, I, MI->getDebugLoc(), TII->get(AMDGPU::V_ADD_F32_e64),
- MI->getOperand(0).getReg())
- .addImm(0) // SRC0 modifiers
- .addOperand(MI->getOperand(1))
- .addImm(0) // SRC1 modifiers
- .addImm(0) // SRC1
- .addImm(1) // CLAMP
- .addImm(0); // OMOD
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
+ DebugLoc DL = MI->getDebugLoc();
+ unsigned DestReg = MI->getOperand(0).getReg();
+ BuildMI(*BB, I, DL, TII->get(AMDGPU::V_ADD_F32_e64), DestReg)
+ .addImm(0) // SRC0 modifiers
+ .addOperand(MI->getOperand(1))
+ .addImm(0) // SRC1 modifiers
+ .addImm(0) // SRC1
+ .addImm(1) // CLAMP
+ .addImm(0); // OMOD
MI->eraseFromParent();
}
}
//===----------------------------------------------------------------------===//
SDValue SITargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
- MachineFunction &MF = DAG.getMachineFunction();
- SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
switch (Op.getOpcode()) {
default: return AMDGPUTargetLowering::LowerOperation(Op, DAG);
+ case ISD::FrameIndex: return LowerFrameIndex(Op, DAG);
case ISD::BRCOND: return LowerBRCOND(Op, DAG);
case ISD::LOAD: {
- LoadSDNode *Load = dyn_cast<LoadSDNode>(Op);
- if (Op.getValueType().isVector() &&
- (Load->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS ||
- Load->getAddressSpace() == AMDGPUAS::PRIVATE_ADDRESS ||
- (Load->getAddressSpace() == AMDGPUAS::GLOBAL_ADDRESS &&
- Op.getValueType().getVectorNumElements() > 4))) {
- SDValue MergedValues[2] = {
- SplitVectorLoad(Op, DAG),
- Load->getChain()
- };
- return DAG.getMergeValues(MergedValues, SDLoc(Op));
- } else {
- return LowerLOAD(Op, DAG);
- }
+ SDValue Result = LowerLOAD(Op, DAG);
+ assert((!Result.getNode() ||
+ Result.getNode()->getNumValues() == 2) &&
+ "Load should return a value and a chain");
+ return Result;
}
+ case ISD::FSIN:
+ case ISD::FCOS:
+ return LowerTrig(Op, DAG);
case ISD::SELECT: return LowerSELECT(Op, DAG);
+ case ISD::FDIV: return LowerFDIV(Op, DAG);
case ISD::STORE: return LowerSTORE(Op, DAG);
- case ISD::GlobalAddress: return LowerGlobalAddress(MFI, Op, DAG);
- case ISD::INTRINSIC_WO_CHAIN: {
- unsigned IntrinsicID =
- cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
- EVT VT = Op.getValueType();
- SDLoc DL(Op);
- //XXX: Hardcoded we only use two to store the pointer to the parameters.
- unsigned NumUserSGPRs = 2;
- switch (IntrinsicID) {
- default: return AMDGPUTargetLowering::LowerOperation(Op, DAG);
- case Intrinsic::r600_read_ngroups_x:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 0, false);
- case Intrinsic::r600_read_ngroups_y:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 4, false);
- case Intrinsic::r600_read_ngroups_z:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 8, false);
- case Intrinsic::r600_read_global_size_x:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 12, false);
- case Intrinsic::r600_read_global_size_y:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 16, false);
- case Intrinsic::r600_read_global_size_z:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 20, false);
- case Intrinsic::r600_read_local_size_x:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 24, false);
- case Intrinsic::r600_read_local_size_y:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 28, false);
- case Intrinsic::r600_read_local_size_z:
- return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(), 32, false);
- case Intrinsic::r600_read_tgid_x:
- return CreateLiveInRegister(DAG, &AMDGPU::SReg_32RegClass,
- AMDGPU::SReg_32RegClass.getRegister(NumUserSGPRs + 0), VT);
- case Intrinsic::r600_read_tgid_y:
- return CreateLiveInRegister(DAG, &AMDGPU::SReg_32RegClass,
- AMDGPU::SReg_32RegClass.getRegister(NumUserSGPRs + 1), VT);
- case Intrinsic::r600_read_tgid_z:
- return CreateLiveInRegister(DAG, &AMDGPU::SReg_32RegClass,
- AMDGPU::SReg_32RegClass.getRegister(NumUserSGPRs + 2), VT);
- case Intrinsic::r600_read_tidig_x:
- return CreateLiveInRegister(DAG, &AMDGPU::VReg_32RegClass,
- AMDGPU::VGPR0, VT);
- case Intrinsic::r600_read_tidig_y:
- return CreateLiveInRegister(DAG, &AMDGPU::VReg_32RegClass,
- AMDGPU::VGPR1, VT);
- case Intrinsic::r600_read_tidig_z:
- return CreateLiveInRegister(DAG, &AMDGPU::VReg_32RegClass,
- AMDGPU::VGPR2, VT);
- case AMDGPUIntrinsic::SI_load_const: {
- SDValue Ops [] = {
- Op.getOperand(1),
- Op.getOperand(2)
- };
-
- MachineMemOperand *MMO = MF.getMachineMemOperand(
- MachinePointerInfo(),
- MachineMemOperand::MOLoad | MachineMemOperand::MOInvariant,
- VT.getSizeInBits() / 8, 4);
- return DAG.getMemIntrinsicNode(AMDGPUISD::LOAD_CONSTANT, DL,
- Op->getVTList(), Ops, VT, MMO);
- }
- case AMDGPUIntrinsic::SI_sample:
- return LowerSampleIntrinsic(AMDGPUISD::SAMPLE, Op, DAG);
- case AMDGPUIntrinsic::SI_sampleb:
- return LowerSampleIntrinsic(AMDGPUISD::SAMPLEB, Op, DAG);
- case AMDGPUIntrinsic::SI_sampled:
- return LowerSampleIntrinsic(AMDGPUISD::SAMPLED, Op, DAG);
- case AMDGPUIntrinsic::SI_samplel:
- return LowerSampleIntrinsic(AMDGPUISD::SAMPLEL, Op, DAG);
- case AMDGPUIntrinsic::SI_vs_load_input:
- return DAG.getNode(AMDGPUISD::LOAD_INPUT, DL, VT,
- Op.getOperand(1),
- Op.getOperand(2),
- Op.getOperand(3));
- }
+ case ISD::GlobalAddress: {
+ MachineFunction &MF = DAG.getMachineFunction();
+ SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
+ return LowerGlobalAddress(MFI, Op, DAG);
}
-
- case ISD::INTRINSIC_VOID:
- SDValue Chain = Op.getOperand(0);
- unsigned IntrinsicID = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
-
- switch (IntrinsicID) {
- case AMDGPUIntrinsic::SI_tbuffer_store: {
- SDLoc DL(Op);
- SDValue Ops [] = {
- Chain,
- Op.getOperand(2),
- Op.getOperand(3),
- Op.getOperand(4),
- Op.getOperand(5),
- Op.getOperand(6),
- Op.getOperand(7),
- Op.getOperand(8),
- Op.getOperand(9),
- Op.getOperand(10),
- Op.getOperand(11),
- Op.getOperand(12),
- Op.getOperand(13),
- Op.getOperand(14)
- };
- EVT VT = Op.getOperand(3).getValueType();
-
- MachineMemOperand *MMO = MF.getMachineMemOperand(
- MachinePointerInfo(),
- MachineMemOperand::MOStore,
- VT.getSizeInBits() / 8, 4);
- return DAG.getMemIntrinsicNode(AMDGPUISD::TBUFFER_STORE_FORMAT, DL,
- Op->getVTList(), Ops, VT, MMO);
- }
- default:
- break;
- }
+ case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG);
+ case ISD::INTRINSIC_VOID: return LowerINTRINSIC_VOID(Op, DAG);
}
return SDValue();
}
return nullptr;
}
+SDValue SITargetLowering::LowerFrameIndex(SDValue Op, SelectionDAG &DAG) const {
+
+ FrameIndexSDNode *FINode = cast<FrameIndexSDNode>(Op);
+ unsigned FrameIndex = FINode->getIndex();
+
+ return DAG.getTargetFrameIndex(FrameIndex, MVT::i32);
+}
+
/// This transforms the control flow intrinsics to get the branch destination as
/// last parameter, also switches branch target with BR if the need arise
SDValue SITargetLowering::LowerBRCOND(SDValue BRCOND,
BR->getOperand(0),
BRCOND.getOperand(2)
};
- DAG.MorphNodeTo(BR, ISD::BR, BR->getVTList(), Ops);
+ SDValue NewBR = DAG.getNode(ISD::BR, DL, BR->getVTList(), Ops);
+ DAG.ReplaceAllUsesWith(BR, NewBR.getNode());
+ BR = NewBR.getNode();
}
SDValue Chain = SDValue(Result, Result->getNumValues() - 1);
return Chain;
}
-SDValue SITargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
+SDValue SITargetLowering::LowerGlobalAddress(AMDGPUMachineFunction *MFI,
+ SDValue Op,
+ SelectionDAG &DAG) const {
+ GlobalAddressSDNode *GSD = cast<GlobalAddressSDNode>(Op);
+
+ if (GSD->getAddressSpace() != AMDGPUAS::CONSTANT_ADDRESS)
+ return AMDGPUTargetLowering::LowerGlobalAddress(MFI, Op, DAG);
+
+ SDLoc DL(GSD);
+ const GlobalValue *GV = GSD->getGlobal();
+ MVT PtrVT = getPointerTy(GSD->getAddressSpace());
+
+ SDValue Ptr = DAG.getNode(AMDGPUISD::CONST_DATA_PTR, DL, PtrVT);
+ SDValue GA = DAG.getTargetGlobalAddress(GV, DL, MVT::i32);
+
+ SDValue PtrLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, Ptr,
+ DAG.getConstant(0, MVT::i32));
+ SDValue PtrHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, Ptr,
+ DAG.getConstant(1, MVT::i32));
+
+ SDValue Lo = DAG.getNode(ISD::ADDC, DL, DAG.getVTList(MVT::i32, MVT::Glue),
+ PtrLo, GA);
+ SDValue Hi = DAG.getNode(ISD::ADDE, DL, DAG.getVTList(MVT::i32, MVT::Glue),
+ PtrHi, DAG.getConstant(0, MVT::i32),
+ SDValue(Lo.getNode(), 1));
+ return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
+}
+
+SDValue SITargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
+ SelectionDAG &DAG) const {
+ MachineFunction &MF = DAG.getMachineFunction();
+ const SIRegisterInfo *TRI =
+ static_cast<const SIRegisterInfo*>(MF.getSubtarget().getRegisterInfo());
+
+ EVT VT = Op.getValueType();
SDLoc DL(Op);
- LoadSDNode *Load = cast<LoadSDNode>(Op);
- SDValue Ret = AMDGPUTargetLowering::LowerLOAD(Op, DAG);
- SDValue MergedValues[2];
- MergedValues[1] = Load->getChain();
- if (Ret.getNode()) {
- MergedValues[0] = Ret;
- return DAG.getMergeValues(MergedValues, DL);
- }
+ unsigned IntrinsicID = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
+
+ switch (IntrinsicID) {
+ case Intrinsic::r600_read_ngroups_x:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::NGROUPS_X, false);
+ case Intrinsic::r600_read_ngroups_y:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::NGROUPS_Y, false);
+ case Intrinsic::r600_read_ngroups_z:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::NGROUPS_Z, false);
+ case Intrinsic::r600_read_global_size_x:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::GLOBAL_SIZE_X, false);
+ case Intrinsic::r600_read_global_size_y:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::GLOBAL_SIZE_Y, false);
+ case Intrinsic::r600_read_global_size_z:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::GLOBAL_SIZE_Z, false);
+ case Intrinsic::r600_read_local_size_x:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::LOCAL_SIZE_X, false);
+ case Intrinsic::r600_read_local_size_y:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::LOCAL_SIZE_Y, false);
+ case Intrinsic::r600_read_local_size_z:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ SI::KernelInputOffsets::LOCAL_SIZE_Z, false);
+
+ case Intrinsic::AMDGPU_read_workdim:
+ return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
+ MF.getInfo<SIMachineFunctionInfo>()->ABIArgOffset,
+ false);
+
+ case Intrinsic::r600_read_tgid_x:
+ return CreateLiveInRegister(DAG, &AMDGPU::SReg_32RegClass,
+ TRI->getPreloadedValue(MF, SIRegisterInfo::TGID_X), VT);
+ case Intrinsic::r600_read_tgid_y:
+ return CreateLiveInRegister(DAG, &AMDGPU::SReg_32RegClass,
+ TRI->getPreloadedValue(MF, SIRegisterInfo::TGID_Y), VT);
+ case Intrinsic::r600_read_tgid_z:
+ return CreateLiveInRegister(DAG, &AMDGPU::SReg_32RegClass,
+ TRI->getPreloadedValue(MF, SIRegisterInfo::TGID_Z), VT);
+ case Intrinsic::r600_read_tidig_x:
+ return CreateLiveInRegister(DAG, &AMDGPU::VReg_32RegClass,
+ TRI->getPreloadedValue(MF, SIRegisterInfo::TIDIG_X), VT);
+ case Intrinsic::r600_read_tidig_y:
+ return CreateLiveInRegister(DAG, &AMDGPU::VReg_32RegClass,
+ TRI->getPreloadedValue(MF, SIRegisterInfo::TIDIG_Y), VT);
+ case Intrinsic::r600_read_tidig_z:
+ return CreateLiveInRegister(DAG, &AMDGPU::VReg_32RegClass,
+ TRI->getPreloadedValue(MF, SIRegisterInfo::TIDIG_Z), VT);
+ case AMDGPUIntrinsic::SI_load_const: {
+ SDValue Ops[] = {
+ Op.getOperand(1),
+ Op.getOperand(2)
+ };
- if (Load->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS) {
- return SDValue();
+ MachineMemOperand *MMO = MF.getMachineMemOperand(
+ MachinePointerInfo(),
+ MachineMemOperand::MOLoad | MachineMemOperand::MOInvariant,
+ VT.getStoreSize(), 4);
+ return DAG.getMemIntrinsicNode(AMDGPUISD::LOAD_CONSTANT, DL,
+ Op->getVTList(), Ops, VT, MMO);
}
+ case AMDGPUIntrinsic::SI_sample:
+ return LowerSampleIntrinsic(AMDGPUISD::SAMPLE, Op, DAG);
+ case AMDGPUIntrinsic::SI_sampleb:
+ return LowerSampleIntrinsic(AMDGPUISD::SAMPLEB, Op, DAG);
+ case AMDGPUIntrinsic::SI_sampled:
+ return LowerSampleIntrinsic(AMDGPUISD::SAMPLED, Op, DAG);
+ case AMDGPUIntrinsic::SI_samplel:
+ return LowerSampleIntrinsic(AMDGPUISD::SAMPLEL, Op, DAG);
+ case AMDGPUIntrinsic::SI_vs_load_input:
+ return DAG.getNode(AMDGPUISD::LOAD_INPUT, DL, VT,
+ Op.getOperand(1),
+ Op.getOperand(2),
+ Op.getOperand(3));
+ default:
+ return AMDGPUTargetLowering::LowerOperation(Op, DAG);
+ }
+}
- EVT MemVT = Load->getMemoryVT();
-
- assert(!MemVT.isVector() && "Private loads should be scalarized");
- assert(!MemVT.isFloatingPoint() && "FP loads should be promoted to int");
+SDValue SITargetLowering::LowerINTRINSIC_VOID(SDValue Op,
+ SelectionDAG &DAG) const {
+ MachineFunction &MF = DAG.getMachineFunction();
+ SDValue Chain = Op.getOperand(0);
+ unsigned IntrinsicID = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
- SDValue Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, Load->getBasePtr(),
- DAG.getConstant(2, MVT::i32));
- Ret = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, MVT::i32,
- Load->getChain(), Ptr,
- DAG.getTargetConstant(0, MVT::i32),
- Op.getOperand(2));
- if (MemVT.getSizeInBits() == 64) {
- SDValue IncPtr = DAG.getNode(ISD::ADD, DL, MVT::i32, Ptr,
- DAG.getConstant(1, MVT::i32));
+ switch (IntrinsicID) {
+ case AMDGPUIntrinsic::SI_tbuffer_store: {
+ SDLoc DL(Op);
+ SDValue Ops[] = {
+ Chain,
+ Op.getOperand(2),
+ Op.getOperand(3),
+ Op.getOperand(4),
+ Op.getOperand(5),
+ Op.getOperand(6),
+ Op.getOperand(7),
+ Op.getOperand(8),
+ Op.getOperand(9),
+ Op.getOperand(10),
+ Op.getOperand(11),
+ Op.getOperand(12),
+ Op.getOperand(13),
+ Op.getOperand(14)
+ };
- SDValue LoadUpper = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, MVT::i32,
- Load->getChain(), IncPtr,
- DAG.getTargetConstant(0, MVT::i32),
- Op.getOperand(2));
+ EVT VT = Op.getOperand(3).getValueType();
- Ret = DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Ret, LoadUpper);
+ MachineMemOperand *MMO = MF.getMachineMemOperand(
+ MachinePointerInfo(),
+ MachineMemOperand::MOStore,
+ VT.getStoreSize(), 4);
+ return DAG.getMemIntrinsicNode(AMDGPUISD::TBUFFER_STORE_FORMAT, DL,
+ Op->getVTList(), Ops, VT, MMO);
}
+ default:
+ return SDValue();
+ }
+}
- MergedValues[0] = Ret;
- return DAG.getMergeValues(MergedValues, DL);
+SDValue SITargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ LoadSDNode *Load = cast<LoadSDNode>(Op);
+ if (Op.getValueType().isVector()) {
+ assert(Op.getValueType().getVectorElementType() == MVT::i32 &&
+ "Custom lowering for non-i32 vectors hasn't been implemented.");
+ unsigned NumElements = Op.getValueType().getVectorNumElements();
+ assert(NumElements != 2 && "v2 loads are supported for all address spaces.");
+ switch (Load->getAddressSpace()) {
+ default: break;
+ case AMDGPUAS::GLOBAL_ADDRESS:
+ case AMDGPUAS::PRIVATE_ADDRESS:
+ // v4 loads are supported for private and global memory.
+ if (NumElements <= 4)
+ break;
+ // fall-through
+ case AMDGPUAS::LOCAL_ADDRESS:
+ return ScalarizeVectorLoad(Op, DAG);
+ }
+ }
+
+ return AMDGPUTargetLowering::LowerLOAD(Op, DAG);
}
SDValue SITargetLowering::LowerSampleIntrinsic(unsigned Opcode,
return DAG.getNode(ISD::BITCAST, DL, MVT::i64, Res);
}
+// Catch division cases where we can use shortcuts with rcp and rsq
+// instructions.
+SDValue SITargetLowering::LowerFastFDIV(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc SL(Op);
+ SDValue LHS = Op.getOperand(0);
+ SDValue RHS = Op.getOperand(1);
+ EVT VT = Op.getValueType();
+ bool Unsafe = DAG.getTarget().Options.UnsafeFPMath;
+
+ if (const ConstantFPSDNode *CLHS = dyn_cast<ConstantFPSDNode>(LHS)) {
+ if ((Unsafe || (VT == MVT::f32 && !Subtarget->hasFP32Denormals())) &&
+ CLHS->isExactlyValue(1.0)) {
+ // v_rcp_f32 and v_rsq_f32 do not support denormals, and according to
+ // the CI documentation has a worst case error of 1 ulp.
+ // OpenCL requires <= 2.5 ulp for 1.0 / x, so it should always be OK to
+ // use it as long as we aren't trying to use denormals.
+
+ // 1.0 / sqrt(x) -> rsq(x)
+ //
+ // XXX - Is UnsafeFPMath sufficient to do this for f64? The maximum ULP
+ // error seems really high at 2^29 ULP.
+ if (RHS.getOpcode() == ISD::FSQRT)
+ return DAG.getNode(AMDGPUISD::RSQ, SL, VT, RHS.getOperand(0));
+
+ // 1.0 / x -> rcp(x)
+ return DAG.getNode(AMDGPUISD::RCP, SL, VT, RHS);
+ }
+ }
+
+ if (Unsafe) {
+ // Turn into multiply by the reciprocal.
+ // x / y -> x * (1.0 / y)
+ SDValue Recip = DAG.getNode(AMDGPUISD::RCP, SL, VT, RHS);
+ return DAG.getNode(ISD::FMUL, SL, VT, LHS, Recip);
+ }
+
+ return SDValue();
+}
+
+SDValue SITargetLowering::LowerFDIV32(SDValue Op, SelectionDAG &DAG) const {
+ SDValue FastLowered = LowerFastFDIV(Op, DAG);
+ if (FastLowered.getNode())
+ return FastLowered;
+
+ // This uses v_rcp_f32 which does not handle denormals. Let this hit a
+ // selection error for now rather than do something incorrect.
+ if (Subtarget->hasFP32Denormals())
+ return SDValue();
+
+ SDLoc SL(Op);
+ SDValue LHS = Op.getOperand(0);
+ SDValue RHS = Op.getOperand(1);
+
+ SDValue r1 = DAG.getNode(ISD::FABS, SL, MVT::f32, RHS);
+
+ const APFloat K0Val(BitsToFloat(0x6f800000));
+ const SDValue K0 = DAG.getConstantFP(K0Val, MVT::f32);
+
+ const APFloat K1Val(BitsToFloat(0x2f800000));
+ const SDValue K1 = DAG.getConstantFP(K1Val, MVT::f32);
+
+ const SDValue One = DAG.getTargetConstantFP(1.0, MVT::f32);
+
+ EVT SetCCVT = getSetCCResultType(*DAG.getContext(), MVT::f32);
+
+ SDValue r2 = DAG.getSetCC(SL, SetCCVT, r1, K0, ISD::SETOGT);
+
+ SDValue r3 = DAG.getNode(ISD::SELECT, SL, MVT::f32, r2, K1, One);
+
+ r1 = DAG.getNode(ISD::FMUL, SL, MVT::f32, RHS, r3);
+
+ SDValue r0 = DAG.getNode(AMDGPUISD::RCP, SL, MVT::f32, r1);
+
+ SDValue Mul = DAG.getNode(ISD::FMUL, SL, MVT::f32, LHS, r0);
+
+ return DAG.getNode(ISD::FMUL, SL, MVT::f32, r3, Mul);
+}
+
+SDValue SITargetLowering::LowerFDIV64(SDValue Op, SelectionDAG &DAG) const {
+ return SDValue();
+}
+
+SDValue SITargetLowering::LowerFDIV(SDValue Op, SelectionDAG &DAG) const {
+ EVT VT = Op.getValueType();
+
+ if (VT == MVT::f32)
+ return LowerFDIV32(Op, DAG);
+
+ if (VT == MVT::f64)
+ return LowerFDIV64(Op, DAG);
+
+ llvm_unreachable("Unexpected type for fdiv");
+}
+
SDValue SITargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {
SDLoc DL(Op);
StoreSDNode *Store = cast<StoreSDNode>(Op);
EVT VT = Store->getMemoryVT();
+ // These stores are legal.
+ if (Store->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS &&
+ VT.isVector() && VT.getVectorNumElements() == 2 &&
+ VT.getVectorElementType() == MVT::i32)
+ return SDValue();
+
+ if (Store->getAddressSpace() == AMDGPUAS::PRIVATE_ADDRESS) {
+ if (VT.isVector() && VT.getVectorNumElements() > 4)
+ return ScalarizeVectorStore(Op, DAG);
+ return SDValue();
+ }
+
SDValue Ret = AMDGPUTargetLowering::LowerSTORE(Op, DAG);
if (Ret.getNode())
return Ret;
if (VT.isVector() && VT.getVectorNumElements() >= 8)
- return SplitVectorStore(Op, DAG);
+ return ScalarizeVectorStore(Op, DAG);
if (VT == MVT::i1)
return DAG.getTruncStore(Store->getChain(), DL,
DAG.getSExtOrTrunc(Store->getValue(), DL, MVT::i32),
Store->getBasePtr(), MVT::i1, Store->getMemOperand());
- if (Store->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS)
- return SDValue();
+ return SDValue();
+}
- SDValue Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, Store->getBasePtr(),
- DAG.getConstant(2, MVT::i32));
- SDValue Chain = Store->getChain();
- SmallVector<SDValue, 8> Values;
-
- if (Store->isTruncatingStore()) {
- unsigned Mask = 0;
- if (Store->getMemoryVT() == MVT::i8) {
- Mask = 0xff;
- } else if (Store->getMemoryVT() == MVT::i16) {
- Mask = 0xffff;
- }
- SDValue Dst = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, MVT::i32,
- Chain, Store->getBasePtr(),
- DAG.getConstant(0, MVT::i32));
- SDValue ByteIdx = DAG.getNode(ISD::AND, DL, MVT::i32, Store->getBasePtr(),
- DAG.getConstant(0x3, MVT::i32));
- SDValue ShiftAmt = DAG.getNode(ISD::SHL, DL, MVT::i32, ByteIdx,
- DAG.getConstant(3, MVT::i32));
- SDValue MaskedValue = DAG.getNode(ISD::AND, DL, MVT::i32, Store->getValue(),
- DAG.getConstant(Mask, MVT::i32));
- SDValue ShiftedValue = DAG.getNode(ISD::SHL, DL, MVT::i32,
- MaskedValue, ShiftAmt);
- SDValue RotrAmt = DAG.getNode(ISD::SUB, DL, MVT::i32,
- DAG.getConstant(32, MVT::i32), ShiftAmt);
- SDValue DstMask = DAG.getNode(ISD::ROTR, DL, MVT::i32,
- DAG.getConstant(Mask, MVT::i32),
- RotrAmt);
- Dst = DAG.getNode(ISD::AND, DL, MVT::i32, Dst, DstMask);
- Dst = DAG.getNode(ISD::OR, DL, MVT::i32, Dst, ShiftedValue);
-
- Values.push_back(Dst);
- } else if (VT == MVT::i64) {
- for (unsigned i = 0; i < 2; ++i) {
- Values.push_back(DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32,
- Store->getValue(), DAG.getConstant(i, MVT::i32)));
- }
- } else if (VT == MVT::i128) {
- for (unsigned i = 0; i < 2; ++i) {
- for (unsigned j = 0; j < 2; ++j) {
- Values.push_back(DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32,
- DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i64,
- Store->getValue(), DAG.getConstant(i, MVT::i32)),
- DAG.getConstant(j, MVT::i32)));
- }
- }
- } else {
- Values.push_back(Store->getValue());
- }
+SDValue SITargetLowering::LowerTrig(SDValue Op, SelectionDAG &DAG) const {
+ EVT VT = Op.getValueType();
+ SDValue Arg = Op.getOperand(0);
+ SDValue FractPart = DAG.getNode(AMDGPUISD::FRACT, SDLoc(Op), VT,
+ DAG.getNode(ISD::FMUL, SDLoc(Op), VT, Arg,
+ DAG.getConstantFP(0.5 / M_PI, VT)));
- for (unsigned i = 0; i < Values.size(); ++i) {
- SDValue PartPtr = DAG.getNode(ISD::ADD, DL, MVT::i32,
- Ptr, DAG.getConstant(i, MVT::i32));
- Chain = DAG.getNode(AMDGPUISD::REGISTER_STORE, DL, MVT::Other,
- Chain, Values[i], PartPtr,
- DAG.getTargetConstant(0, MVT::i32));
+ switch (Op.getOpcode()) {
+ case ISD::FCOS:
+ return DAG.getNode(AMDGPUISD::COS_HW, SDLoc(Op), VT, FractPart);
+ case ISD::FSIN:
+ return DAG.getNode(AMDGPUISD::SIN_HW, SDLoc(Op), VT, FractPart);
+ default:
+ llvm_unreachable("Wrong trig opcode");
}
- return Chain;
}
//===----------------------------------------------------------------------===//
return SDValue();
}
+// (shl (add x, c1), c2) -> add (shl x, c2), (shl c1, c2)
+
+// This is a variant of
+// (mul (add x, c1), c2) -> add (mul x, c2), (mul c1, c2),
+//
+// The normal DAG combiner will do this, but only if the add has one use since
+// that would increase the number of instructions.
+//
+// This prevents us from seeing a constant offset that can be folded into a
+// memory instruction's addressing mode. If we know the resulting add offset of
+// a pointer can be folded into an addressing offset, we can replace the pointer
+// operand with the add of new constant offset. This eliminates one of the uses,
+// and may allow the remaining use to also be simplified.
+//
+SDValue SITargetLowering::performSHLPtrCombine(SDNode *N,
+ unsigned AddrSpace,
+ DAGCombinerInfo &DCI) const {
+ SDValue N0 = N->getOperand(0);
+ SDValue N1 = N->getOperand(1);
+
+ if (N0.getOpcode() != ISD::ADD)
+ return SDValue();
+
+ const ConstantSDNode *CN1 = dyn_cast<ConstantSDNode>(N1);
+ if (!CN1)
+ return SDValue();
+
+ const ConstantSDNode *CAdd = dyn_cast<ConstantSDNode>(N0.getOperand(1));
+ if (!CAdd)
+ return SDValue();
+
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
+
+ // If the resulting offset is too large, we can't fold it into the addressing
+ // mode offset.
+ APInt Offset = CAdd->getAPIntValue() << CN1->getAPIntValue();
+ if (!TII->canFoldOffset(Offset.getZExtValue(), AddrSpace))
+ return SDValue();
+
+ SelectionDAG &DAG = DCI.DAG;
+ SDLoc SL(N);
+ EVT VT = N->getValueType(0);
+
+ SDValue ShlX = DAG.getNode(ISD::SHL, SL, VT, N0.getOperand(0), N1);
+ SDValue COffset = DAG.getConstant(Offset, MVT::i32);
+
+ return DAG.getNode(ISD::ADD, SL, VT, ShlX, COffset);
+}
+
SDValue SITargetLowering::PerformDAGCombine(SDNode *N,
DAGCombinerInfo &DCI) const {
SelectionDAG &DAG = DCI.DAG;
switch (N->getOpcode()) {
default: return AMDGPUTargetLowering::PerformDAGCombine(N, DCI);
- case ISD::SELECT_CC: {
- ConstantSDNode *True, *False;
- // i1 selectcc(l, r, -1, 0, cc) -> i1 setcc(l, r, cc)
- if ((True = dyn_cast<ConstantSDNode>(N->getOperand(2)))
- && (False = dyn_cast<ConstantSDNode>(N->getOperand(3)))
- && True->isAllOnesValue()
- && False->isNullValue()
- && VT == MVT::i1) {
- return DAG.getNode(ISD::SETCC, DL, VT, N->getOperand(0),
- N->getOperand(1), N->getOperand(4));
-
- }
- break;
- }
case ISD::SETCC: {
SDValue Arg0 = N->getOperand(0);
SDValue Arg1 = N->getOperand(1);
case ISD::UINT_TO_FP: {
return performUCharToFloatCombine(N, DCI);
+
+ case ISD::FADD: {
+ if (DCI.getDAGCombineLevel() < AfterLegalizeDAG)
+ break;
+
+ EVT VT = N->getValueType(0);
+ if (VT != MVT::f32)
+ break;
+
+ SDValue LHS = N->getOperand(0);
+ SDValue RHS = N->getOperand(1);
+
+ // These should really be instruction patterns, but writing patterns with
+ // source modiifiers is a pain.
+
+ // fadd (fadd (a, a), b) -> mad 2.0, a, b
+ if (LHS.getOpcode() == ISD::FADD) {
+ SDValue A = LHS.getOperand(0);
+ if (A == LHS.getOperand(1)) {
+ const SDValue Two = DAG.getTargetConstantFP(2.0, MVT::f32);
+ return DAG.getNode(AMDGPUISD::MAD, DL, VT, Two, A, RHS);
+ }
+ }
+
+ // fadd (b, fadd (a, a)) -> mad 2.0, a, b
+ if (RHS.getOpcode() == ISD::FADD) {
+ SDValue A = RHS.getOperand(0);
+ if (A == RHS.getOperand(1)) {
+ const SDValue Two = DAG.getTargetConstantFP(2.0, MVT::f32);
+ return DAG.getNode(AMDGPUISD::MAD, DL, VT, Two, A, LHS);
+ }
+ }
+
+ break;
+ }
+ case ISD::FSUB: {
+ if (DCI.getDAGCombineLevel() < AfterLegalizeDAG)
+ break;
+
+ EVT VT = N->getValueType(0);
+
+ // Try to get the fneg to fold into the source modifier. This undoes generic
+ // DAG combines and folds them into the mad.
+ if (VT == MVT::f32) {
+ SDValue LHS = N->getOperand(0);
+ SDValue RHS = N->getOperand(1);
+
+ if (LHS.getOpcode() == ISD::FMUL) {
+ // (fsub (fmul a, b), c) -> mad a, b, (fneg c)
+
+ SDValue A = LHS.getOperand(0);
+ SDValue B = LHS.getOperand(1);
+ SDValue C = DAG.getNode(ISD::FNEG, DL, VT, RHS);
+
+ return DAG.getNode(AMDGPUISD::MAD, DL, VT, A, B, C);
+ }
+
+ if (RHS.getOpcode() == ISD::FMUL) {
+ // (fsub c, (fmul a, b)) -> mad (fneg a), b, c
+
+ SDValue A = DAG.getNode(ISD::FNEG, DL, VT, RHS.getOperand(0));
+ SDValue B = RHS.getOperand(1);
+ SDValue C = LHS;
+
+ return DAG.getNode(AMDGPUISD::MAD, DL, VT, A, B, C);
+ }
+
+ if (LHS.getOpcode() == ISD::FADD) {
+ // (fsub (fadd a, a), c) -> mad 2.0, a, (fneg c)
+
+ SDValue A = LHS.getOperand(0);
+ if (A == LHS.getOperand(1)) {
+ const SDValue Two = DAG.getTargetConstantFP(2.0, MVT::f32);
+ SDValue NegRHS = DAG.getNode(ISD::FNEG, DL, VT, RHS);
+
+ return DAG.getNode(AMDGPUISD::MAD, DL, VT, Two, A, NegRHS);
+ }
+ }
+
+ if (RHS.getOpcode() == ISD::FADD) {
+ // (fsub c, (fadd a, a)) -> mad -2.0, a, c
+
+ SDValue A = RHS.getOperand(0);
+ if (A == RHS.getOperand(1)) {
+ const SDValue NegTwo = DAG.getTargetConstantFP(-2.0, MVT::f32);
+ return DAG.getNode(AMDGPUISD::MAD, DL, VT, NegTwo, A, LHS);
+ }
+ }
+ }
+
+ break;
}
}
+ case ISD::LOAD:
+ case ISD::STORE:
+ case ISD::ATOMIC_LOAD:
+ case ISD::ATOMIC_STORE:
+ case ISD::ATOMIC_CMP_SWAP:
+ case ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS:
+ case ISD::ATOMIC_SWAP:
+ case ISD::ATOMIC_LOAD_ADD:
+ case ISD::ATOMIC_LOAD_SUB:
+ case ISD::ATOMIC_LOAD_AND:
+ case ISD::ATOMIC_LOAD_OR:
+ case ISD::ATOMIC_LOAD_XOR:
+ case ISD::ATOMIC_LOAD_NAND:
+ case ISD::ATOMIC_LOAD_MIN:
+ case ISD::ATOMIC_LOAD_MAX:
+ case ISD::ATOMIC_LOAD_UMIN:
+ case ISD::ATOMIC_LOAD_UMAX: { // TODO: Target mem intrinsics.
+ if (DCI.isBeforeLegalize())
+ break;
+ MemSDNode *MemNode = cast<MemSDNode>(N);
+ SDValue Ptr = MemNode->getBasePtr();
+
+ // TODO: We could also do this for multiplies.
+ unsigned AS = MemNode->getAddressSpace();
+ if (Ptr.getOpcode() == ISD::SHL && AS != AMDGPUAS::PRIVATE_ADDRESS) {
+ SDValue NewPtr = performSHLPtrCombine(Ptr.getNode(), AS, DCI);
+ if (NewPtr) {
+ SmallVector<SDValue, 8> NewOps;
+ for (unsigned I = 0, E = MemNode->getNumOperands(); I != E; ++I)
+ NewOps.push_back(MemNode->getOperand(I));
+
+ NewOps[N->getOpcode() == ISD::STORE ? 2 : 1] = NewPtr;
+ return SDValue(DAG.UpdateNodeOperands(MemNode, NewOps), 0);
+ }
+ }
+ break;
+ }
+ }
return AMDGPUTargetLowering::PerformDAGCombine(N, DCI);
}
/// \brief Test if RegClass is one of the VSrc classes
static bool isVSrc(unsigned RegClass) {
- return AMDGPU::VSrc_32RegClassID == RegClass ||
- AMDGPU::VSrc_64RegClassID == RegClass;
+ switch(RegClass) {
+ default: return false;
+ case AMDGPU::VSrc_32RegClassID:
+ case AMDGPU::VCSrc_32RegClassID:
+ case AMDGPU::VSrc_64RegClassID:
+ case AMDGPU::VCSrc_64RegClassID:
+ return true;
+ }
}
/// \brief Test if RegClass is one of the SSrc classes
bool &ScalarSlotUsed) const {
MachineSDNode *Mov = dyn_cast<MachineSDNode>(Operand);
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
if (!Mov || !TII->isMov(Mov->getMachineOpcode()))
return false;
const TargetRegisterClass *SITargetLowering::getRegClassForNode(
SelectionDAG &DAG, const SDValue &Op) const {
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
const SIRegisterInfo &TRI = TII->getRegisterInfo();
if (!Op->isMachineOpcode()) {
// If the COPY_TO_REGCLASS instruction is copying to a VSrc register
// class, then the register class for the value could be either a
// VReg or and SReg. In order to get a more accurate
- if (OpClassID == AMDGPU::VSrc_32RegClassID ||
- OpClassID == AMDGPU::VSrc_64RegClassID) {
+ if (isVSrc(OpClassID))
return getRegClassForNode(DAG, Op.getOperand(0));
- }
+
return TRI.getRegClass(OpClassID);
case AMDGPU::EXTRACT_SUBREG: {
int SubIdx = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
/// \brief Does "Op" fit into register class "RegClass" ?
bool SITargetLowering::fitsRegClass(SelectionDAG &DAG, const SDValue &Op,
unsigned RegClass) const {
- const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
+ const TargetRegisterInfo *TRI =
+ getTargetMachine().getSubtargetImpl()->getRegisterInfo();
const TargetRegisterClass *RC = getRegClassForNode(DAG, Op);
if (!RC) {
return false;
return TRI->getRegClass(RegClass)->hasSubClassEq(RC);
}
-/// \brief Make sure that we don't exeed the number of allowed scalars
-void SITargetLowering::ensureSRegLimit(SelectionDAG &DAG, SDValue &Operand,
- unsigned RegClass,
- bool &ScalarSlotUsed) const {
-
- // First map the operands register class to a destination class
- if (RegClass == AMDGPU::VSrc_32RegClassID)
- RegClass = AMDGPU::VReg_32RegClassID;
- else if (RegClass == AMDGPU::VSrc_64RegClassID)
- RegClass = AMDGPU::VReg_64RegClassID;
- else
- return;
-
- // Nothing to do if they fit naturally
- if (fitsRegClass(DAG, Operand, RegClass))
- return;
-
- // If the scalar slot isn't used yet use it now
- if (!ScalarSlotUsed) {
- ScalarSlotUsed = true;
- return;
- }
-
- // This is a conservative aproach. It is possible that we can't determine the
- // correct register class and copy too often, but better safe than sorry.
- SDValue RC = DAG.getTargetConstant(RegClass, MVT::i32);
- SDNode *Node = DAG.getMachineNode(TargetOpcode::COPY_TO_REGCLASS, SDLoc(),
- Operand.getValueType(), Operand, RC);
- Operand = SDValue(Node, 0);
-}
-
/// \returns true if \p Node's operands are different from the SDValue list
/// \p Ops
static bool isNodeChanged(const SDNode *Node, const std::vector<SDValue> &Ops) {
return false;
}
-/// \brief Try to fold the Nodes operands into the Node
-SDNode *SITargetLowering::foldOperands(MachineSDNode *Node,
- SelectionDAG &DAG) const {
-
+/// TODO: This needs to be removed. It's current primary purpose is to fold
+/// immediates into operands when legal. The legalization parts are redundant
+/// with SIInstrInfo::legalizeOperands which is called in a post-isel hook.
+SDNode *SITargetLowering::legalizeOperands(MachineSDNode *Node,
+ SelectionDAG &DAG) const {
// Original encoding (either e32 or e64)
int Opcode = Node->getMachineOpcode();
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
const MCInstrDesc *Desc = &TII->get(Opcode);
unsigned NumDefs = Desc->getNumDefs();
assert(!DescRev || DescRev->getNumDefs() == NumDefs);
assert(!DescRev || DescRev->getNumOperands() == NumOps);
- // e64 version if available, -1 otherwise
- int OpcodeE64 = AMDGPU::getVOPe64(Opcode);
- const MCInstrDesc *DescE64 = OpcodeE64 == -1 ? nullptr : &TII->get(OpcodeE64);
- int InputModifiers[3] = {0};
-
- assert(!DescE64 || DescE64->getNumDefs() == NumDefs);
-
int32_t Immediate = Desc->getSize() == 4 ? 0 : -1;
bool HaveVSrc = false, HaveSSrc = false;
// No scalar allowed when we have both VSrc and SSrc
bool ScalarSlotUsed = HaveVSrc && HaveSSrc;
+ // If this instruction has an implicit use of VCC, then it can't use the
+ // constant bus.
+ for (unsigned i = 0, e = Desc->getNumImplicitUses(); i != e; ++i) {
+ if (Desc->ImplicitUses[i] == AMDGPU::VCC) {
+ ScalarSlotUsed = true;
+ break;
+ }
+ }
+
// Second go over the operands and try to fold them
std::vector<SDValue> Ops;
- bool Promote2e64 = false;
for (unsigned i = 0, e = Node->getNumOperands(), Op = NumDefs;
i != e && Op < NumOps; ++i, ++Op) {
// Is this a VSrc or SSrc operand?
unsigned RegClass = Desc->OpInfo[Op].RegClass;
if (isVSrc(RegClass) || isSSrc(RegClass)) {
- // Try to fold the immediates
- if (!foldImm(Ops[i], Immediate, ScalarSlotUsed)) {
- // Folding didn't work, make sure we don't hit the SReg limit.
- ensureSRegLimit(DAG, Ops[i], RegClass, ScalarSlotUsed);
- }
+ // Try to fold the immediates. If this ends up with multiple constant bus
+ // uses, it will be legalized later.
+ foldImm(Ops[i], Immediate, ScalarSlotUsed);
continue;
}
continue;
}
}
-
- if (Immediate)
- continue;
-
- if (DescE64) {
- // Test if it makes sense to switch to e64 encoding
- unsigned OtherRegClass = DescE64->OpInfo[Op].RegClass;
- if (!isVSrc(OtherRegClass) && !isSSrc(OtherRegClass))
- continue;
-
- int32_t TmpImm = -1;
- if (foldImm(Ops[i], TmpImm, ScalarSlotUsed) ||
- (!fitsRegClass(DAG, Ops[i], RegClass) &&
- fitsRegClass(DAG, Ops[1], OtherRegClass))) {
-
- // Switch to e64 encoding
- Immediate = -1;
- Promote2e64 = true;
- Desc = DescE64;
- DescE64 = nullptr;
- }
- }
-
- if (!DescE64 && !Promote2e64)
- continue;
- if (!Operand.isMachineOpcode())
- continue;
- if (Operand.getMachineOpcode() == AMDGPU::FNEG_SI) {
- Ops.pop_back();
- Ops.push_back(Operand.getOperand(0));
- InputModifiers[i] = 1;
- Promote2e64 = true;
- if (!DescE64)
- continue;
- Desc = DescE64;
- DescE64 = nullptr;
- }
- else if (Operand.getMachineOpcode() == AMDGPU::FABS_SI) {
- Ops.pop_back();
- Ops.push_back(Operand.getOperand(0));
- InputModifiers[i] = 2;
- Promote2e64 = true;
- if (!DescE64)
- continue;
- Desc = DescE64;
- DescE64 = nullptr;
- }
- }
-
- if (Promote2e64) {
- std::vector<SDValue> OldOps(Ops);
- Ops.clear();
- for (unsigned i = 0; i < OldOps.size(); ++i) {
- // src_modifier
- Ops.push_back(DAG.getTargetConstant(InputModifiers[i], MVT::i32));
- Ops.push_back(OldOps[i]);
- }
- // Add the modifier flags while promoting
- for (unsigned i = 0; i < 2; ++i)
- Ops.push_back(DAG.getTargetConstant(0, MVT::i32));
}
// Add optional chain and glue
}
}
+/// \brief Legalize target independent instructions (e.g. INSERT_SUBREG)
+/// with frame index operands.
+/// LLVM assumes that inputs are to these instructions are registers.
+void SITargetLowering::legalizeTargetIndependentNode(SDNode *Node,
+ SelectionDAG &DAG) const {
+
+ SmallVector<SDValue, 8> Ops;
+ for (unsigned i = 0; i < Node->getNumOperands(); ++i) {
+ if (!isa<FrameIndexSDNode>(Node->getOperand(i))) {
+ Ops.push_back(Node->getOperand(i));
+ continue;
+ }
+
+ SDLoc DL(Node);
+ Ops.push_back(SDValue(DAG.getMachineNode(AMDGPU::S_MOV_B32, DL,
+ Node->getOperand(i).getValueType(),
+ Node->getOperand(i)), 0));
+ }
+
+ DAG.UpdateNodeOperands(Node, Ops);
+}
+
/// \brief Fold the instructions after selecting them.
SDNode *SITargetLowering::PostISelFolding(MachineSDNode *Node,
SelectionDAG &DAG) const {
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
Node = AdjustRegClass(Node, DAG);
if (TII->isMIMG(Node->getMachineOpcode()))
adjustWritemask(Node, DAG);
- return foldOperands(Node, DAG);
+ if (Node->getMachineOpcode() == AMDGPU::INSERT_SUBREG) {
+ legalizeTargetIndependentNode(Node, DAG);
+ return Node;
+ }
+
+ return legalizeOperands(Node, DAG);
}
/// \brief Assign the register class depending on the number of
/// bits set in the writemask
void SITargetLowering::AdjustInstrPostInstrSelection(MachineInstr *MI,
SDNode *Node) const {
- const SIInstrInfo *TII =
- static_cast<const SIInstrInfo*>(getTargetMachine().getInstrInfo());
- if (!TII->isMIMG(MI->getOpcode()))
+ const SIInstrInfo *TII = static_cast<const SIInstrInfo *>(
+ getTargetMachine().getSubtargetImpl()->getInstrInfo());
+
+ TII->legalizeOperands(MI);
+
+ if (TII->isMIMG(MI->getOpcode())) {
+ unsigned VReg = MI->getOperand(0).getReg();
+ unsigned Writemask = MI->getOperand(1).getImm();
+ unsigned BitsSet = 0;
+ for (unsigned i = 0; i < 4; ++i)
+ BitsSet += Writemask & (1 << i) ? 1 : 0;
+
+ const TargetRegisterClass *RC;
+ switch (BitsSet) {
+ default: return;
+ case 1: RC = &AMDGPU::VReg_32RegClass; break;
+ case 2: RC = &AMDGPU::VReg_64RegClass; break;
+ case 3: RC = &AMDGPU::VReg_96RegClass; break;
+ }
+
+ unsigned NewOpcode = TII->getMaskedMIMGOp(MI->getOpcode(), BitsSet);
+ MI->setDesc(TII->get(NewOpcode));
+ MachineRegisterInfo &MRI = MI->getParent()->getParent()->getRegInfo();
+ MRI.setRegClass(VReg, RC);
return;
+ }
- unsigned VReg = MI->getOperand(0).getReg();
- unsigned Writemask = MI->getOperand(1).getImm();
- unsigned BitsSet = 0;
- for (unsigned i = 0; i < 4; ++i)
- BitsSet += Writemask & (1 << i) ? 1 : 0;
+ // Replace unused atomics with the no return version.
+ int NoRetAtomicOp = AMDGPU::getAtomicNoRetOp(MI->getOpcode());
+ if (NoRetAtomicOp != -1) {
+ if (!Node->hasAnyUseOfValue(0)) {
+ MI->setDesc(TII->get(NoRetAtomicOp));
+ MI->RemoveOperand(0);
+ }
- const TargetRegisterClass *RC;
- switch (BitsSet) {
- default: return;
- case 1: RC = &AMDGPU::VReg_32RegClass; break;
- case 2: RC = &AMDGPU::VReg_64RegClass; break;
- case 3: RC = &AMDGPU::VReg_96RegClass; break;
+ return;
}
-
- unsigned NewOpcode = TII->getMaskedMIMGOp(MI->getOpcode(), BitsSet);
- MI->setDesc(TII->get(NewOpcode));
- MachineRegisterInfo &MRI = MI->getParent()->getParent()->getRegInfo();
- MRI.setRegClass(VReg, RC);
}
MachineSDNode *SITargetLowering::AdjustRegClass(MachineSDNode *N,
return N;
}
ConstantSDNode *Offset = cast<ConstantSDNode>(N->getOperand(1));
- SDValue Ops[] = {
- SDValue(DAG.getMachineNode(AMDGPU::SI_ADDR64_RSRC, DL, MVT::i128,
- DAG.getConstant(0, MVT::i64)), 0),
- N->getOperand(0),
- DAG.getConstant(Offset->getSExtValue() << 2, MVT::i32)
- };
+ MachineSDNode *RSrc = DAG.getMachineNode(AMDGPU::SI_ADDR64_RSRC, DL,
+ MVT::i128,
+ DAG.getConstant(0, MVT::i64));
+
+ SmallVector<SDValue, 8> Ops;
+ Ops.push_back(SDValue(RSrc, 0));
+ Ops.push_back(N->getOperand(0));
+ Ops.push_back(DAG.getConstant(Offset->getSExtValue() << 2, MVT::i32));
+
+ // Copy remaining operands so we keep any chain and glue nodes that follow
+ // the normal operands.
+ for (unsigned I = 2, E = N->getNumOperands(); I != E; ++I)
+ Ops.push_back(N->getOperand(I));
+
return DAG.getMachineNode(NewOpcode, DL, N->getVTList(), Ops);
}
}
projects / oota-llvm.git / blobdiff