using namespace llvm;
SIInstrInfo::SIInstrInfo(const AMDGPUSubtarget &st)
- : AMDGPUInstrInfo(st),
- RI(st) { }
+ : AMDGPUInstrInfo(st), RI(st) {}
//===----------------------------------------------------------------------===//
// TargetInstrInfo callbacks
return;
} else if (AMDGPU::SReg_64RegClass.contains(DestReg)) {
+ if (DestReg == AMDGPU::VCC) {
+ // FIXME: Hack until VReg_1 removed.
+
+ assert(AMDGPU::VGPR_32RegClass.contains(SrcReg));
+ BuildMI(MBB, MI, DL, get(AMDGPU::V_CMP_NE_I32_e32), AMDGPU::VCC)
+ .addImm(0)
+ .addReg(SrcReg, getKillRegState(KillSrc));
+ return;
+ }
+
assert(AMDGPU::SReg_64RegClass.contains(SrcReg));
BuildMI(MBB, MI, DL, get(AMDGPU::S_MOV_B64), DestReg)
.addReg(SrcReg, getKillRegState(KillSrc));
int NewOpc;
// Try to map original to commuted opcode
- if ((NewOpc = AMDGPU::getCommuteRev(Opcode)) != -1)
+ NewOpc = AMDGPU::getCommuteRev(Opcode);
+ // Check if the commuted (REV) opcode exists on the target.
+ if (NewOpc != -1 && pseudoToMCOpcode(NewOpc) != -1)
return NewOpc;
// Try to map commuted to original opcode
- if ((NewOpc = AMDGPU::getCommuteOrig(Opcode)) != -1)
+ NewOpc = AMDGPU::getCommuteOrig(Opcode);
+ // Check if the original (non-REV) opcode exists on the target.
+ if (NewOpc != -1 && pseudoToMCOpcode(NewOpc) != -1)
return NewOpc;
return Opcode;
return AMDGPU::COPY;
}
-static bool shouldTryToSpillVGPRs(MachineFunction *MF) {
-
- SIMachineFunctionInfo *MFI = MF->getInfo<SIMachineFunctionInfo>();
-
- // FIXME: Implement spilling for other shader types.
- return MFI->getShaderType() == ShaderType::COMPUTE;
-
-}
-
void SIInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill,
case 256: Opcode = AMDGPU::SI_SPILL_S256_SAVE; break;
case 512: Opcode = AMDGPU::SI_SPILL_S512_SAVE; break;
}
- } else if(shouldTryToSpillVGPRs(MF) && RI.hasVGPRs(RC)) {
+ } else if(RI.hasVGPRs(RC) && ST.isVGPRSpillingEnabled(MFI)) {
MFI->setHasSpilledVGPRs();
switch(RC->getSize() * 8) {
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const {
MachineFunction *MF = MBB.getParent();
+ const SIMachineFunctionInfo *MFI = MF->getInfo<SIMachineFunctionInfo>();
MachineFrameInfo *FrameInfo = MF->getFrameInfo();
DebugLoc DL = MBB.findDebugLoc(MI);
int Opcode = -1;
case 256: Opcode = AMDGPU::SI_SPILL_S256_RESTORE; break;
case 512: Opcode = AMDGPU::SI_SPILL_S512_RESTORE; break;
}
- } else if(shouldTryToSpillVGPRs(MF) && RI.hasVGPRs(RC)) {
+ } else if(RI.hasVGPRs(RC) && ST.isVGPRSpillingEnabled(MFI)) {
switch(RC->getSize() * 8) {
case 32: Opcode = AMDGPU::SI_SPILL_V32_RESTORE; break;
case 64: Opcode = AMDGPU::SI_SPILL_V64_RESTORE; break;
unsigned Size) const {
MachineFunction *MF = MBB.getParent();
SIMachineFunctionInfo *MFI = MF->getInfo<SIMachineFunctionInfo>();
- const AMDGPUSubtarget &ST = MF->get
Target().getSubtarget<AMDGPUSubtarget>();
+ const AMDGPUSubtarget &ST = MF->getSubtarget<AMDGPUSubtarget>();
const SIRegisterInfo *TRI =
static_cast<const SIRegisterInfo*>(ST.getRegisterInfo());
DebugLoc DL = MBB.findDebugLoc(MI);
(FloatToBits(-4.0f) == Val);
}
-bool SIInstrInfo::isInlineConstant(const MachineOperand &MO) const {
- if (MO.isImm())
- return isInlineConstant(APInt(32, MO.getImm(), true));
+bool SIInstrInfo::isInlineConstant(const MachineOperand &MO,
+ unsigned OpSize) const {
+ if (MO.isImm()) {
+ // MachineOperand provides no way to tell the true operand size, since it
+ // only records a 64-bit value. We need to know the size to determine if a
+ // 32-bit floating point immediate bit pattern is legal for an integer
+ // immediate. It would be for any 32-bit integer operand, but would not be
+ // for a 64-bit one.
+
+ unsigned BitSize = 8 * OpSize;
+ return isInlineConstant(APInt(BitSize, MO.getImm(), true));
+ }
return false;
}
-bool SIInstrInfo::isLiteralConstant(const MachineOperand &MO) const {
- return MO.isImm() && !isInlineConstant(MO);
+bool SIInstrInfo::isLiteralConstant(const MachineOperand &MO,
+ unsigned OpSize) const {
+ return MO.isImm() && !isInlineConstant(MO, OpSize);
}
static bool compareMachineOp(const MachineOperand &Op0,
if (OpInfo.RegClass < 0)
return false;
- if (isLiteralConstant(MO))
+ unsigned OpSize = RI.getRegClass(OpInfo.RegClass)->getSize();
+ if (isLiteralConstant(MO, OpSize))
return RI.opCanUseLiteralConstant(OpInfo.OperandType);
return RI.opCanUseInlineConstant(OpInfo.OperandType);
}
bool SIInstrInfo::usesConstantBus(const MachineRegisterInfo &MRI,
- const MachineOperand &MO) const {
+ const MachineOperand &MO,
+ unsigned OpSize) const {
// Literal constants use the constant bus.
- if (isLiteralConstant(MO))
+ if (isLiteralConstant(MO, OpSize))
return true;
if (!MO.isReg() || !MO.isUse())
switch (Desc.OpInfo[i].OperandType) {
case MCOI::OPERAND_REGISTER:
- if (MI->getOperand(i).isImm() || MI->getOperand(i).isFPImm()) {
+ if (MI->getOperand(i).isImm()) {
ErrInfo = "Illegal immediate value for operand.";
return false;
}
case AMDGPU::OPERAND_REG_IMM32:
break;
case AMDGPU::OPERAND_REG_INLINE_C:
- if (MI->getOperand(i).isImm() && !isInlineConstant(MI->getOperand(i))) {
- ErrInfo = "Illegal immediate value for operand.";
- return false;
+ if (MI->getOperand(i).isImm()) {
+ int RegClass = Desc.OpInfo[i].RegClass;
+ const TargetRegisterClass *RC = RI.getRegClass(RegClass);
+ if (!isInlineConstant(MI->getOperand(i), RC->getSize())) {
+ ErrInfo = "Illegal immediate value for operand.";
+ return false;
+ }
}
break;
case MCOI::OPERAND_IMMEDIATE:
for (int OpIdx : OpIndices) {
if (OpIdx == -1)
break;
-
const MachineOperand &MO = MI->getOperand(OpIdx);
- if (usesConstantBus(MRI, MO)) {
+ if (usesConstantBus(MRI, MO, getOpSize(Opcode, OpIdx))) {
if (MO.isReg()) {
if (MO.getReg() != SGPRUsed)
++ConstantBusCount;
// Verify VOP3
if (isVOP3(Opcode)) {
- if (Src0Idx != -1 && isLiteralConstant(MI->getOperand(Src0Idx))) {
+ if (Src0Idx != -1 &&
+ isLiteralConstant(MI->getOperand(Src0Idx), getOpSize(Opcode, Src0Idx))) {
ErrInfo = "VOP3 src0 cannot be a literal constant.";
return false;
}
- if (Src1Idx != -1 && isLiteralConstant(MI->getOperand(Src1Idx))) {
+ if (Src1Idx != -1 &&
+ isLiteralConstant(MI->getOperand(Src1Idx), getOpSize(Opcode, Src1Idx))) {
ErrInfo = "VOP3 src1 cannot be a literal constant.";
return false;
}
- if (Src2Idx != -1 && isLiteralConstant(MI->getOperand(Src2Idx))) {
+ if (Src2Idx != -1 &&
+ isLiteralConstant(MI->getOperand(Src2Idx), getOpSize(Opcode, Src2Idx))) {
ErrInfo = "VOP3 src2 cannot be a literal constant.";
return false;
}
if (TargetRegisterInfo::isVirtualRegister(Reg))
return MRI.getRegClass(Reg);
- return RI.getRegClass(Reg);
+ return RI.getPhysRegClass(Reg);
}
unsigned RCID = Desc.OpInfo[OpNo].RegClass;
if (!MO)
MO = &MI->getOperand(OpIdx);
- if (isVALU(InstDesc.Opcode) && usesConstantBus(MRI, *MO)) {
+ if (isVALU(InstDesc.Opcode) &&
+ usesConstantBus(MRI, *MO, DefinedRC->getSize())) {
unsigned SGPRUsed =
MO->isReg() ? MO->getReg() : (unsigned)AMDGPU::NoRegister;
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
if (i == OpIdx)
continue;
- if (usesConstantBus(MRI, MI->getOperand(i)) &&
- MI->getOperand(i).isReg() && MI->getOperand(i).getReg() != SGPRUsed) {
+ const MachineOperand &Op = MI->getOperand(i);
+ if (Op.isReg() && Op.getReg() != SGPRUsed &&
+ usesConstantBus(MRI, Op, getOpSize(*MI, i))) {
return false;
}
}
// We can use one SGPR in each VOP3 instruction.
continue;
}
- } else if (!isLiteralConstant(MO)) {
+ } else if (!isLiteralConstant(MO, getOpSize(MI->getOpcode(), Idx))) {
// If it is not a register and not a literal constant, then it must be
// an inline constant which is always legal.
continue;
MachineOperand *VData = getNamedOperand(*MI, AMDGPU::OpName::vdata);
MachineOperand *Offset = getNamedOperand(*MI, AMDGPU::OpName::offset);
MachineOperand *SOffset = getNamedOperand(*MI, AMDGPU::OpName::soffset);
- assert(SOffset->isImm() && SOffset->getImm() == 0 && "Legalizing MUBUF "
- "with non-zero soffset is not implemented");
- (void)SOffset;
// Create the new instruction.
unsigned Addr64Opcode = AMDGPU::getAddr64Inst(MI->getOpcode());
.addReg(AMDGPU::NoRegister) // Dummy value for vaddr.
// This will be replaced later
// with the new value of vaddr.
+ .addOperand(*SOffset)
.addOperand(*Offset);
MI->removeFromParent();
MI->getOperand(2).ChangeToRegister(MI->getOperand(1).getReg(), false);
}
MI->getOperand(1).setReg(SRsrc);
+ MI->addOperand(*MBB->getParent(), MachineOperand::CreateImm(0));
MI->addOperand(*MBB->getParent(), MachineOperand::CreateImm(ImmOffset));
const TargetRegisterClass *NewDstRC =
swapOperands(Inst);
}
break;
+ case AMDGPU::S_LSHL_B64:
+ if (ST.getGeneration() >= AMDGPUSubtarget::VOLCANIC_ISLANDS) {
+ NewOpcode = AMDGPU::V_LSHLREV_B64;
+ swapOperands(Inst);
+ }
+ break;
+ case AMDGPU::S_ASHR_I64:
+ if (ST.getGeneration() >= AMDGPUSubtarget::VOLCANIC_ISLANDS) {
+ NewOpcode = AMDGPU::V_ASHRREV_I64;
+ swapOperands(Inst);
+ }
+ break;
+ case AMDGPU::S_LSHR_B64:
+ if (ST.getGeneration() >= AMDGPUSubtarget::VOLCANIC_ISLANDS) {
+ NewOpcode = AMDGPU::V_LSHRREV_B64;
+ swapOperands(Inst);
+ }
+ break;
case AMDGPU::S_BFE_U64:
case AMDGPU::S_BFM_B64:
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