#include "AMDGPUISelLowering.h"
#include "AMDGPU.h"
#include "AMDGPUFrameLowering.h"
+#include "AMDGPUIntrinsicInfo.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"
Subtarget = &TM.getSubtarget<AMDGPUSubtarget>();
- // Initialize target lowering borrowed from AMDIL
- InitAMDILLowering();
+ setOperationAction(ISD::Constant, MVT::i32, Legal);
+ setOperationAction(ISD::Constant, MVT::i64, Legal);
+ setOperationAction(ISD::ConstantFP, MVT::f32, Legal);
+ setOperationAction(ISD::ConstantFP, MVT::f64, Legal);
+
+ setOperationAction(ISD::BR_JT, MVT::Other, Expand);
+ setOperationAction(ISD::BRIND, MVT::Other, Expand);
// We need to custom lower some of the intrinsics
setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
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::FREM, MVT::f32, Custom);
+ setOperationAction(ISD::FREM, MVT::f64, Custom);
// Lower floating point store/load to integer store/load to reduce the number
// of patterns in tablegen.
setOperationAction(ISD::STORE, MVT::v2f32, Promote);
AddPromotedToType(ISD::STORE, MVT::v2f32, MVT::v2i32);
+ setOperationAction(ISD::STORE, MVT::i64, Promote);
+ AddPromotedToType(ISD::STORE, MVT::i64, MVT::v2i32);
+
setOperationAction(ISD::STORE, MVT::v4f32, Promote);
AddPromotedToType(ISD::STORE, MVT::v4f32, MVT::v4i32);
setOperationAction(ISD::LOAD, MVT::v2f32, Promote);
AddPromotedToType(ISD::LOAD, MVT::v2f32, MVT::v2i32);
+ setOperationAction(ISD::LOAD, MVT::i64, Promote);
+ AddPromotedToType(ISD::LOAD, MVT::i64, MVT::v2i32);
+
setOperationAction(ISD::LOAD, MVT::v4f32, Promote);
AddPromotedToType(ISD::LOAD, MVT::v4f32, MVT::v4i32);
setOperationAction(ISD::BR_CC, MVT::i1, Expand);
- setOperationAction(ISD::SELECT_CC, MVT::i64, 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);
+ if (Subtarget->getGeneration() < AMDGPUSubtarget::SEA_ISLANDS) {
+ setOperationAction(ISD::FCEIL, MVT::f64, Custom);
+ setOperationAction(ISD::FTRUNC, MVT::f64, Custom);
+ setOperationAction(ISD::FRINT, MVT::f64, Custom);
+ setOperationAction(ISD::FFLOOR, MVT::f64, Custom);
+ }
if (!Subtarget->hasBFI()) {
// fcopysign can be done in a single instruction with BFI.
setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
}
+ setOperationAction(ISD::FP16_TO_FP, MVT::f64, Expand);
+
+ setLoadExtAction(ISD::EXTLOAD, MVT::f16, Expand);
+ setTruncStoreAction(MVT::f32, MVT::f16, Expand);
+ setTruncStoreAction(MVT::f64, MVT::f16, Expand);
+
+ const MVT ScalarIntVTs[] = { MVT::i32, MVT::i64 };
+ for (MVT VT : ScalarIntVTs) {
+ setOperationAction(ISD::SREM, VT, Expand);
+ setOperationAction(ISD::SDIV, VT, Expand);
+
+ // GPU does not have divrem function for signed or unsigned.
+ setOperationAction(ISD::SDIVREM, VT, Custom);
+ setOperationAction(ISD::UDIVREM, VT, Custom);
+
+ // GPU does not have [S|U]MUL_LOHI functions as a single instruction.
+ setOperationAction(ISD::SMUL_LOHI, VT, Expand);
+ setOperationAction(ISD::UMUL_LOHI, VT, Expand);
+
+ setOperationAction(ISD::BSWAP, VT, Expand);
+ setOperationAction(ISD::CTTZ, VT, Expand);
+ setOperationAction(ISD::CTLZ, VT, Expand);
+ }
+
if (!Subtarget->hasBCNT(32))
setOperationAction(ISD::CTPOP, MVT::i32, Expand);
if (!Subtarget->hasBCNT(64))
setOperationAction(ISD::CTPOP, MVT::i64, Expand);
- MVT VTs[] = { MVT::i32, MVT::i64 };
- for (MVT VT : VTs) {
- setOperationAction(ISD::CTTZ, VT, Expand);
- setOperationAction(ISD::CTLZ, VT, Expand);
- }
+ // The hardware supports 32-bit ROTR, but not ROTL.
+ setOperationAction(ISD::ROTL, MVT::i32, Expand);
+ setOperationAction(ISD::ROTL, MVT::i64, Expand);
+ setOperationAction(ISD::ROTR, MVT::i64, Expand);
+
+ setOperationAction(ISD::MUL, MVT::i64, Expand);
+ setOperationAction(ISD::MULHU, MVT::i64, Expand);
+ setOperationAction(ISD::MULHS, MVT::i64, Expand);
+ setOperationAction(ISD::UDIV, MVT::i32, Expand);
+ setOperationAction(ISD::UREM, MVT::i32, Expand);
+ setOperationAction(ISD::UINT_TO_FP, MVT::i64, Custom);
+ setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
+ setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
+ setOperationAction(ISD::FP_TO_UINT, MVT::i64, Custom);
+ setOperationAction(ISD::SELECT_CC, MVT::i64, Expand);
- static const MVT::SimpleValueType IntTypes[] = {
+ if (!Subtarget->hasFFBH())
+ setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
+
+ if (!Subtarget->hasFFBL())
+ setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
+
+ static const MVT::SimpleValueType VectorIntTypes[] = {
MVT::v2i32, MVT::v4i32
};
- for (MVT VT : IntTypes) {
+ for (MVT VT : VectorIntTypes) {
// Expand the following operations for the current type by default.
setOperationAction(ISD::ADD, VT, Expand);
setOperationAction(ISD::AND, 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::SRL, VT, Expand);
+ setOperationAction(ISD::ROTL, VT, Expand);
+ setOperationAction(ISD::ROTR, VT, Expand);
setOperationAction(ISD::SUB, VT, Expand);
- setOperationAction(ISD::UDIV, VT, Expand);
+ setOperationAction(ISD::SINT_TO_FP, VT, Expand);
setOperationAction(ISD::UINT_TO_FP, VT, Expand);
+ setOperationAction(ISD::SDIV, VT, Expand);
+ setOperationAction(ISD::UDIV, VT, Expand);
+ setOperationAction(ISD::SREM, VT, Expand);
setOperationAction(ISD::UREM, VT, Expand);
+ setOperationAction(ISD::SMUL_LOHI, VT, Expand);
+ setOperationAction(ISD::UMUL_LOHI, VT, Expand);
+ setOperationAction(ISD::SDIVREM, VT, Custom);
+ setOperationAction(ISD::UDIVREM, VT, Custom);
+ setOperationAction(ISD::ADDC, VT, Expand);
+ setOperationAction(ISD::SUBC, VT, Expand);
+ setOperationAction(ISD::ADDE, VT, Expand);
+ setOperationAction(ISD::SUBE, VT, Expand);
setOperationAction(ISD::SELECT, VT, Expand);
setOperationAction(ISD::VSELECT, VT, Expand);
+ setOperationAction(ISD::SELECT_CC, VT, Expand);
setOperationAction(ISD::XOR, VT, Expand);
setOperationAction(ISD::BSWAP, VT, Expand);
setOperationAction(ISD::CTPOP, VT, Expand);
setOperationAction(ISD::CTTZ, VT, Expand);
+ setOperationAction(ISD::CTTZ_ZERO_UNDEF, VT, Expand);
setOperationAction(ISD::CTLZ, VT, Expand);
+ setOperationAction(ISD::CTLZ_ZERO_UNDEF, VT, Expand);
+ setOperationAction(ISD::VECTOR_SHUFFLE, VT, Expand);
}
- static const MVT::SimpleValueType FloatTypes[] = {
+ static const MVT::SimpleValueType FloatVectorTypes[] = {
MVT::v2f32, MVT::v4f32
};
- for (MVT VT : FloatTypes) {
+ for (MVT VT : FloatVectorTypes) {
setOperationAction(ISD::FABS, VT, Expand);
+ setOperationAction(ISD::FMINNUM, VT, Expand);
+ setOperationAction(ISD::FMAXNUM, VT, Expand);
setOperationAction(ISD::FADD, VT, Expand);
+ setOperationAction(ISD::FCEIL, VT, Expand);
setOperationAction(ISD::FCOS, VT, Expand);
setOperationAction(ISD::FDIV, VT, Expand);
+ setOperationAction(ISD::FEXP2, VT, Expand);
+ setOperationAction(ISD::FLOG2, VT, Expand);
+ setOperationAction(ISD::FREM, VT, Expand);
setOperationAction(ISD::FPOW, VT, Expand);
setOperationAction(ISD::FFLOOR, VT, Expand);
setOperationAction(ISD::FTRUNC, VT, Expand);
setOperationAction(ISD::FMUL, VT, Expand);
+ setOperationAction(ISD::FMA, VT, Expand);
setOperationAction(ISD::FRINT, VT, Expand);
+ setOperationAction(ISD::FNEARBYINT, VT, Expand);
setOperationAction(ISD::FSQRT, VT, Expand);
setOperationAction(ISD::FSIN, VT, Expand);
setOperationAction(ISD::FSUB, VT, Expand);
setOperationAction(ISD::FNEG, VT, Expand);
setOperationAction(ISD::SELECT, VT, Expand);
setOperationAction(ISD::VSELECT, VT, Expand);
+ setOperationAction(ISD::SELECT_CC, VT, Expand);
setOperationAction(ISD::FCOPYSIGN, VT, Expand);
+ setOperationAction(ISD::VECTOR_SHUFFLE, VT, Expand);
}
+ setOperationAction(ISD::FNEARBYINT, MVT::f32, Custom);
+ setOperationAction(ISD::FNEARBYINT, MVT::f64, Custom);
+
setTargetDAGCombine(ISD::MUL);
setTargetDAGCombine(ISD::SELECT_CC);
+ setTargetDAGCombine(ISD::STORE);
+
+ setSchedulingPreference(Sched::RegPressure);
+ setJumpIsExpensive(true);
+
+ // SI at least has hardware support for floating point exceptions, but no way
+ // of using or handling them is implemented. They are also optional in OpenCL
+ // (Section 7.3)
+ setHasFloatingPointExceptions(false);
+
+ setSelectIsExpensive(false);
+ PredictableSelectIsExpensive = false;
+
+ // There are no integer divide instructions, and these expand to a pretty
+ // large sequence of instructions.
+ setIntDivIsCheap(false);
+ setPow2SDivIsCheap(false);
+
+ // FIXME: Need to really handle these.
+ MaxStoresPerMemcpy = 4096;
+ MaxStoresPerMemmove = 4096;
+ MaxStoresPerMemset = 4096;
}
//===----------------------------------------------------------------------===//
return MVT::i32;
}
+bool AMDGPUTargetLowering::isSelectSupported(SelectSupportKind SelType) const {
+ return true;
+}
+
+// The backend supports 32 and 64 bit floating point immediates.
+// FIXME: Why are we reporting vectors of FP immediates as legal?
+bool AMDGPUTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const {
+ EVT ScalarVT = VT.getScalarType();
+ return (ScalarVT == MVT::f32 || ScalarVT == MVT::f64);
+}
+
+// We don't want to shrink f64 / f32 constants.
+bool AMDGPUTargetLowering::ShouldShrinkFPConstant(EVT VT) const {
+ EVT ScalarVT = VT.getScalarType();
+ return (ScalarVT != MVT::f32 && ScalarVT != MVT::f64);
+}
+
bool AMDGPUTargetLowering::isLoadBitCastBeneficial(EVT LoadTy,
EVT CastTy) const {
if (LoadTy.getSizeInBits() != CastTy.getSizeInBits())
bool AMDGPUTargetLowering::isFAbsFree(EVT VT) const {
assert(VT.isFloatingPoint());
- return VT == MVT::f32;
+ return VT == MVT::f32 || VT == MVT::f64;
}
bool AMDGPUTargetLowering::isFNegFree(EVT VT) const {
assert(VT.isFloatingPoint());
- return VT == MVT::f32;
+ return VT == MVT::f32 || VT == MVT::f64;
}
bool AMDGPUTargetLowering::isTruncateFree(EVT Source, EVT Dest) const {
return Src == MVT::i32 && Dest == MVT::i64;
}
+bool AMDGPUTargetLowering::isZExtFree(SDValue Val, EVT VT2) const {
+ return isZExtFree(Val.getValueType(), VT2);
+}
+
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
return SDValue();
}
-SDValue AMDGPUTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG)
- const {
+SDValue AMDGPUTargetLowering::LowerOperation(SDValue Op,
+ SelectionDAG &DAG) const {
switch (Op.getOpcode()) {
default:
Op.getNode()->dump();
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::SREM: return LowerSREM(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::SDIVREM: return LowerSDIVREM(Op, DAG);
+ case ISD::FREM: return LowerFREM(Op, DAG);
+ case ISD::FCEIL: return LowerFCEIL(Op, DAG);
+ case ISD::FTRUNC: return LowerFTRUNC(Op, DAG);
+ case ISD::FRINT: return LowerFRINT(Op, DAG);
+ case ISD::FNEARBYINT: return LowerFNEARBYINT(Op, DAG);
+ case ISD::FFLOOR: return LowerFFLOOR(Op, DAG);
+ case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG);
case ISD::UINT_TO_FP: return LowerUINT_TO_FP(Op, DAG);
+ case ISD::FP_TO_SINT: return LowerFP_TO_SINT(Op, DAG);
+ case ISD::FP_TO_UINT: return LowerFP_TO_UINT(Op, DAG);
}
return Op;
}
// 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);
- }
+ case ISD::LOAD: {
+ SDNode *Node = LowerLOAD(SDValue(N, 0), DAG).getNode();
+ if (!Node)
+ return;
- 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;
+ Results.push_back(SDValue(Node, 0));
+ Results.push_back(SDValue(Node, 1));
+ // XXX: LLVM seems not to replace Chain Value inside CustomWidenLowerNode
+ // function
+ DAG.ReplaceAllUsesOfValueWith(SDValue(N,1), SDValue(Node, 1));
+ return;
+ }
+ case ISD::STORE: {
+ SDValue Lowered = LowerSTORE(SDValue(N, 0), DAG);
+ if (Lowered.getNode())
+ Results.push_back(Lowered);
+ return;
}
default:
return;
const SDValue &InitPtr,
SDValue Chain,
SelectionDAG &DAG) const {
- const DataLayout *TD = getTargetMachine().getDataLayout();
+ const DataLayout *TD = getTargetMachine().getSubtargetImpl()->getDataLayout();
SDLoc DL(InitPtr);
+ Type *InitTy = Init->getType();
+
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()));
+ EVT VT = EVT::getEVT(InitTy);
+ PointerType *PtrTy = PointerType::get(InitTy, AMDGPUAS::PRIVATE_ADDRESS);
+ return DAG.getStore(Chain, DL, DAG.getConstant(*CI, VT), InitPtr,
+ MachinePointerInfo(UndefValue::get(PtrTy)), false, false,
+ TD->getPrefTypeAlignment(InitTy));
}
if (const ConstantFP *CFP = dyn_cast<ConstantFP>(Init)) {
TD->getPrefTypeAlignment(CFP->getType()));
}
- Type *InitTy = Init->getType();
if (StructType *ST = dyn_cast<StructType>(InitTy)) {
const StructLayout *SL = TD->getStructLayout(ST);
return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Chains);
}
+ if (isa<UndefValue>(Init)) {
+ EVT VT = EVT::getEVT(InitTy);
+ PointerType *PtrTy = PointerType::get(InitTy, AMDGPUAS::PRIVATE_ADDRESS);
+ return DAG.getStore(Chain, DL, DAG.getUNDEF(VT), InitPtr,
+ MachinePointerInfo(UndefValue::get(PtrTy)), false, false,
+ TD->getPrefTypeAlignment(InitTy));
+ }
+
Init->dump();
llvm_unreachable("Unhandled constant initializer");
}
SDValue Op,
SelectionDAG &DAG) const {
- const DataLayout *TD = getTargetMachine().getDataLayout();
+ const DataLayout *TD = getTargetMachine().getSubtargetImpl()->getDataLayout();
GlobalAddressSDNode *G = cast<GlobalAddressSDNode>(Op);
const GlobalValue *GV = G->getGlobal();
Offset = MFI->LocalMemoryObjects[GV];
}
- return DAG.getConstant(Offset, getPointerTy(G->getAddressSpace()));
+ return DAG.getConstant(Offset, getPointerTy(AMDGPUAS::LOCAL_ADDRESS));
}
case AMDGPUAS::CONSTANT_ADDRESS: {
MachineFrameInfo *FrameInfo = DAG.getMachineFunction().getFrameInfo();
unsigned Size = TD->getTypeAllocSize(EltType);
unsigned Alignment = TD->getPrefTypeAlignment(EltType);
+ MVT PrivPtrVT = getPointerTy(AMDGPUAS::PRIVATE_ADDRESS);
+ MVT ConstPtrVT = getPointerTy(AMDGPUAS::CONSTANT_ADDRESS);
+
+ int FI = FrameInfo->CreateStackObject(Size, Alignment, false);
+ SDValue InitPtr = DAG.getFrameIndex(FI, PrivPtrVT);
+
const GlobalVariable *Var = cast<GlobalVariable>(GV);
+ if (!Var->hasInitializer()) {
+ // This has no use, but bugpoint will hit it.
+ return DAG.getZExtOrTrunc(InitPtr, SDLoc(Op), ConstPtrVT);
+ }
+
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(),
}
DAG.UpdateNodeOperands(*I, Ops);
}
- return DAG.getZExtOrTrunc(InitPtr, SDLoc(Op),
- getPointerTy(AMDGPUAS::CONSTANT_ADDRESS));
+ return DAG.getZExtOrTrunc(InitPtr, SDLoc(Op), ConstPtrVT);
}
}
}
SelectionDAG &DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
- const AMDGPUFrameLowering *TFL =
- static_cast<const AMDGPUFrameLowering*>(getTargetMachine().getFrameLowering());
+ const AMDGPUFrameLowering *TFL = static_cast<const AMDGPUFrameLowering *>(
+ getTargetMachine().getSubtargetImpl()->getFrameLowering());
FrameIndexSDNode *FIN = cast<FrameIndexSDNode>(Op);
return DAG.getNode(AMDGPUISD::CLAMP, DL, VT,
Op.getOperand(1), Op.getOperand(2), Op.getOperand(3));
+ case Intrinsic::AMDGPU_div_scale: {
+ // 3rd parameter required to be a constant.
+ const ConstantSDNode *Param = dyn_cast<ConstantSDNode>(Op.getOperand(3));
+ if (!Param)
+ return DAG.getUNDEF(VT);
+
+ // Translate to the operands expected by the machine instruction. The
+ // first parameter must be the same as the first instruction.
+ SDValue Numerator = Op.getOperand(1);
+ SDValue Denominator = Op.getOperand(2);
+
+ // Note this order is opposite of the machine instruction's operations,
+ // which is s0.f = Quotient, s1.f = Denominator, s2.f = Numerator. The
+ // intrinsic has the numerator as the first operand to match a normal
+ // division operation.
+
+ SDValue Src0 = Param->isAllOnesValue() ? Numerator : Denominator;
+
+ return DAG.getNode(AMDGPUISD::DIV_SCALE, DL, Op->getVTList(), Src0,
+ Denominator, Numerator);
+ }
+
+ case Intrinsic::AMDGPU_div_fmas:
+ // FIXME: Dropping bool parameter. Work is needed to support the implicit
+ // read from VCC.
+ return DAG.getNode(AMDGPUISD::DIV_FMAS, DL, VT,
+ Op.getOperand(1), Op.getOperand(2), Op.getOperand(3));
+
+ case Intrinsic::AMDGPU_div_fixup:
+ return DAG.getNode(AMDGPUISD::DIV_FIXUP, DL, VT,
+ Op.getOperand(1), Op.getOperand(2), Op.getOperand(3));
+
+ case Intrinsic::AMDGPU_trig_preop:
+ return DAG.getNode(AMDGPUISD::TRIG_PREOP, DL, VT,
+ Op.getOperand(1), Op.getOperand(2));
+
+ case Intrinsic::AMDGPU_rcp:
+ return DAG.getNode(AMDGPUISD::RCP, DL, VT, Op.getOperand(1));
+
+ case Intrinsic::AMDGPU_rsq:
+ return DAG.getNode(AMDGPUISD::RSQ, DL, VT, Op.getOperand(1));
+
+ case AMDGPUIntrinsic::AMDGPU_legacy_rsq:
+ return DAG.getNode(AMDGPUISD::RSQ_LEGACY, DL, VT, Op.getOperand(1));
+
+ case Intrinsic::AMDGPU_rsq_clamped:
+ return DAG.getNode(AMDGPUISD::RSQ_CLAMPED, DL, VT, Op.getOperand(1));
+
+ case Intrinsic::AMDGPU_ldexp:
+ return DAG.getNode(AMDGPUISD::LDEXP, DL, VT, Op.getOperand(1),
+ Op.getOperand(2));
+
case AMDGPUIntrinsic::AMDGPU_imax:
return DAG.getNode(AMDGPUISD::SMAX, DL, VT, Op.getOperand(1),
Op.getOperand(2));
Op.getOperand(1),
Op.getOperand(2));
+ case AMDGPUIntrinsic::AMDGPU_brev:
+ return DAG.getNode(AMDGPUISD::BREV, DL, VT, Op.getOperand(1));
+
case AMDGPUIntrinsic::AMDIL_exp: // Legacy name.
return DAG.getNode(ISD::FEXP2, DL, VT, Op.getOperand(1));
case AMDGPUIntrinsic::AMDIL_round_nearest: // Legacy name.
return DAG.getNode(ISD::FRINT, DL, VT, Op.getOperand(1));
+ case AMDGPUIntrinsic::AMDGPU_trunc: // Legacy name.
+ return DAG.getNode(ISD::FTRUNC, DL, VT, Op.getOperand(1));
}
}
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();
+SDValue AMDGPUTargetLowering::ScalarizeVectorLoad(const SDValue Op,
+ SelectionDAG &DAG) const {
+ LoadSDNode *Load = cast<LoadSDNode>(Op);
+ EVT MemVT = Load->getMemoryVT();
+ EVT MemEltVT = MemVT.getVectorElementType();
+
+ EVT LoadVT = Op.getValueType();
+ EVT EltVT = LoadVT.getVectorElementType();
EVT PtrVT = Load->getBasePtr().getValueType();
+
unsigned NumElts = Load->getMemoryVT().getVectorNumElements();
SmallVector<SDValue, 8> Loads;
+ SmallVector<SDValue, 8> Chains;
+
SDLoc SL(Op);
+ unsigned MemEltSize = MemEltVT.getStoreSize();
+ MachinePointerInfo SrcValue(Load->getMemOperand()->getValue());
- for (unsigned i = 0, e = NumElts; i != e; ++i) {
+ for (unsigned i = 0; i < NumElts; ++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()));
+ DAG.getConstant(i * MemEltSize, PtrVT));
+
+ SDValue NewLoad
+ = DAG.getExtLoad(Load->getExtensionType(), SL, EltVT,
+ Load->getChain(), Ptr,
+ SrcValue.getWithOffset(i * MemEltSize),
+ MemEltVT, Load->isVolatile(), Load->isNonTemporal(),
+ Load->isInvariant(), Load->getAlignment());
+ Loads.push_back(NewLoad.getValue(0));
+ Chains.push_back(NewLoad.getValue(1));
}
- return DAG.getNode(ISD::BUILD_VECTOR, SL, Op.getValueType(), Loads);
+
+ SDValue Ops[] = {
+ DAG.getNode(ISD::BUILD_VECTOR, SL, LoadVT, Loads),
+ DAG.getNode(ISD::TokenFactor, SL, MVT::Other, Chains)
+ };
+
+ return DAG.getMergeValues(Ops, SL);
+}
+
+SDValue AMDGPUTargetLowering::SplitVectorLoad(const SDValue Op,
+ SelectionDAG &DAG) const {
+ EVT VT = Op.getValueType();
+
+ // If this is a 2 element vector, we really want to scalarize and not create
+ // weird 1 element vectors.
+ if (VT.getVectorNumElements() == 2)
+ return ScalarizeVectorLoad(Op, DAG);
+
+ LoadSDNode *Load = cast<LoadSDNode>(Op);
+ SDValue BasePtr = Load->getBasePtr();
+ EVT PtrVT = BasePtr.getValueType();
+ EVT MemVT = Load->getMemoryVT();
+ SDLoc SL(Op);
+ MachinePointerInfo SrcValue(Load->getMemOperand()->getValue());
+
+ EVT LoVT, HiVT;
+ EVT LoMemVT, HiMemVT;
+ SDValue Lo, Hi;
+
+ std::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(VT);
+ std::tie(LoMemVT, HiMemVT) = DAG.GetSplitDestVTs(MemVT);
+ std::tie(Lo, Hi) = DAG.SplitVector(Op, SL, LoVT, HiVT);
+ SDValue LoLoad
+ = DAG.getExtLoad(Load->getExtensionType(), SL, LoVT,
+ Load->getChain(), BasePtr,
+ SrcValue,
+ LoMemVT, Load->isVolatile(), Load->isNonTemporal(),
+ Load->isInvariant(), Load->getAlignment());
+
+ SDValue HiPtr = DAG.getNode(ISD::ADD, SL, PtrVT, BasePtr,
+ DAG.getConstant(LoMemVT.getStoreSize(), PtrVT));
+
+ SDValue HiLoad
+ = DAG.getExtLoad(Load->getExtensionType(), SL, HiVT,
+ Load->getChain(), HiPtr,
+ SrcValue.getWithOffset(LoMemVT.getStoreSize()),
+ HiMemVT, Load->isVolatile(), Load->isNonTemporal(),
+ Load->isInvariant(), Load->getAlignment());
+
+ SDValue Ops[] = {
+ DAG.getNode(ISD::CONCAT_VECTORS, SL, VT, LoLoad, HiLoad),
+ DAG.getNode(ISD::TokenFactor, SL, MVT::Other,
+ LoLoad.getValue(1), HiLoad.getValue(1))
+ };
+
+ return DAG.getMergeValues(Ops, SL);
}
SDValue AMDGPUTargetLowering::MergeVectorStore(const SDValue &Op,
Store->getAlignment());
}
-SDValue AMDGPUTargetLowering::SplitVectorStore(SDValue Op,
- SelectionDAG &DAG) const {
+SDValue AMDGPUTargetLowering::ScalarizeVectorStore(SDValue Op,
+ SelectionDAG &DAG) const {
StoreSDNode *Store = cast<StoreSDNode>(Op);
EVT MemEltVT = Store->getMemoryVT().getVectorElementType();
EVT EltVT = Store->getValue().getValueType().getVectorElementType();
SmallVector<SDValue, 8> Chains;
+ unsigned EltSize = MemEltVT.getStoreSize();
+ MachinePointerInfo SrcValue(Store->getMemOperand()->getValue());
+
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()));
+ Store->getValue(),
+ DAG.getConstant(i, MVT::i32));
+
+ SDValue Offset = DAG.getConstant(i * MemEltVT.getStoreSize(), PtrVT);
+ SDValue Ptr = DAG.getNode(ISD::ADD, SL, PtrVT, Store->getBasePtr(), Offset);
+ SDValue NewStore =
+ DAG.getTruncStore(Store->getChain(), SL, Val, Ptr,
+ SrcValue.getWithOffset(i * EltSize),
+ MemEltVT, Store->isNonTemporal(), Store->isVolatile(),
+ Store->getAlignment());
+ Chains.push_back(NewStore);
}
+
return DAG.getNode(ISD::TokenFactor, SL, MVT::Other, Chains);
}
+SDValue AMDGPUTargetLowering::SplitVectorStore(SDValue Op,
+ SelectionDAG &DAG) const {
+ StoreSDNode *Store = cast<StoreSDNode>(Op);
+ SDValue Val = Store->getValue();
+ EVT VT = Val.getValueType();
+
+ // If this is a 2 element vector, we really want to scalarize and not create
+ // weird 1 element vectors.
+ if (VT.getVectorNumElements() == 2)
+ return ScalarizeVectorStore(Op, DAG);
+
+ EVT MemVT = Store->getMemoryVT();
+ SDValue Chain = Store->getChain();
+ SDValue BasePtr = Store->getBasePtr();
+ SDLoc SL(Op);
+
+ EVT LoVT, HiVT;
+ EVT LoMemVT, HiMemVT;
+ SDValue Lo, Hi;
+
+ std::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(VT);
+ std::tie(LoMemVT, HiMemVT) = DAG.GetSplitDestVTs(MemVT);
+ std::tie(Lo, Hi) = DAG.SplitVector(Val, SL, LoVT, HiVT);
+
+ EVT PtrVT = BasePtr.getValueType();
+ SDValue HiPtr = DAG.getNode(ISD::ADD, SL, PtrVT, BasePtr,
+ DAG.getConstant(LoMemVT.getStoreSize(), PtrVT));
+
+ MachinePointerInfo SrcValue(Store->getMemOperand()->getValue());
+ SDValue LoStore
+ = DAG.getTruncStore(Chain, SL, Lo,
+ BasePtr,
+ SrcValue,
+ LoMemVT,
+ Store->isNonTemporal(),
+ Store->isVolatile(),
+ Store->getAlignment());
+ SDValue HiStore
+ = DAG.getTruncStore(Chain, SL, Hi,
+ HiPtr,
+ SrcValue.getWithOffset(LoMemVT.getStoreSize()),
+ HiMemVT,
+ Store->isNonTemporal(),
+ Store->isVolatile(),
+ Store->getAlignment());
+
+ return DAG.getNode(ISD::TokenFactor, SL, MVT::Other, LoStore, HiStore);
+}
+
+
SDValue AMDGPUTargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
SDLoc DL(Op);
LoadSDNode *Load = cast<LoadSDNode>(Op);
Load->getBasePtr(),
MemVT,
Load->getMemOperand());
- return DAG.getNode(ISD::getExtForLoadExtType(ExtType), DL, VT, ExtLoad32);
+
+ SDValue Ops[] = {
+ DAG.getNode(ISD::getExtForLoadExtType(ExtType), DL, VT, ExtLoad32),
+ ExtLoad32.getValue(1)
+ };
+
+ return DAG.getMergeValues(Ops, DL);
}
if (ExtType == ISD::NON_EXTLOAD && VT.getSizeInBits() < 32) {
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 Ops[] = {
+ DAG.getNode(ISD::TRUNCATE, DL, VT, NewLD),
+ NewLD.getValue(1)
+ };
- 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));
+ return DAG.getMergeValues(Ops, DL);
}
- if (Load->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS ||
+ if (Subtarget->getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS ||
+ Load->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS ||
ExtType == ISD::NON_EXTLOAD || Load->getMemoryVT().bitsGE(MVT::i32))
return SDValue();
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);
+
+ SDValue Ops[] = {
+ DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, MVT::i32, Ret, MemEltVTNode),
+ Load->getChain()
+ };
+
+ return DAG.getMergeValues(Ops, DL);
}
- return DAG.getZeroExtendInReg(Ret, DL, MemEltVT);
+ SDValue Ops[] = {
+ DAG.getZeroExtendInReg(Ret, DL, MemEltVT),
+ Load->getChain()
+ };
+
+ return DAG.getMergeValues(Ops, DL);
}
SDValue AMDGPUTargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {
if ((Store->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS ||
Store->getAddressSpace() == AMDGPUAS::PRIVATE_ADDRESS) &&
Store->getValue().getValueType().isVector()) {
- return SplitVectorStore(Op, DAG);
+ return ScalarizeVectorStore(Op, DAG);
}
EVT MemVT = Store->getMemoryVT();
return SDValue();
}
+// This is a shortcut for integer division because we have fast i32<->f32
+// conversions, and fast f32 reciprocal instructions. The fractional part of a
+// float is enough to accurately represent up to a 24-bit integer.
+SDValue AMDGPUTargetLowering::LowerDIVREM24(SDValue Op, SelectionDAG &DAG, bool sign) const {
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+ SDValue LHS = Op.getOperand(0);
+ SDValue RHS = Op.getOperand(1);
+ MVT IntVT = MVT::i32;
+ MVT FltVT = MVT::f32;
+
+ ISD::NodeType ToFp = sign ? ISD::SINT_TO_FP : ISD::UINT_TO_FP;
+ ISD::NodeType ToInt = sign ? ISD::FP_TO_SINT : ISD::FP_TO_UINT;
+
+ if (VT.isVector()) {
+ unsigned NElts = VT.getVectorNumElements();
+ IntVT = MVT::getVectorVT(MVT::i32, NElts);
+ FltVT = MVT::getVectorVT(MVT::f32, NElts);
+ }
+
+ unsigned BitSize = VT.getScalarType().getSizeInBits();
+
+ SDValue jq = DAG.getConstant(1, IntVT);
+
+ if (sign) {
+ // char|short jq = ia ^ ib;
+ jq = DAG.getNode(ISD::XOR, DL, VT, LHS, RHS);
+
+ // jq = jq >> (bitsize - 2)
+ jq = DAG.getNode(ISD::SRA, DL, VT, jq, DAG.getConstant(BitSize - 2, VT));
+
+ // jq = jq | 0x1
+ jq = DAG.getNode(ISD::OR, DL, VT, jq, DAG.getConstant(1, VT));
+
+ // jq = (int)jq
+ jq = DAG.getSExtOrTrunc(jq, DL, IntVT);
+ }
+
+ // int ia = (int)LHS;
+ SDValue ia = sign ?
+ DAG.getSExtOrTrunc(LHS, DL, IntVT) : DAG.getZExtOrTrunc(LHS, DL, IntVT);
+
+ // int ib, (int)RHS;
+ SDValue ib = sign ?
+ DAG.getSExtOrTrunc(RHS, DL, IntVT) : DAG.getZExtOrTrunc(RHS, DL, IntVT);
+
+ // float fa = (float)ia;
+ SDValue fa = DAG.getNode(ToFp, DL, FltVT, ia);
+
+ // float fb = (float)ib;
+ SDValue fb = DAG.getNode(ToFp, DL, FltVT, ib);
+
+ // float fq = native_divide(fa, fb);
+ SDValue fq = DAG.getNode(ISD::FMUL, DL, FltVT,
+ fa, DAG.getNode(AMDGPUISD::RCP, DL, FltVT, fb));
+
+ // fq = trunc(fq);
+ fq = DAG.getNode(ISD::FTRUNC, DL, FltVT, fq);
+
+ // float fqneg = -fq;
+ SDValue fqneg = DAG.getNode(ISD::FNEG, DL, FltVT, fq);
+
+ // float fr = mad(fqneg, fb, fa);
+ SDValue fr = DAG.getNode(ISD::FADD, DL, FltVT,
+ DAG.getNode(ISD::FMUL, DL, FltVT, fqneg, fb), fa);
+
+ // int iq = (int)fq;
+ SDValue iq = DAG.getNode(ToInt, DL, IntVT, fq);
+
+ // fr = fabs(fr);
+ fr = DAG.getNode(ISD::FABS, DL, FltVT, fr);
+
+ // fb = fabs(fb);
+ fb = DAG.getNode(ISD::FABS, DL, FltVT, fb);
+
+ EVT SetCCVT = getSetCCResultType(*DAG.getContext(), VT);
+
+ // int cv = fr >= fb;
+ SDValue cv = DAG.getSetCC(DL, SetCCVT, fr, fb, ISD::SETOGE);
+
+ // jq = (cv ? jq : 0);
+ jq = DAG.getNode(ISD::SELECT, DL, VT, cv, jq, DAG.getConstant(0, VT));
+
+ // dst = trunc/extend to legal type
+ iq = sign ? DAG.getSExtOrTrunc(iq, DL, VT) : DAG.getZExtOrTrunc(iq, DL, VT);
+
+ // dst = iq + jq;
+ SDValue Div = DAG.getNode(ISD::ADD, DL, VT, iq, jq);
+
+ // Rem needs compensation, it's easier to recompute it
+ SDValue Rem = DAG.getNode(ISD::MUL, DL, VT, Div, RHS);
+ Rem = DAG.getNode(ISD::SUB, DL, VT, LHS, Rem);
+
+ SDValue Res[2] = {
+ Div,
+ Rem
+ };
+ return DAG.getMergeValues(Res, DL);
+}
+
SDValue AMDGPUTargetLowering::LowerUDIVREM(SDValue Op,
SelectionDAG &DAG) const {
SDLoc DL(Op);
SDValue Num = Op.getOperand(0);
SDValue Den = Op.getOperand(1);
+ if (VT == MVT::i32) {
+ if (DAG.MaskedValueIsZero(Op.getOperand(0), APInt(32, 0xff << 24)) &&
+ DAG.MaskedValueIsZero(Op.getOperand(1), APInt(32, 0xff << 24))) {
+ // TODO: We technically could do this for i64, but shouldn't that just be
+ // handled by something generally reducing 64-bit division on 32-bit
+ // values to 32-bit?
+ return LowerDIVREM24(Op, DAG, false);
+ }
+ }
+
// RCP = URECIP(Den) = 2^32 / Den + e
// e is rounding error.
SDValue RCP = DAG.getNode(AMDGPUISD::URECIP, DL, VT, Den);
- // RCP_LO = umulo(RCP, Den) */
- SDValue RCP_LO = DAG.getNode(ISD::UMULO, DL, VT, RCP, Den);
+ // RCP_LO = mul(RCP, Den) */
+ SDValue RCP_LO = DAG.getNode(ISD::MUL, DL, VT, RCP, Den);
// RCP_HI = mulhu (RCP, Den) */
SDValue RCP_HI = DAG.getNode(ISD::MULHU, DL, VT, RCP, Den);
SDValue Quotient = DAG.getNode(ISD::MULHU, DL, VT, Tmp0, Num);
// Num_S_Remainder = Quotient * Den
- SDValue Num_S_Remainder = DAG.getNode(ISD::UMULO, DL, VT, Quotient, Den);
+ SDValue Num_S_Remainder = DAG.getNode(ISD::MUL, DL, VT, Quotient, Den);
// Remainder = Num - Num_S_Remainder
SDValue Remainder = DAG.getNode(ISD::SUB, DL, VT, Num, Num_S_Remainder);
return DAG.getMergeValues(Ops, DL);
}
+SDValue AMDGPUTargetLowering::LowerSDIVREM(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+
+ SDValue LHS = Op.getOperand(0);
+ SDValue RHS = Op.getOperand(1);
+
+ if (VT == MVT::i32) {
+ if (DAG.ComputeNumSignBits(Op.getOperand(0)) > 8 &&
+ DAG.ComputeNumSignBits(Op.getOperand(1)) > 8) {
+ // TODO: We technically could do this for i64, but shouldn't that just be
+ // handled by something generally reducing 64-bit division on 32-bit
+ // values to 32-bit?
+ return LowerDIVREM24(Op, DAG, true);
+ }
+ }
+
+ SDValue Zero = DAG.getConstant(0, VT);
+ SDValue NegOne = DAG.getConstant(-1, VT);
+
+ SDValue LHSign = DAG.getSelectCC(DL, LHS, Zero, NegOne, Zero, ISD::SETLT);
+ SDValue RHSign = DAG.getSelectCC(DL, RHS, Zero, NegOne, Zero, ISD::SETLT);
+ SDValue DSign = DAG.getNode(ISD::XOR, DL, VT, LHSign, RHSign);
+ SDValue RSign = LHSign; // Remainder sign is the same as LHS
+
+ LHS = DAG.getNode(ISD::ADD, DL, VT, LHS, LHSign);
+ RHS = DAG.getNode(ISD::ADD, DL, VT, RHS, RHSign);
+
+ LHS = DAG.getNode(ISD::XOR, DL, VT, LHS, LHSign);
+ RHS = DAG.getNode(ISD::XOR, DL, VT, RHS, RHSign);
+
+ SDValue Div = DAG.getNode(ISD::UDIVREM, DL, DAG.getVTList(VT, VT), LHS, RHS);
+ SDValue Rem = Div.getValue(1);
+
+ Div = DAG.getNode(ISD::XOR, DL, VT, Div, DSign);
+ Rem = DAG.getNode(ISD::XOR, DL, VT, Rem, RSign);
+
+ Div = DAG.getNode(ISD::SUB, DL, VT, Div, DSign);
+ Rem = DAG.getNode(ISD::SUB, DL, VT, Rem, RSign);
+
+ SDValue Res[2] = {
+ Div,
+ Rem
+ };
+ return DAG.getMergeValues(Res, DL);
+}
+
+// (frem x, y) -> (fsub x, (fmul (ftrunc (fdiv x, y)), y))
+SDValue AMDGPUTargetLowering::LowerFREM(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc SL(Op);
+ EVT VT = Op.getValueType();
+ SDValue X = Op.getOperand(0);
+ SDValue Y = Op.getOperand(1);
+
+ SDValue Div = DAG.getNode(ISD::FDIV, SL, VT, X, Y);
+ SDValue Floor = DAG.getNode(ISD::FTRUNC, SL, VT, Div);
+ SDValue Mul = DAG.getNode(ISD::FMUL, SL, VT, Floor, Y);
+
+ return DAG.getNode(ISD::FSUB, SL, VT, X, Mul);
+}
+
+SDValue AMDGPUTargetLowering::LowerFCEIL(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc SL(Op);
+ SDValue Src = Op.getOperand(0);
+
+ // result = trunc(src)
+ // if (src > 0.0 && src != result)
+ // result += 1.0
+
+ SDValue Trunc = DAG.getNode(ISD::FTRUNC, SL, MVT::f64, Src);
+
+ const SDValue Zero = DAG.getConstantFP(0.0, MVT::f64);
+ const SDValue One = DAG.getConstantFP(1.0, MVT::f64);
+
+ EVT SetCCVT = getSetCCResultType(*DAG.getContext(), MVT::f64);
+
+ SDValue Lt0 = DAG.getSetCC(SL, SetCCVT, Src, Zero, ISD::SETOGT);
+ SDValue NeTrunc = DAG.getSetCC(SL, SetCCVT, Src, Trunc, ISD::SETONE);
+ SDValue And = DAG.getNode(ISD::AND, SL, SetCCVT, Lt0, NeTrunc);
+
+ SDValue Add = DAG.getNode(ISD::SELECT, SL, MVT::f64, And, One, Zero);
+ return DAG.getNode(ISD::FADD, SL, MVT::f64, Trunc, Add);
+}
+
+SDValue AMDGPUTargetLowering::LowerFTRUNC(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc SL(Op);
+ SDValue Src = Op.getOperand(0);
+
+ assert(Op.getValueType() == MVT::f64);
+
+ const SDValue Zero = DAG.getConstant(0, MVT::i32);
+ const SDValue One = DAG.getConstant(1, MVT::i32);
+
+ SDValue VecSrc = DAG.getNode(ISD::BITCAST, SL, MVT::v2i32, Src);
+
+ // Extract the upper half, since this is where we will find the sign and
+ // exponent.
+ SDValue Hi = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SL, MVT::i32, VecSrc, One);
+
+ const unsigned FractBits = 52;
+ const unsigned ExpBits = 11;
+
+ // Extract the exponent.
+ SDValue ExpPart = DAG.getNode(AMDGPUISD::BFE_U32, SL, MVT::i32,
+ Hi,
+ DAG.getConstant(FractBits - 32, MVT::i32),
+ DAG.getConstant(ExpBits, MVT::i32));
+ SDValue Exp = DAG.getNode(ISD::SUB, SL, MVT::i32, ExpPart,
+ DAG.getConstant(1023, MVT::i32));
+
+ // Extract the sign bit.
+ const SDValue SignBitMask = DAG.getConstant(UINT32_C(1) << 31, MVT::i32);
+ SDValue SignBit = DAG.getNode(ISD::AND, SL, MVT::i32, Hi, SignBitMask);
+
+ // Extend back to to 64-bits.
+ SDValue SignBit64 = DAG.getNode(ISD::BUILD_VECTOR, SL, MVT::v2i32,
+ Zero, SignBit);
+ SignBit64 = DAG.getNode(ISD::BITCAST, SL, MVT::i64, SignBit64);
+
+ SDValue BcInt = DAG.getNode(ISD::BITCAST, SL, MVT::i64, Src);
+ const SDValue FractMask
+ = DAG.getConstant((UINT64_C(1) << FractBits) - 1, MVT::i64);
+
+ SDValue Shr = DAG.getNode(ISD::SRA, SL, MVT::i64, FractMask, Exp);
+ SDValue Not = DAG.getNOT(SL, Shr, MVT::i64);
+ SDValue Tmp0 = DAG.getNode(ISD::AND, SL, MVT::i64, BcInt, Not);
+
+ EVT SetCCVT = getSetCCResultType(*DAG.getContext(), MVT::i32);
+
+ const SDValue FiftyOne = DAG.getConstant(FractBits - 1, MVT::i32);
+
+ SDValue ExpLt0 = DAG.getSetCC(SL, SetCCVT, Exp, Zero, ISD::SETLT);
+ SDValue ExpGt51 = DAG.getSetCC(SL, SetCCVT, Exp, FiftyOne, ISD::SETGT);
+
+ SDValue Tmp1 = DAG.getNode(ISD::SELECT, SL, MVT::i64, ExpLt0, SignBit64, Tmp0);
+ SDValue Tmp2 = DAG.getNode(ISD::SELECT, SL, MVT::i64, ExpGt51, BcInt, Tmp1);
+
+ return DAG.getNode(ISD::BITCAST, SL, MVT::f64, Tmp2);
+}
+
+SDValue AMDGPUTargetLowering::LowerFRINT(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc SL(Op);
+ SDValue Src = Op.getOperand(0);
+
+ assert(Op.getValueType() == MVT::f64);
+
+ APFloat C1Val(APFloat::IEEEdouble, "0x1.0p+52");
+ SDValue C1 = DAG.getConstantFP(C1Val, MVT::f64);
+ SDValue CopySign = DAG.getNode(ISD::FCOPYSIGN, SL, MVT::f64, C1, Src);
+
+ SDValue Tmp1 = DAG.getNode(ISD::FADD, SL, MVT::f64, Src, CopySign);
+ SDValue Tmp2 = DAG.getNode(ISD::FSUB, SL, MVT::f64, Tmp1, CopySign);
+
+ SDValue Fabs = DAG.getNode(ISD::FABS, SL, MVT::f64, Src);
+
+ APFloat C2Val(APFloat::IEEEdouble, "0x1.fffffffffffffp+51");
+ SDValue C2 = DAG.getConstantFP(C2Val, MVT::f64);
+
+ EVT SetCCVT = getSetCCResultType(*DAG.getContext(), MVT::f64);
+ SDValue Cond = DAG.getSetCC(SL, SetCCVT, Fabs, C2, ISD::SETOGT);
+
+ return DAG.getSelect(SL, MVT::f64, Cond, Src, Tmp2);
+}
+
+SDValue AMDGPUTargetLowering::LowerFNEARBYINT(SDValue Op, SelectionDAG &DAG) const {
+ // FNEARBYINT and FRINT are the same, except in their handling of FP
+ // exceptions. Those aren't really meaningful for us, and OpenCL only has
+ // rint, so just treat them as equivalent.
+ return DAG.getNode(ISD::FRINT, SDLoc(Op), Op.getValueType(), Op.getOperand(0));
+}
+
+SDValue AMDGPUTargetLowering::LowerFFLOOR(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc SL(Op);
+ SDValue Src = Op.getOperand(0);
+
+ // result = trunc(src);
+ // if (src < 0.0 && src != result)
+ // result += -1.0.
+
+ SDValue Trunc = DAG.getNode(ISD::FTRUNC, SL, MVT::f64, Src);
+
+ const SDValue Zero = DAG.getConstantFP(0.0, MVT::f64);
+ const SDValue NegOne = DAG.getConstantFP(-1.0, MVT::f64);
+
+ EVT SetCCVT = getSetCCResultType(*DAG.getContext(), MVT::f64);
+
+ SDValue Lt0 = DAG.getSetCC(SL, SetCCVT, Src, Zero, ISD::SETOLT);
+ SDValue NeTrunc = DAG.getSetCC(SL, SetCCVT, Src, Trunc, ISD::SETONE);
+ SDValue And = DAG.getNode(ISD::AND, SL, SetCCVT, Lt0, NeTrunc);
+
+ SDValue Add = DAG.getNode(ISD::SELECT, SL, MVT::f64, And, NegOne, Zero);
+ return DAG.getNode(ISD::FADD, SL, MVT::f64, Trunc, Add);
+}
+
+SDValue AMDGPUTargetLowering::LowerINT_TO_FP64(SDValue Op, SelectionDAG &DAG,
+ bool Signed) const {
+ SDLoc SL(Op);
+ SDValue Src = Op.getOperand(0);
+
+ SDValue BC = DAG.getNode(ISD::BITCAST, SL, MVT::v2i32, Src);
+
+ SDValue Lo = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SL, MVT::i32, BC,
+ DAG.getConstant(0, MVT::i32));
+ SDValue Hi = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SL, MVT::i32, BC,
+ DAG.getConstant(1, MVT::i32));
+
+ SDValue CvtHi = DAG.getNode(Signed ? ISD::SINT_TO_FP : ISD::UINT_TO_FP,
+ SL, MVT::f64, Hi);
+
+ SDValue CvtLo = DAG.getNode(ISD::UINT_TO_FP, SL, MVT::f64, Lo);
+
+ SDValue LdExp = DAG.getNode(AMDGPUISD::LDEXP, SL, MVT::f64, CvtHi,
+ DAG.getConstant(32, MVT::i32));
+
+ return DAG.getNode(ISD::FADD, SL, MVT::f64, LdExp, CvtLo);
+}
+
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)
+ if (S0.getValueType() != MVT::i64)
return SDValue();
+ EVT DestVT = Op.getValueType();
+ if (DestVT == MVT::f64)
+ return LowerINT_TO_FP64(Op, DAG, false);
+
+ assert(DestVT == MVT::f32);
+
+ SDLoc DL(Op);
+
// f32 uint_to_fp i64
SDValue Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, S0,
DAG.getConstant(0, MVT::i32));
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::LowerSINT_TO_FP(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDValue Src = Op.getOperand(0);
+ if (Src.getValueType() == MVT::i64 && Op.getValueType() == MVT::f64)
+ return LowerINT_TO_FP64(Op, DAG, true);
+
+ return SDValue();
+}
+
+SDValue AMDGPUTargetLowering::LowerFP64_TO_INT(SDValue Op, SelectionDAG &DAG,
+ bool Signed) const {
+ SDLoc SL(Op);
+
+ SDValue Src = Op.getOperand(0);
+
+ SDValue Trunc = DAG.getNode(ISD::FTRUNC, SL, MVT::f64, Src);
+
+ SDValue K0
+ = DAG.getConstantFP(BitsToDouble(UINT64_C(0x3df0000000000000)), MVT::f64);
+ SDValue K1
+ = DAG.getConstantFP(BitsToDouble(UINT64_C(0xc1f0000000000000)), MVT::f64);
+
+ SDValue Mul = DAG.getNode(ISD::FMUL, SL, MVT::f64, Trunc, K0);
+
+ SDValue FloorMul = DAG.getNode(ISD::FFLOOR, SL, MVT::f64, Mul);
+
+
+ SDValue Fma = DAG.getNode(ISD::FMA, SL, MVT::f64, FloorMul, K1, Trunc);
+
+ SDValue Hi = DAG.getNode(Signed ? ISD::FP_TO_SINT : ISD::FP_TO_UINT, SL,
+ MVT::i32, FloorMul);
+ SDValue Lo = DAG.getNode(ISD::FP_TO_UINT, SL, MVT::i32, Fma);
+
+ SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, SL, MVT::v2i32, Lo, Hi);
+
+ return DAG.getNode(ISD::BITCAST, SL, MVT::i64, Result);
+}
+
+SDValue AMDGPUTargetLowering::LowerFP_TO_SINT(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDValue Src = Op.getOperand(0);
+
+ if (Op.getValueType() == MVT::i64 && Src.getValueType() == MVT::f64)
+ return LowerFP64_TO_INT(Op, DAG, true);
+
+ return SDValue();
+}
+
+SDValue AMDGPUTargetLowering::LowerFP_TO_UINT(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDValue Src = Op.getOperand(0);
+
+ if (Op.getValueType() == MVT::i64 && Src.getValueType() == MVT::f64)
+ return LowerFP64_TO_INT(Op, DAG, false);
+
+ return SDValue();
}
SDValue AMDGPUTargetLowering::LowerSIGN_EXTEND_INREG(SDValue Op,
static SDValue constantFoldBFE(SelectionDAG &DAG, IntTy Src0,
uint32_t Offset, uint32_t Width) {
if (Width + Offset < 32) {
- IntTy Result = (Src0 << (32 - Offset - Width)) >> (32 - Width);
+ uint32_t Shl = static_cast<uint32_t>(Src0) << (32 - Offset - Width);
+ IntTy Result = static_cast<IntTy>(Shl) >> (32 - Width);
return DAG.getConstant(Result, MVT::i32);
}
return DAG.getConstant(Src0 >> Offset, MVT::i32);
}
+static bool usesAllNormalStores(SDNode *LoadVal) {
+ for (SDNode::use_iterator I = LoadVal->use_begin(); !I.atEnd(); ++I) {
+ if (!ISD::isNormalStore(*I))
+ return false;
+ }
+
+ return true;
+}
+
+// If we have a copy of an illegal type, replace it with a load / store of an
+// equivalently sized legal type. This avoids intermediate bit pack / unpack
+// instructions emitted when handling extloads and truncstores. Ideally we could
+// recognize the pack / unpack pattern to eliminate it.
+SDValue AMDGPUTargetLowering::performStoreCombine(SDNode *N,
+ DAGCombinerInfo &DCI) const {
+ if (!DCI.isBeforeLegalize())
+ return SDValue();
+
+ StoreSDNode *SN = cast<StoreSDNode>(N);
+ SDValue Value = SN->getValue();
+ EVT VT = Value.getValueType();
+
+ if (isTypeLegal(VT) || SN->isVolatile() || !ISD::isNormalLoad(Value.getNode()))
+ return SDValue();
+
+ LoadSDNode *LoadVal = cast<LoadSDNode>(Value);
+ if (LoadVal->isVolatile() || !usesAllNormalStores(LoadVal))
+ return SDValue();
+
+ EVT MemVT = LoadVal->getMemoryVT();
+
+ SDLoc SL(N);
+ SelectionDAG &DAG = DCI.DAG;
+ EVT LoadVT = getEquivalentMemType(*DAG.getContext(), MemVT);
+
+ SDValue NewLoad = DAG.getLoad(ISD::UNINDEXED, ISD::NON_EXTLOAD,
+ LoadVT, SL,
+ LoadVal->getChain(),
+ LoadVal->getBasePtr(),
+ LoadVal->getOffset(),
+ LoadVT,
+ LoadVal->getMemOperand());
+
+ SDValue CastLoad = DAG.getNode(ISD::BITCAST, SL, VT, NewLoad.getValue(0));
+ DCI.CombineTo(LoadVal, CastLoad, NewLoad.getValue(1), false);
+
+ return DAG.getStore(SN->getChain(), SL, NewLoad,
+ SN->getBasePtr(), SN->getMemOperand());
+}
+
+SDValue AMDGPUTargetLowering::performMulCombine(SDNode *N,
+ DAGCombinerInfo &DCI) const {
+ EVT VT = N->getValueType(0);
+
+ if (VT.isVector() || VT.getSizeInBits() > 32)
+ return SDValue();
+
+ SelectionDAG &DAG = DCI.DAG;
+ SDLoc DL(N);
+
+ SDValue N0 = N->getOperand(0);
+ SDValue N1 = N->getOperand(1);
+ SDValue Mul;
+
+ 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 {
+ return SDValue();
+ }
+
+ // We need to use sext even for MUL_U24, because MUL_U24 is used
+ // for signed multiply of 8 and 16-bit types.
+ return DAG.getSExtOrTrunc(Mul, DL, VT);
+}
+
SDValue AMDGPUTargetLowering::PerformDAGCombine(SDNode *N,
- DAGCombinerInfo &DCI) const {
+ 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 ISD::MUL:
+ return performMulCombine(N, DCI);
case AMDGPUISD::MUL_I24:
case AMDGPUISD::MUL_U24: {
SDValue N0 = N->getOperand(0);
return DAG.getZeroExtendInReg(BitsFrom, DL, SmallVT);
}
- if (ConstantSDNode *Val = dyn_cast<ConstantSDNode>(N->getOperand(0))) {
+ if (ConstantSDNode *CVal = dyn_cast<ConstantSDNode>(BitsFrom)) {
if (Signed) {
return constantFoldBFE<int32_t>(DAG,
- Val->getSExtValue(),
+ CVal->getSExtValue(),
OffsetVal,
WidthVal);
}
return constantFoldBFE<uint32_t>(DAG,
- Val->getZExtValue(),
+ CVal->getZExtValue(),
OffsetVal,
WidthVal);
}
- APInt Demanded = APInt::getBitsSet(32,
- OffsetVal,
- OffsetVal + WidthVal);
-
if ((OffsetVal + WidthVal) >= 32) {
SDValue ShiftVal = DAG.getConstant(OffsetVal, MVT::i32);
return DAG.getNode(Signed ? ISD::SRA : ISD::SRL, DL, MVT::i32,
BitsFrom, ShiftVal);
}
- APInt KnownZero, KnownOne;
- TargetLowering::TargetLoweringOpt TLO(DAG, !DCI.isBeforeLegalize(),
- !DCI.isBeforeLegalizeOps());
- const TargetLowering &TLI = DAG.getTargetLoweringInfo();
- if (TLO.ShrinkDemandedConstant(BitsFrom, Demanded) ||
- TLI.SimplifyDemandedBits(BitsFrom, Demanded, KnownZero, KnownOne, TLO)) {
- DCI.CommitTargetLoweringOpt(TLO);
+ if (BitsFrom.hasOneUse()) {
+ APInt Demanded = APInt::getBitsSet(32,
+ OffsetVal,
+ OffsetVal + WidthVal);
+
+ APInt KnownZero, KnownOne;
+ TargetLowering::TargetLoweringOpt TLO(DAG, !DCI.isBeforeLegalize(),
+ !DCI.isBeforeLegalizeOps());
+ const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+ if (TLO.ShrinkDemandedConstant(BitsFrom, Demanded) ||
+ TLI.SimplifyDemandedBits(BitsFrom, Demanded,
+ KnownZero, KnownOne, TLO)) {
+ DCI.CommitTargetLoweringOpt(TLO);
+ }
}
break;
}
+
+ case ISD::STORE:
+ return performStoreCombine(N, DCI);
}
return SDValue();
}
// AMDIL DAG nodes
NODE_NAME_CASE(CALL);
NODE_NAME_CASE(UMUL);
- NODE_NAME_CASE(DIV_INF);
NODE_NAME_CASE(RET_FLAG);
NODE_NAME_CASE(BRANCH_COND);
NODE_NAME_CASE(DWORDADDR)
NODE_NAME_CASE(FRACT)
NODE_NAME_CASE(CLAMP)
+ NODE_NAME_CASE(MAD)
NODE_NAME_CASE(FMAX)
NODE_NAME_CASE(SMAX)
NODE_NAME_CASE(UMAX)
NODE_NAME_CASE(FMIN)
NODE_NAME_CASE(SMIN)
NODE_NAME_CASE(UMIN)
+ NODE_NAME_CASE(URECIP)
+ NODE_NAME_CASE(DIV_SCALE)
+ NODE_NAME_CASE(DIV_FMAS)
+ NODE_NAME_CASE(DIV_FIXUP)
+ NODE_NAME_CASE(TRIG_PREOP)
+ NODE_NAME_CASE(RCP)
+ NODE_NAME_CASE(RSQ)
+ NODE_NAME_CASE(RSQ_LEGACY)
+ NODE_NAME_CASE(RSQ_CLAMPED)
+ NODE_NAME_CASE(LDEXP)
+ NODE_NAME_CASE(DOT4)
NODE_NAME_CASE(BFE_U32)
NODE_NAME_CASE(BFE_I32)
NODE_NAME_CASE(BFI)
NODE_NAME_CASE(BFM)
+ NODE_NAME_CASE(BREV)
NODE_NAME_CASE(MUL_U24)
NODE_NAME_CASE(MUL_I24)
NODE_NAME_CASE(MAD_U24)
NODE_NAME_CASE(MAD_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(CVT_F32_UBYTE1)
NODE_NAME_CASE(CVT_F32_UBYTE2)
NODE_NAME_CASE(CVT_F32_UBYTE3)
+ NODE_NAME_CASE(BUILD_VERTICAL_VECTOR)
+ NODE_NAME_CASE(CONST_DATA_PTR)
NODE_NAME_CASE(STORE_MSKOR)
NODE_NAME_CASE(TBUFFER_STORE_FORMAT)
}
unsigned BitWidth = 32;
uint32_t Width = CWidth->getZExtValue() & 0x1f;
- if (Width == 0) {
- KnownZero = APInt::getAllOnesValue(BitWidth);
- KnownOne = APInt::getNullValue(BitWidth);
- return;
- }
- // FIXME: This could do a lot more. If offset is 0, should be the same as
- // sign_extend_inreg implementation, but that involves duplicating it.
- if (Opc == AMDGPUISD::BFE_I32)
- KnownOne = APInt::getHighBitsSet(BitWidth, BitWidth - Width);
- else
+ if (Opc == AMDGPUISD::BFE_U32)
KnownZero = APInt::getHighBitsSet(BitWidth, BitWidth - Width);
break;