//
//===----------------------------------------------------------------------===//
//
-// Most of the DAG lowering is handled in AMDGPUISelLowering.cpp. This file
-// is mostly EmitInstrWithCustomInserter().
+/// \file
+/// \brief Custom DAG lowering for R600
//
//===----------------------------------------------------------------------===//
#include "R600ISelLowering.h"
-#include "AMDGPUUtil.h"
+#include "AMDGPUFrameLowering.h"
+#include "AMDGPUIntrinsicInfo.h"
+#include "AMDGPUSubtarget.h"
+#include "R600Defines.h"
#include "R600InstrInfo.h"
#include "R600MachineFunctionInfo.h"
+#include "llvm/Analysis/ValueTracking.h"
+#include "llvm/CodeGen/CallingConvLower.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/IR/Argument.h"
+#include "llvm/IR/Function.h"
using namespace llvm;
-R600TargetLowering::R600TargetLowering(TargetMachine &TM) :
- AMDGPUTargetLowering(TM),
- TII(static_cast<const R600InstrInfo*>(TM.getInstrInfo()))
-{
- setOperationAction(ISD::MUL, MVT::i64, Expand);
+R600TargetLowering::R600TargetLowering(TargetMachine &TM,
+ const AMDGPUSubtarget &STI)
+ : AMDGPUTargetLowering(TM, STI), Gen(STI.getGeneration()) {
addRegisterClass(MVT::v4f32, &AMDGPU::R600_Reg128RegClass);
addRegisterClass(MVT::f32, &AMDGPU::R600_Reg32RegClass);
addRegisterClass(MVT::v4i32, &AMDGPU::R600_Reg128RegClass);
addRegisterClass(MVT::i32, &AMDGPU::R600_Reg32RegClass);
- computeRegisterProperties();
+ addRegisterClass(MVT::v2f32, &AMDGPU::R600_Reg64RegClass);
+ addRegisterClass(MVT::v2i32, &AMDGPU::R600_Reg64RegClass);
+
+ computeRegisterProperties(STI.getRegisterInfo());
+
+ // Set condition code actions
+ setCondCodeAction(ISD::SETO, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETUO, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETLT, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETLE, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETOLT, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETOLE, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETONE, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETUEQ, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETUGE, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETUGT, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETULT, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETULE, MVT::f32, Expand);
+
+ setCondCodeAction(ISD::SETLE, MVT::i32, Expand);
+ setCondCodeAction(ISD::SETLT, MVT::i32, Expand);
+ setCondCodeAction(ISD::SETULE, MVT::i32, Expand);
+ setCondCodeAction(ISD::SETULT, MVT::i32, Expand);
+
+ setOperationAction(ISD::FCOS, MVT::f32, Custom);
+ setOperationAction(ISD::FSIN, MVT::f32, Custom);
+
+ setOperationAction(ISD::SETCC, MVT::v4i32, Expand);
+ setOperationAction(ISD::SETCC, MVT::v2i32, Expand);
+
+ setOperationAction(ISD::BR_CC, MVT::i32, Expand);
+ setOperationAction(ISD::BR_CC, MVT::f32, Expand);
+ setOperationAction(ISD::BRCOND, MVT::Other, Custom);
setOperationAction(ISD::FSUB, MVT::f32, Expand);
- setOperationAction(ISD::ROTL, MVT::i32, Custom);
+ setOperationAction(ISD::INTRINSIC_VOID, MVT::Other, Custom);
+ setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
+ setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::i1, Custom);
+
+ setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
+ setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
+
+ setOperationAction(ISD::SETCC, MVT::i32, Expand);
+ setOperationAction(ISD::SETCC, MVT::f32, Expand);
+ setOperationAction(ISD::FP_TO_UINT, MVT::i1, Custom);
+ setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
+ setOperationAction(ISD::FP_TO_UINT, MVT::i64, Custom);
+
+ setOperationAction(ISD::SELECT, MVT::i32, Expand);
+ setOperationAction(ISD::SELECT, MVT::f32, Expand);
+ setOperationAction(ISD::SELECT, MVT::v2i32, Expand);
+ setOperationAction(ISD::SELECT, MVT::v4i32, Expand);
+
+ // ADD, SUB overflow.
+ // TODO: turn these into Legal?
+ if (Subtarget->hasCARRY())
+ setOperationAction(ISD::UADDO, MVT::i32, Custom);
+
+ if (Subtarget->hasBORROW())
+ setOperationAction(ISD::USUBO, MVT::i32, Custom);
+
+ // Expand sign extension of vectors
+ if (!Subtarget->hasBFE())
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);
+
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v2i1, Expand);
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v4i1, Expand);
+
+ if (!Subtarget->hasBFE())
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8, Expand);
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v2i8, Expand);
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v4i8, Expand);
+
+ if (!Subtarget->hasBFE())
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v2i16, Expand);
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v4i16, Expand);
+
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i32, Legal);
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v2i32, Expand);
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::v4i32, Expand);
+
+ setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::Other, Expand);
+
+
+ // Legalize loads and stores to the private address space.
+ setOperationAction(ISD::LOAD, MVT::i32, Custom);
+ setOperationAction(ISD::LOAD, MVT::v2i32, Custom);
+ setOperationAction(ISD::LOAD, MVT::v4i32, Custom);
+
+ // EXTLOAD should be the same as ZEXTLOAD. It is legal for some address
+ // spaces, so it is custom lowered to handle those where it isn't.
+ for (MVT VT : MVT::integer_valuetypes()) {
+ setLoadExtAction(ISD::SEXTLOAD, VT, MVT::i1, Promote);
+ setLoadExtAction(ISD::SEXTLOAD, VT, MVT::i8, Custom);
+ setLoadExtAction(ISD::SEXTLOAD, VT, MVT::i16, Custom);
+
+ setLoadExtAction(ISD::ZEXTLOAD, VT, MVT::i1, Promote);
+ setLoadExtAction(ISD::ZEXTLOAD, VT, MVT::i8, Custom);
+ setLoadExtAction(ISD::ZEXTLOAD, VT, MVT::i16, Custom);
+
+ setLoadExtAction(ISD::EXTLOAD, VT, MVT::i1, Promote);
+ setLoadExtAction(ISD::EXTLOAD, VT, MVT::i8, Custom);
+ setLoadExtAction(ISD::EXTLOAD, VT, MVT::i16, Custom);
+ }
+
+ setOperationAction(ISD::STORE, MVT::i8, Custom);
+ setOperationAction(ISD::STORE, MVT::i32, Custom);
+ setOperationAction(ISD::STORE, MVT::v2i32, Custom);
+ setOperationAction(ISD::STORE, MVT::v4i32, Custom);
+ setTruncStoreAction(MVT::i32, MVT::i8, Custom);
+ setTruncStoreAction(MVT::i32, MVT::i16, Custom);
+
+ setOperationAction(ISD::LOAD, MVT::i32, Custom);
+ setOperationAction(ISD::LOAD, MVT::v4i32, Custom);
+ setOperationAction(ISD::FrameIndex, MVT::i32, Custom);
+
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2i32, Custom);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2f32, Custom);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v4i32, Custom);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v4f32, Custom);
- setSchedulingPreference(Sched::VLIW);
+ setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v2i32, Custom);
+ setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v2f32, Custom);
+ setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v4i32, Custom);
+ setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v4f32, Custom);
+
+ setTargetDAGCombine(ISD::FP_ROUND);
+ setTargetDAGCombine(ISD::FP_TO_SINT);
+ setTargetDAGCombine(ISD::EXTRACT_VECTOR_ELT);
+ setTargetDAGCombine(ISD::SELECT_CC);
+ setTargetDAGCombine(ISD::INSERT_VECTOR_ELT);
+
+ // We don't have 64-bit shifts. Thus we need either SHX i64 or SHX_PARTS i32
+ // to be Legal/Custom in order to avoid library calls.
+ setOperationAction(ISD::SHL_PARTS, MVT::i32, Custom);
+ setOperationAction(ISD::SRL_PARTS, MVT::i32, Custom);
+ setOperationAction(ISD::SRA_PARTS, MVT::i32, Custom);
+
+ setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
+
+ const MVT ScalarIntVTs[] = { MVT::i32, MVT::i64 };
+ for (MVT VT : ScalarIntVTs) {
+ setOperationAction(ISD::ADDC, VT, Expand);
+ setOperationAction(ISD::SUBC, VT, Expand);
+ setOperationAction(ISD::ADDE, VT, Expand);
+ setOperationAction(ISD::SUBE, VT, Expand);
+ }
+
+ setSchedulingPreference(Sched::Source);
}
MachineBasicBlock * R600TargetLowering::EmitInstrWithCustomInserter(
- MachineInstr * MI, MachineBasicBlock * BB) const
-{
+ MachineInstr * MI, MachineBasicBlock * BB) const {
MachineFunction * MF = BB->getParent();
MachineRegisterInfo &MRI = MF->getRegInfo();
MachineBasicBlock::iterator I = *MI;
+ const R600InstrInfo *TII =
+ static_cast<const R600InstrInfo *>(Subtarget->getInstrInfo());
switch (MI->getOpcode()) {
- default: return AMDGPUTargetLowering::EmitInstrWithCustomInserter(MI, BB);
- case AMDGPU::TGID_X:
- addLiveIn(MI, MF, MRI, TII, AMDGPU::T1_X);
+ default:
+ // Replace LDS_*_RET instruction that don't have any uses with the
+ // equivalent LDS_*_NORET instruction.
+ if (TII->isLDSRetInstr(MI->getOpcode())) {
+ int DstIdx = TII->getOperandIdx(MI->getOpcode(), AMDGPU::OpName::dst);
+ assert(DstIdx != -1);
+ MachineInstrBuilder NewMI;
+ // FIXME: getLDSNoRetOp method only handles LDS_1A1D LDS ops. Add
+ // LDS_1A2D support and remove this special case.
+ if (!MRI.use_empty(MI->getOperand(DstIdx).getReg()) ||
+ MI->getOpcode() == AMDGPU::LDS_CMPST_RET)
+ return BB;
+
+ NewMI = BuildMI(*BB, I, BB->findDebugLoc(I),
+ TII->get(AMDGPU::getLDSNoRetOp(MI->getOpcode())));
+ for (unsigned i = 1, e = MI->getNumOperands(); i < e; ++i) {
+ NewMI.addOperand(MI->getOperand(i));
+ }
+ } else {
+ return AMDGPUTargetLowering::EmitInstrWithCustomInserter(MI, BB);
+ }
break;
- case AMDGPU::TGID_Y:
- addLiveIn(MI, MF, MRI, TII, AMDGPU::T1_Y);
+ case AMDGPU::CLAMP_R600: {
+ MachineInstr *NewMI = TII->buildDefaultInstruction(*BB, I,
+ AMDGPU::MOV,
+ MI->getOperand(0).getReg(),
+ MI->getOperand(1).getReg());
+ TII->addFlag(NewMI, 0, MO_FLAG_CLAMP);
break;
- case AMDGPU::TGID_Z:
- addLiveIn(MI, MF, MRI, TII, AMDGPU::T1_Z);
+ }
+
+ case AMDGPU::FABS_R600: {
+ MachineInstr *NewMI = TII->buildDefaultInstruction(*BB, I,
+ AMDGPU::MOV,
+ MI->getOperand(0).getReg(),
+ MI->getOperand(1).getReg());
+ TII->addFlag(NewMI, 0, MO_FLAG_ABS);
break;
- case AMDGPU::TIDIG_X:
- addLiveIn(MI, MF, MRI, TII, AMDGPU::T0_X);
+ }
+
+ case AMDGPU::FNEG_R600: {
+ MachineInstr *NewMI = TII->buildDefaultInstruction(*BB, I,
+ AMDGPU::MOV,
+ MI->getOperand(0).getReg(),
+ MI->getOperand(1).getReg());
+ TII->addFlag(NewMI, 0, MO_FLAG_NEG);
break;
- case AMDGPU::TIDIG_Y:
- addLiveIn(MI, MF, MRI, TII, AMDGPU::T0_Y);
+ }
+
+ case AMDGPU::MASK_WRITE: {
+ unsigned maskedRegister = MI->getOperand(0).getReg();
+ assert(TargetRegisterInfo::isVirtualRegister(maskedRegister));
+ MachineInstr * defInstr = MRI.getVRegDef(maskedRegister);
+ TII->addFlag(defInstr, 0, MO_FLAG_MASK);
break;
- case AMDGPU::TIDIG_Z:
- addLiveIn(MI, MF, MRI, TII, AMDGPU::T0_Z);
+ }
+
+ case AMDGPU::MOV_IMM_F32:
+ TII->buildMovImm(*BB, I, MI->getOperand(0).getReg(),
+ MI->getOperand(1).getFPImm()->getValueAPF()
+ .bitcastToAPInt().getZExtValue());
break;
- case AMDGPU::NGROUPS_X:
- lowerImplicitParameter(MI, *BB, MRI, 0);
+ case AMDGPU::MOV_IMM_I32:
+ TII->buildMovImm(*BB, I, MI->getOperand(0).getReg(),
+ MI->getOperand(1).getImm());
break;
- case AMDGPU::NGROUPS_Y:
- lowerImplicitParameter(MI, *BB, MRI, 1);
+ case AMDGPU::CONST_COPY: {
+ MachineInstr *NewMI = TII->buildDefaultInstruction(*BB, MI, AMDGPU::MOV,
+ MI->getOperand(0).getReg(), AMDGPU::ALU_CONST);
+ TII->setImmOperand(NewMI, AMDGPU::OpName::src0_sel,
+ MI->getOperand(1).getImm());
break;
- case AMDGPU::NGROUPS_Z:
- lowerImplicitParameter(MI, *BB, MRI, 2);
+ }
+
+ case AMDGPU::RAT_WRITE_CACHELESS_32_eg:
+ case AMDGPU::RAT_WRITE_CACHELESS_64_eg:
+ case AMDGPU::RAT_WRITE_CACHELESS_128_eg: {
+ unsigned EOP = (std::next(I)->getOpcode() == AMDGPU::RETURN) ? 1 : 0;
+
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(MI->getOpcode()))
+ .addOperand(MI->getOperand(0))
+ .addOperand(MI->getOperand(1))
+ .addImm(EOP); // Set End of program bit
break;
- case AMDGPU::GLOBAL_SIZE_X:
- lowerImplicitParameter(MI, *BB, MRI, 3);
+ }
+
+ case AMDGPU::TXD: {
+ unsigned T0 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
+ unsigned T1 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
+ MachineOperand &RID = MI->getOperand(4);
+ MachineOperand &SID = MI->getOperand(5);
+ unsigned TextureId = MI->getOperand(6).getImm();
+ unsigned SrcX = 0, SrcY = 1, SrcZ = 2, SrcW = 3;
+ unsigned CTX = 1, CTY = 1, CTZ = 1, CTW = 1;
+
+ switch (TextureId) {
+ case 5: // Rect
+ CTX = CTY = 0;
+ break;
+ case 6: // Shadow1D
+ SrcW = SrcZ;
+ break;
+ case 7: // Shadow2D
+ SrcW = SrcZ;
+ break;
+ case 8: // ShadowRect
+ CTX = CTY = 0;
+ SrcW = SrcZ;
+ break;
+ case 9: // 1DArray
+ SrcZ = SrcY;
+ CTZ = 0;
+ break;
+ case 10: // 2DArray
+ CTZ = 0;
+ break;
+ case 11: // Shadow1DArray
+ SrcZ = SrcY;
+ CTZ = 0;
+ break;
+ case 12: // Shadow2DArray
+ CTZ = 0;
+ break;
+ }
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_H), T0)
+ .addOperand(MI->getOperand(3))
+ .addImm(SrcX)
+ .addImm(SrcY)
+ .addImm(SrcZ)
+ .addImm(SrcW)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(1)
+ .addImm(2)
+ .addImm(3)
+ .addOperand(RID)
+ .addOperand(SID)
+ .addImm(CTX)
+ .addImm(CTY)
+ .addImm(CTZ)
+ .addImm(CTW);
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_V), T1)
+ .addOperand(MI->getOperand(2))
+ .addImm(SrcX)
+ .addImm(SrcY)
+ .addImm(SrcZ)
+ .addImm(SrcW)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(1)
+ .addImm(2)
+ .addImm(3)
+ .addOperand(RID)
+ .addOperand(SID)
+ .addImm(CTX)
+ .addImm(CTY)
+ .addImm(CTZ)
+ .addImm(CTW);
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SAMPLE_G))
+ .addOperand(MI->getOperand(0))
+ .addOperand(MI->getOperand(1))
+ .addImm(SrcX)
+ .addImm(SrcY)
+ .addImm(SrcZ)
+ .addImm(SrcW)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(1)
+ .addImm(2)
+ .addImm(3)
+ .addOperand(RID)
+ .addOperand(SID)
+ .addImm(CTX)
+ .addImm(CTY)
+ .addImm(CTZ)
+ .addImm(CTW)
+ .addReg(T0, RegState::Implicit)
+ .addReg(T1, RegState::Implicit);
break;
- case AMDGPU::GLOBAL_SIZE_Y:
- lowerImplicitParameter(MI, *BB, MRI, 4);
+ }
+
+ case AMDGPU::TXD_SHADOW: {
+ unsigned T0 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
+ unsigned T1 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
+ MachineOperand &RID = MI->getOperand(4);
+ MachineOperand &SID = MI->getOperand(5);
+ unsigned TextureId = MI->getOperand(6).getImm();
+ unsigned SrcX = 0, SrcY = 1, SrcZ = 2, SrcW = 3;
+ unsigned CTX = 1, CTY = 1, CTZ = 1, CTW = 1;
+
+ switch (TextureId) {
+ case 5: // Rect
+ CTX = CTY = 0;
+ break;
+ case 6: // Shadow1D
+ SrcW = SrcZ;
+ break;
+ case 7: // Shadow2D
+ SrcW = SrcZ;
+ break;
+ case 8: // ShadowRect
+ CTX = CTY = 0;
+ SrcW = SrcZ;
+ break;
+ case 9: // 1DArray
+ SrcZ = SrcY;
+ CTZ = 0;
+ break;
+ case 10: // 2DArray
+ CTZ = 0;
+ break;
+ case 11: // Shadow1DArray
+ SrcZ = SrcY;
+ CTZ = 0;
+ break;
+ case 12: // Shadow2DArray
+ CTZ = 0;
+ break;
+ }
+
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_H), T0)
+ .addOperand(MI->getOperand(3))
+ .addImm(SrcX)
+ .addImm(SrcY)
+ .addImm(SrcZ)
+ .addImm(SrcW)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(1)
+ .addImm(2)
+ .addImm(3)
+ .addOperand(RID)
+ .addOperand(SID)
+ .addImm(CTX)
+ .addImm(CTY)
+ .addImm(CTZ)
+ .addImm(CTW);
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_V), T1)
+ .addOperand(MI->getOperand(2))
+ .addImm(SrcX)
+ .addImm(SrcY)
+ .addImm(SrcZ)
+ .addImm(SrcW)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(1)
+ .addImm(2)
+ .addImm(3)
+ .addOperand(RID)
+ .addOperand(SID)
+ .addImm(CTX)
+ .addImm(CTY)
+ .addImm(CTZ)
+ .addImm(CTW);
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SAMPLE_C_G))
+ .addOperand(MI->getOperand(0))
+ .addOperand(MI->getOperand(1))
+ .addImm(SrcX)
+ .addImm(SrcY)
+ .addImm(SrcZ)
+ .addImm(SrcW)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(0)
+ .addImm(1)
+ .addImm(2)
+ .addImm(3)
+ .addOperand(RID)
+ .addOperand(SID)
+ .addImm(CTX)
+ .addImm(CTY)
+ .addImm(CTZ)
+ .addImm(CTW)
+ .addReg(T0, RegState::Implicit)
+ .addReg(T1, RegState::Implicit);
break;
- case AMDGPU::GLOBAL_SIZE_Z:
- lowerImplicitParameter(MI, *BB, MRI, 5);
+ }
+
+ case AMDGPU::BRANCH:
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::JUMP))
+ .addOperand(MI->getOperand(0));
+ break;
+
+ case AMDGPU::BRANCH_COND_f32: {
+ MachineInstr *NewMI =
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::PRED_X),
+ AMDGPU::PREDICATE_BIT)
+ .addOperand(MI->getOperand(1))
+ .addImm(OPCODE_IS_NOT_ZERO)
+ .addImm(0); // Flags
+ TII->addFlag(NewMI, 0, MO_FLAG_PUSH);
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::JUMP_COND))
+ .addOperand(MI->getOperand(0))
+ .addReg(AMDGPU::PREDICATE_BIT, RegState::Kill);
break;
- case AMDGPU::LOCAL_SIZE_X:
- lowerImplicitParameter(MI, *BB, MRI, 6);
+ }
+
+ case AMDGPU::BRANCH_COND_i32: {
+ MachineInstr *NewMI =
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::PRED_X),
+ AMDGPU::PREDICATE_BIT)
+ .addOperand(MI->getOperand(1))
+ .addImm(OPCODE_IS_NOT_ZERO_INT)
+ .addImm(0); // Flags
+ TII->addFlag(NewMI, 0, MO_FLAG_PUSH);
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::JUMP_COND))
+ .addOperand(MI->getOperand(0))
+ .addReg(AMDGPU::PREDICATE_BIT, RegState::Kill);
break;
- case AMDGPU::LOCAL_SIZE_Y:
- lowerImplicitParameter(MI, *BB, MRI, 7);
+ }
+
+ case AMDGPU::EG_ExportSwz:
+ case AMDGPU::R600_ExportSwz: {
+ // Instruction is left unmodified if its not the last one of its type
+ bool isLastInstructionOfItsType = true;
+ unsigned InstExportType = MI->getOperand(1).getImm();
+ for (MachineBasicBlock::iterator NextExportInst = std::next(I),
+ EndBlock = BB->end(); NextExportInst != EndBlock;
+ NextExportInst = std::next(NextExportInst)) {
+ if (NextExportInst->getOpcode() == AMDGPU::EG_ExportSwz ||
+ NextExportInst->getOpcode() == AMDGPU::R600_ExportSwz) {
+ unsigned CurrentInstExportType = NextExportInst->getOperand(1)
+ .getImm();
+ if (CurrentInstExportType == InstExportType) {
+ isLastInstructionOfItsType = false;
+ break;
+ }
+ }
+ }
+ bool EOP = (std::next(I)->getOpcode() == AMDGPU::RETURN) ? 1 : 0;
+ if (!EOP && !isLastInstructionOfItsType)
+ return BB;
+ unsigned CfInst = (MI->getOpcode() == AMDGPU::EG_ExportSwz)? 84 : 40;
+ BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(MI->getOpcode()))
+ .addOperand(MI->getOperand(0))
+ .addOperand(MI->getOperand(1))
+ .addOperand(MI->getOperand(2))
+ .addOperand(MI->getOperand(3))
+ .addOperand(MI->getOperand(4))
+ .addOperand(MI->getOperand(5))
+ .addOperand(MI->getOperand(6))
+ .addImm(CfInst)
+ .addImm(EOP);
break;
- case AMDGPU::LOCAL_SIZE_Z:
- lowerImplicitParameter(MI, *BB, MRI, 8);
+ }
+ case AMDGPU::RETURN: {
+ // RETURN instructions must have the live-out registers as implicit uses,
+ // otherwise they appear dead.
+ R600MachineFunctionInfo *MFI = MF->getInfo<R600MachineFunctionInfo>();
+ MachineInstrBuilder MIB(*MF, MI);
+ for (unsigned i = 0, e = MFI->LiveOuts.size(); i != e; ++i)
+ MIB.addReg(MFI->LiveOuts[i], RegState::Implicit);
+ return BB;
+ }
+ }
+
+ MI->eraseFromParent();
+ return BB;
+}
+
+//===----------------------------------------------------------------------===//
+// Custom DAG Lowering Operations
+//===----------------------------------------------------------------------===//
+
+SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
+ MachineFunction &MF = DAG.getMachineFunction();
+ R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>();
+ switch (Op.getOpcode()) {
+ default: return AMDGPUTargetLowering::LowerOperation(Op, DAG);
+ case ISD::EXTRACT_VECTOR_ELT: return LowerEXTRACT_VECTOR_ELT(Op, DAG);
+ case ISD::INSERT_VECTOR_ELT: return LowerINSERT_VECTOR_ELT(Op, DAG);
+ case ISD::SHL_PARTS: return LowerSHLParts(Op, DAG);
+ case ISD::SRA_PARTS:
+ case ISD::SRL_PARTS: return LowerSRXParts(Op, DAG);
+ case ISD::UADDO: return LowerUADDSUBO(Op, DAG, ISD::ADD, AMDGPUISD::CARRY);
+ case ISD::USUBO: return LowerUADDSUBO(Op, DAG, ISD::SUB, AMDGPUISD::BORROW);
+ case ISD::FCOS:
+ case ISD::FSIN: return LowerTrig(Op, DAG);
+ case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG);
+ case ISD::STORE: return LowerSTORE(Op, DAG);
+ case ISD::LOAD: {
+ SDValue Result = LowerLOAD(Op, DAG);
+ assert((!Result.getNode() ||
+ Result.getNode()->getNumValues() == 2) &&
+ "Load should return a value and a chain");
+ return Result;
+ }
+
+ case ISD::BRCOND: return LowerBRCOND(Op, DAG);
+ case ISD::GlobalAddress: return LowerGlobalAddress(MFI, Op, DAG);
+ case ISD::INTRINSIC_VOID: {
+ SDValue Chain = Op.getOperand(0);
+ unsigned IntrinsicID =
+ cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
+ switch (IntrinsicID) {
+ case AMDGPUIntrinsic::AMDGPU_store_output: {
+ int64_t RegIndex = cast<ConstantSDNode>(Op.getOperand(3))->getZExtValue();
+ unsigned Reg = AMDGPU::R600_TReg32RegClass.getRegister(RegIndex);
+ MFI->LiveOuts.push_back(Reg);
+ return DAG.getCopyToReg(Chain, SDLoc(Op), Reg, Op.getOperand(2));
+ }
+ case AMDGPUIntrinsic::R600_store_swizzle: {
+ SDLoc DL(Op);
+ const SDValue Args[8] = {
+ Chain,
+ Op.getOperand(2), // Export Value
+ Op.getOperand(3), // ArrayBase
+ Op.getOperand(4), // Type
+ DAG.getConstant(0, DL, MVT::i32), // SWZ_X
+ DAG.getConstant(1, DL, MVT::i32), // SWZ_Y
+ DAG.getConstant(2, DL, MVT::i32), // SWZ_Z
+ DAG.getConstant(3, DL, MVT::i32) // SWZ_W
+ };
+ return DAG.getNode(AMDGPUISD::EXPORT, DL, Op.getValueType(), Args);
+ }
+
+ // default for switch(IntrinsicID)
+ default: break;
+ }
+ // break out of case ISD::INTRINSIC_VOID in switch(Op.getOpcode())
break;
+ }
+ case ISD::INTRINSIC_WO_CHAIN: {
+ unsigned IntrinsicID =
+ cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
+ EVT VT = Op.getValueType();
+ SDLoc DL(Op);
+ switch(IntrinsicID) {
+ default: return AMDGPUTargetLowering::LowerOperation(Op, DAG);
+ case AMDGPUIntrinsic::R600_load_input: {
+ int64_t RegIndex = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
+ unsigned Reg = AMDGPU::R600_TReg32RegClass.getRegister(RegIndex);
+ MachineFunction &MF = DAG.getMachineFunction();
+ MachineRegisterInfo &MRI = MF.getRegInfo();
+ MRI.addLiveIn(Reg);
+ return DAG.getCopyFromReg(DAG.getEntryNode(),
+ SDLoc(DAG.getEntryNode()), Reg, VT);
+ }
- case AMDGPU::CLAMP_R600:
- MI->getOperand(0).addTargetFlag(MO_FLAG_CLAMP);
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::MOV))
- .addOperand(MI->getOperand(0))
- .addOperand(MI->getOperand(1));
+ case AMDGPUIntrinsic::R600_interp_input: {
+ int slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
+ int ijb = cast<ConstantSDNode>(Op.getOperand(2))->getSExtValue();
+ MachineSDNode *interp;
+ if (ijb < 0) {
+ const R600InstrInfo *TII =
+ static_cast<const R600InstrInfo *>(Subtarget->getInstrInfo());
+ interp = DAG.getMachineNode(AMDGPU::INTERP_VEC_LOAD, DL,
+ MVT::v4f32, DAG.getTargetConstant(slot / 4, DL, MVT::i32));
+ return DAG.getTargetExtractSubreg(
+ TII->getRegisterInfo().getSubRegFromChannel(slot % 4),
+ DL, MVT::f32, SDValue(interp, 0));
+ }
+ MachineFunction &MF = DAG.getMachineFunction();
+ MachineRegisterInfo &MRI = MF.getRegInfo();
+ unsigned RegisterI = AMDGPU::R600_TReg32RegClass.getRegister(2 * ijb);
+ unsigned RegisterJ = AMDGPU::R600_TReg32RegClass.getRegister(2 * ijb + 1);
+ MRI.addLiveIn(RegisterI);
+ MRI.addLiveIn(RegisterJ);
+ SDValue RegisterINode = DAG.getCopyFromReg(DAG.getEntryNode(),
+ SDLoc(DAG.getEntryNode()), RegisterI, MVT::f32);
+ SDValue RegisterJNode = DAG.getCopyFromReg(DAG.getEntryNode(),
+ SDLoc(DAG.getEntryNode()), RegisterJ, MVT::f32);
+
+ if (slot % 4 < 2)
+ interp = DAG.getMachineNode(AMDGPU::INTERP_PAIR_XY, DL,
+ MVT::f32, MVT::f32, DAG.getTargetConstant(slot / 4, DL, MVT::i32),
+ RegisterJNode, RegisterINode);
+ else
+ interp = DAG.getMachineNode(AMDGPU::INTERP_PAIR_ZW, DL,
+ MVT::f32, MVT::f32, DAG.getTargetConstant(slot / 4, DL, MVT::i32),
+ RegisterJNode, RegisterINode);
+ return SDValue(interp, slot % 2);
+ }
+ case AMDGPUIntrinsic::R600_interp_xy:
+ case AMDGPUIntrinsic::R600_interp_zw: {
+ int slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
+ MachineSDNode *interp;
+ SDValue RegisterINode = Op.getOperand(2);
+ SDValue RegisterJNode = Op.getOperand(3);
+
+ if (IntrinsicID == AMDGPUIntrinsic::R600_interp_xy)
+ interp = DAG.getMachineNode(AMDGPU::INTERP_PAIR_XY, DL,
+ MVT::f32, MVT::f32, DAG.getTargetConstant(slot, DL, MVT::i32),
+ RegisterJNode, RegisterINode);
+ else
+ interp = DAG.getMachineNode(AMDGPU::INTERP_PAIR_ZW, DL,
+ MVT::f32, MVT::f32, DAG.getTargetConstant(slot, DL, MVT::i32),
+ RegisterJNode, RegisterINode);
+ return DAG.getNode(ISD::BUILD_VECTOR, DL, MVT::v2f32,
+ SDValue(interp, 0), SDValue(interp, 1));
+ }
+ case AMDGPUIntrinsic::R600_tex:
+ case AMDGPUIntrinsic::R600_texc:
+ case AMDGPUIntrinsic::R600_txl:
+ case AMDGPUIntrinsic::R600_txlc:
+ case AMDGPUIntrinsic::R600_txb:
+ case AMDGPUIntrinsic::R600_txbc:
+ case AMDGPUIntrinsic::R600_txf:
+ case AMDGPUIntrinsic::R600_txq:
+ case AMDGPUIntrinsic::R600_ddx:
+ case AMDGPUIntrinsic::R600_ddy:
+ case AMDGPUIntrinsic::R600_ldptr: {
+ unsigned TextureOp;
+ switch (IntrinsicID) {
+ case AMDGPUIntrinsic::R600_tex:
+ TextureOp = 0;
+ break;
+ case AMDGPUIntrinsic::R600_texc:
+ TextureOp = 1;
+ break;
+ case AMDGPUIntrinsic::R600_txl:
+ TextureOp = 2;
+ break;
+ case AMDGPUIntrinsic::R600_txlc:
+ TextureOp = 3;
+ break;
+ case AMDGPUIntrinsic::R600_txb:
+ TextureOp = 4;
+ break;
+ case AMDGPUIntrinsic::R600_txbc:
+ TextureOp = 5;
+ break;
+ case AMDGPUIntrinsic::R600_txf:
+ TextureOp = 6;
+ break;
+ case AMDGPUIntrinsic::R600_txq:
+ TextureOp = 7;
+ break;
+ case AMDGPUIntrinsic::R600_ddx:
+ TextureOp = 8;
+ break;
+ case AMDGPUIntrinsic::R600_ddy:
+ TextureOp = 9;
+ break;
+ case AMDGPUIntrinsic::R600_ldptr:
+ TextureOp = 10;
+ break;
+ default:
+ llvm_unreachable("Unknow Texture Operation");
+ }
+
+ SDValue TexArgs[19] = {
+ DAG.getConstant(TextureOp, DL, MVT::i32),
+ Op.getOperand(1),
+ DAG.getConstant(0, DL, MVT::i32),
+ DAG.getConstant(1, DL, MVT::i32),
+ DAG.getConstant(2, DL, MVT::i32),
+ DAG.getConstant(3, DL, MVT::i32),
+ Op.getOperand(2),
+ Op.getOperand(3),
+ Op.getOperand(4),
+ DAG.getConstant(0, DL, MVT::i32),
+ DAG.getConstant(1, DL, MVT::i32),
+ DAG.getConstant(2, DL, MVT::i32),
+ DAG.getConstant(3, DL, MVT::i32),
+ Op.getOperand(5),
+ Op.getOperand(6),
+ Op.getOperand(7),
+ Op.getOperand(8),
+ Op.getOperand(9),
+ Op.getOperand(10)
+ };
+ return DAG.getNode(AMDGPUISD::TEXTURE_FETCH, DL, MVT::v4f32, TexArgs);
+ }
+ case AMDGPUIntrinsic::AMDGPU_dp4: {
+ SDValue Args[8] = {
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(1),
+ DAG.getConstant(0, DL, MVT::i32)),
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(2),
+ DAG.getConstant(0, DL, MVT::i32)),
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(1),
+ DAG.getConstant(1, DL, MVT::i32)),
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(2),
+ DAG.getConstant(1, DL, MVT::i32)),
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(1),
+ DAG.getConstant(2, DL, MVT::i32)),
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(2),
+ DAG.getConstant(2, DL, MVT::i32)),
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(1),
+ DAG.getConstant(3, DL, MVT::i32)),
+ DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::f32, Op.getOperand(2),
+ DAG.getConstant(3, DL, MVT::i32))
+ };
+ return DAG.getNode(AMDGPUISD::DOT4, DL, MVT::f32, Args);
+ }
+
+ case Intrinsic::r600_read_ngroups_x:
+ return LowerImplicitParameter(DAG, VT, DL, 0);
+ case Intrinsic::r600_read_ngroups_y:
+ return LowerImplicitParameter(DAG, VT, DL, 1);
+ case Intrinsic::r600_read_ngroups_z:
+ return LowerImplicitParameter(DAG, VT, DL, 2);
+ case Intrinsic::r600_read_global_size_x:
+ return LowerImplicitParameter(DAG, VT, DL, 3);
+ case Intrinsic::r600_read_global_size_y:
+ return LowerImplicitParameter(DAG, VT, DL, 4);
+ case Intrinsic::r600_read_global_size_z:
+ return LowerImplicitParameter(DAG, VT, DL, 5);
+ case Intrinsic::r600_read_local_size_x:
+ return LowerImplicitParameter(DAG, VT, DL, 6);
+ case Intrinsic::r600_read_local_size_y:
+ return LowerImplicitParameter(DAG, VT, DL, 7);
+ case Intrinsic::r600_read_local_size_z:
+ return LowerImplicitParameter(DAG, VT, DL, 8);
+
+ case Intrinsic::AMDGPU_read_workdim: {
+ uint32_t ByteOffset = getImplicitParameterOffset(MFI, GRID_DIM);
+ return LowerImplicitParameter(DAG, VT, DL, ByteOffset / 4);
+ }
+
+ case Intrinsic::r600_read_tgid_x:
+ return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
+ AMDGPU::T1_X, VT);
+ case Intrinsic::r600_read_tgid_y:
+ return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
+ AMDGPU::T1_Y, VT);
+ case Intrinsic::r600_read_tgid_z:
+ return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
+ AMDGPU::T1_Z, VT);
+ case Intrinsic::r600_read_tidig_x:
+ return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
+ AMDGPU::T0_X, VT);
+ case Intrinsic::r600_read_tidig_y:
+ return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
+ AMDGPU::T0_Y, VT);
+ case Intrinsic::r600_read_tidig_z:
+ return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
+ AMDGPU::T0_Z, VT);
+ case Intrinsic::AMDGPU_rsq:
+ // XXX - I'm assuming SI's RSQ_LEGACY matches R600's behavior.
+ return DAG.getNode(AMDGPUISD::RSQ_LEGACY, DL, VT, Op.getOperand(1));
+
+ case AMDGPUIntrinsic::AMDGPU_fract:
+ case AMDGPUIntrinsic::AMDIL_fraction: // Legacy name.
+ return DAG.getNode(AMDGPUISD::FRACT, DL, VT, Op.getOperand(1));
+ }
+ // break out of case ISD::INTRINSIC_WO_CHAIN in switch(Op.getOpcode())
break;
+ }
+ } // end switch(Op.getOpcode())
+ return SDValue();
+}
- case AMDGPU::FABS_R600:
- MI->getOperand(1).addTargetFlag(MO_FLAG_ABS);
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::MOV))
- .addOperand(MI->getOperand(0))
- .addOperand(MI->getOperand(1));
+void R600TargetLowering::ReplaceNodeResults(SDNode *N,
+ SmallVectorImpl<SDValue> &Results,
+ SelectionDAG &DAG) const {
+ switch (N->getOpcode()) {
+ default:
+ AMDGPUTargetLowering::ReplaceNodeResults(N, Results, DAG);
+ return;
+ case ISD::FP_TO_UINT:
+ if (N->getValueType(0) == MVT::i1) {
+ Results.push_back(LowerFPTOUINT(N->getOperand(0), DAG));
+ return;
+ }
+ // Fall-through. Since we don't care about out of bounds values
+ // we can use FP_TO_SINT for uints too. The DAGLegalizer code for uint
+ // considers some extra cases which are not necessary here.
+ case ISD::FP_TO_SINT: {
+ SDValue Result;
+ if (expandFP_TO_SINT(N, Result, DAG))
+ Results.push_back(Result);
+ return;
+ }
+ case ISD::SDIVREM: {
+ SDValue Op = SDValue(N, 1);
+ SDValue RES = LowerSDIVREM(Op, DAG);
+ Results.push_back(RES);
+ Results.push_back(RES.getValue(1));
break;
+ }
+ case ISD::UDIVREM: {
+ SDValue Op = SDValue(N, 0);
+ LowerUDIVREM64(Op, DAG, Results);
+ break;
+ }
+ }
+}
- case AMDGPU::FNEG_R600:
- MI->getOperand(1).addTargetFlag(MO_FLAG_NEG);
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::MOV))
- .addOperand(MI->getOperand(0))
- .addOperand(MI->getOperand(1));
+SDValue R600TargetLowering::vectorToVerticalVector(SelectionDAG &DAG,
+ SDValue Vector) const {
+
+ SDLoc DL(Vector);
+ EVT VecVT = Vector.getValueType();
+ EVT EltVT = VecVT.getVectorElementType();
+ SmallVector<SDValue, 8> Args;
+
+ for (unsigned i = 0, e = VecVT.getVectorNumElements();
+ i != e; ++i) {
+ Args.push_back(DAG.getNode(
+ ISD::EXTRACT_VECTOR_ELT, DL, EltVT, Vector,
+ DAG.getConstant(i, DL, getVectorIdxTy(DAG.getDataLayout()))));
+ }
+
+ return DAG.getNode(AMDGPUISD::BUILD_VERTICAL_VECTOR, DL, VecVT, Args);
+}
+
+SDValue R600TargetLowering::LowerEXTRACT_VECTOR_ELT(SDValue Op,
+ SelectionDAG &DAG) const {
+
+ SDLoc DL(Op);
+ SDValue Vector = Op.getOperand(0);
+ SDValue Index = Op.getOperand(1);
+
+ if (isa<ConstantSDNode>(Index) ||
+ Vector.getOpcode() == AMDGPUISD::BUILD_VERTICAL_VECTOR)
+ return Op;
+
+ Vector = vectorToVerticalVector(DAG, Vector);
+ return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, Op.getValueType(),
+ Vector, Index);
+}
+
+SDValue R600TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ SDValue Vector = Op.getOperand(0);
+ SDValue Value = Op.getOperand(1);
+ SDValue Index = Op.getOperand(2);
+
+ if (isa<ConstantSDNode>(Index) ||
+ Vector.getOpcode() == AMDGPUISD::BUILD_VERTICAL_VECTOR)
+ return Op;
+
+ Vector = vectorToVerticalVector(DAG, Vector);
+ SDValue Insert = DAG.getNode(ISD::INSERT_VECTOR_ELT, DL, Op.getValueType(),
+ Vector, Value, Index);
+ return vectorToVerticalVector(DAG, Insert);
+}
+
+SDValue R600TargetLowering::LowerTrig(SDValue Op, SelectionDAG &DAG) const {
+ // On hw >= R700, COS/SIN input must be between -1. and 1.
+ // Thus we lower them to TRIG ( FRACT ( x / 2Pi + 0.5) - 0.5)
+ EVT VT = Op.getValueType();
+ SDValue Arg = Op.getOperand(0);
+ SDLoc DL(Op);
+ SDValue FractPart = DAG.getNode(AMDGPUISD::FRACT, DL, VT,
+ DAG.getNode(ISD::FADD, DL, VT,
+ DAG.getNode(ISD::FMUL, DL, VT, Arg,
+ DAG.getConstantFP(0.15915494309, DL, MVT::f32)),
+ DAG.getConstantFP(0.5, DL, MVT::f32)));
+ unsigned TrigNode;
+ switch (Op.getOpcode()) {
+ case ISD::FCOS:
+ TrigNode = AMDGPUISD::COS_HW;
break;
+ case ISD::FSIN:
+ TrigNode = AMDGPUISD::SIN_HW;
+ break;
+ default:
+ llvm_unreachable("Wrong trig opcode");
+ }
+ SDValue TrigVal = DAG.getNode(TrigNode, DL, VT,
+ DAG.getNode(ISD::FADD, DL, VT, FractPart,
+ DAG.getConstantFP(-0.5, DL, MVT::f32)));
+ if (Gen >= AMDGPUSubtarget::R700)
+ return TrigVal;
+ // On R600 hw, COS/SIN input must be between -Pi and Pi.
+ return DAG.getNode(ISD::FMUL, DL, VT, TrigVal,
+ DAG.getConstantFP(3.14159265359, DL, MVT::f32));
+}
- case AMDGPU::R600_LOAD_CONST:
- {
- int64_t RegIndex = MI->getOperand(1).getImm();
- unsigned ConstantReg = AMDGPU::R600_CReg32RegClass.getRegister(RegIndex);
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::COPY))
- .addOperand(MI->getOperand(0))
- .addReg(ConstantReg);
- break;
+SDValue R600TargetLowering::LowerSHLParts(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+
+ SDValue Lo = Op.getOperand(0);
+ SDValue Hi = Op.getOperand(1);
+ SDValue Shift = Op.getOperand(2);
+ SDValue Zero = DAG.getConstant(0, DL, VT);
+ SDValue One = DAG.getConstant(1, DL, VT);
+
+ SDValue Width = DAG.getConstant(VT.getSizeInBits(), DL, VT);
+ SDValue Width1 = DAG.getConstant(VT.getSizeInBits() - 1, DL, VT);
+ SDValue BigShift = DAG.getNode(ISD::SUB, DL, VT, Shift, Width);
+ SDValue CompShift = DAG.getNode(ISD::SUB, DL, VT, Width1, Shift);
+
+ // The dance around Width1 is necessary for 0 special case.
+ // Without it the CompShift might be 32, producing incorrect results in
+ // Overflow. So we do the shift in two steps, the alternative is to
+ // add a conditional to filter the special case.
+
+ SDValue Overflow = DAG.getNode(ISD::SRL, DL, VT, Lo, CompShift);
+ Overflow = DAG.getNode(ISD::SRL, DL, VT, Overflow, One);
+
+ SDValue HiSmall = DAG.getNode(ISD::SHL, DL, VT, Hi, Shift);
+ HiSmall = DAG.getNode(ISD::OR, DL, VT, HiSmall, Overflow);
+ SDValue LoSmall = DAG.getNode(ISD::SHL, DL, VT, Lo, Shift);
+
+ SDValue HiBig = DAG.getNode(ISD::SHL, DL, VT, Lo, BigShift);
+ SDValue LoBig = Zero;
+
+ Hi = DAG.getSelectCC(DL, Shift, Width, HiSmall, HiBig, ISD::SETULT);
+ Lo = DAG.getSelectCC(DL, Shift, Width, LoSmall, LoBig, ISD::SETULT);
+
+ return DAG.getNode(ISD::MERGE_VALUES, DL, DAG.getVTList(VT,VT), Lo, Hi);
+}
+
+SDValue R600TargetLowering::LowerSRXParts(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+
+ SDValue Lo = Op.getOperand(0);
+ SDValue Hi = Op.getOperand(1);
+ SDValue Shift = Op.getOperand(2);
+ SDValue Zero = DAG.getConstant(0, DL, VT);
+ SDValue One = DAG.getConstant(1, DL, VT);
+
+ const bool SRA = Op.getOpcode() == ISD::SRA_PARTS;
+
+ SDValue Width = DAG.getConstant(VT.getSizeInBits(), DL, VT);
+ SDValue Width1 = DAG.getConstant(VT.getSizeInBits() - 1, DL, VT);
+ SDValue BigShift = DAG.getNode(ISD::SUB, DL, VT, Shift, Width);
+ SDValue CompShift = DAG.getNode(ISD::SUB, DL, VT, Width1, Shift);
+
+ // The dance around Width1 is necessary for 0 special case.
+ // Without it the CompShift might be 32, producing incorrect results in
+ // Overflow. So we do the shift in two steps, the alternative is to
+ // add a conditional to filter the special case.
+
+ SDValue Overflow = DAG.getNode(ISD::SHL, DL, VT, Hi, CompShift);
+ Overflow = DAG.getNode(ISD::SHL, DL, VT, Overflow, One);
+
+ SDValue HiSmall = DAG.getNode(SRA ? ISD::SRA : ISD::SRL, DL, VT, Hi, Shift);
+ SDValue LoSmall = DAG.getNode(ISD::SRL, DL, VT, Lo, Shift);
+ LoSmall = DAG.getNode(ISD::OR, DL, VT, LoSmall, Overflow);
+
+ SDValue LoBig = DAG.getNode(SRA ? ISD::SRA : ISD::SRL, DL, VT, Hi, BigShift);
+ SDValue HiBig = SRA ? DAG.getNode(ISD::SRA, DL, VT, Hi, Width1) : Zero;
+
+ Hi = DAG.getSelectCC(DL, Shift, Width, HiSmall, HiBig, ISD::SETULT);
+ Lo = DAG.getSelectCC(DL, Shift, Width, LoSmall, LoBig, ISD::SETULT);
+
+ return DAG.getNode(ISD::MERGE_VALUES, DL, DAG.getVTList(VT,VT), Lo, Hi);
+}
+
+SDValue R600TargetLowering::LowerUADDSUBO(SDValue Op, SelectionDAG &DAG,
+ unsigned mainop, unsigned ovf) const {
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+
+ SDValue Lo = Op.getOperand(0);
+ SDValue Hi = Op.getOperand(1);
+
+ SDValue OVF = DAG.getNode(ovf, DL, VT, Lo, Hi);
+ // Extend sign.
+ OVF = DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, VT, OVF,
+ DAG.getValueType(MVT::i1));
+
+ SDValue Res = DAG.getNode(mainop, DL, VT, Lo, Hi);
+
+ return DAG.getNode(ISD::MERGE_VALUES, DL, DAG.getVTList(VT, VT), Res, OVF);
+}
+
+SDValue R600TargetLowering::LowerFPTOUINT(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ return DAG.getNode(
+ ISD::SETCC,
+ DL,
+ MVT::i1,
+ Op, DAG.getConstantFP(0.0f, DL, MVT::f32),
+ DAG.getCondCode(ISD::SETNE)
+ );
+}
+
+SDValue R600TargetLowering::LowerImplicitParameter(SelectionDAG &DAG, EVT VT,
+ SDLoc DL,
+ unsigned DwordOffset) const {
+ unsigned ByteOffset = DwordOffset * 4;
+ PointerType * PtrType = PointerType::get(VT.getTypeForEVT(*DAG.getContext()),
+ AMDGPUAS::CONSTANT_BUFFER_0);
+
+ // We shouldn't be using an offset wider than 16-bits for implicit parameters.
+ assert(isInt<16>(ByteOffset));
+
+ return DAG.getLoad(VT, DL, DAG.getEntryNode(),
+ DAG.getConstant(ByteOffset, DL, MVT::i32), // PTR
+ MachinePointerInfo(ConstantPointerNull::get(PtrType)),
+ false, false, false, 0);
+}
+
+bool R600TargetLowering::isZero(SDValue Op) const {
+ if(ConstantSDNode *Cst = dyn_cast<ConstantSDNode>(Op)) {
+ return Cst->isNullValue();
+ } else if(ConstantFPSDNode *CstFP = dyn_cast<ConstantFPSDNode>(Op)){
+ return CstFP->isZero();
+ } else {
+ return false;
+ }
+}
+
+SDValue R600TargetLowering::LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ EVT VT = Op.getValueType();
+
+ 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 Temp;
+
+ if (VT == MVT::f32) {
+ DAGCombinerInfo DCI(DAG, AfterLegalizeVectorOps, true, nullptr);
+ SDValue MinMax = CombineFMinMaxLegacy(DL, VT, LHS, RHS, True, False, CC, DCI);
+ if (MinMax)
+ return MinMax;
+ }
+
+ // LHS and RHS are guaranteed to be the same value type
+ EVT CompareVT = LHS.getValueType();
+
+ // Check if we can lower this to a native operation.
+
+ // Try to lower to a SET* instruction:
+ //
+ // SET* can match the following patterns:
+ //
+ // select_cc f32, f32, -1, 0, cc_supported
+ // select_cc f32, f32, 1.0f, 0.0f, cc_supported
+ // select_cc i32, i32, -1, 0, cc_supported
+ //
+
+ // Move hardware True/False values to the correct operand.
+ ISD::CondCode CCOpcode = cast<CondCodeSDNode>(CC)->get();
+ ISD::CondCode InverseCC =
+ ISD::getSetCCInverse(CCOpcode, CompareVT == MVT::i32);
+ if (isHWTrueValue(False) && isHWFalseValue(True)) {
+ if (isCondCodeLegal(InverseCC, CompareVT.getSimpleVT())) {
+ std::swap(False, True);
+ CC = DAG.getCondCode(InverseCC);
+ } else {
+ ISD::CondCode SwapInvCC = ISD::getSetCCSwappedOperands(InverseCC);
+ if (isCondCodeLegal(SwapInvCC, CompareVT.getSimpleVT())) {
+ std::swap(False, True);
+ std::swap(LHS, RHS);
+ CC = DAG.getCondCode(SwapInvCC);
+ }
}
+ }
+
+ if (isHWTrueValue(True) && isHWFalseValue(False) &&
+ (CompareVT == VT || VT == MVT::i32)) {
+ // This can be matched by a SET* instruction.
+ return DAG.getNode(ISD::SELECT_CC, DL, VT, LHS, RHS, True, False, CC);
+ }
+
+ // Try to lower to a CND* instruction:
+ //
+ // CND* can match the following patterns:
+ //
+ // select_cc f32, 0.0, f32, f32, cc_supported
+ // select_cc f32, 0.0, i32, i32, cc_supported
+ // select_cc i32, 0, f32, f32, cc_supported
+ // select_cc i32, 0, i32, i32, cc_supported
+ //
- case AMDGPU::LOAD_INPUT:
- {
- int64_t RegIndex = MI->getOperand(1).getImm();
- addLiveIn(MI, MF, MRI, TII,
- AMDGPU::R600_TReg32RegClass.getRegister(RegIndex));
+ // Try to move the zero value to the RHS
+ if (isZero(LHS)) {
+ ISD::CondCode CCOpcode = cast<CondCodeSDNode>(CC)->get();
+ // Try swapping the operands
+ ISD::CondCode CCSwapped = ISD::getSetCCSwappedOperands(CCOpcode);
+ if (isCondCodeLegal(CCSwapped, CompareVT.getSimpleVT())) {
+ std::swap(LHS, RHS);
+ CC = DAG.getCondCode(CCSwapped);
+ } else {
+ // Try inverting the conditon and then swapping the operands
+ ISD::CondCode CCInv = ISD::getSetCCInverse(CCOpcode, CompareVT.isInteger());
+ CCSwapped = ISD::getSetCCSwappedOperands(CCInv);
+ if (isCondCodeLegal(CCSwapped, CompareVT.getSimpleVT())) {
+ std::swap(True, False);
+ std::swap(LHS, RHS);
+ CC = DAG.getCondCode(CCSwapped);
+ }
+ }
+ }
+ if (isZero(RHS)) {
+ SDValue Cond = LHS;
+ SDValue Zero = RHS;
+ ISD::CondCode CCOpcode = cast<CondCodeSDNode>(CC)->get();
+ if (CompareVT != VT) {
+ // Bitcast True / False to the correct types. This will end up being
+ // a nop, but it allows us to define only a single pattern in the
+ // .TD files for each CND* instruction rather than having to have
+ // one pattern for integer True/False and one for fp True/False
+ True = DAG.getNode(ISD::BITCAST, DL, CompareVT, True);
+ False = DAG.getNode(ISD::BITCAST, DL, CompareVT, False);
+ }
+
+ switch (CCOpcode) {
+ case ISD::SETONE:
+ case ISD::SETUNE:
+ case ISD::SETNE:
+ CCOpcode = ISD::getSetCCInverse(CCOpcode, CompareVT == MVT::i32);
+ Temp = True;
+ True = False;
+ False = Temp;
+ break;
+ default:
break;
}
+ SDValue SelectNode = DAG.getNode(ISD::SELECT_CC, DL, CompareVT,
+ Cond, Zero,
+ True, False,
+ DAG.getCondCode(CCOpcode));
+ return DAG.getNode(ISD::BITCAST, DL, VT, SelectNode);
+ }
- case AMDGPU::MASK_WRITE:
- {
- unsigned maskedRegister = MI->getOperand(0).getReg();
- assert(TargetRegisterInfo::isVirtualRegister(maskedRegister));
- MachineInstr * defInstr = MRI.getVRegDef(maskedRegister);
- MachineOperand * def = defInstr->findRegisterDefOperand(maskedRegister);
- def->addTargetFlag(MO_FLAG_MASK);
- // Return early so the instruction is not erased
- return BB;
+ // If we make it this for it means we have no native instructions to handle
+ // this SELECT_CC, so we must lower it.
+ SDValue HWTrue, HWFalse;
+
+ if (CompareVT == MVT::f32) {
+ HWTrue = DAG.getConstantFP(1.0f, DL, CompareVT);
+ HWFalse = DAG.getConstantFP(0.0f, DL, CompareVT);
+ } else if (CompareVT == MVT::i32) {
+ HWTrue = DAG.getConstant(-1, DL, CompareVT);
+ HWFalse = DAG.getConstant(0, DL, CompareVT);
+ }
+ else {
+ llvm_unreachable("Unhandled value type in LowerSELECT_CC");
+ }
+
+ // Lower this unsupported SELECT_CC into a combination of two supported
+ // SELECT_CC operations.
+ SDValue Cond = DAG.getNode(ISD::SELECT_CC, DL, CompareVT, LHS, RHS, HWTrue, HWFalse, CC);
+
+ return DAG.getNode(ISD::SELECT_CC, DL, VT,
+ Cond, HWFalse,
+ True, False,
+ DAG.getCondCode(ISD::SETNE));
+}
+
+/// LLVM generates byte-addressed pointers. For indirect addressing, we need to
+/// convert these pointers to a register index. Each register holds
+/// 16 bytes, (4 x 32bit sub-register), but we need to take into account the
+/// \p StackWidth, which tells us how many of the 4 sub-registrers will be used
+/// for indirect addressing.
+SDValue R600TargetLowering::stackPtrToRegIndex(SDValue Ptr,
+ unsigned StackWidth,
+ SelectionDAG &DAG) const {
+ unsigned SRLPad;
+ switch(StackWidth) {
+ case 1:
+ SRLPad = 2;
+ break;
+ case 2:
+ SRLPad = 3;
+ break;
+ case 4:
+ SRLPad = 4;
+ break;
+ default: llvm_unreachable("Invalid stack width");
+ }
+
+ SDLoc DL(Ptr);
+ return DAG.getNode(ISD::SRL, DL, Ptr.getValueType(), Ptr,
+ DAG.getConstant(SRLPad, DL, MVT::i32));
+}
+
+void R600TargetLowering::getStackAddress(unsigned StackWidth,
+ unsigned ElemIdx,
+ unsigned &Channel,
+ unsigned &PtrIncr) const {
+ switch (StackWidth) {
+ default:
+ case 1:
+ Channel = 0;
+ if (ElemIdx > 0) {
+ PtrIncr = 1;
+ } else {
+ PtrIncr = 0;
+ }
+ break;
+ case 2:
+ Channel = ElemIdx % 2;
+ if (ElemIdx == 2) {
+ PtrIncr = 1;
+ } else {
+ PtrIncr = 0;
+ }
+ break;
+ case 4:
+ Channel = ElemIdx;
+ PtrIncr = 0;
+ break;
+ }
+}
+
+SDValue R600TargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {
+ SDLoc DL(Op);
+ StoreSDNode *StoreNode = cast<StoreSDNode>(Op);
+ SDValue Chain = Op.getOperand(0);
+ SDValue Value = Op.getOperand(1);
+ SDValue Ptr = Op.getOperand(2);
+
+ SDValue Result = AMDGPUTargetLowering::LowerSTORE(Op, DAG);
+ if (Result.getNode()) {
+ return Result;
+ }
+
+ if (StoreNode->getAddressSpace() == AMDGPUAS::GLOBAL_ADDRESS) {
+ if (StoreNode->isTruncatingStore()) {
+ EVT VT = Value.getValueType();
+ assert(VT.bitsLE(MVT::i32));
+ EVT MemVT = StoreNode->getMemoryVT();
+ SDValue MaskConstant;
+ if (MemVT == MVT::i8) {
+ MaskConstant = DAG.getConstant(0xFF, DL, MVT::i32);
+ } else {
+ assert(MemVT == MVT::i16);
+ MaskConstant = DAG.getConstant(0xFFFF, DL, MVT::i32);
+ }
+ SDValue DWordAddr = DAG.getNode(ISD::SRL, DL, VT, Ptr,
+ DAG.getConstant(2, DL, MVT::i32));
+ SDValue ByteIndex = DAG.getNode(ISD::AND, DL, Ptr.getValueType(), Ptr,
+ DAG.getConstant(0x00000003, DL, VT));
+ SDValue TruncValue = DAG.getNode(ISD::AND, DL, VT, Value, MaskConstant);
+ SDValue Shift = DAG.getNode(ISD::SHL, DL, VT, ByteIndex,
+ DAG.getConstant(3, DL, VT));
+ SDValue ShiftedValue = DAG.getNode(ISD::SHL, DL, VT, TruncValue, Shift);
+ SDValue Mask = DAG.getNode(ISD::SHL, DL, VT, MaskConstant, Shift);
+ // XXX: If we add a 64-bit ZW register class, then we could use a 2 x i32
+ // vector instead.
+ SDValue Src[4] = {
+ ShiftedValue,
+ DAG.getConstant(0, DL, MVT::i32),
+ DAG.getConstant(0, DL, MVT::i32),
+ Mask
+ };
+ SDValue Input = DAG.getNode(ISD::BUILD_VECTOR, DL, MVT::v4i32, Src);
+ SDValue Args[3] = { Chain, Input, DWordAddr };
+ return DAG.getMemIntrinsicNode(AMDGPUISD::STORE_MSKOR, DL,
+ Op->getVTList(), Args, MemVT,
+ StoreNode->getMemOperand());
+ } else if (Ptr->getOpcode() != AMDGPUISD::DWORDADDR &&
+ Value.getValueType().bitsGE(MVT::i32)) {
+ // Convert pointer from byte address to dword address.
+ Ptr = DAG.getNode(AMDGPUISD::DWORDADDR, DL, Ptr.getValueType(),
+ DAG.getNode(ISD::SRL, DL, Ptr.getValueType(),
+ Ptr, DAG.getConstant(2, DL, MVT::i32)));
+
+ if (StoreNode->isTruncatingStore() || StoreNode->isIndexed()) {
+ llvm_unreachable("Truncated and indexed stores not supported yet");
+ } else {
+ Chain = DAG.getStore(Chain, DL, Value, Ptr, StoreNode->getMemOperand());
+ }
+ return Chain;
}
+ }
- case AMDGPU::RAT_WRITE_CACHELESS_eg:
- {
- // Convert to DWORD address
- unsigned NewAddr = MRI.createVirtualRegister(
- &AMDGPU::R600_TReg32_XRegClass);
- unsigned ShiftValue = MRI.createVirtualRegister(
- &AMDGPU::R600_TReg32RegClass);
-
- // XXX In theory, we should be able to pass ShiftValue directly to
- // the LSHR_eg instruction as an inline literal, but I tried doing it
- // this way and it didn't produce the correct results.
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::MOV), ShiftValue)
- .addReg(AMDGPU::ALU_LITERAL_X)
- .addImm(2);
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::LSHR_eg), NewAddr)
- .addOperand(MI->getOperand(1))
- .addReg(ShiftValue);
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(MI->getOpcode()))
- .addOperand(MI->getOperand(0))
- .addReg(NewAddr);
- break;
+ EVT ValueVT = Value.getValueType();
+
+ if (StoreNode->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS) {
+ return SDValue();
+ }
+
+ SDValue Ret = AMDGPUTargetLowering::LowerSTORE(Op, DAG);
+ if (Ret.getNode()) {
+ return Ret;
+ }
+ // Lowering for indirect addressing
+
+ const MachineFunction &MF = DAG.getMachineFunction();
+ const AMDGPUFrameLowering *TFL =
+ static_cast<const AMDGPUFrameLowering *>(Subtarget->getFrameLowering());
+ unsigned StackWidth = TFL->getStackWidth(MF);
+
+ Ptr = stackPtrToRegIndex(Ptr, StackWidth, DAG);
+
+ if (ValueVT.isVector()) {
+ unsigned NumElemVT = ValueVT.getVectorNumElements();
+ EVT ElemVT = ValueVT.getVectorElementType();
+ SmallVector<SDValue, 4> Stores(NumElemVT);
+
+ assert(NumElemVT >= StackWidth && "Stack width cannot be greater than "
+ "vector width in load");
+
+ for (unsigned i = 0; i < NumElemVT; ++i) {
+ unsigned Channel, PtrIncr;
+ getStackAddress(StackWidth, i, Channel, PtrIncr);
+ Ptr = DAG.getNode(ISD::ADD, DL, MVT::i32, Ptr,
+ DAG.getConstant(PtrIncr, DL, MVT::i32));
+ SDValue Elem = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ElemVT,
+ Value, DAG.getConstant(i, DL, MVT::i32));
+
+ Stores[i] = DAG.getNode(AMDGPUISD::REGISTER_STORE, DL, MVT::Other,
+ Chain, Elem, Ptr,
+ DAG.getTargetConstant(Channel, DL, MVT::i32));
}
+ Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Stores);
+ } else {
+ if (ValueVT == MVT::i8) {
+ Value = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i32, Value);
+ }
+ Chain = DAG.getNode(AMDGPUISD::REGISTER_STORE, DL, MVT::Other, Chain, Value, Ptr,
+ DAG.getTargetConstant(0, DL, MVT::i32)); // Channel
+ }
+
+ return Chain;
+}
+
+// return (512 + (kc_bank << 12)
+static int
+ConstantAddressBlock(unsigned AddressSpace) {
+ switch (AddressSpace) {
+ case AMDGPUAS::CONSTANT_BUFFER_0:
+ return 512;
+ case AMDGPUAS::CONSTANT_BUFFER_1:
+ return 512 + 4096;
+ case AMDGPUAS::CONSTANT_BUFFER_2:
+ return 512 + 4096 * 2;
+ case AMDGPUAS::CONSTANT_BUFFER_3:
+ return 512 + 4096 * 3;
+ case AMDGPUAS::CONSTANT_BUFFER_4:
+ return 512 + 4096 * 4;
+ case AMDGPUAS::CONSTANT_BUFFER_5:
+ return 512 + 4096 * 5;
+ case AMDGPUAS::CONSTANT_BUFFER_6:
+ return 512 + 4096 * 6;
+ case AMDGPUAS::CONSTANT_BUFFER_7:
+ return 512 + 4096 * 7;
+ case AMDGPUAS::CONSTANT_BUFFER_8:
+ return 512 + 4096 * 8;
+ case AMDGPUAS::CONSTANT_BUFFER_9:
+ return 512 + 4096 * 9;
+ case AMDGPUAS::CONSTANT_BUFFER_10:
+ return 512 + 4096 * 10;
+ case AMDGPUAS::CONSTANT_BUFFER_11:
+ return 512 + 4096 * 11;
+ case AMDGPUAS::CONSTANT_BUFFER_12:
+ return 512 + 4096 * 12;
+ case AMDGPUAS::CONSTANT_BUFFER_13:
+ return 512 + 4096 * 13;
+ case AMDGPUAS::CONSTANT_BUFFER_14:
+ return 512 + 4096 * 14;
+ case AMDGPUAS::CONSTANT_BUFFER_15:
+ return 512 + 4096 * 15;
+ default:
+ return -1;
+ }
+}
+
+SDValue R600TargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const
+{
+ EVT VT = Op.getValueType();
+ SDLoc DL(Op);
+ LoadSDNode *LoadNode = cast<LoadSDNode>(Op);
+ SDValue Chain = Op.getOperand(0);
+ SDValue Ptr = Op.getOperand(1);
+ SDValue LoweredLoad;
- case AMDGPU::STORE_OUTPUT:
- {
- int64_t OutputIndex = MI->getOperand(1).getImm();
- unsigned OutputReg = AMDGPU::R600_TReg32RegClass.getRegister(OutputIndex);
+ if (SDValue Ret = AMDGPUTargetLowering::LowerLOAD(Op, DAG))
+ return Ret;
+
+ // Lower loads constant address space global variable loads
+ if (LoadNode->getAddressSpace() == AMDGPUAS::CONSTANT_ADDRESS &&
+ isa<GlobalVariable>(GetUnderlyingObject(
+ LoadNode->getMemOperand()->getValue(), DAG.getDataLayout()))) {
+
+ SDValue Ptr = DAG.getZExtOrTrunc(
+ LoadNode->getBasePtr(), DL,
+ getPointerTy(DAG.getDataLayout(), AMDGPUAS::PRIVATE_ADDRESS));
+ Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, Ptr,
+ DAG.getConstant(2, DL, MVT::i32));
+ return DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, Op->getVTList(),
+ LoadNode->getChain(), Ptr,
+ DAG.getTargetConstant(0, DL, MVT::i32),
+ Op.getOperand(2));
+ }
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::COPY), OutputReg)
- .addOperand(MI->getOperand(0));
+ if (LoadNode->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS && VT.isVector()) {
+ SDValue MergedValues[2] = {
+ ScalarizeVectorLoad(Op, DAG),
+ Chain
+ };
+ return DAG.getMergeValues(MergedValues, DL);
+ }
- if (!MRI.isLiveOut(OutputReg)) {
- MRI.addLiveOut(OutputReg);
+ int ConstantBlock = ConstantAddressBlock(LoadNode->getAddressSpace());
+ if (ConstantBlock > -1 &&
+ ((LoadNode->getExtensionType() == ISD::NON_EXTLOAD) ||
+ (LoadNode->getExtensionType() == ISD::ZEXTLOAD))) {
+ SDValue Result;
+ if (isa<ConstantExpr>(LoadNode->getMemOperand()->getValue()) ||
+ isa<Constant>(LoadNode->getMemOperand()->getValue()) ||
+ isa<ConstantSDNode>(Ptr)) {
+ SDValue Slots[4];
+ for (unsigned i = 0; i < 4; i++) {
+ // We want Const position encoded with the following formula :
+ // (((512 + (kc_bank << 12) + const_index) << 2) + chan)
+ // const_index is Ptr computed by llvm using an alignment of 16.
+ // Thus we add (((512 + (kc_bank << 12)) + chan ) * 4 here and
+ // then div by 4 at the ISel step
+ SDValue NewPtr = DAG.getNode(ISD::ADD, DL, Ptr.getValueType(), Ptr,
+ DAG.getConstant(4 * i + ConstantBlock * 16, DL, MVT::i32));
+ Slots[i] = DAG.getNode(AMDGPUISD::CONST_ADDRESS, DL, MVT::i32, NewPtr);
}
- break;
+ EVT NewVT = MVT::v4i32;
+ unsigned NumElements = 4;
+ if (VT.isVector()) {
+ NewVT = VT;
+ NumElements = VT.getVectorNumElements();
+ }
+ Result = DAG.getNode(ISD::BUILD_VECTOR, DL, NewVT,
+ makeArrayRef(Slots, NumElements));
+ } else {
+ // non-constant ptr can't be folded, keeps it as a v4f32 load
+ Result = DAG.getNode(AMDGPUISD::CONST_ADDRESS, DL, MVT::v4i32,
+ DAG.getNode(ISD::SRL, DL, MVT::i32, Ptr,
+ DAG.getConstant(4, DL, MVT::i32)),
+ DAG.getConstant(LoadNode->getAddressSpace() -
+ AMDGPUAS::CONSTANT_BUFFER_0, DL, MVT::i32)
+ );
}
- case AMDGPU::RESERVE_REG:
- {
- R600MachineFunctionInfo * MFI = MF->getInfo<R600MachineFunctionInfo>();
- int64_t ReservedIndex = MI->getOperand(0).getImm();
- unsigned ReservedReg =
- AMDGPU::R600_TReg32RegClass.getRegister(ReservedIndex);
- MFI->ReservedRegs.push_back(ReservedReg);
- break;
+ if (!VT.isVector()) {
+ Result = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::i32, Result,
+ DAG.getConstant(0, DL, MVT::i32));
}
- case AMDGPU::TXD:
- {
- unsigned t0 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
- unsigned t1 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
-
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_H), t0)
- .addOperand(MI->getOperand(3))
- .addOperand(MI->getOperand(4))
- .addOperand(MI->getOperand(5));
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_V), t1)
- .addOperand(MI->getOperand(2))
- .addOperand(MI->getOperand(4))
- .addOperand(MI->getOperand(5));
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SAMPLE_G))
- .addOperand(MI->getOperand(0))
- .addOperand(MI->getOperand(1))
- .addOperand(MI->getOperand(4))
- .addOperand(MI->getOperand(5))
- .addReg(t0, RegState::Implicit)
- .addReg(t1, RegState::Implicit);
- break;
+ SDValue MergedValues[2] = {
+ Result,
+ Chain
+ };
+ return DAG.getMergeValues(MergedValues, DL);
+ }
+
+ // For most operations returning SDValue() will result in the node being
+ // expanded by the DAG Legalizer. This is not the case for ISD::LOAD, so we
+ // need to manually expand loads that may be legal in some address spaces and
+ // illegal in others. SEXT loads from CONSTANT_BUFFER_0 are supported for
+ // compute shaders, since the data is sign extended when it is uploaded to the
+ // buffer. However SEXT loads from other address spaces are not supported, so
+ // we need to expand them here.
+ if (LoadNode->getExtensionType() == ISD::SEXTLOAD) {
+ EVT MemVT = LoadNode->getMemoryVT();
+ assert(!MemVT.isVector() && (MemVT == MVT::i16 || MemVT == MVT::i8));
+ SDValue NewLoad = DAG.getExtLoad(ISD::EXTLOAD, DL, VT, Chain, Ptr,
+ LoadNode->getPointerInfo(), MemVT,
+ LoadNode->isVolatile(),
+ LoadNode->isNonTemporal(),
+ LoadNode->isInvariant(),
+ LoadNode->getAlignment());
+ SDValue Res = DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, VT, NewLoad,
+ DAG.getValueType(MemVT));
+
+ SDValue MergedValues[2] = { Res, Chain };
+ return DAG.getMergeValues(MergedValues, DL);
+ }
+
+ if (LoadNode->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS) {
+ return SDValue();
+ }
+
+ // Lowering for indirect addressing
+ const MachineFunction &MF = DAG.getMachineFunction();
+ const AMDGPUFrameLowering *TFL =
+ static_cast<const AMDGPUFrameLowering *>(Subtarget->getFrameLowering());
+ unsigned StackWidth = TFL->getStackWidth(MF);
+
+ Ptr = stackPtrToRegIndex(Ptr, StackWidth, DAG);
+
+ if (VT.isVector()) {
+ unsigned NumElemVT = VT.getVectorNumElements();
+ EVT ElemVT = VT.getVectorElementType();
+ SDValue Loads[4];
+
+ assert(NumElemVT >= StackWidth && "Stack width cannot be greater than "
+ "vector width in load");
+
+ for (unsigned i = 0; i < NumElemVT; ++i) {
+ unsigned Channel, PtrIncr;
+ getStackAddress(StackWidth, i, Channel, PtrIncr);
+ Ptr = DAG.getNode(ISD::ADD, DL, MVT::i32, Ptr,
+ DAG.getConstant(PtrIncr, DL, MVT::i32));
+ Loads[i] = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, ElemVT,
+ Chain, Ptr,
+ DAG.getTargetConstant(Channel, DL, MVT::i32),
+ Op.getOperand(2));
}
- case AMDGPU::TXD_SHADOW:
- {
- unsigned t0 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
- unsigned t1 = MRI.createVirtualRegister(&AMDGPU::R600_Reg128RegClass);
-
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_H), t0)
- .addOperand(MI->getOperand(3))
- .addOperand(MI->getOperand(4))
- .addOperand(MI->getOperand(5));
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SET_GRADIENTS_V), t1)
- .addOperand(MI->getOperand(2))
- .addOperand(MI->getOperand(4))
- .addOperand(MI->getOperand(5));
- BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::TEX_SAMPLE_C_G))
- .addOperand(MI->getOperand(0))
- .addOperand(MI->getOperand(1))
- .addOperand(MI->getOperand(4))
- .addOperand(MI->getOperand(5))
- .addReg(t0, RegState::Implicit)
- .addReg(t1, RegState::Implicit);
- break;
+ for (unsigned i = NumElemVT; i < 4; ++i) {
+ Loads[i] = DAG.getUNDEF(ElemVT);
+ }
+ EVT TargetVT = EVT::getVectorVT(*DAG.getContext(), ElemVT, 4);
+ LoweredLoad = DAG.getNode(ISD::BUILD_VECTOR, DL, TargetVT, Loads);
+ } else {
+ LoweredLoad = DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, VT,
+ Chain, Ptr,
+ DAG.getTargetConstant(0, DL, MVT::i32), // Channel
+ Op.getOperand(2));
+ }
+
+ SDValue Ops[2] = {
+ LoweredLoad,
+ Chain
+ };
+
+ return DAG.getMergeValues(Ops, DL);
+}
+
+SDValue R600TargetLowering::LowerBRCOND(SDValue Op, SelectionDAG &DAG) const {
+ SDValue Chain = Op.getOperand(0);
+ SDValue Cond = Op.getOperand(1);
+ SDValue Jump = Op.getOperand(2);
+
+ return DAG.getNode(AMDGPUISD::BRANCH_COND, SDLoc(Op), Op.getValueType(),
+ Chain, Jump, Cond);
+}
+
+/// XXX Only kernel functions are supported, so we can assume for now that
+/// every function is a kernel function, but in the future we should use
+/// separate calling conventions for kernel and non-kernel functions.
+SDValue R600TargetLowering::LowerFormalArguments(
+ SDValue Chain,
+ CallingConv::ID CallConv,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ SDLoc DL, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const {
+ SmallVector<CCValAssign, 16> ArgLocs;
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), ArgLocs,
+ *DAG.getContext());
+ MachineFunction &MF = DAG.getMachineFunction();
+ R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>();
+
+ SmallVector<ISD::InputArg, 8> LocalIns;
+
+ getOriginalFunctionArgs(DAG, MF.getFunction(), Ins, LocalIns);
+
+ AnalyzeFormalArguments(CCInfo, LocalIns);
+
+ for (unsigned i = 0, e = Ins.size(); i < e; ++i) {
+ CCValAssign &VA = ArgLocs[i];
+ const ISD::InputArg &In = Ins[i];
+ EVT VT = In.VT;
+ EVT MemVT = VA.getLocVT();
+ if (!VT.isVector() && MemVT.isVector()) {
+ // Get load source type if scalarized.
+ MemVT = MemVT.getVectorElementType();
+ }
+
+ if (MFI->getShaderType() != ShaderType::COMPUTE) {
+ unsigned Reg = MF.addLiveIn(VA.getLocReg(), &AMDGPU::R600_Reg128RegClass);
+ SDValue Register = DAG.getCopyFromReg(Chain, DL, Reg, VT);
+ InVals.push_back(Register);
+ continue;
}
+ PointerType *PtrTy = PointerType::get(VT.getTypeForEVT(*DAG.getContext()),
+ AMDGPUAS::CONSTANT_BUFFER_0);
+ // i64 isn't a legal type, so the register type used ends up as i32, which
+ // isn't expected here. It attempts to create this sextload, but it ends up
+ // being invalid. Somehow this seems to work with i64 arguments, but breaks
+ // for <1 x i64>.
+
+ // The first 36 bytes of the input buffer contains information about
+ // thread group and global sizes.
+ ISD::LoadExtType Ext = ISD::NON_EXTLOAD;
+ if (MemVT.getScalarSizeInBits() != VT.getScalarSizeInBits()) {
+ // FIXME: This should really check the extload type, but the handling of
+ // extload vector parameters seems to be broken.
+
+ // Ext = In.Flags.isSExt() ? ISD::SEXTLOAD : ISD::ZEXTLOAD;
+ Ext = ISD::SEXTLOAD;
+ }
+
+ // Compute the offset from the value.
+ // XXX - I think PartOffset should give you this, but it seems to give the
+ // size of the register which isn't useful.
+
+ unsigned ValBase = ArgLocs[In.getOrigArgIndex()].getLocMemOffset();
+ unsigned PartOffset = VA.getLocMemOffset();
+ unsigned Offset = 36 + VA.getLocMemOffset();
+
+ MachinePointerInfo PtrInfo(UndefValue::get(PtrTy), PartOffset - ValBase);
+ SDValue Arg = DAG.getLoad(ISD::UNINDEXED, Ext, VT, DL, Chain,
+ DAG.getConstant(Offset, DL, MVT::i32),
+ DAG.getUNDEF(MVT::i32),
+ PtrInfo,
+ MemVT, false, true, true, 4);
+
+ // 4 is the preferred alignment for the CONSTANT memory space.
+ InVals.push_back(Arg);
+ MFI->ABIArgOffset = Offset + MemVT.getStoreSize();
}
+ return Chain;
+}
- MI->eraseFromParent();
- return BB;
+EVT R600TargetLowering::getSetCCResultType(const DataLayout &DL, LLVMContext &,
+ EVT VT) const {
+ if (!VT.isVector())
+ return MVT::i32;
+ return VT.changeVectorElementTypeToInteger();
}
-void R600TargetLowering::lowerImplicitParameter(MachineInstr *MI, MachineBasicBlock &BB,
- MachineRegisterInfo & MRI, unsigned dword_offset) const
-{
- MachineBasicBlock::iterator I = *MI;
- unsigned PtrReg = MRI.createVirtualRegister(&AMDGPU::R600_TReg32_XRegClass);
- MRI.setRegClass(MI->getOperand(0).getReg(), &AMDGPU::R600_TReg32_XRegClass);
+static SDValue CompactSwizzlableVector(
+ SelectionDAG &DAG, SDValue VectorEntry,
+ DenseMap<unsigned, unsigned> &RemapSwizzle) {
+ assert(VectorEntry.getOpcode() == ISD::BUILD_VECTOR);
+ assert(RemapSwizzle.empty());
+ SDValue NewBldVec[4] = {
+ VectorEntry.getOperand(0),
+ VectorEntry.getOperand(1),
+ VectorEntry.getOperand(2),
+ VectorEntry.getOperand(3)
+ };
- BuildMI(BB, I, BB.findDebugLoc(I), TII->get(AMDGPU::MOV), PtrReg)
- .addReg(AMDGPU::ALU_LITERAL_X)
- .addImm(dword_offset * 4);
+ for (unsigned i = 0; i < 4; i++) {
+ if (NewBldVec[i].getOpcode() == ISD::UNDEF)
+ // We mask write here to teach later passes that the ith element of this
+ // vector is undef. Thus we can use it to reduce 128 bits reg usage,
+ // break false dependencies and additionnaly make assembly easier to read.
+ RemapSwizzle[i] = 7; // SEL_MASK_WRITE
+ if (ConstantFPSDNode *C = dyn_cast<ConstantFPSDNode>(NewBldVec[i])) {
+ if (C->isZero()) {
+ RemapSwizzle[i] = 4; // SEL_0
+ NewBldVec[i] = DAG.getUNDEF(MVT::f32);
+ } else if (C->isExactlyValue(1.0)) {
+ RemapSwizzle[i] = 5; // SEL_1
+ NewBldVec[i] = DAG.getUNDEF(MVT::f32);
+ }
+ }
+
+ if (NewBldVec[i].getOpcode() == ISD::UNDEF)
+ continue;
+ for (unsigned j = 0; j < i; j++) {
+ if (NewBldVec[i] == NewBldVec[j]) {
+ NewBldVec[i] = DAG.getUNDEF(NewBldVec[i].getValueType());
+ RemapSwizzle[i] = j;
+ break;
+ }
+ }
+ }
+
+ return DAG.getNode(ISD::BUILD_VECTOR, SDLoc(VectorEntry),
+ VectorEntry.getValueType(), NewBldVec);
+}
+
+static SDValue ReorganizeVector(SelectionDAG &DAG, SDValue VectorEntry,
+ DenseMap<unsigned, unsigned> &RemapSwizzle) {
+ assert(VectorEntry.getOpcode() == ISD::BUILD_VECTOR);
+ assert(RemapSwizzle.empty());
+ SDValue NewBldVec[4] = {
+ VectorEntry.getOperand(0),
+ VectorEntry.getOperand(1),
+ VectorEntry.getOperand(2),
+ VectorEntry.getOperand(3)
+ };
+ bool isUnmovable[4] = { false, false, false, false };
+ for (unsigned i = 0; i < 4; i++) {
+ RemapSwizzle[i] = i;
+ if (NewBldVec[i].getOpcode() == ISD::EXTRACT_VECTOR_ELT) {
+ unsigned Idx = dyn_cast<ConstantSDNode>(NewBldVec[i].getOperand(1))
+ ->getZExtValue();
+ if (i == Idx)
+ isUnmovable[Idx] = true;
+ }
+ }
+
+ for (unsigned i = 0; i < 4; i++) {
+ if (NewBldVec[i].getOpcode() == ISD::EXTRACT_VECTOR_ELT) {
+ unsigned Idx = dyn_cast<ConstantSDNode>(NewBldVec[i].getOperand(1))
+ ->getZExtValue();
+ if (isUnmovable[Idx])
+ continue;
+ // Swap i and Idx
+ std::swap(NewBldVec[Idx], NewBldVec[i]);
+ std::swap(RemapSwizzle[i], RemapSwizzle[Idx]);
+ break;
+ }
+ }
- BuildMI(BB, I, BB.findDebugLoc(I), TII->get(AMDGPU::VTX_READ_PARAM_i32_eg))
- .addOperand(MI->getOperand(0))
- .addReg(PtrReg)
- .addImm(0);
+ return DAG.getNode(ISD::BUILD_VECTOR, SDLoc(VectorEntry),
+ VectorEntry.getValueType(), NewBldVec);
}
+
+SDValue R600TargetLowering::OptimizeSwizzle(SDValue BuildVector,
+ SDValue Swz[4], SelectionDAG &DAG,
+ SDLoc DL) const {
+ assert(BuildVector.getOpcode() == ISD::BUILD_VECTOR);
+ // Old -> New swizzle values
+ DenseMap<unsigned, unsigned> SwizzleRemap;
+
+ BuildVector = CompactSwizzlableVector(DAG, BuildVector, SwizzleRemap);
+ for (unsigned i = 0; i < 4; i++) {
+ unsigned Idx = cast<ConstantSDNode>(Swz[i])->getZExtValue();
+ if (SwizzleRemap.find(Idx) != SwizzleRemap.end())
+ Swz[i] = DAG.getConstant(SwizzleRemap[Idx], DL, MVT::i32);
+ }
+
+ SwizzleRemap.clear();
+ BuildVector = ReorganizeVector(DAG, BuildVector, SwizzleRemap);
+ for (unsigned i = 0; i < 4; i++) {
+ unsigned Idx = cast<ConstantSDNode>(Swz[i])->getZExtValue();
+ if (SwizzleRemap.find(Idx) != SwizzleRemap.end())
+ Swz[i] = DAG.getConstant(SwizzleRemap[Idx], DL, MVT::i32);
+ }
+
+ return BuildVector;
+}
+
+
//===----------------------------------------------------------------------===//
-// Custom DAG Lowering Operations
+// Custom DAG Optimizations
//===----------------------------------------------------------------------===//
+SDValue R600TargetLowering::PerformDAGCombine(SDNode *N,
+ DAGCombinerInfo &DCI) const {
+ SelectionDAG &DAG = DCI.DAG;
-SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const
-{
- switch (Op.getOpcode()) {
- default: return AMDGPUTargetLowering::LowerOperation(Op, DAG);
- case ISD::ROTL: return LowerROTL(Op, DAG);
+ switch (N->getOpcode()) {
+ default: return AMDGPUTargetLowering::PerformDAGCombine(N, DCI);
+ // (f32 fp_round (f64 uint_to_fp a)) -> (f32 uint_to_fp a)
+ case ISD::FP_ROUND: {
+ SDValue Arg = N->getOperand(0);
+ if (Arg.getOpcode() == ISD::UINT_TO_FP && Arg.getValueType() == MVT::f64) {
+ return DAG.getNode(ISD::UINT_TO_FP, SDLoc(N), N->getValueType(0),
+ Arg.getOperand(0));
+ }
+ break;
+ }
+
+ // (i32 fp_to_sint (fneg (select_cc f32, f32, 1.0, 0.0 cc))) ->
+ // (i32 select_cc f32, f32, -1, 0 cc)
+ //
+ // Mesa's GLSL frontend generates the above pattern a lot and we can lower
+ // this to one of the SET*_DX10 instructions.
+ case ISD::FP_TO_SINT: {
+ SDValue FNeg = N->getOperand(0);
+ if (FNeg.getOpcode() != ISD::FNEG) {
+ return SDValue();
+ }
+ SDValue SelectCC = FNeg.getOperand(0);
+ if (SelectCC.getOpcode() != ISD::SELECT_CC ||
+ SelectCC.getOperand(0).getValueType() != MVT::f32 || // LHS
+ SelectCC.getOperand(2).getValueType() != MVT::f32 || // True
+ !isHWTrueValue(SelectCC.getOperand(2)) ||
+ !isHWFalseValue(SelectCC.getOperand(3))) {
+ return SDValue();
+ }
+
+ SDLoc dl(N);
+ return DAG.getNode(ISD::SELECT_CC, dl, N->getValueType(0),
+ SelectCC.getOperand(0), // LHS
+ SelectCC.getOperand(1), // RHS
+ DAG.getConstant(-1, dl, MVT::i32), // True
+ DAG.getConstant(0, dl, MVT::i32), // False
+ SelectCC.getOperand(4)); // CC
+
+ break;
+ }
+
+ // insert_vector_elt (build_vector elt0, ... , eltN), NewEltIdx, idx
+ // => build_vector elt0, ... , NewEltIdx, ... , eltN
+ case ISD::INSERT_VECTOR_ELT: {
+ SDValue InVec = N->getOperand(0);
+ SDValue InVal = N->getOperand(1);
+ SDValue EltNo = N->getOperand(2);
+ SDLoc dl(N);
+
+ // If the inserted element is an UNDEF, just use the input vector.
+ if (InVal.getOpcode() == ISD::UNDEF)
+ return InVec;
+
+ EVT VT = InVec.getValueType();
+
+ // If we can't generate a legal BUILD_VECTOR, exit
+ if (!isOperationLegal(ISD::BUILD_VECTOR, VT))
+ return SDValue();
+
+ // Check that we know which element is being inserted
+ if (!isa<ConstantSDNode>(EltNo))
+ return SDValue();
+ unsigned Elt = cast<ConstantSDNode>(EltNo)->getZExtValue();
+
+ // Check that the operand is a BUILD_VECTOR (or UNDEF, which can essentially
+ // be converted to a BUILD_VECTOR). Fill in the Ops vector with the
+ // vector elements.
+ SmallVector<SDValue, 8> Ops;
+ if (InVec.getOpcode() == ISD::BUILD_VECTOR) {
+ Ops.append(InVec.getNode()->op_begin(),
+ InVec.getNode()->op_end());
+ } else if (InVec.getOpcode() == ISD::UNDEF) {
+ unsigned NElts = VT.getVectorNumElements();
+ Ops.append(NElts, DAG.getUNDEF(InVal.getValueType()));
+ } else {
+ return SDValue();
+ }
+
+ // Insert the element
+ if (Elt < Ops.size()) {
+ // All the operands of BUILD_VECTOR must have the same type;
+ // we enforce that here.
+ EVT OpVT = Ops[0].getValueType();
+ if (InVal.getValueType() != OpVT)
+ InVal = OpVT.bitsGT(InVal.getValueType()) ?
+ DAG.getNode(ISD::ANY_EXTEND, dl, OpVT, InVal) :
+ DAG.getNode(ISD::TRUNCATE, dl, OpVT, InVal);
+ Ops[Elt] = InVal;
+ }
+
+ // Return the new vector
+ return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, Ops);
+ }
+
+ // Extract_vec (Build_vector) generated by custom lowering
+ // also needs to be customly combined
+ case ISD::EXTRACT_VECTOR_ELT: {
+ SDValue Arg = N->getOperand(0);
+ if (Arg.getOpcode() == ISD::BUILD_VECTOR) {
+ if (ConstantSDNode *Const = dyn_cast<ConstantSDNode>(N->getOperand(1))) {
+ unsigned Element = Const->getZExtValue();
+ return Arg->getOperand(Element);
+ }
+ }
+ if (Arg.getOpcode() == ISD::BITCAST &&
+ Arg.getOperand(0).getOpcode() == ISD::BUILD_VECTOR) {
+ if (ConstantSDNode *Const = dyn_cast<ConstantSDNode>(N->getOperand(1))) {
+ unsigned Element = Const->getZExtValue();
+ return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getVTList(),
+ Arg->getOperand(0).getOperand(Element));
+ }
+ }
+ break;
}
+
+ case ISD::SELECT_CC: {
+ // Try common optimizations
+ SDValue Ret = AMDGPUTargetLowering::PerformDAGCombine(N, DCI);
+ if (Ret.getNode())
+ return Ret;
+
+ // fold selectcc (selectcc x, y, a, b, cc), b, a, b, seteq ->
+ // selectcc x, y, a, b, inv(cc)
+ //
+ // fold selectcc (selectcc x, y, a, b, cc), b, a, b, setne ->
+ // selectcc x, y, a, b, cc
+ SDValue LHS = N->getOperand(0);
+ if (LHS.getOpcode() != ISD::SELECT_CC) {
+ return SDValue();
+ }
+
+ SDValue RHS = N->getOperand(1);
+ SDValue True = N->getOperand(2);
+ SDValue False = N->getOperand(3);
+ ISD::CondCode NCC = cast<CondCodeSDNode>(N->getOperand(4))->get();
+
+ if (LHS.getOperand(2).getNode() != True.getNode() ||
+ LHS.getOperand(3).getNode() != False.getNode() ||
+ RHS.getNode() != False.getNode()) {
+ return SDValue();
+ }
+
+ switch (NCC) {
+ default: return SDValue();
+ case ISD::SETNE: return LHS;
+ case ISD::SETEQ: {
+ ISD::CondCode LHSCC = cast<CondCodeSDNode>(LHS.getOperand(4))->get();
+ LHSCC = ISD::getSetCCInverse(LHSCC,
+ LHS.getOperand(0).getValueType().isInteger());
+ if (DCI.isBeforeLegalizeOps() ||
+ isCondCodeLegal(LHSCC, LHS.getOperand(0).getSimpleValueType()))
+ return DAG.getSelectCC(SDLoc(N),
+ LHS.getOperand(0),
+ LHS.getOperand(1),
+ LHS.getOperand(2),
+ LHS.getOperand(3),
+ LHSCC);
+ break;
+ }
+ }
+ return SDValue();
+ }
+
+ case AMDGPUISD::EXPORT: {
+ SDValue Arg = N->getOperand(1);
+ if (Arg.getOpcode() != ISD::BUILD_VECTOR)
+ break;
+
+ SDValue NewArgs[8] = {
+ N->getOperand(0), // Chain
+ SDValue(),
+ N->getOperand(2), // ArrayBase
+ N->getOperand(3), // Type
+ N->getOperand(4), // SWZ_X
+ N->getOperand(5), // SWZ_Y
+ N->getOperand(6), // SWZ_Z
+ N->getOperand(7) // SWZ_W
+ };
+ SDLoc DL(N);
+ NewArgs[1] = OptimizeSwizzle(N->getOperand(1), &NewArgs[4], DAG, DL);
+ return DAG.getNode(AMDGPUISD::EXPORT, DL, N->getVTList(), NewArgs);
+ }
+ case AMDGPUISD::TEXTURE_FETCH: {
+ SDValue Arg = N->getOperand(1);
+ if (Arg.getOpcode() != ISD::BUILD_VECTOR)
+ break;
+
+ SDValue NewArgs[19] = {
+ N->getOperand(0),
+ N->getOperand(1),
+ N->getOperand(2),
+ N->getOperand(3),
+ N->getOperand(4),
+ N->getOperand(5),
+ N->getOperand(6),
+ N->getOperand(7),
+ N->getOperand(8),
+ N->getOperand(9),
+ N->getOperand(10),
+ N->getOperand(11),
+ N->getOperand(12),
+ N->getOperand(13),
+ N->getOperand(14),
+ N->getOperand(15),
+ N->getOperand(16),
+ N->getOperand(17),
+ N->getOperand(18),
+ };
+ SDLoc DL(N);
+ NewArgs[1] = OptimizeSwizzle(N->getOperand(1), &NewArgs[2], DAG, DL);
+ return DAG.getNode(AMDGPUISD::TEXTURE_FETCH, DL, N->getVTList(), NewArgs);
+ }
+ }
+
+ return AMDGPUTargetLowering::PerformDAGCombine(N, DCI);
}
-SDValue R600TargetLowering::LowerROTL(SDValue Op, SelectionDAG &DAG) const
-{
- DebugLoc DL = Op.getDebugLoc();
- EVT VT = Op.getValueType();
+static bool
+FoldOperand(SDNode *ParentNode, unsigned SrcIdx, SDValue &Src, SDValue &Neg,
+ SDValue &Abs, SDValue &Sel, SDValue &Imm, SelectionDAG &DAG) {
+ const R600InstrInfo *TII =
+ static_cast<const R600InstrInfo *>(DAG.getSubtarget().getInstrInfo());
+ if (!Src.isMachineOpcode())
+ return false;
+ switch (Src.getMachineOpcode()) {
+ case AMDGPU::FNEG_R600:
+ if (!Neg.getNode())
+ return false;
+ Src = Src.getOperand(0);
+ Neg = DAG.getTargetConstant(1, SDLoc(ParentNode), MVT::i32);
+ return true;
+ case AMDGPU::FABS_R600:
+ if (!Abs.getNode())
+ return false;
+ Src = Src.getOperand(0);
+ Abs = DAG.getTargetConstant(1, SDLoc(ParentNode), MVT::i32);
+ return true;
+ case AMDGPU::CONST_COPY: {
+ unsigned Opcode = ParentNode->getMachineOpcode();
+ bool HasDst = TII->getOperandIdx(Opcode, AMDGPU::OpName::dst) > -1;
+
+ if (!Sel.getNode())
+ return false;
+
+ SDValue CstOffset = Src.getOperand(0);
+ if (ParentNode->getValueType(0).isVector())
+ return false;
+
+ // Gather constants values
+ int SrcIndices[] = {
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src2),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_W),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_W)
+ };
+ std::vector<unsigned> Consts;
+ for (int OtherSrcIdx : SrcIndices) {
+ int OtherSelIdx = TII->getSelIdx(Opcode, OtherSrcIdx);
+ if (OtherSrcIdx < 0 || OtherSelIdx < 0)
+ continue;
+ if (HasDst) {
+ OtherSrcIdx--;
+ OtherSelIdx--;
+ }
+ if (RegisterSDNode *Reg =
+ dyn_cast<RegisterSDNode>(ParentNode->getOperand(OtherSrcIdx))) {
+ if (Reg->getReg() == AMDGPU::ALU_CONST) {
+ ConstantSDNode *Cst
+ = cast<ConstantSDNode>(ParentNode->getOperand(OtherSelIdx));
+ Consts.push_back(Cst->getZExtValue());
+ }
+ }
+ }
+
+ ConstantSDNode *Cst = cast<ConstantSDNode>(CstOffset);
+ Consts.push_back(Cst->getZExtValue());
+ if (!TII->fitsConstReadLimitations(Consts)) {
+ return false;
+ }
+
+ Sel = CstOffset;
+ Src = DAG.getRegister(AMDGPU::ALU_CONST, MVT::f32);
+ return true;
+ }
+ case AMDGPU::MOV_IMM_I32:
+ case AMDGPU::MOV_IMM_F32: {
+ unsigned ImmReg = AMDGPU::ALU_LITERAL_X;
+ uint64_t ImmValue = 0;
+
+
+ if (Src.getMachineOpcode() == AMDGPU::MOV_IMM_F32) {
+ ConstantFPSDNode *FPC = dyn_cast<ConstantFPSDNode>(Src.getOperand(0));
+ float FloatValue = FPC->getValueAPF().convertToFloat();
+ if (FloatValue == 0.0) {
+ ImmReg = AMDGPU::ZERO;
+ } else if (FloatValue == 0.5) {
+ ImmReg = AMDGPU::HALF;
+ } else if (FloatValue == 1.0) {
+ ImmReg = AMDGPU::ONE;
+ } else {
+ ImmValue = FPC->getValueAPF().bitcastToAPInt().getZExtValue();
+ }
+ } else {
+ ConstantSDNode *C = dyn_cast<ConstantSDNode>(Src.getOperand(0));
+ uint64_t Value = C->getZExtValue();
+ if (Value == 0) {
+ ImmReg = AMDGPU::ZERO;
+ } else if (Value == 1) {
+ ImmReg = AMDGPU::ONE_INT;
+ } else {
+ ImmValue = Value;
+ }
+ }
+
+ // Check that we aren't already using an immediate.
+ // XXX: It's possible for an instruction to have more than one
+ // immediate operand, but this is not supported yet.
+ if (ImmReg == AMDGPU::ALU_LITERAL_X) {
+ if (!Imm.getNode())
+ return false;
+ ConstantSDNode *C = dyn_cast<ConstantSDNode>(Imm);
+ assert(C);
+ if (C->getZExtValue())
+ return false;
+ Imm = DAG.getTargetConstant(ImmValue, SDLoc(ParentNode), MVT::i32);
+ }
+ Src = DAG.getRegister(ImmReg, MVT::i32);
+ return true;
+ }
+ default:
+ return false;
+ }
+}
+
+
+/// \brief Fold the instructions after selecting them
+SDNode *R600TargetLowering::PostISelFolding(MachineSDNode *Node,
+ SelectionDAG &DAG) const {
+ const R600InstrInfo *TII =
+ static_cast<const R600InstrInfo *>(DAG.getSubtarget().getInstrInfo());
+ if (!Node->isMachineOpcode())
+ return Node;
+ unsigned Opcode = Node->getMachineOpcode();
+ SDValue FakeOp;
+
+ std::vector<SDValue> Ops(Node->op_begin(), Node->op_end());
+
+ if (Opcode == AMDGPU::DOT_4) {
+ int OperandIdx[] = {
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_W),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_W)
+ };
+ int NegIdx[] = {
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_neg_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_neg_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_neg_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_neg_W),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_neg_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_neg_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_neg_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_neg_W)
+ };
+ int AbsIdx[] = {
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_abs_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_abs_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_abs_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_abs_W),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_abs_X),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_abs_Y),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_abs_Z),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_abs_W)
+ };
+ for (unsigned i = 0; i < 8; i++) {
+ if (OperandIdx[i] < 0)
+ return Node;
+ SDValue &Src = Ops[OperandIdx[i] - 1];
+ SDValue &Neg = Ops[NegIdx[i] - 1];
+ SDValue &Abs = Ops[AbsIdx[i] - 1];
+ bool HasDst = TII->getOperandIdx(Opcode, AMDGPU::OpName::dst) > -1;
+ int SelIdx = TII->getSelIdx(Opcode, OperandIdx[i]);
+ if (HasDst)
+ SelIdx--;
+ SDValue &Sel = (SelIdx > -1) ? Ops[SelIdx] : FakeOp;
+ if (FoldOperand(Node, i, Src, Neg, Abs, Sel, FakeOp, DAG))
+ return DAG.getMachineNode(Opcode, SDLoc(Node), Node->getVTList(), Ops);
+ }
+ } else if (Opcode == AMDGPU::REG_SEQUENCE) {
+ for (unsigned i = 1, e = Node->getNumOperands(); i < e; i += 2) {
+ SDValue &Src = Ops[i];
+ if (FoldOperand(Node, i, Src, FakeOp, FakeOp, FakeOp, FakeOp, DAG))
+ return DAG.getMachineNode(Opcode, SDLoc(Node), Node->getVTList(), Ops);
+ }
+ } else if (Opcode == AMDGPU::CLAMP_R600) {
+ SDValue Src = Node->getOperand(0);
+ if (!Src.isMachineOpcode() ||
+ !TII->hasInstrModifiers(Src.getMachineOpcode()))
+ return Node;
+ int ClampIdx = TII->getOperandIdx(Src.getMachineOpcode(),
+ AMDGPU::OpName::clamp);
+ if (ClampIdx < 0)
+ return Node;
+ SDLoc DL(Node);
+ std::vector<SDValue> Ops(Src->op_begin(), Src->op_end());
+ Ops[ClampIdx - 1] = DAG.getTargetConstant(1, DL, MVT::i32);
+ return DAG.getMachineNode(Src.getMachineOpcode(), DL,
+ Node->getVTList(), Ops);
+ } else {
+ if (!TII->hasInstrModifiers(Opcode))
+ return Node;
+ int OperandIdx[] = {
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src2)
+ };
+ int NegIdx[] = {
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_neg),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_neg),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src2_neg)
+ };
+ int AbsIdx[] = {
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src0_abs),
+ TII->getOperandIdx(Opcode, AMDGPU::OpName::src1_abs),
+ -1
+ };
+ for (unsigned i = 0; i < 3; i++) {
+ if (OperandIdx[i] < 0)
+ return Node;
+ SDValue &Src = Ops[OperandIdx[i] - 1];
+ SDValue &Neg = Ops[NegIdx[i] - 1];
+ SDValue FakeAbs;
+ SDValue &Abs = (AbsIdx[i] > -1) ? Ops[AbsIdx[i] - 1] : FakeAbs;
+ bool HasDst = TII->getOperandIdx(Opcode, AMDGPU::OpName::dst) > -1;
+ int SelIdx = TII->getSelIdx(Opcode, OperandIdx[i]);
+ int ImmIdx = TII->getOperandIdx(Opcode, AMDGPU::OpName::literal);
+ if (HasDst) {
+ SelIdx--;
+ ImmIdx--;
+ }
+ SDValue &Sel = (SelIdx > -1) ? Ops[SelIdx] : FakeOp;
+ SDValue &Imm = Ops[ImmIdx];
+ if (FoldOperand(Node, i, Src, Neg, Abs, Sel, Imm, DAG))
+ return DAG.getMachineNode(Opcode, SDLoc(Node), Node->getVTList(), Ops);
+ }
+ }
- return DAG.getNode(AMDGPUISD::BITALIGN, DL, VT,
- Op.getOperand(0),
- Op.getOperand(0),
- DAG.getNode(ISD::SUB, DL, VT,
- DAG.getConstant(32, MVT::i32),
- Op.getOperand(1)));
+ return Node;
}
projects / oota-llvm.git / blobdiff