diff --git a/llvm/include/llvm/CodeGen/TargetLowering.h b/llvm/include/llvm/CodeGen/TargetLowering.h index 7bbad172b2d42..88691b931a8d8 100644 --- a/llvm/include/llvm/CodeGen/TargetLowering.h +++ b/llvm/include/llvm/CodeGen/TargetLowering.h @@ -4654,23 +4654,6 @@ class LLVM_ABI TargetLowering : public TargetLoweringBase { return false; } - /// Allows the target to handle physreg-carried dependency - /// in target-specific way. Used from the ScheduleDAGSDNodes to decide whether - /// to add the edge to the dependency graph. - /// Def - input: Selection DAG node defininfg physical register - /// User - input: Selection DAG node using physical register - /// Op - input: Number of User operand - /// PhysReg - inout: set to the physical register if the edge is - /// necessary, unchanged otherwise - /// Cost - inout: physical register copy cost. - /// Returns 'true' is the edge is necessary, 'false' otherwise - virtual bool checkForPhysRegDependency(SDNode *Def, SDNode *User, unsigned Op, - const TargetRegisterInfo *TRI, - const TargetInstrInfo *TII, - MCRegister &PhysReg, int &Cost) const { - return false; - } - /// Target-specific combining of register parts into its original value virtual SDValue joinRegisterPartsIntoValue(SelectionDAG &DAG, const SDLoc &DL, diff --git a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp index 79022295f0abd..4f4fb9c759ad7 100644 --- a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp @@ -111,15 +111,11 @@ SUnit *ScheduleDAGSDNodes::Clone(SUnit *Old) { static void CheckForPhysRegDependency(SDNode *Def, SDNode *User, unsigned Op, const TargetRegisterInfo *TRI, const TargetInstrInfo *TII, - const TargetLowering &TLI, MCRegister &PhysReg, int &Cost) { if (Op != 2 || User->getOpcode() != ISD::CopyToReg) return; Register Reg = cast(User->getOperand(1))->getReg(); - if (TLI.checkForPhysRegDependency(Def, User, Op, TRI, TII, PhysReg, Cost)) - return; - if (Reg.isVirtual()) return; @@ -490,8 +486,7 @@ void ScheduleDAGSDNodes::AddSchedEdges() { MCRegister PhysReg; int Cost = 1; // Determine if this is a physical register dependency. - const TargetLowering &TLI = DAG->getTargetLoweringInfo(); - CheckForPhysRegDependency(OpN, N, i, TRI, TII, TLI, PhysReg, Cost); + CheckForPhysRegDependency(OpN, N, i, TRI, TII, PhysReg, Cost); assert((!PhysReg || !isChain) && "Chain dependence via physreg data?"); // FIXME: See ScheduleDAGSDNodes::EmitCopyFromReg. For now, scheduler // emits a copy from the physical register to a virtual register unless diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp index 79876ff37b97a..e2334577884b7 100644 --- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp +++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp @@ -18860,31 +18860,6 @@ SITargetLowering::getTargetMMOFlags(const Instruction &I) const { return Flags; } -bool SITargetLowering::checkForPhysRegDependency( - SDNode *Def, SDNode *User, unsigned Op, const TargetRegisterInfo *TRI, - const TargetInstrInfo *TII, MCRegister &PhysReg, int &Cost) const { - if (User->getOpcode() != ISD::CopyToReg) - return false; - if (!Def->isMachineOpcode()) - return false; - MachineSDNode *MDef = dyn_cast(Def); - if (!MDef) - return false; - - unsigned ResNo = User->getOperand(Op).getResNo(); - if (User->getOperand(Op)->getValueType(ResNo) != MVT::i1) - return false; - const MCInstrDesc &II = TII->get(MDef->getMachineOpcode()); - if (II.isCompare() && II.hasImplicitDefOfPhysReg(AMDGPU::SCC)) { - PhysReg = AMDGPU::SCC; - const TargetRegisterClass *RC = - TRI->getMinimalPhysRegClass(PhysReg, Def->getSimpleValueType(ResNo)); - Cost = RC->expensiveOrImpossibleToCopy() ? -1 : RC->getCopyCost(); - return true; - } - return false; -} - void SITargetLowering::emitExpandAtomicAddrSpacePredicate( Instruction *AI) const { // Given: atomicrmw fadd ptr %addr, float %val ordering diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.h b/llvm/lib/Target/AMDGPU/SIISelLowering.h index a474dab8d843c..74e58f4272e10 100644 --- a/llvm/lib/Target/AMDGPU/SIISelLowering.h +++ b/llvm/lib/Target/AMDGPU/SIISelLowering.h @@ -561,11 +561,6 @@ class SITargetLowering final : public AMDGPUTargetLowering { bool denormalsEnabledForType(const SelectionDAG &DAG, EVT VT) const; bool denormalsEnabledForType(LLT Ty, const MachineFunction &MF) const; - bool checkForPhysRegDependency(SDNode *Def, SDNode *User, unsigned Op, - const TargetRegisterInfo *TRI, - const TargetInstrInfo *TII, - MCRegister &PhysReg, int &Cost) const override; - bool isKnownNeverNaNForTargetNode(SDValue Op, const APInt &DemandedElts, const SelectionDAG &DAG, bool SNaN = false, unsigned Depth = 0) const override;