//===----------------------------------------------------------------------===//
#include "AMDGPUISelLowering.h"
+#include "AMDGPU.h"
+#include "AMDGPUFrameLowering.h"
#include "AMDGPURegisterInfo.h"
#include "AMDGPUSubtarget.h"
#include "AMDILIntrinsicInfo.h"
+#include "R600MachineFunctionInfo.h"
+#include "SIMachineFunctionInfo.h"
+#include "llvm/Analysis/ValueTracking.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DiagnosticInfo.h"
+#include "llvm/IR/DiagnosticPrinter.h"
using namespace llvm;
+namespace {
+
+/// Diagnostic information for unimplemented or unsupported feature reporting.
+class DiagnosticInfoUnsupported : public DiagnosticInfo {
+private:
+ const Twine &Description;
+ const Function &Fn;
+
+ static int KindID;
+
+ static int getKindID() {
+ if (KindID == 0)
+ KindID = llvm::getNextAvailablePluginDiagnosticKind();
+ return KindID;
+ }
+
+public:
+ DiagnosticInfoUnsupported(const Function &Fn, const Twine &Desc,
+ DiagnosticSeverity Severity = DS_Error)
+ : DiagnosticInfo(getKindID(), Severity),
+ Description(Desc),
+ Fn(Fn) { }
+
+ const Function &getFunction() const { return Fn; }
+ const Twine &getDescription() const { return Description; }
+
+ void print(DiagnosticPrinter &DP) const override {
+ DP << "unsupported " << getDescription() << " in " << Fn.getName();
+ }
+
+ static bool classof(const DiagnosticInfo *DI) {
+ return DI->getKind() == getKindID();
+ }
+};
+
+int DiagnosticInfoUnsupported::KindID = 0;
+}
+
+
+static bool allocateStack(unsigned ValNo, MVT ValVT, MVT LocVT,
+ CCValAssign::LocInfo LocInfo,
+ ISD::ArgFlagsTy ArgFlags, CCState &State) {
+ unsigned Offset = State.AllocateStack(ValVT.getStoreSize(),
+ ArgFlags.getOrigAlign());
+ State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
+
+ return true;
+}
+
#include "AMDGPUGenCallingConv.inc"
AMDGPUTargetLowering::AMDGPUTargetLowering(TargetMachine &TM) :
TargetLowering(TM, new TargetLoweringObjectFileELF()) {
+ Subtarget = &TM.getSubtarget<AMDGPUSubtarget>();
+
// Initialize target lowering borrowed from AMDIL
InitAMDILLowering();
setOperationAction(ISD::FABS, MVT::f32, Legal);
setOperationAction(ISD::FFLOOR, MVT::f32, Legal);
setOperationAction(ISD::FRINT, MVT::f32, Legal);
+ setOperationAction(ISD::FROUND, MVT::f32, Legal);
+ setOperationAction(ISD::FTRUNC, MVT::f32, Legal);
// The hardware supports ROTR, but not ROTL
setOperationAction(ISD::ROTL, MVT::i32, Expand);
setOperationAction(ISD::STORE, MVT::f32, Promote);
AddPromotedToType(ISD::STORE, MVT::f32, MVT::i32);
+ setOperationAction(ISD::STORE, MVT::v2f32, Promote);
+ AddPromotedToType(ISD::STORE, MVT::v2f32, MVT::v2i32);
+
setOperationAction(ISD::STORE, MVT::v4f32, Promote);
AddPromotedToType(ISD::STORE, MVT::v4f32, MVT::v4i32);
+ setOperationAction(ISD::STORE, MVT::v8f32, Promote);
+ AddPromotedToType(ISD::STORE, MVT::v8f32, MVT::v8i32);
+
+ setOperationAction(ISD::STORE, MVT::v16f32, Promote);
+ AddPromotedToType(ISD::STORE, MVT::v16f32, MVT::v16i32);
+
+ setOperationAction(ISD::STORE, MVT::f64, Promote);
+ AddPromotedToType(ISD::STORE, MVT::f64, MVT::i64);
+
+ setOperationAction(ISD::STORE, MVT::v2f64, Promote);
+ AddPromotedToType(ISD::STORE, MVT::v2f64, MVT::v2i64);
+
+ // Custom lowering of vector stores is required for local address space
+ // stores.
+ setOperationAction(ISD::STORE, MVT::v4i32, Custom);
+ // XXX: Native v2i32 local address space stores are possible, but not
+ // currently implemented.
+ setOperationAction(ISD::STORE, MVT::v2i32, Custom);
+
+ setTruncStoreAction(MVT::v2i32, MVT::v2i16, Custom);
+ setTruncStoreAction(MVT::v2i32, MVT::v2i8, Custom);
+ setTruncStoreAction(MVT::v4i32, MVT::v4i8, Custom);
+
+ // XXX: This can be change to Custom, once ExpandVectorStores can
+ // handle 64-bit stores.
+ setTruncStoreAction(MVT::v4i32, MVT::v4i16, Expand);
+
+ setTruncStoreAction(MVT::i64, MVT::i16, Expand);
+ setTruncStoreAction(MVT::i64, MVT::i8, Expand);
+ setTruncStoreAction(MVT::i64, MVT::i1, Expand);
+ setTruncStoreAction(MVT::v2i64, MVT::v2i1, Expand);
+ setTruncStoreAction(MVT::v4i64, MVT::v4i1, Expand);
+
+
setOperationAction(ISD::LOAD, MVT::f32, Promote);
AddPromotedToType(ISD::LOAD, MVT::f32, MVT::i32);
+ setOperationAction(ISD::LOAD, MVT::v2f32, Promote);
+ AddPromotedToType(ISD::LOAD, MVT::v2f32, MVT::v2i32);
+
setOperationAction(ISD::LOAD, MVT::v4f32, Promote);
AddPromotedToType(ISD::LOAD, MVT::v4f32, MVT::v4i32);
+ setOperationAction(ISD::LOAD, MVT::v8f32, Promote);
+ AddPromotedToType(ISD::LOAD, MVT::v8f32, MVT::v8i32);
+
+ setOperationAction(ISD::LOAD, MVT::v16f32, Promote);
+ AddPromotedToType(ISD::LOAD, MVT::v16f32, MVT::v16i32);
+
+ setOperationAction(ISD::LOAD, MVT::f64, Promote);
+ AddPromotedToType(ISD::LOAD, MVT::f64, MVT::i64);
+
+ setOperationAction(ISD::LOAD, MVT::v2f64, Promote);
+ AddPromotedToType(ISD::LOAD, MVT::v2f64, MVT::v2i64);
+
+ setOperationAction(ISD::CONCAT_VECTORS, MVT::v4i32, Custom);
+ setOperationAction(ISD::CONCAT_VECTORS, MVT::v4f32, Custom);
+ setOperationAction(ISD::CONCAT_VECTORS, MVT::v8i32, Custom);
+ setOperationAction(ISD::CONCAT_VECTORS, MVT::v8f32, Custom);
+ setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v2f32, Custom);
+ setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v2i32, Custom);
+ setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v4f32, Custom);
+ setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v4i32, Custom);
+ setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v8f32, Custom);
+ setOperationAction(ISD::EXTRACT_SUBVECTOR, MVT::v8i32, Custom);
+
+ setLoadExtAction(ISD::EXTLOAD, MVT::v2i8, Expand);
+ setLoadExtAction(ISD::SEXTLOAD, MVT::v2i8, Expand);
+ setLoadExtAction(ISD::ZEXTLOAD, MVT::v2i8, Expand);
+ setLoadExtAction(ISD::EXTLOAD, MVT::v4i8, Expand);
+ setLoadExtAction(ISD::SEXTLOAD, MVT::v4i8, Expand);
+ setLoadExtAction(ISD::ZEXTLOAD, MVT::v4i8, Expand);
+ setLoadExtAction(ISD::EXTLOAD, MVT::v2i16, Expand);
+ setLoadExtAction(ISD::SEXTLOAD, MVT::v2i16, Expand);
+ setLoadExtAction(ISD::ZEXTLOAD, MVT::v2i16, Expand);
+ setLoadExtAction(ISD::EXTLOAD, MVT::v4i16, Expand);
+ setLoadExtAction(ISD::SEXTLOAD, MVT::v4i16, Expand);
+ setLoadExtAction(ISD::ZEXTLOAD, MVT::v4i16, Expand);
+
+ setOperationAction(ISD::BR_CC, MVT::i1, Expand);
+
+ setOperationAction(ISD::SELECT_CC, MVT::i64, Expand);
+
+ setOperationAction(ISD::FNEG, MVT::v2f32, Expand);
+ setOperationAction(ISD::FNEG, MVT::v4f32, Expand);
+
+ setOperationAction(ISD::UINT_TO_FP, MVT::i64, Custom);
+
setOperationAction(ISD::MUL, MVT::i64, Expand);
+ setOperationAction(ISD::SUB, MVT::i64, Expand);
setOperationAction(ISD::UDIV, MVT::i32, Expand);
setOperationAction(ISD::UDIVREM, MVT::i32, Custom);
+ setOperationAction(ISD::UDIVREM, MVT::i64, Custom);
setOperationAction(ISD::UREM, MVT::i32, Expand);
+ setOperationAction(ISD::VSELECT, MVT::v2f32, Expand);
+ setOperationAction(ISD::VSELECT, MVT::v4f32, Expand);
+
+ static const MVT::SimpleValueType IntTypes[] = {
+ MVT::v2i32, MVT::v4i32
+ };
+ const size_t NumIntTypes = array_lengthof(IntTypes);
+
+ for (unsigned int x = 0; x < NumIntTypes; ++x) {
+ MVT::SimpleValueType VT = IntTypes[x];
+ //Expand the following operations for the current type by default
+ setOperationAction(ISD::ADD, VT, Expand);
+ setOperationAction(ISD::AND, VT, Expand);
+ setOperationAction(ISD::FP_TO_SINT, VT, Expand);
+ setOperationAction(ISD::FP_TO_UINT, VT, Expand);
+ setOperationAction(ISD::MUL, VT, Expand);
+ setOperationAction(ISD::OR, VT, Expand);
+ setOperationAction(ISD::SHL, VT, Expand);
+ setOperationAction(ISD::SINT_TO_FP, VT, Expand);
+ setOperationAction(ISD::SRL, VT, Expand);
+ setOperationAction(ISD::SRA, VT, Expand);
+ setOperationAction(ISD::SUB, VT, Expand);
+ setOperationAction(ISD::UDIV, VT, Expand);
+ setOperationAction(ISD::UINT_TO_FP, VT, Expand);
+ setOperationAction(ISD::UREM, VT, Expand);
+ setOperationAction(ISD::SELECT, VT, Expand);
+ setOperationAction(ISD::VSELECT, VT, Expand);
+ setOperationAction(ISD::XOR, VT, Expand);
+ }
+
+ static const MVT::SimpleValueType FloatTypes[] = {
+ MVT::v2f32, MVT::v4f32
+ };
+ const size_t NumFloatTypes = array_lengthof(FloatTypes);
+
+ for (unsigned int x = 0; x < NumFloatTypes; ++x) {
+ MVT::SimpleValueType VT = FloatTypes[x];
+ setOperationAction(ISD::FABS, VT, Expand);
+ setOperationAction(ISD::FADD, VT, Expand);
+ setOperationAction(ISD::FCOS, VT, Expand);
+ setOperationAction(ISD::FDIV, VT, Expand);
+ setOperationAction(ISD::FPOW, VT, Expand);
+ setOperationAction(ISD::FFLOOR, VT, Expand);
+ setOperationAction(ISD::FTRUNC, VT, Expand);
+ setOperationAction(ISD::FMUL, VT, Expand);
+ setOperationAction(ISD::FRINT, VT, Expand);
+ setOperationAction(ISD::FSQRT, VT, Expand);
+ setOperationAction(ISD::FSIN, VT, Expand);
+ setOperationAction(ISD::FSUB, VT, Expand);
+ setOperationAction(ISD::SELECT, VT, Expand);
+ }
+
+ setTargetDAGCombine(ISD::MUL);
+ setTargetDAGCombine(ISD::SELECT_CC);
+}
+
+//===----------------------------------------------------------------------===//
+// Target Information
+//===----------------------------------------------------------------------===//
+
+MVT AMDGPUTargetLowering::getVectorIdxTy() const {
+ return MVT::i32;
+}
+
+bool AMDGPUTargetLowering::isLoadBitCastBeneficial(EVT LoadTy,
+ EVT CastTy) const {
+ if (LoadTy.getSizeInBits() != CastTy.getSizeInBits())
+ return true;
+
+ unsigned LScalarSize = LoadTy.getScalarType().getSizeInBits();
+ unsigned CastScalarSize = CastTy.getScalarType().getSizeInBits();
+
+ return ((LScalarSize <= CastScalarSize) ||
+ (CastScalarSize >= 32) ||
+ (LScalarSize < 32));
+}
+
+//===---------------------------------------------------------------------===//
+// Target Properties
+//===---------------------------------------------------------------------===//
+
+bool AMDGPUTargetLowering::isFAbsFree(EVT VT) const {
+ assert(VT.isFloatingPoint());
+ return VT == MVT::f32;
+}
+
+bool AMDGPUTargetLowering::isFNegFree(EVT VT) const {
+ assert(VT.isFloatingPoint());
+ return VT == MVT::f32;
+}
+
+bool AMDGPUTargetLowering::isTruncateFree(EVT Source, EVT Dest) const {
+ // Truncate is just accessing a subregister.
+ return Dest.bitsLT(Source) && (Dest.getSizeInBits() % 32 == 0);
+}
+
+bool AMDGPUTargetLowering::isTruncateFree(Type *Source, Type *Dest) const {
+ // Truncate is just accessing a subregister.
+ return Dest->getPrimitiveSizeInBits() < Source->getPrimitiveSizeInBits() &&
+ (Dest->getPrimitiveSizeInBits() % 32 == 0);
+}
+
+bool AMDGPUTargetLowering::isZExtFree(Type *Src, Type *Dest) const {
+ const DataLayout *DL = getDataLayout();
+ unsigned SrcSize = DL->getTypeSizeInBits(Src->getScalarType());
+ unsigned DestSize = DL->getTypeSizeInBits(Dest->getScalarType());
+
+ return SrcSize == 32 && DestSize == 64;
+}
+
+bool AMDGPUTargetLowering::isZExtFree(EVT Src, EVT Dest) const {
+ // Any register load of a 64-bit value really requires 2 32-bit moves. For all
+ // practical purposes, the extra mov 0 to load a 64-bit is free. As used,
+ // this will enable reducing 64-bit operations the 32-bit, which is always
+ // good.
+ return Src == MVT::i32 && Dest == MVT::i64;
+}
+
+bool AMDGPUTargetLowering::isNarrowingProfitable(EVT SrcVT, EVT DestVT) const {
+ // There aren't really 64-bit registers, but pairs of 32-bit ones and only a
+ // limited number of native 64-bit operations. Shrinking an operation to fit
+ // in a single 32-bit register should always be helpful. As currently used,
+ // this is much less general than the name suggests, and is only used in
+ // places trying to reduce the sizes of loads. Shrinking loads to < 32-bits is
+ // not profitable, and may actually be harmful.
+ return SrcVT.getSizeInBits() > 32 && DestVT.getSizeInBits() == 32;
}
//===---------------------------------------------------------------------===//
bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
- DebugLoc DL, SelectionDAG &DAG) const {
+ SDLoc DL, SelectionDAG &DAG) const {
return DAG.getNode(AMDGPUISD::RET_FLAG, DL, MVT::Other, Chain);
}
// Target specific lowering
//===---------------------------------------------------------------------===//
+SDValue AMDGPUTargetLowering::LowerCall(CallLoweringInfo &CLI,
+ SmallVectorImpl<SDValue> &InVals) const {
+ SDValue Callee = CLI.Callee;
+ SelectionDAG &DAG = CLI.DAG;
+
+ const Function &Fn = *DAG.getMachineFunction().getFunction();
+
+ StringRef FuncName("<unknown>");
+
+ if (const ExternalSymbolSDNode *G = dyn_cast<ExternalSymbolSDNode>(Callee))
+ FuncName = G->getSymbol();
+ else if (const GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
+ FuncName = G->getGlobal()->getName();
+
+ DiagnosticInfoUnsupported NoCalls(Fn, "call to function " + FuncName);
+ DAG.getContext()->diagnose(NoCalls);
+ return SDValue();
+}
+
SDValue AMDGPUTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG)
const {
switch (Op.getOpcode()) {
default:
Op.getNode()->dump();
- assert(0 && "Custom lowering code for this"
- "instruction is not implemented yet!");
+ llvm_unreachable("Custom lowering code for this"
+ "instruction is not implemented yet!");
break;
// AMDIL DAG lowering
case ISD::SDIV: return LowerSDIV(Op, DAG);
case ISD::SIGN_EXTEND_INREG: return LowerSIGN_EXTEND_INREG(Op, DAG);
case ISD::BRCOND: return LowerBRCOND(Op, DAG);
// AMDGPU DAG lowering
+ case ISD::CONCAT_VECTORS: return LowerCONCAT_VECTORS(Op, DAG);
+ case ISD::EXTRACT_SUBVECTOR: return LowerEXTRACT_SUBVECTOR(Op, DAG);
+ case ISD::FrameIndex: return LowerFrameIndex(Op, DAG);
case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG);
case ISD::UDIVREM: return LowerUDIVREM(Op, DAG);
+ case ISD::UINT_TO_FP: return LowerUINT_TO_FP(Op, DAG);
}
return Op;
}
+void AMDGPUTargetLowering::ReplaceNodeResults(SDNode *N,
+ SmallVectorImpl<SDValue> &Results,
+ SelectionDAG &DAG) const {
+ switch (N->getOpcode()) {
+ case ISD::SIGN_EXTEND_INREG:
+ // Different parts of legalization seem to interpret which type of
+ // sign_extend_inreg is the one to check for custom lowering. The extended
+ // from type is what really matters, but some places check for custom
+ // lowering of the result type. This results in trying to use
+ // ReplaceNodeResults to sext_in_reg to an illegal type, so we'll just do
+ // nothing here and let the illegal result integer be handled normally.
+ return;
+ case ISD::UDIV: {
+ SDValue Op = SDValue(N, 0);
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+ SDValue UDIVREM = DAG.getNode(ISD::UDIVREM, DL, DAG.getVTList(VT, VT),
+ N->getOperand(0), N->getOperand(1));
+ Results.push_back(UDIVREM);
+ break;
+ }
+ case ISD::UREM: {
+ SDValue Op = SDValue(N, 0);
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+ SDValue UDIVREM = DAG.getNode(ISD::UDIVREM, DL, DAG.getVTList(VT, VT),
+ N->getOperand(0), N->getOperand(1));
+ Results.push_back(UDIVREM.getValue(1));
+ break;
+ }
+ case ISD::UDIVREM: {
+ SDValue Op = SDValue(N, 0);
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+ EVT HalfVT = VT.getHalfSizedIntegerVT(*DAG.getContext());
+
+ SDValue one = DAG.getConstant(1, HalfVT);
+ SDValue zero = DAG.getConstant(0, HalfVT);
+
+ //HiLo split
+ SDValue LHS = N->getOperand(0);
+ SDValue LHS_Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, LHS, zero);
+ SDValue LHS_Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, LHS, one);
+
+ SDValue RHS = N->getOperand(1);
+ SDValue RHS_Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, RHS, zero);
+ SDValue RHS_Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, RHS, one);
+
+ // Get Speculative values
+ SDValue DIV_Part = DAG.getNode(ISD::UDIV, DL, HalfVT, LHS_Hi, RHS_Lo);
+ SDValue REM_Part = DAG.getNode(ISD::UREM, DL, HalfVT, LHS_Hi, RHS_Lo);
+
+ SDValue REM_Hi = zero;
+ SDValue REM_Lo = DAG.getSelectCC(DL, RHS_Hi, zero, REM_Part, LHS_Hi, ISD::SETEQ);
+
+ SDValue DIV_Hi = DAG.getSelectCC(DL, RHS_Hi, zero, DIV_Part, zero, ISD::SETEQ);
+ SDValue DIV_Lo = zero;
+
+ const unsigned halfBitWidth = HalfVT.getSizeInBits();
+
+ for (unsigned i = 0; i < halfBitWidth; ++i) {
+ SDValue POS = DAG.getConstant(halfBitWidth - i - 1, HalfVT);
+ // Get Value of high bit
+ SDValue HBit;
+ if (halfBitWidth == 32 && Subtarget->hasBFE()) {
+ HBit = DAG.getNode(AMDGPUISD::BFE_U32, DL, HalfVT, LHS_Lo, POS, one);
+ } else {
+ HBit = DAG.getNode(ISD::SRL, DL, HalfVT, LHS_Lo, POS);
+ HBit = DAG.getNode(ISD::AND, DL, HalfVT, HBit, one);
+ }
+
+ SDValue Carry = DAG.getNode(ISD::SRL, DL, HalfVT, REM_Lo,
+ DAG.getConstant(halfBitWidth - 1, HalfVT));
+ REM_Hi = DAG.getNode(ISD::SHL, DL, HalfVT, REM_Hi, one);
+ REM_Hi = DAG.getNode(ISD::OR, DL, HalfVT, REM_Hi, Carry);
+
+ REM_Lo = DAG.getNode(ISD::SHL, DL, HalfVT, REM_Lo, one);
+ REM_Lo = DAG.getNode(ISD::OR, DL, HalfVT, REM_Lo, HBit);
+
+
+ SDValue REM = DAG.getNode(ISD::BUILD_PAIR, DL, VT, REM_Lo, REM_Hi);
+
+ SDValue BIT = DAG.getConstant(1 << (halfBitWidth - i - 1), HalfVT);
+ SDValue realBIT = DAG.getSelectCC(DL, REM, RHS, BIT, zero, ISD::SETGE);
+
+ DIV_Lo = DAG.getNode(ISD::OR, DL, HalfVT, DIV_Lo, realBIT);
+
+ // Update REM
+
+ SDValue REM_sub = DAG.getNode(ISD::SUB, DL, VT, REM, RHS);
+
+ REM = DAG.getSelectCC(DL, REM, RHS, REM_sub, REM, ISD::SETGE);
+ REM_Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, REM, zero);
+ REM_Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, REM, one);
+ }
+
+ SDValue REM = DAG.getNode(ISD::BUILD_PAIR, DL, VT, REM_Lo, REM_Hi);
+ SDValue DIV = DAG.getNode(ISD::BUILD_PAIR, DL, VT, DIV_Lo, DIV_Hi);
+ Results.push_back(DIV);
+ Results.push_back(REM);
+ break;
+ }
+ default:
+ return;
+ }
+}
+
+SDValue AMDGPUTargetLowering::LowerConstantInitializer(const Constant* Init,
+ const GlobalValue *GV,
+ const SDValue &InitPtr,
+ SDValue Chain,
+ SelectionDAG &DAG) const {
+ const DataLayout *TD = getTargetMachine().getDataLayout();
+ SDLoc DL(InitPtr);
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(Init)) {
+ EVT VT = EVT::getEVT(CI->getType());
+ PointerType *PtrTy = PointerType::get(CI->getType(), 0);
+ return DAG.getStore(Chain, DL, DAG.getConstant(*CI, VT), InitPtr,
+ MachinePointerInfo(UndefValue::get(PtrTy)), false, false,
+ TD->getPrefTypeAlignment(CI->getType()));
+ } else 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, VT), InitPtr,
+ MachinePointerInfo(UndefValue::get(PtrTy)), false, false,
+ TD->getPrefTypeAlignment(CFP->getType()));
+ } else if (Init->getType()->isAggregateType()) {
+ EVT PtrVT = InitPtr.getValueType();
+ unsigned NumElements = Init->getType()->getArrayNumElements();
+ SmallVector<SDValue, 8> Chains;
+ for (unsigned i = 0; i < NumElements; ++i) {
+ SDValue Offset = DAG.getConstant(i * TD->getTypeAllocSize(
+ Init->getType()->getArrayElementType()), PtrVT);
+ SDValue Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, InitPtr, Offset);
+ Chains.push_back(LowerConstantInitializer(Init->getAggregateElement(i),
+ GV, Ptr, Chain, DAG));
+ }
+ return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Chains);
+ } else {
+ Init->dump();
+ llvm_unreachable("Unhandled constant initializer");
+ }
+}
+
+SDValue AMDGPUTargetLowering::LowerGlobalAddress(AMDGPUMachineFunction* MFI,
+ SDValue Op,
+ SelectionDAG &DAG) const {
+
+ const DataLayout *TD = getTargetMachine().getDataLayout();
+ GlobalAddressSDNode *G = cast<GlobalAddressSDNode>(Op);
+ const GlobalValue *GV = G->getGlobal();
+
+ switch (G->getAddressSpace()) {
+ default: llvm_unreachable("Global Address lowering not implemented for this "
+ "address space");
+ case AMDGPUAS::LOCAL_ADDRESS: {
+ // XXX: What does the value of G->getOffset() mean?
+ assert(G->getOffset() == 0 &&
+ "Do not know what to do with an non-zero offset");
+
+ unsigned Offset;
+ if (MFI->LocalMemoryObjects.count(GV) == 0) {
+ uint64_t Size = TD->getTypeAllocSize(GV->getType()->getElementType());
+ Offset = MFI->LDSSize;
+ MFI->LocalMemoryObjects[GV] = Offset;
+ // XXX: Account for alignment?
+ MFI->LDSSize += Size;
+ } else {
+ Offset = MFI->LocalMemoryObjects[GV];
+ }
+
+ return DAG.getConstant(Offset, getPointerTy(G->getAddressSpace()));
+ }
+ case AMDGPUAS::CONSTANT_ADDRESS: {
+ MachineFrameInfo *FrameInfo = DAG.getMachineFunction().getFrameInfo();
+ Type *EltType = GV->getType()->getElementType();
+ unsigned Size = TD->getTypeAllocSize(EltType);
+ unsigned Alignment = TD->getPrefTypeAlignment(EltType);
+
+ const GlobalVariable *Var = dyn_cast<GlobalVariable>(GV);
+ const Constant *Init = Var->getInitializer();
+ int FI = FrameInfo->CreateStackObject(Size, Alignment, false);
+ SDValue InitPtr = DAG.getFrameIndex(FI,
+ getPointerTy(AMDGPUAS::PRIVATE_ADDRESS));
+ SmallVector<SDNode*, 8> WorkList;
+
+ for (SDNode::use_iterator I = DAG.getEntryNode()->use_begin(),
+ E = DAG.getEntryNode()->use_end(); I != E; ++I) {
+ if (I->getOpcode() != AMDGPUISD::REGISTER_LOAD && I->getOpcode() != ISD::LOAD)
+ continue;
+ WorkList.push_back(*I);
+ }
+ SDValue Chain = LowerConstantInitializer(Init, GV, InitPtr, DAG.getEntryNode(), DAG);
+ for (SmallVector<SDNode*, 8>::iterator I = WorkList.begin(),
+ E = WorkList.end(); I != E; ++I) {
+ SmallVector<SDValue, 8> Ops;
+ Ops.push_back(Chain);
+ for (unsigned i = 1; i < (*I)->getNumOperands(); ++i) {
+ Ops.push_back((*I)->getOperand(i));
+ }
+ DAG.UpdateNodeOperands(*I, Ops);
+ }
+ return DAG.getZExtOrTrunc(InitPtr, SDLoc(Op),
+ getPointerTy(AMDGPUAS::CONSTANT_ADDRESS));
+ }
+ }
+}
+
+SDValue AMDGPUTargetLowering::LowerCONCAT_VECTORS(SDValue Op,
+ SelectionDAG &DAG) const {
+ SmallVector<SDValue, 8> Args;
+ SDValue A = Op.getOperand(0);
+ SDValue B = Op.getOperand(1);
+
+ DAG.ExtractVectorElements(A, Args);
+ DAG.ExtractVectorElements(B, Args);
+
+ return DAG.getNode(ISD::BUILD_VECTOR, SDLoc(Op), Op.getValueType(), Args);
+}
+
+SDValue AMDGPUTargetLowering::LowerEXTRACT_SUBVECTOR(SDValue Op,
+ SelectionDAG &DAG) const {
+
+ SmallVector<SDValue, 8> Args;
+ unsigned Start = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
+ EVT VT = Op.getValueType();
+ DAG.ExtractVectorElements(Op.getOperand(0), Args, Start,
+ VT.getVectorNumElements());
+
+ return DAG.getNode(ISD::BUILD_VECTOR, SDLoc(Op), Op.getValueType(), Args);
+}
+
+SDValue AMDGPUTargetLowering::LowerFrameIndex(SDValue Op,
+ SelectionDAG &DAG) const {
+
+ MachineFunction &MF = DAG.getMachineFunction();
+ const AMDGPUFrameLowering *TFL =
+ static_cast<const AMDGPUFrameLowering*>(getTargetMachine().getFrameLowering());
+
+ FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(Op);
+ assert(FIN);
+
+ unsigned FrameIndex = FIN->getIndex();
+ unsigned Offset = TFL->getFrameIndexOffset(MF, FrameIndex);
+ return DAG.getConstant(Offset * 4 * TFL->getStackWidth(MF),
+ Op.getValueType());
+}
+
SDValue AMDGPUTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
SelectionDAG &DAG) const {
unsigned IntrinsicID = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
- DebugLoc DL = Op.getDebugLoc();
+ SDLoc DL(Op);
EVT VT = Op.getValueType();
switch (IntrinsicID) {
case AMDGPUIntrinsic::AMDGPU_umin:
return DAG.getNode(AMDGPUISD::UMIN, DL, VT, Op.getOperand(1),
Op.getOperand(2));
+
+ case AMDGPUIntrinsic::AMDGPU_bfe_i32:
+ return DAG.getNode(AMDGPUISD::BFE_I32, DL, VT,
+ Op.getOperand(1),
+ Op.getOperand(2),
+ Op.getOperand(3));
+
+ case AMDGPUIntrinsic::AMDGPU_bfe_u32:
+ return DAG.getNode(AMDGPUISD::BFE_U32, DL, VT,
+ Op.getOperand(1),
+ Op.getOperand(2),
+ Op.getOperand(3));
+
+ case AMDGPUIntrinsic::AMDGPU_bfi:
+ return DAG.getNode(AMDGPUISD::BFI, DL, VT,
+ Op.getOperand(1),
+ Op.getOperand(2),
+ Op.getOperand(3));
+
+ case AMDGPUIntrinsic::AMDGPU_bfm:
+ return DAG.getNode(AMDGPUISD::BFM, DL, VT,
+ Op.getOperand(1),
+ Op.getOperand(2));
+
case AMDGPUIntrinsic::AMDIL_round_nearest:
return DAG.getNode(ISD::FRINT, DL, VT, Op.getOperand(1));
}
SDValue AMDGPUTargetLowering::LowerIntrinsicIABS(SDValue Op,
SelectionDAG &DAG) const {
- DebugLoc DL = Op.getDebugLoc();
+ SDLoc DL(Op);
EVT VT = Op.getValueType();
SDValue Neg = DAG.getNode(ISD::SUB, DL, VT, DAG.getConstant(0, VT),
Op.getOperand(1));
/// LRP(a, b, c) = muladd(a, b, (1 - a) * c)
SDValue AMDGPUTargetLowering::LowerIntrinsicLRP(SDValue Op,
SelectionDAG &DAG) const {
- DebugLoc DL = Op.getDebugLoc();
+ SDLoc DL(Op);
EVT VT = Op.getValueType();
SDValue OneSubA = DAG.getNode(ISD::FSUB, DL, VT,
DAG.getConstantFP(1.0f, MVT::f32),
}
/// \brief Generate Min/Max node
-SDValue AMDGPUTargetLowering::LowerMinMax(SDValue Op,
+SDValue AMDGPUTargetLowering::CombineMinMax(SDNode *N,
SelectionDAG &DAG) const {
- DebugLoc DL = Op.getDebugLoc();
- EVT VT = Op.getValueType();
+ SDLoc DL(N);
+ EVT VT = N->getValueType(0);
- SDValue LHS = Op.getOperand(0);
- SDValue RHS = Op.getOperand(1);
- SDValue True = Op.getOperand(2);
- SDValue False = Op.getOperand(3);
- SDValue CC = Op.getOperand(4);
+ SDValue LHS = N->getOperand(0);
+ SDValue RHS = N->getOperand(1);
+ SDValue True = N->getOperand(2);
+ SDValue False = N->getOperand(3);
+ SDValue CC = N->getOperand(4);
if (VT != MVT::f32 ||
!((LHS == True && RHS == False) || (LHS == False && RHS == True))) {
case ISD::SETTRUE2:
case ISD::SETUO:
case ISD::SETO:
- assert(0 && "Operation should already be optimised !");
+ llvm_unreachable("Operation should already be optimised!");
case ISD::SETULE:
case ISD::SETULT:
case ISD::SETOLE:
return DAG.getNode(AMDGPUISD::FMIN, DL, VT, LHS, RHS);
}
case ISD::SETCC_INVALID:
- assert(0 && "Invalid setcc condcode !");
+ llvm_unreachable("Invalid setcc condcode!");
}
- return Op;
+ return SDValue();
+}
+
+SDValue AMDGPUTargetLowering::SplitVectorLoad(const SDValue &Op,
+ SelectionDAG &DAG) const {
+ LoadSDNode *Load = dyn_cast<LoadSDNode>(Op);
+ EVT MemEltVT = Load->getMemoryVT().getVectorElementType();
+ EVT EltVT = Op.getValueType().getVectorElementType();
+ EVT PtrVT = Load->getBasePtr().getValueType();
+ unsigned NumElts = Load->getMemoryVT().getVectorNumElements();
+ SmallVector<SDValue, 8> Loads;
+ SDLoc SL(Op);
+
+ for (unsigned i = 0, e = NumElts; i != e; ++i) {
+ SDValue Ptr = DAG.getNode(ISD::ADD, SL, PtrVT, Load->getBasePtr(),
+ DAG.getConstant(i * (MemEltVT.getSizeInBits() / 8), PtrVT));
+ Loads.push_back(DAG.getExtLoad(Load->getExtensionType(), SL, EltVT,
+ Load->getChain(), Ptr,
+ MachinePointerInfo(Load->getMemOperand()->getValue()),
+ MemEltVT, Load->isVolatile(), Load->isNonTemporal(),
+ Load->getAlignment()));
+ }
+ return DAG.getNode(ISD::BUILD_VECTOR, SL, Op.getValueType(), Loads);
+}
+
+SDValue AMDGPUTargetLowering::MergeVectorStore(const SDValue &Op,
+ SelectionDAG &DAG) const {
+ StoreSDNode *Store = dyn_cast<StoreSDNode>(Op);
+ EVT MemVT = Store->getMemoryVT();
+ unsigned MemBits = MemVT.getSizeInBits();
+
+ // Byte stores are really expensive, so if possible, try to pack 32-bit vector
+ // truncating store into an i32 store.
+ // XXX: We could also handle optimize other vector bitwidths.
+ if (!MemVT.isVector() || MemBits > 32) {
+ return SDValue();
+ }
+
+ SDLoc DL(Op);
+ SDValue Value = Store->getValue();
+ EVT VT = Value.getValueType();
+ EVT ElemVT = VT.getVectorElementType();
+ SDValue Ptr = Store->getBasePtr();
+ EVT MemEltVT = MemVT.getVectorElementType();
+ unsigned MemEltBits = MemEltVT.getSizeInBits();
+ unsigned MemNumElements = MemVT.getVectorNumElements();
+ unsigned PackedSize = MemVT.getStoreSizeInBits();
+ SDValue Mask = DAG.getConstant((1 << MemEltBits) - 1, MVT::i32);
+
+ assert(Value.getValueType().getScalarSizeInBits() >= 32);
+
+ SDValue PackedValue;
+ for (unsigned i = 0; i < MemNumElements; ++i) {
+ SDValue Elt = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ElemVT, Value,
+ DAG.getConstant(i, MVT::i32));
+ Elt = DAG.getZExtOrTrunc(Elt, DL, MVT::i32);
+ Elt = DAG.getNode(ISD::AND, DL, MVT::i32, Elt, Mask); // getZeroExtendInReg
+
+ SDValue Shift = DAG.getConstant(MemEltBits * i, MVT::i32);
+ Elt = DAG.getNode(ISD::SHL, DL, MVT::i32, Elt, Shift);
+
+ if (i == 0) {
+ PackedValue = Elt;
+ } else {
+ PackedValue = DAG.getNode(ISD::OR, DL, MVT::i32, PackedValue, Elt);
+ }
+ }
+
+ if (PackedSize < 32) {
+ EVT PackedVT = EVT::getIntegerVT(*DAG.getContext(), PackedSize);
+ return DAG.getTruncStore(Store->getChain(), DL, PackedValue, Ptr,
+ Store->getMemOperand()->getPointerInfo(),
+ PackedVT,
+ Store->isNonTemporal(), Store->isVolatile(),
+ Store->getAlignment());
+ }
+
+ return DAG.getStore(Store->getChain(), DL, PackedValue, Ptr,
+ Store->getMemOperand()->getPointerInfo(),
+ Store->isVolatile(), Store->isNonTemporal(),
+ Store->getAlignment());
+}
+
+SDValue AMDGPUTargetLowering::SplitVectorStore(SDValue Op,
+ SelectionDAG &DAG) const {
+ StoreSDNode *Store = cast<StoreSDNode>(Op);
+ EVT MemEltVT = Store->getMemoryVT().getVectorElementType();
+ EVT EltVT = Store->getValue().getValueType().getVectorElementType();
+ EVT PtrVT = Store->getBasePtr().getValueType();
+ unsigned NumElts = Store->getMemoryVT().getVectorNumElements();
+ SDLoc SL(Op);
+
+ SmallVector<SDValue, 8> Chains;
+
+ for (unsigned i = 0, e = NumElts; i != e; ++i) {
+ SDValue Val = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SL, EltVT,
+ Store->getValue(), DAG.getConstant(i, MVT::i32));
+ SDValue Ptr = DAG.getNode(ISD::ADD, SL, PtrVT,
+ Store->getBasePtr(),
+ DAG.getConstant(i * (MemEltVT.getSizeInBits() / 8),
+ PtrVT));
+ Chains.push_back(DAG.getTruncStore(Store->getChain(), SL, Val, Ptr,
+ MachinePointerInfo(Store->getMemOperand()->getValue()),
+ MemEltVT, Store->isVolatile(), Store->isNonTemporal(),
+ Store->getAlignment()));
+ }
+ return DAG.getNode(ISD::TokenFactor, SL, MVT::Other, Chains);
}
+SDValue AMDGPUTargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ LoadSDNode *Load = cast<LoadSDNode>(Op);
+ ISD::LoadExtType ExtType = Load->getExtensionType();
+ EVT VT = Op.getValueType();
+ EVT MemVT = Load->getMemoryVT();
+
+ if (ExtType != ISD::NON_EXTLOAD && !VT.isVector() && VT.getSizeInBits() > 32) {
+ // We can do the extload to 32-bits, and then need to separately extend to
+ // 64-bits.
+
+ SDValue ExtLoad32 = DAG.getExtLoad(ExtType, DL, MVT::i32,
+ Load->getChain(),
+ Load->getBasePtr(),
+ MemVT,
+ Load->getMemOperand());
+ return DAG.getNode(ISD::getExtForLoadExtType(ExtType), DL, VT, ExtLoad32);
+ }
+
+ if (ExtType == ISD::NON_EXTLOAD && VT.getSizeInBits() < 32) {
+ assert(VT == MVT::i1 && "Only i1 non-extloads expected");
+ // FIXME: Copied from PPC
+ // First, load into 32 bits, then truncate to 1 bit.
+
+ SDValue Chain = Load->getChain();
+ SDValue BasePtr = Load->getBasePtr();
+ MachineMemOperand *MMO = Load->getMemOperand();
+
+ SDValue NewLD = DAG.getExtLoad(ISD::EXTLOAD, DL, MVT::i32, Chain,
+ BasePtr, MVT::i8, MMO);
+ return DAG.getNode(ISD::TRUNCATE, DL, VT, NewLD);
+ }
+
+ // Lower loads constant address space global variable loads
+ if (Load->getAddressSpace() == AMDGPUAS::CONSTANT_ADDRESS &&
+ isa<GlobalVariable>(
+ GetUnderlyingObject(Load->getMemOperand()->getValue()))) {
+
+ SDValue Ptr = DAG.getZExtOrTrunc(Load->getBasePtr(), DL,
+ getPointerTy(AMDGPUAS::PRIVATE_ADDRESS));
+ Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, Ptr,
+ DAG.getConstant(2, MVT::i32));
+ return DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, Op.getValueType(),
+ Load->getChain(), Ptr,
+ DAG.getTargetConstant(0, MVT::i32), Op.getOperand(2));
+ }
+
+ 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);
+ return DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, MVT::i32, Ret, MemEltVTNode);
+ }
+
+ return DAG.getZeroExtendInReg(Ret, DL, MemEltVT);
+}
+
+SDValue AMDGPUTargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ SDValue Result = AMDGPUTargetLowering::MergeVectorStore(Op, DAG);
+ if (Result.getNode()) {
+ return Result;
+ }
+
+ StoreSDNode *Store = cast<StoreSDNode>(Op);
+ SDValue Chain = Store->getChain();
+ if ((Store->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS ||
+ Store->getAddressSpace() == AMDGPUAS::PRIVATE_ADDRESS) &&
+ Store->getValue().getValueType().isVector()) {
+ return SplitVectorStore(Op, DAG);
+ }
+
+ EVT MemVT = Store->getMemoryVT();
+ if (Store->getAddressSpace() == AMDGPUAS::PRIVATE_ADDRESS &&
+ MemVT.bitsLT(MVT::i32)) {
+ unsigned Mask = 0;
+ if (Store->getMemoryVT() == MVT::i8) {
+ Mask = 0xff;
+ } else if (Store->getMemoryVT() == MVT::i16) {
+ Mask = 0xffff;
+ }
+ SDValue BasePtr = Store->getBasePtr();
+ SDValue Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, BasePtr,
+ DAG.getConstant(2, MVT::i32));
+ SDValue Dst = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, MVT::i32,
+ Chain, Ptr, DAG.getTargetConstant(0, MVT::i32));
+
+ SDValue ByteIdx = DAG.getNode(ISD::AND, DL, MVT::i32, BasePtr,
+ DAG.getConstant(0x3, MVT::i32));
+
+ SDValue ShiftAmt = DAG.getNode(ISD::SHL, DL, MVT::i32, ByteIdx,
+ DAG.getConstant(3, MVT::i32));
+
+ SDValue SExtValue = DAG.getNode(ISD::SIGN_EXTEND, DL, MVT::i32,
+ Store->getValue());
+
+ SDValue MaskedValue = DAG.getZeroExtendInReg(SExtValue, DL, MemVT);
+
+ SDValue ShiftedValue = DAG.getNode(ISD::SHL, DL, MVT::i32,
+ MaskedValue, ShiftAmt);
+
+ SDValue DstMask = DAG.getNode(ISD::SHL, DL, MVT::i32, DAG.getConstant(Mask, MVT::i32),
+ ShiftAmt);
+ DstMask = DAG.getNode(ISD::XOR, DL, MVT::i32, DstMask,
+ DAG.getConstant(0xffffffff, MVT::i32));
+ Dst = DAG.getNode(ISD::AND, DL, MVT::i32, Dst, DstMask);
+ SDValue Value = DAG.getNode(ISD::OR, DL, MVT::i32, Dst, ShiftedValue);
+ return DAG.getNode(AMDGPUISD::REGISTER_STORE, DL, MVT::Other,
+ Chain, Value, Ptr, DAG.getTargetConstant(0, MVT::i32));
+ }
+ return SDValue();
+}
SDValue AMDGPUTargetLowering::LowerUDIVREM(SDValue Op,
SelectionDAG &DAG) const {
- DebugLoc DL = Op.getDebugLoc();
+ SDLoc DL(Op);
EVT VT = Op.getValueType();
SDValue Num = Op.getOperand(0);
SDValue Den = Op.getOperand(1);
- SmallVector<SDValue, 8> Results;
-
// RCP = URECIP(Den) = 2^32 / Den + e
// e is rounding error.
SDValue RCP = DAG.getNode(AMDGPUISD::URECIP, DL, VT, Den);
SDValue Remainder_GE_Den = DAG.getSelectCC(DL, Remainder, Den,
DAG.getConstant(-1, VT),
DAG.getConstant(0, VT),
- ISD::SETGE);
- // Remainder_GE_Zero = (Remainder >= 0 ? -1 : 0)
- SDValue Remainder_GE_Zero = DAG.getSelectCC(DL, Remainder,
- DAG.getConstant(0, VT),
+ ISD::SETUGE);
+ // Remainder_GE_Zero = (Num >= Num_S_Remainder ? -1 : 0)
+ SDValue Remainder_GE_Zero = DAG.getSelectCC(DL, Num,
+ Num_S_Remainder,
DAG.getConstant(-1, VT),
DAG.getConstant(0, VT),
- ISD::SETGE);
+ ISD::SETUGE);
// Tmp1 = Remainder_GE_Den & Remainder_GE_Zero
SDValue Tmp1 = DAG.getNode(ISD::AND, DL, VT, Remainder_GE_Den,
Remainder_GE_Zero);
// Rem = (Remainder_GE_Zero == 0 ? Remainder_A_Den : Rem)
Rem = DAG.getSelectCC(DL, Remainder_GE_Zero, DAG.getConstant(0, VT),
Remainder_A_Den, Rem, ISD::SETEQ);
- SDValue Ops[2];
- Ops[0] = Div;
- Ops[1] = Rem;
- return DAG.getMergeValues(Ops, 2, DL);
+ SDValue Ops[2] = {
+ Div,
+ Rem
+ };
+ return DAG.getMergeValues(Ops, DL);
+}
+
+SDValue AMDGPUTargetLowering::LowerUINT_TO_FP(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDValue S0 = Op.getOperand(0);
+ SDLoc DL(Op);
+ if (Op.getValueType() != MVT::f32 || S0.getValueType() != MVT::i64)
+ return SDValue();
+
+ // f32 uint_to_fp i64
+ SDValue Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, S0,
+ DAG.getConstant(0, MVT::i32));
+ SDValue FloatLo = DAG.getNode(ISD::UINT_TO_FP, DL, MVT::f32, Lo);
+ SDValue Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, S0,
+ DAG.getConstant(1, MVT::i32));
+ SDValue FloatHi = DAG.getNode(ISD::UINT_TO_FP, DL, MVT::f32, Hi);
+ FloatHi = DAG.getNode(ISD::FMUL, DL, MVT::f32, FloatHi,
+ DAG.getConstantFP(4294967296.0f, MVT::f32)); // 2^32
+ return DAG.getNode(ISD::FADD, DL, MVT::f32, FloatLo, FloatHi);
+
+}
+
+SDValue AMDGPUTargetLowering::ExpandSIGN_EXTEND_INREG(SDValue Op,
+ unsigned BitsDiff,
+ SelectionDAG &DAG) const {
+ MVT VT = Op.getSimpleValueType();
+ SDLoc DL(Op);
+ SDValue Shift = DAG.getConstant(BitsDiff, VT);
+ // Shift left by 'Shift' bits.
+ SDValue Shl = DAG.getNode(ISD::SHL, DL, VT, Op.getOperand(0), Shift);
+ // Signed shift Right by 'Shift' bits.
+ return DAG.getNode(ISD::SRA, DL, VT, Shl, Shift);
+}
+
+SDValue AMDGPUTargetLowering::LowerSIGN_EXTEND_INREG(SDValue Op,
+ SelectionDAG &DAG) const {
+ EVT ExtraVT = cast<VTSDNode>(Op.getOperand(1))->getVT();
+ MVT VT = Op.getSimpleValueType();
+ MVT ScalarVT = VT.getScalarType();
+
+ if (!VT.isVector())
+ return SDValue();
+
+ SDValue Src = Op.getOperand(0);
+ SDLoc DL(Op);
+
+ // TODO: Don't scalarize on Evergreen?
+ unsigned NElts = VT.getVectorNumElements();
+ SmallVector<SDValue, 8> Args;
+ DAG.ExtractVectorElements(Src, Args, 0, NElts);
+
+ SDValue VTOp = DAG.getValueType(ExtraVT.getScalarType());
+ for (unsigned I = 0; I < NElts; ++I)
+ Args[I] = DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, ScalarVT, Args[I], VTOp);
+
+ return DAG.getNode(ISD::BUILD_VECTOR, DL, VT, Args);
+}
+
+//===----------------------------------------------------------------------===//
+// Custom DAG optimizations
+//===----------------------------------------------------------------------===//
+
+static bool isU24(SDValue Op, SelectionDAG &DAG) {
+ APInt KnownZero, KnownOne;
+ EVT VT = Op.getValueType();
+ DAG.ComputeMaskedBits(Op, KnownZero, KnownOne);
+
+ return (VT.getSizeInBits() - KnownZero.countLeadingOnes()) <= 24;
+}
+
+static bool isI24(SDValue Op, SelectionDAG &DAG) {
+ EVT VT = Op.getValueType();
+
+ // In order for this to be a signed 24-bit value, bit 23, must
+ // be a sign bit.
+ return VT.getSizeInBits() >= 24 && // Types less than 24-bit should be treated
+ // as unsigned 24-bit values.
+ (VT.getSizeInBits() - DAG.ComputeNumSignBits(Op)) < 24;
+}
+
+static void simplifyI24(SDValue Op, TargetLowering::DAGCombinerInfo &DCI) {
+
+ SelectionDAG &DAG = DCI.DAG;
+ const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+ EVT VT = Op.getValueType();
+
+ APInt Demanded = APInt::getLowBitsSet(VT.getSizeInBits(), 24);
+ APInt KnownZero, KnownOne;
+ TargetLowering::TargetLoweringOpt TLO(DAG, true, true);
+ if (TLI.SimplifyDemandedBits(Op, Demanded, KnownZero, KnownOne, TLO))
+ DCI.CommitTargetLoweringOpt(TLO);
+}
+
+SDValue AMDGPUTargetLowering::PerformDAGCombine(SDNode *N,
+ DAGCombinerInfo &DCI) const {
+ SelectionDAG &DAG = DCI.DAG;
+ SDLoc DL(N);
+
+ switch(N->getOpcode()) {
+ default: break;
+ case ISD::MUL: {
+ EVT VT = N->getValueType(0);
+ SDValue N0 = N->getOperand(0);
+ SDValue N1 = N->getOperand(1);
+ SDValue Mul;
+
+ // FIXME: Add support for 24-bit multiply with 64-bit output on SI.
+ if (VT.isVector() || VT.getSizeInBits() > 32)
+ break;
+
+ if (Subtarget->hasMulU24() && isU24(N0, DAG) && isU24(N1, DAG)) {
+ N0 = DAG.getZExtOrTrunc(N0, DL, MVT::i32);
+ N1 = DAG.getZExtOrTrunc(N1, DL, MVT::i32);
+ Mul = DAG.getNode(AMDGPUISD::MUL_U24, DL, MVT::i32, N0, N1);
+ } else if (Subtarget->hasMulI24() && isI24(N0, DAG) && isI24(N1, DAG)) {
+ N0 = DAG.getSExtOrTrunc(N0, DL, MVT::i32);
+ N1 = DAG.getSExtOrTrunc(N1, DL, MVT::i32);
+ Mul = DAG.getNode(AMDGPUISD::MUL_I24, DL, MVT::i32, N0, N1);
+ } else {
+ break;
+ }
+
+ // We need to use sext even for MUL_U24, because MUL_U24 is used
+ // for signed multiply of 8 and 16-bit types.
+ SDValue Reg = DAG.getSExtOrTrunc(Mul, DL, VT);
+
+ return Reg;
+ }
+ case AMDGPUISD::MUL_I24:
+ case AMDGPUISD::MUL_U24: {
+ SDValue N0 = N->getOperand(0);
+ SDValue N1 = N->getOperand(1);
+ simplifyI24(N0, DCI);
+ simplifyI24(N1, DCI);
+ return SDValue();
+ }
+ case ISD::SELECT_CC: {
+ return CombineMinMax(N, DAG);
+ }
+ }
+ return SDValue();
}
//===----------------------------------------------------------------------===//
// Helper functions
//===----------------------------------------------------------------------===//
+void AMDGPUTargetLowering::getOriginalFunctionArgs(
+ SelectionDAG &DAG,
+ const Function *F,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ SmallVectorImpl<ISD::InputArg> &OrigIns) const {
+
+ for (unsigned i = 0, e = Ins.size(); i < e; ++i) {
+ if (Ins[i].ArgVT == Ins[i].VT) {
+ OrigIns.push_back(Ins[i]);
+ continue;
+ }
+
+ EVT VT;
+ if (Ins[i].ArgVT.isVector() && !Ins[i].VT.isVector()) {
+ // Vector has been split into scalars.
+ VT = Ins[i].ArgVT.getVectorElementType();
+ } else if (Ins[i].VT.isVector() && Ins[i].ArgVT.isVector() &&
+ Ins[i].ArgVT.getVectorElementType() !=
+ Ins[i].VT.getVectorElementType()) {
+ // Vector elements have been promoted
+ VT = Ins[i].ArgVT;
+ } else {
+ // Vector has been spilt into smaller vectors.
+ VT = Ins[i].VT;
+ }
+
+ ISD::InputArg Arg(Ins[i].Flags, VT, VT, Ins[i].Used,
+ Ins[i].OrigArgIndex, Ins[i].PartOffset);
+ OrigIns.push_back(Arg);
+ }
+}
+
bool AMDGPUTargetLowering::isHWTrueValue(SDValue Op) const {
if (ConstantFPSDNode * CFP = dyn_cast<ConstantFPSDNode>(Op)) {
return CFP->isExactlyValue(1.0);
const char* AMDGPUTargetLowering::getTargetNodeName(unsigned Opcode) const {
switch (Opcode) {
- default: return 0;
+ default: return nullptr;
// AMDIL DAG nodes
NODE_NAME_CASE(CALL);
NODE_NAME_CASE(UMUL);
NODE_NAME_CASE(FMIN)
NODE_NAME_CASE(SMIN)
NODE_NAME_CASE(UMIN)
+ NODE_NAME_CASE(BFE_U32)
+ NODE_NAME_CASE(BFE_I32)
+ NODE_NAME_CASE(BFI)
+ NODE_NAME_CASE(BFM)
+ NODE_NAME_CASE(MUL_U24)
+ NODE_NAME_CASE(MUL_I24)
NODE_NAME_CASE(URECIP)
+ NODE_NAME_CASE(DOT4)
NODE_NAME_CASE(EXPORT)
NODE_NAME_CASE(CONST_ADDRESS)
NODE_NAME_CASE(REGISTER_LOAD)
NODE_NAME_CASE(REGISTER_STORE)
+ NODE_NAME_CASE(LOAD_CONSTANT)
+ NODE_NAME_CASE(LOAD_INPUT)
+ NODE_NAME_CASE(SAMPLE)
+ NODE_NAME_CASE(SAMPLEB)
+ NODE_NAME_CASE(SAMPLED)
+ NODE_NAME_CASE(SAMPLEL)
+ NODE_NAME_CASE(STORE_MSKOR)
+ NODE_NAME_CASE(TBUFFER_STORE_FORMAT)
+ }
+}
+
+static void computeMaskedBitsForMinMax(const SDValue Op0,
+ const SDValue Op1,
+ APInt &KnownZero,
+ APInt &KnownOne,
+ const SelectionDAG &DAG,
+ unsigned Depth) {
+ APInt Op0Zero, Op0One;
+ APInt Op1Zero, Op1One;
+ DAG.ComputeMaskedBits(Op0, Op0Zero, Op0One, Depth);
+ DAG.ComputeMaskedBits(Op1, Op1Zero, Op1One, Depth);
+
+ KnownZero = Op0Zero & Op1Zero;
+ KnownOne = Op0One & Op1One;
+}
+
+void AMDGPUTargetLowering::computeMaskedBitsForTargetNode(
+ const SDValue Op,
+ APInt &KnownZero,
+ APInt &KnownOne,
+ const SelectionDAG &DAG,
+ unsigned Depth) const {
+
+ KnownZero = KnownOne = APInt(KnownOne.getBitWidth(), 0); // Don't know anything.
+ unsigned Opc = Op.getOpcode();
+ switch (Opc) {
+ case ISD::INTRINSIC_WO_CHAIN: {
+ // FIXME: The intrinsic should just use the node.
+ switch (cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue()) {
+ case AMDGPUIntrinsic::AMDGPU_imax:
+ case AMDGPUIntrinsic::AMDGPU_umax:
+ case AMDGPUIntrinsic::AMDGPU_imin:
+ case AMDGPUIntrinsic::AMDGPU_umin:
+ computeMaskedBitsForMinMax(Op.getOperand(1), Op.getOperand(2),
+ KnownZero, KnownOne, DAG, Depth);
+ break;
+ default:
+ break;
+ }
+
+ break;
+ }
+ case AMDGPUISD::SMAX:
+ case AMDGPUISD::UMAX:
+ case AMDGPUISD::SMIN:
+ case AMDGPUISD::UMIN:
+ computeMaskedBitsForMinMax(Op.getOperand(0), Op.getOperand(1),
+ KnownZero, KnownOne, DAG, Depth);
+ break;
+ default:
+ break;
}
}
projects / oota-llvm.git / blobdiff