AMDGPU/GlobalISel: Rename MIRBuilder to B. NFC

[arsenm]

LGTM

llvm/lib/Target/AMDGPU/AMDGPUCallLowering.h

 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
 
 namespace llvm {
 
 class AMDGPUTargetLowering;
 class MachineInstrBuilder;
 
 class AMDGPUCallLowering: public CallLowering {
-  Register lowerParameterPtr(MachineIRBuilder &MIRBuilder, Type *ParamTy,
+  Register lowerParameterPtr(MachineIRBuilder &B, Type *ParamTy,
                              uint64_t Offset) const;
 
-  void lowerParameter(MachineIRBuilder &MIRBuilder, Type *ParamTy,
-                      uint64_t Offset, unsigned Align,
-                      Register DstReg) const;
+  void lowerParameter(MachineIRBuilder &B, Type *ParamTy, uint64_t Offset,
+                      unsigned Align, Register DstReg) const;
 
   /// A function of this type is used to perform value split action.
   using SplitArgTy = std::function<void(ArrayRef<Register>, LLT, LLT, int)>;
 
   void splitToValueTypes(const ArgInfo &OrigArgInfo,
                          SmallVectorImpl<ArgInfo> &SplitArgs,
                          const DataLayout &DL, MachineRegisterInfo &MRI,
                          CallingConv::ID CallConv,
                          SplitArgTy SplitArg) const;
 
-  bool lowerReturnVal(MachineIRBuilder &MIRBuilder,
-                      const Value *Val, ArrayRef<Register> VRegs,
-                      MachineInstrBuilder &Ret) const;
+  bool lowerReturnVal(MachineIRBuilder &B, const Value *Val,
+                      ArrayRef<Register> VRegs, MachineInstrBuilder &Ret) const;
 
 public:
   AMDGPUCallLowering(const AMDGPUTargetLowering &TLI);
 
-  bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
+  bool lowerReturn(MachineIRBuilder &B, const Value *Val,
                    ArrayRef<Register> VRegs) const override;
 
-  bool lowerFormalArgumentsKernel(MachineIRBuilder &MIRBuilder,
-                                  const Function &F,
+  bool lowerFormalArgumentsKernel(MachineIRBuilder &B, const Function &F,
                                   ArrayRef<ArrayRef<Register>> VRegs) const;
 
-  bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
+  bool lowerFormalArguments(MachineIRBuilder &B, const Function &F,
                             ArrayRef<ArrayRef<Register>> VRegs) const override;
   static CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg);
   static CCAssignFn *CCAssignFnForReturn(CallingConv::ID CC, bool IsVarArg);
 };
 } // End of namespace llvm;
 #endif

llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp

 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/Support/LowLevelTypeImpl.h"
 
 using namespace llvm;
 
 namespace {
 
 struct OutgoingValueHandler : public CallLowering::ValueHandler {
-  OutgoingValueHandler(MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI,
+  OutgoingValueHandler(MachineIRBuilder &B, MachineRegisterInfo &MRI,
                        MachineInstrBuilder MIB, CCAssignFn *AssignFn)
-      : ValueHandler(MIRBuilder, MRI, AssignFn), MIB(MIB) {}
+      : ValueHandler(B, MRI, AssignFn), MIB(MIB) {}
 
   MachineInstrBuilder MIB;
 
   Register getStackAddress(uint64_t Size, int64_t Offset,
                            MachinePointerInfo &MPO) override {
     llvm_unreachable("not implemented");
   }
 
bool assignArg(unsigned ValNo, MVT ValVT, MVT LocVT,
                  CCState &State) override {
     return AssignFn(ValNo, ValVT, LocVT, LocInfo, Flags, State);
   }
 };
 
 struct IncomingArgHandler : public CallLowering::ValueHandler {
   uint64_t StackUsed = 0;
 
-  IncomingArgHandler(MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI,
+  IncomingArgHandler(MachineIRBuilder &B, MachineRegisterInfo &MRI,
                      CCAssignFn *AssignFn)
-    : ValueHandler(MIRBuilder, MRI, AssignFn) {}
+    : ValueHandler(B, MRI, AssignFn) {}
 
   Register getStackAddress(uint64_t Size, int64_t Offset,
                            MachinePointerInfo &MPO) override {
     auto &MFI = MIRBuilder.getMF().getFrameInfo();
     int FI = MFI.CreateFixedObject(Size, Offset, true);
     MPO = MachinePointerInfo::getFixedStack(MIRBuilder.getMF(), FI);
     Register AddrReg = MRI.createGenericVirtualRegister(
       LLT::pointer(AMDGPUAS::PRIVATE_ADDRESS, 32));
struct IncomingArgHandler : public CallLowering::ValueHandler {
   /// (it's an implicit-def of the BL).
   virtual void markPhysRegUsed(unsigned PhysReg) = 0;
 
   // FIXME: What is the point of this being a callback?
   bool isIncomingArgumentHandler() const override { return true; }
 };
 
 struct FormalArgHandler : public IncomingArgHandler {
-  FormalArgHandler(MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI,
+  FormalArgHandler(MachineIRBuilder &B, MachineRegisterInfo &MRI,
                    CCAssignFn *AssignFn)
-    : IncomingArgHandler(MIRBuilder, MRI, AssignFn) {}
+    : IncomingArgHandler(B, MRI, AssignFn) {}
 
   void markPhysRegUsed(unsigned PhysReg) override {
     MIRBuilder.getMBB().addLiveIn(PhysReg);
   }
 };
 
 }
 
if (OrigTy.isVector()) {
     return LLT::vector(OrigTy.getNumElements() * Factor,
                        OrigTy.getElementType());
   }
 
   return LLT::scalar(OrigTy.getSizeInBits() * Factor);
 }
 
 // TODO: Move to generic code
-static void unpackRegsToOrigType(MachineIRBuilder &MIRBuilder,
+static void unpackRegsToOrigType(MachineIRBuilder &B,
                                  ArrayRef<Register> DstRegs,
                                  Register SrcReg,
                                  LLT SrcTy,
                                  LLT PartTy) {
   assert(DstRegs.size() > 1 && "Nothing to unpack");
 
-  MachineFunction &MF = MIRBuilder.getMF();
+  MachineFunction &MF = B.getMF();
   MachineRegisterInfo &MRI = MF.getRegInfo();
 
   const unsigned SrcSize = SrcTy.getSizeInBits();
   const unsigned PartSize = PartTy.getSizeInBits();
 
   if (SrcTy.isVector() && !PartTy.isVector() &&
       PartSize > SrcTy.getElementType().getSizeInBits()) {
     // Vector was scalarized, and the elements extended.
-    auto UnmergeToEltTy = MIRBuilder.buildUnmerge(SrcTy.getElementType(),
+    auto UnmergeToEltTy = B.buildUnmerge(SrcTy.getElementType(),
                                                   SrcReg);
     for (int i = 0, e = DstRegs.size(); i != e; ++i)
-      MIRBuilder.buildAnyExt(DstRegs[i], UnmergeToEltTy.getReg(i));
+      B.buildAnyExt(DstRegs[i], UnmergeToEltTy.getReg(i));
     return;
   }
 
   if (SrcSize % PartSize == 0) {
-    MIRBuilder.buildUnmerge(DstRegs, SrcReg);
+    B.buildUnmerge(DstRegs, SrcReg);
     return;
   }
 
   const int NumRoundedParts = (SrcSize + PartSize - 1) / PartSize;
 
   LLT BigTy = getMultipleType(PartTy, NumRoundedParts);
-  auto ImpDef = MIRBuilder.buildUndef(BigTy);
+  auto ImpDef = B.buildUndef(BigTy);
 
   Register BigReg = MRI.createGenericVirtualRegister(BigTy);
-  MIRBuilder.buildInsert(BigReg, ImpDef.getReg(0), SrcReg, 0).getReg(0);
+  B.buildInsert(BigReg, ImpDef.getReg(0), SrcReg, 0).getReg(0);
 
   int64_t Offset = 0;
   for (unsigned i = 0, e = DstRegs.size(); i != e; ++i, Offset += PartSize)
-    MIRBuilder.buildExtract(DstRegs[i], BigReg, Offset);
+    B.buildExtract(DstRegs[i], BigReg, Offset);
 }
 
 /// Lower the return value for the already existing \p Ret. This assumes that
-/// \p MIRBuilder's insertion point is correct.
-bool AMDGPUCallLowering::lowerReturnVal(MachineIRBuilder &MIRBuilder,
+/// \p B's insertion point is correct.
+bool AMDGPUCallLowering::lowerReturnVal(MachineIRBuilder &B,
                                         const Value *Val, ArrayRef<Register> VRegs,
                                         MachineInstrBuilder &Ret) const {
   if (!Val)
     return true;
 
-  auto &MF = MIRBuilder.getMF();
+  auto &MF = B.getMF();
   const auto &F = MF.getFunction();
   const DataLayout &DL = MF.getDataLayout();
 
   CallingConv::ID CC = F.getCallingConv();
   const SITargetLowering &TLI = *getTLI<SITargetLowering>();
   MachineRegisterInfo &MRI = MF.getRegInfo();
 
   ArgInfo OrigRetInfo(VRegs, Val->getType());
   setArgFlags(OrigRetInfo, AttributeList::ReturnIndex, DL, F);
   SmallVector<ArgInfo, 4> SplitRetInfos;
 
   splitToValueTypes(
     OrigRetInfo, SplitRetInfos, DL, MRI, CC,
     [&](ArrayRef<Register> Regs, LLT LLTy, LLT PartLLT, int VTSplitIdx) {
-      unpackRegsToOrigType(MIRBuilder, Regs, VRegs[VTSplitIdx], LLTy, PartLLT);
+      unpackRegsToOrigType(B, Regs, VRegs[VTSplitIdx], LLTy, PartLLT);
     });
 
   CCAssignFn *AssignFn = TLI.CCAssignFnForReturn(CC, F.isVarArg());
 
-  OutgoingValueHandler RetHandler(MIRBuilder, MF.getRegInfo(), Ret, AssignFn);
-  return handleAssignments(MIRBuilder, SplitRetInfos, RetHandler);
+  OutgoingValueHandler RetHandler(B, MF.getRegInfo(), Ret, AssignFn);
+  return handleAssignments(B, SplitRetInfos, RetHandler);
 }
 
-bool AMDGPUCallLowering::lowerReturn(MachineIRBuilder &MIRBuilder,
+bool AMDGPUCallLowering::lowerReturn(MachineIRBuilder &B,
                                      const Value *Val,
                                      ArrayRef<Register> VRegs) const {
 
-  MachineFunction &MF = MIRBuilder.getMF();
+  MachineFunction &MF = B.getMF();
   MachineRegisterInfo &MRI = MF.getRegInfo();
   SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
   MFI->setIfReturnsVoid(!Val);
 
   assert(!Val == VRegs.empty() && "Return value without a vreg");
 
-  CallingConv::ID CC = MIRBuilder.getMF().getFunction().getCallingConv();
+  CallingConv::ID CC = B.getMF().getFunction().getCallingConv();
   const bool IsShader = AMDGPU::isShader(CC);
   const bool IsWaveEnd = (IsShader && MFI->returnsVoid()) ||
                          AMDGPU::isKernel(CC);
   if (IsWaveEnd) {
-    MIRBuilder.buildInstr(AMDGPU::S_ENDPGM)
+    B.buildInstr(AMDGPU::S_ENDPGM)
       .addImm(0);
     return true;
   }
 
-  auto const &ST = MIRBuilder.getMF().getSubtarget<GCNSubtarget>();
+  auto const &ST = B.getMF().getSubtarget<GCNSubtarget>();
 
   unsigned ReturnOpc =
       IsShader ? AMDGPU::SI_RETURN_TO_EPILOG : AMDGPU::S_SETPC_B64_return;
 
-  auto Ret = MIRBuilder.buildInstrNoInsert(ReturnOpc);
+  auto Ret = B.buildInstrNoInsert(ReturnOpc);
   Register ReturnAddrVReg;
   if (ReturnOpc == AMDGPU::S_SETPC_B64_return) {
     ReturnAddrVReg = MRI.createVirtualRegister(&AMDGPU::CCR_SGPR_64RegClass);
     Ret.addUse(ReturnAddrVReg);
   }
 
-  if (!lowerReturnVal(MIRBuilder, Val, VRegs, Ret))
+  if (!lowerReturnVal(B, Val, VRegs, Ret))
     return false;
 
   if (ReturnOpc == AMDGPU::S_SETPC_B64_return) {
     const SIRegisterInfo *TRI = ST.getRegisterInfo();
     Register LiveInReturn = MF.addLiveIn(TRI->getReturnAddressReg(MF),
                                          &AMDGPU::SGPR_64RegClass);
-    MIRBuilder.buildCopy(ReturnAddrVReg, LiveInReturn);
+    B.buildCopy(ReturnAddrVReg, LiveInReturn);
   }
 
   // TODO: Handle CalleeSavedRegsViaCopy.
 
-  MIRBuilder.insertInstr(Ret);
+  B.insertInstr(Ret);
   return true;
 }
 
-Register AMDGPUCallLowering::lowerParameterPtr(MachineIRBuilder &MIRBuilder,
+Register AMDGPUCallLowering::lowerParameterPtr(MachineIRBuilder &B,
                                                Type *ParamTy,
                                                uint64_t Offset) const {
 
-  MachineFunction &MF = MIRBuilder.getMF();
+  MachineFunction &MF = B.getMF();
   const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
   MachineRegisterInfo &MRI = MF.getRegInfo();
   const Function &F = MF.getFunction();
   const DataLayout &DL = F.getParent()->getDataLayout();
   PointerType *PtrTy = PointerType::get(ParamTy, AMDGPUAS::CONSTANT_ADDRESS);
   LLT PtrType = getLLTForType(*PtrTy, DL);
   Register DstReg = MRI.createGenericVirtualRegister(PtrType);
   Register KernArgSegmentPtr =
     MFI->getPreloadedReg(AMDGPUFunctionArgInfo::KERNARG_SEGMENT_PTR);
   Register KernArgSegmentVReg = MRI.getLiveInVirtReg(KernArgSegmentPtr);
 
   Register OffsetReg = MRI.createGenericVirtualRegister(LLT::scalar(64));
-  MIRBuilder.buildConstant(OffsetReg, Offset);
+  B.buildConstant(OffsetReg, Offset);
 
-  MIRBuilder.buildGEP(DstReg, KernArgSegmentVReg, OffsetReg);
+  B.buildGEP(DstReg, KernArgSegmentVReg, OffsetReg);
 
   return DstReg;
 }
 
-void AMDGPUCallLowering::lowerParameter(MachineIRBuilder &MIRBuilder,
+void AMDGPUCallLowering::lowerParameter(MachineIRBuilder &B,
                                         Type *ParamTy, uint64_t Offset,
                                         unsigned Align,
                                         Register DstReg) const {
-  MachineFunction &MF = MIRBuilder.getMF();
+  MachineFunction &MF = B.getMF();
   const Function &F = MF.getFunction();
   const DataLayout &DL = F.getParent()->getDataLayout();
   PointerType *PtrTy = PointerType::get(ParamTy, AMDGPUAS::CONSTANT_ADDRESS);
   MachinePointerInfo PtrInfo(UndefValue::get(PtrTy));
   unsigned TypeSize = DL.getTypeStoreSize(ParamTy);
-  Register PtrReg = lowerParameterPtr(MIRBuilder, ParamTy, Offset);
+  Register PtrReg = lowerParameterPtr(B, ParamTy, Offset);
 
   MachineMemOperand *MMO =
       MF.getMachineMemOperand(PtrInfo, MachineMemOperand::MOLoad |
                                        MachineMemOperand::MODereferenceable |
                                        MachineMemOperand::MOInvariant,
                                        TypeSize, Align);
 
-  MIRBuilder.buildLoad(DstReg, PtrReg, *MMO);
+  B.buildLoad(DstReg, PtrReg, *MMO);
 }
 
 // Allocate special inputs passed in user SGPRs.
 static void allocateHSAUserSGPRs(CCState &CCInfo,
-                                 MachineIRBuilder &MIRBuilder,
+                                 MachineIRBuilder &B,
                                  MachineFunction &MF,
                                  const SIRegisterInfo &TRI,
                                  SIMachineFunctionInfo &Info) {
   // FIXME: How should these inputs interact with inreg / custom SGPR inputs?
   if (Info.hasPrivateSegmentBuffer()) {
     unsigned PrivateSegmentBufferReg = Info.addPrivateSegmentBuffer(TRI);
     MF.addLiveIn(PrivateSegmentBufferReg, &AMDGPU::SGPR_128RegClass);
     CCInfo.AllocateReg(PrivateSegmentBufferReg);
static void allocateHSAUserSGPRs(CCState &CCInfo,
   }
 
   if (Info.hasKernargSegmentPtr()) {
     MachineRegisterInfo &MRI = MF.getRegInfo();
     Register InputPtrReg = Info.addKernargSegmentPtr(TRI);
     const LLT P4 = LLT::pointer(AMDGPUAS::CONSTANT_ADDRESS, 64);
     Register VReg = MRI.createGenericVirtualRegister(P4);
     MRI.addLiveIn(InputPtrReg, VReg);
-    MIRBuilder.getMBB().addLiveIn(InputPtrReg);
-    MIRBuilder.buildCopy(VReg, InputPtrReg);
+    B.getMBB().addLiveIn(InputPtrReg);
+    B.buildCopy(VReg, InputPtrReg);
     CCInfo.AllocateReg(InputPtrReg);
   }
 
   if (Info.hasDispatchID()) {
     unsigned DispatchIDReg = Info.addDispatchID(TRI);
     MF.addLiveIn(DispatchIDReg, &AMDGPU::SGPR_64RegClass);
     CCInfo.AllocateReg(DispatchIDReg);
   }
 
   if (Info.hasFlatScratchInit()) {
     unsigned FlatScratchInitReg = Info.addFlatScratchInit(TRI);
     MF.addLiveIn(FlatScratchInitReg, &AMDGPU::SGPR_64RegClass);
     CCInfo.AllocateReg(FlatScratchInitReg);
   }
 
   // TODO: Add GridWorkGroupCount user SGPRs when used. For now with HSA we read
   // these from the dispatch pointer.
 }
 
 bool AMDGPUCallLowering::lowerFormalArgumentsKernel(
-    MachineIRBuilder &MIRBuilder, const Function &F,
+    MachineIRBuilder &B, const Function &F,
     ArrayRef<ArrayRef<Register>> VRegs) const {
-  MachineFunction &MF = MIRBuilder.getMF();
+  MachineFunction &MF = B.getMF();
   const GCNSubtarget *Subtarget = &MF.getSubtarget<GCNSubtarget>();
   MachineRegisterInfo &MRI = MF.getRegInfo();
   SIMachineFunctionInfo *Info = MF.getInfo<SIMachineFunctionInfo>();
   const SIRegisterInfo *TRI = Subtarget->getRegisterInfo();
   const SITargetLowering &TLI = *getTLI<SITargetLowering>();
 
   const DataLayout &DL = F.getParent()->getDataLayout();
 
   SmallVector<CCValAssign, 16> ArgLocs;
   CCState CCInfo(F.getCallingConv(), F.isVarArg(), MF, ArgLocs, F.getContext());
 
-  allocateHSAUserSGPRs(CCInfo, MIRBuilder, MF, *TRI, *Info);
+  allocateHSAUserSGPRs(CCInfo, B, MF, *TRI, *Info);
 
   unsigned i = 0;
   const unsigned KernArgBaseAlign = 16;
   const unsigned BaseOffset = Subtarget->getExplicitKernelArgOffset(F);
   uint64_t ExplicitArgOffset = 0;
 
   // TODO: Align down to dword alignment and extract bits for extending loads.
   for (auto &Arg : F.args()) {
for (auto &Arg : F.args()) {
 
     ArrayRef<Register> OrigArgRegs = VRegs[i];
     Register ArgReg =
       OrigArgRegs.size() == 1
       ? OrigArgRegs[0]
       : MRI.createGenericVirtualRegister(getLLTForType(*ArgTy, DL));
     unsigned Align = MinAlign(KernArgBaseAlign, ArgOffset);
     ArgOffset = alignTo(ArgOffset, DL.getABITypeAlignment(ArgTy));
-    lowerParameter(MIRBuilder, ArgTy, ArgOffset, Align, ArgReg);
+    lowerParameter(B, ArgTy, ArgOffset, Align, ArgReg);
     if (OrigArgRegs.size() > 1)
-      unpackRegs(OrigArgRegs, ArgReg, ArgTy, MIRBuilder);
+      unpackRegs(OrigArgRegs, ArgReg, ArgTy, B);
     ++i;
   }
 
   TLI.allocateSpecialEntryInputVGPRs(CCInfo, MF, *TRI, *Info);
   TLI.allocateSystemSGPRs(CCInfo, MF, *Info, F.getCallingConv(), false);
   return true;
 }
 
 // TODO: Move this to generic code
-static void packSplitRegsToOrigType(MachineIRBuilder &MIRBuilder,
+static void packSplitRegsToOrigType(MachineIRBuilder &B,
                                     ArrayRef<Register> OrigRegs,
                                     ArrayRef<Register> Regs,
                                     LLT LLTy,
                                     LLT PartLLT) {
   if (!LLTy.isVector() && !PartLLT.isVector()) {
-    MIRBuilder.buildMerge(OrigRegs[0], Regs);
+    B.buildMerge(OrigRegs[0], Regs);
     return;
   }
 
   if (LLTy.isVector() && PartLLT.isVector()) {
     assert(LLTy.getElementType() == PartLLT.getElementType());
 
     int DstElts = LLTy.getNumElements();
     int PartElts = PartLLT.getNumElements();
     if (DstElts % PartElts == 0)
-      MIRBuilder.buildConcatVectors(OrigRegs[0], Regs);
+      B.buildConcatVectors(OrigRegs[0], Regs);
     else {
       // Deal with v3s16 split into v2s16
       assert(PartElts == 2 && DstElts % 2 != 0);
       int RoundedElts = PartElts * ((DstElts + PartElts - 1) / PartElts);
 
       LLT RoundedDestTy = LLT::vector(RoundedElts, PartLLT.getElementType());
-      auto RoundedConcat = MIRBuilder.buildConcatVectors(RoundedDestTy, Regs);
-      MIRBuilder.buildExtract(OrigRegs[0], RoundedConcat, 0);
+      auto RoundedConcat = B.buildConcatVectors(RoundedDestTy, Regs);
+      B.buildExtract(OrigRegs[0], RoundedConcat, 0);
     }
 
     return;
   }
 
   assert(LLTy.isVector() && !PartLLT.isVector());
 
   LLT DstEltTy = LLTy.getElementType();
   if (DstEltTy == PartLLT) {
     // Vector was trivially scalarized.
-    MIRBuilder.buildBuildVector(OrigRegs[0], Regs);
+    B.buildBuildVector(OrigRegs[0], Regs);
   } else if (DstEltTy.getSizeInBits() > PartLLT.getSizeInBits()) {
     // Deal with vector with 64-bit elements decomposed to 32-bit
     // registers. Need to create intermediate 64-bit elements.
     SmallVector<Register, 8> EltMerges;
     int PartsPerElt = DstEltTy.getSizeInBits() / PartLLT.getSizeInBits();
 
     assert(DstEltTy.getSizeInBits() % PartLLT.getSizeInBits() == 0);
 
     for (int I = 0, NumElts = LLTy.getNumElements(); I != NumElts; ++I)  {
-      auto Merge = MIRBuilder.buildMerge(DstEltTy,
+      auto Merge = B.buildMerge(DstEltTy,
                                          Regs.take_front(PartsPerElt));
       EltMerges.push_back(Merge.getReg(0));
       Regs = Regs.drop_front(PartsPerElt);
     }
 
-    MIRBuilder.buildBuildVector(OrigRegs[0], EltMerges);
+    B.buildBuildVector(OrigRegs[0], EltMerges);
   } else {
     // Vector was split, and elements promoted to a wider type.
     LLT BVType = LLT::vector(LLTy.getNumElements(), PartLLT);
-    auto BV = MIRBuilder.buildBuildVector(BVType, Regs);
-    MIRBuilder.buildTrunc(OrigRegs[0], BV);
+    auto BV = B.buildBuildVector(BVType, Regs);
+    B.buildTrunc(OrigRegs[0], BV);
   }
 }
 
 bool AMDGPUCallLowering::lowerFormalArguments(
-    MachineIRBuilder &MIRBuilder, const Function &F,
+    MachineIRBuilder &B, const Function &F,
     ArrayRef<ArrayRef<Register>> VRegs) const {
   CallingConv::ID CC = F.getCallingConv();
 
   // The infrastructure for normal calling convention lowering is essentially
   // useless for kernels. We want to avoid any kind of legalization or argument
   // splitting.
   if (CC == CallingConv::AMDGPU_KERNEL)
-    return lowerFormalArgumentsKernel(MIRBuilder, F, VRegs);
+    return lowerFormalArgumentsKernel(B, F, VRegs);
 
   const bool IsShader = AMDGPU::isShader(CC);
   const bool IsEntryFunc = AMDGPU::isEntryFunctionCC(CC);
 
-  MachineFunction &MF = MIRBuilder.getMF();
-  MachineBasicBlock &MBB = MIRBuilder.getMBB();
+  MachineFunction &MF = B.getMF();
+  MachineBasicBlock &MBB = B.getMBB();
   MachineRegisterInfo &MRI = MF.getRegInfo();
   SIMachineFunctionInfo *Info = MF.getInfo<SIMachineFunctionInfo>();
   const GCNSubtarget &Subtarget = MF.getSubtarget<GCNSubtarget>();
   const SIRegisterInfo *TRI = Subtarget.getRegisterInfo();
   const DataLayout &DL = F.getParent()->getDataLayout();
 
 
   SmallVector<CCValAssign, 16> ArgLocs;
   CCState CCInfo(CC, F.isVarArg(), MF, ArgLocs, F.getContext());
 
   if (!IsEntryFunc) {
     Register ReturnAddrReg = TRI->getReturnAddressReg(MF);
     Register LiveInReturn = MF.addLiveIn(ReturnAddrReg,
                                          &AMDGPU::SGPR_64RegClass);
     MBB.addLiveIn(ReturnAddrReg);
-    MIRBuilder.buildCopy(LiveInReturn, ReturnAddrReg);
+    B.buildCopy(LiveInReturn, ReturnAddrReg);
   }
 
   if (Info->hasImplicitBufferPtr()) {
     Register ImplicitBufferPtrReg = Info->addImplicitBufferPtr(*TRI);
     MF.addLiveIn(ImplicitBufferPtrReg, &AMDGPU::SGPR_64RegClass);
     CCInfo.AllocateReg(ImplicitBufferPtrReg);
   }
 
if (CC == CallingConv::AMDGPU_PS && !InReg && PSInputNum <= 15) {
         if (ArgUsed)
           Info->markPSInputEnabled(PSInputNum);
       }
 
       ++PSInputNum;
 
       if (SkipArg) {
         for (int I = 0, E = VRegs[Idx].size(); I != E; ++I)
-          MIRBuilder.buildUndef(VRegs[Idx][I]);
+          B.buildUndef(VRegs[Idx][I]);
 
         ++Idx;
         continue;
       }
     }
 
     ArgInfo OrigArg(VRegs[Idx], Arg.getType());
     setArgFlags(OrigArg, Idx + AttributeList::FirstArgIndex, DL, F);
 
     splitToValueTypes(
       OrigArg, SplitArgs, DL, MRI, CC,
       // FIXME: We should probably be passing multiple registers to
       // handleAssignments to do this
       [&](ArrayRef<Register> Regs, LLT LLTy, LLT PartLLT, int VTSplitIdx) {
-        packSplitRegsToOrigType(MIRBuilder, VRegs[Idx][VTSplitIdx], Regs,
+        packSplitRegsToOrigType(B, VRegs[Idx][VTSplitIdx], Regs,
                                 LLTy, PartLLT);
       });
 
     ++Idx;
   }
 
   // At least one interpolation mode must be enabled or else the GPU will
   // hang.
if (Subtarget.isAmdPalOS()) {
           countTrailingZeros(Info->getPSInputAddr(), ZB_Undefined));
     }
   }
 
   const SITargetLowering &TLI = *getTLI<SITargetLowering>();
   CCAssignFn *AssignFn = TLI.CCAssignFnForCall(CC, F.isVarArg());
 
   if (!MBB.empty())
-    MIRBuilder.setInstr(*MBB.begin());
+    B.setInstr(*MBB.begin());
 
-  FormalArgHandler Handler(MIRBuilder, MRI, AssignFn);
-  if (!handleAssignments(CCInfo, ArgLocs, MIRBuilder, SplitArgs, Handler))
+  FormalArgHandler Handler(B, MRI, AssignFn);
+  if (!handleAssignments(CCInfo, ArgLocs, B, SplitArgs, Handler))
     return false;
 
   if (!IsEntryFunc) {
     // Special inputs come after user arguments.
     TLI.allocateSpecialInputVGPRs(CCInfo, MF, *TRI, *Info);
   }
 
   // Start adding system SGPRs.
   if (IsEntryFunc) {
     TLI.allocateSystemSGPRs(CCInfo, MF, *Info, CC, IsShader);
   } else {
     CCInfo.AllocateReg(Info->getScratchRSrcReg());
     CCInfo.AllocateReg(Info->getScratchWaveOffsetReg());
     CCInfo.AllocateReg(Info->getFrameOffsetReg());
     TLI.allocateSpecialInputSGPRs(CCInfo, MF, *TRI, *Info);
   }
 
   // Move back to the end of the basic block.
-  MIRBuilder.setMBB(MBB);
+  B.setMBB(MBB);
 
   return true;
 }

llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.h

 class AMDGPULegalizerInfo : public LegalizerInfo {
   const GCNSubtarget &ST;
 
 public:
   AMDGPULegalizerInfo(const GCNSubtarget &ST,
                       const GCNTargetMachine &TM);
 
   bool legalizeCustom(MachineInstr &MI, MachineRegisterInfo &MRI,
-                      MachineIRBuilder &MIRBuilder,
+                      MachineIRBuilder &B,
                       GISelChangeObserver &Observer) const override;
 
   Register getSegmentAperture(unsigned AddrSpace,
                               MachineRegisterInfo &MRI,
-                              MachineIRBuilder &MIRBuilder) const;
+                              MachineIRBuilder &B) const;
 
   bool legalizeAddrSpaceCast(MachineInstr &MI, MachineRegisterInfo &MRI,
-                             MachineIRBuilder &MIRBuilder) const;
+                             MachineIRBuilder &B) const;
   bool legalizeFrint(MachineInstr &MI, MachineRegisterInfo &MRI,
-                     MachineIRBuilder &MIRBuilder) const;
+                     MachineIRBuilder &B) const;
   bool legalizeFceil(MachineInstr &MI, MachineRegisterInfo &MRI,
-                     MachineIRBuilder &MIRBuilder) const;
+                     MachineIRBuilder &B) const;
   bool legalizeIntrinsicTrunc(MachineInstr &MI, MachineRegisterInfo &MRI,
-                              MachineIRBuilder &MIRBuilder) const;
+                              MachineIRBuilder &B) const;
   bool legalizeITOFP(MachineInstr &MI, MachineRegisterInfo &MRI,
-                     MachineIRBuilder &MIRBuilder, bool Signed) const;
+                     MachineIRBuilder &B, bool Signed) const;
   bool legalizeMinNumMaxNum(MachineInstr &MI, MachineRegisterInfo &MRI,
-                            MachineIRBuilder &MIRBuilder) const;
+                            MachineIRBuilder &B) const;
   bool legalizeExtractVectorElt(MachineInstr &MI, MachineRegisterInfo &MRI,
-                                MachineIRBuilder &MIRBuilder) const;
+                                MachineIRBuilder &B) const;
   bool legalizeInsertVectorElt(MachineInstr &MI, MachineRegisterInfo &MRI,
-                               MachineIRBuilder &MIRBuilder) const;
+                               MachineIRBuilder &B) const;
   bool legalizeSinCos(MachineInstr &MI, MachineRegisterInfo &MRI,
-                      MachineIRBuilder &MIRBuilder) const;
+                      MachineIRBuilder &B) const;
 
   bool legalizeGlobalValue(MachineInstr &MI, MachineRegisterInfo &MRI,
-                           MachineIRBuilder &MIRBuilder) const;
+                           MachineIRBuilder &B) const;
 
   Register getLiveInRegister(MachineRegisterInfo &MRI,
                              Register Reg, LLT Ty) const;
 
   bool loadInputValue(Register DstReg, MachineIRBuilder &B,
                       const ArgDescriptor *Arg) const;
   bool legalizePreloadedArgIntrin(
     MachineInstr &MI, MachineRegisterInfo &MRI, MachineIRBuilder &B,
     AMDGPUFunctionArgInfo::PreloadedValue ArgType) const;
 
   bool legalizeFDIVFast(MachineInstr &MI, MachineRegisterInfo &MRI,
                         MachineIRBuilder &B) const;
 
   bool legalizeImplicitArgPtr(MachineInstr &MI, MachineRegisterInfo &MRI,
                               MachineIRBuilder &B) const;
   bool legalizeIsAddrSpace(MachineInstr &MI, MachineRegisterInfo &MRI,
                            MachineIRBuilder &B, unsigned AddrSpace) const;
   bool legalizeIntrinsic(MachineInstr &MI, MachineRegisterInfo &MRI,
-                         MachineIRBuilder &MIRBuilder) const override;
+                         MachineIRBuilder &B) const override;
 
 };
 } // End llvm namespace.
 #endif

llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp

AMDGPULegalizerInfo::AMDGPULegalizerInfo(const GCNSubtarget &ST_,
   getActionDefinitionsBuilder(G_SEXT_INREG).lower();
 
   computeTables();
   verify(*ST.getInstrInfo());
 }
 
 bool AMDGPULegalizerInfo::legalizeCustom(MachineInstr &MI,
                                          MachineRegisterInfo &MRI,
-                                         MachineIRBuilder &MIRBuilder,
+                                         MachineIRBuilder &B,
                                          GISelChangeObserver &Observer) const {
   switch (MI.getOpcode()) {
   case TargetOpcode::G_ADDRSPACE_CAST:
-    return legalizeAddrSpaceCast(MI, MRI, MIRBuilder);
+    return legalizeAddrSpaceCast(MI, MRI, B);
   case TargetOpcode::G_FRINT:
-    return legalizeFrint(MI, MRI, MIRBuilder);
+    return legalizeFrint(MI, MRI, B);
   case TargetOpcode::G_FCEIL:
-    return legalizeFceil(MI, MRI, MIRBuilder);
+    return legalizeFceil(MI, MRI, B);
   case TargetOpcode::G_INTRINSIC_TRUNC:
-    return legalizeIntrinsicTrunc(MI, MRI, MIRBuilder);
+    return legalizeIntrinsicTrunc(MI, MRI, B);
   case TargetOpcode::G_SITOFP:
-    return legalizeITOFP(MI, MRI, MIRBuilder, true);
+    return legalizeITOFP(MI, MRI, B, true);
   case TargetOpcode::G_UITOFP:
-    return legalizeITOFP(MI, MRI, MIRBuilder, false);
+    return legalizeITOFP(MI, MRI, B, false);
   case TargetOpcode::G_FMINNUM:
   case TargetOpcode::G_FMAXNUM:
   case TargetOpcode::G_FMINNUM_IEEE:
   case TargetOpcode::G_FMAXNUM_IEEE:
-    return legalizeMinNumMaxNum(MI, MRI, MIRBuilder);
+    return legalizeMinNumMaxNum(MI, MRI, B);
   case TargetOpcode::G_EXTRACT_VECTOR_ELT:
-    return legalizeExtractVectorElt(MI, MRI, MIRBuilder);
+    return legalizeExtractVectorElt(MI, MRI, B);
   case TargetOpcode::G_INSERT_VECTOR_ELT:
-    return legalizeInsertVectorElt(MI, MRI, MIRBuilder);
+    return legalizeInsertVectorElt(MI, MRI, B);
   case TargetOpcode::G_FSIN:
   case TargetOpcode::G_FCOS:
-    return legalizeSinCos(MI, MRI, MIRBuilder);
+    return legalizeSinCos(MI, MRI, B);
   case TargetOpcode::G_GLOBAL_VALUE:
-    return legalizeGlobalValue(MI, MRI, MIRBuilder);
+    return legalizeGlobalValue(MI, MRI, B);
   default:
     return false;
   }
 
   llvm_unreachable("expected switch to return");
 }
 
 Register AMDGPULegalizerInfo::getSegmentAperture(
   unsigned AS,
   MachineRegisterInfo &MRI,
-  MachineIRBuilder &MIRBuilder) const {
-  MachineFunction &MF = MIRBuilder.getMF();
+  MachineIRBuilder &B) const {
+  MachineFunction &MF = B.getMF();
   const GCNSubtarget &ST = MF.getSubtarget<GCNSubtarget>();
   const LLT S32 = LLT::scalar(32);
 
   if (ST.hasApertureRegs()) {
     // FIXME: Use inline constants (src_{shared, private}_base) instead of
     // getreg.
     unsigned Offset = AS == AMDGPUAS::LOCAL_ADDRESS ?
         AMDGPU::Hwreg::OFFSET_SRC_SHARED_BASE :
         AMDGPU::Hwreg::OFFSET_SRC_PRIVATE_BASE;
     unsigned WidthM1 = AS == AMDGPUAS::LOCAL_ADDRESS ?
         AMDGPU::Hwreg::WIDTH_M1_SRC_SHARED_BASE :
         AMDGPU::Hwreg::WIDTH_M1_SRC_PRIVATE_BASE;
     unsigned Encoding =
         AMDGPU::Hwreg::ID_MEM_BASES << AMDGPU::Hwreg::ID_SHIFT_ |
         Offset << AMDGPU::Hwreg::OFFSET_SHIFT_ |
         WidthM1 << AMDGPU::Hwreg::WIDTH_M1_SHIFT_;
 
     Register ApertureReg = MRI.createGenericVirtualRegister(S32);
     Register GetReg = MRI.createVirtualRegister(&AMDGPU::SReg_32RegClass);
 
-    MIRBuilder.buildInstr(AMDGPU::S_GETREG_B32)
+    B.buildInstr(AMDGPU::S_GETREG_B32)
       .addDef(GetReg)
       .addImm(Encoding);
     MRI.setType(GetReg, S32);
 
-    auto ShiftAmt = MIRBuilder.buildConstant(S32, WidthM1 + 1);
-    MIRBuilder.buildInstr(TargetOpcode::G_SHL)
+    auto ShiftAmt = B.buildConstant(S32, WidthM1 + 1);
+    B.buildInstr(TargetOpcode::G_SHL)
       .addDef(ApertureReg)
       .addUse(GetReg)
       .addUse(ShiftAmt.getReg(0));
 
     return ApertureReg;
   }
 
   Register QueuePtr = MRI.createGenericVirtualRegister(
     LLT::pointer(AMDGPUAS::CONSTANT_ADDRESS, 64));
 
   const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
-  if (!loadInputValue(QueuePtr, MIRBuilder, &MFI->getArgInfo().QueuePtr))
+  if (!loadInputValue(QueuePtr, B, &MFI->getArgInfo().QueuePtr))
     return Register();
 
   // Offset into amd_queue_t for group_segment_aperture_base_hi /
   // private_segment_aperture_base_hi.
   uint32_t StructOffset = (AS == AMDGPUAS::LOCAL_ADDRESS) ? 0x40 : 0x44;
 
   // FIXME: Don't use undef
   Value *V = UndefValue::get(PointerType::get(
                                Type::getInt8Ty(MF.getFunction().getContext()),
                                AMDGPUAS::CONSTANT_ADDRESS));
 
   MachinePointerInfo PtrInfo(V, StructOffset);
   MachineMemOperand *MMO = MF.getMachineMemOperand(
     PtrInfo,
     MachineMemOperand::MOLoad |
     MachineMemOperand::MODereferenceable |
     MachineMemOperand::MOInvariant,
     4,
     MinAlign(64, StructOffset));
 
   Register LoadResult = MRI.createGenericVirtualRegister(S32);
   Register LoadAddr;
 
-  MIRBuilder.materializeGEP(LoadAddr, QueuePtr, LLT::scalar(64), StructOffset);
-  MIRBuilder.buildLoad(LoadResult, LoadAddr, *MMO);
+  B.materializeGEP(LoadAddr, QueuePtr, LLT::scalar(64), StructOffset);
+  B.buildLoad(LoadResult, LoadAddr, *MMO);
   return LoadResult;
 }
 
 bool AMDGPULegalizerInfo::legalizeAddrSpaceCast(
   MachineInstr &MI, MachineRegisterInfo &MRI,
-  MachineIRBuilder &MIRBuilder) const {
-  MachineFunction &MF = MIRBuilder.getMF();
+  MachineIRBuilder &B) const {
+  MachineFunction &MF = B.getMF();
 
-  MIRBuilder.setInstr(MI);
+  B.setInstr(MI);
 
   const LLT S32 = LLT::scalar(32);
   Register Dst = MI.getOperand(0).getReg();
   Register Src = MI.getOperand(1).getReg();
 
   LLT DstTy = MRI.getType(Dst);
   LLT SrcTy = MRI.getType(Src);
   unsigned DestAS = DstTy.getAddressSpace();
   unsigned SrcAS = SrcTy.getAddressSpace();
 
   // TODO: Avoid reloading from the queue ptr for each cast, or at least each
   // vector element.
   assert(!DstTy.isVector());
 
   const AMDGPUTargetMachine &TM
     = static_cast<const AMDGPUTargetMachine &>(MF.getTarget());
 
   const GCNSubtarget &ST = MF.getSubtarget<GCNSubtarget>();
   if (ST.getTargetLowering()->isNoopAddrSpaceCast(SrcAS, DestAS)) {
-    MI.setDesc(MIRBuilder.getTII().get(TargetOpcode::G_BITCAST));
+    MI.setDesc(B.getTII().get(TargetOpcode::G_BITCAST));
     return true;
   }
 
   if (DestAS == AMDGPUAS::CONSTANT_ADDRESS_32BIT) {
     // Truncate.
-    MIRBuilder.buildExtract(Dst, Src, 0);
+    B.buildExtract(Dst, Src, 0);
     MI.eraseFromParent();
     return true;
   }
 
   if (SrcAS == AMDGPUAS::CONSTANT_ADDRESS_32BIT) {
     const SIMachineFunctionInfo *Info = MF.getInfo<SIMachineFunctionInfo>();
     uint32_t AddrHiVal = Info->get32BitAddressHighBits();
 
     // FIXME: This is a bit ugly due to creating a merge of 2 pointers to
     // another. Merge operands are required to be the same type, but creating an
     // extra ptrtoint would be kind of pointless.
-    auto HighAddr = MIRBuilder.buildConstant(
+    auto HighAddr = B.buildConstant(
       LLT::pointer(AMDGPUAS::CONSTANT_ADDRESS_32BIT, 32), AddrHiVal);
-    MIRBuilder.buildMerge(Dst, {Src, HighAddr.getReg(0)});
+    B.buildMerge(Dst, {Src, HighAddr.getReg(0)});
     MI.eraseFromParent();
     return true;
   }
 
   if (SrcAS == AMDGPUAS::FLAT_ADDRESS) {
     assert(DestAS == AMDGPUAS::LOCAL_ADDRESS ||
            DestAS == AMDGPUAS::PRIVATE_ADDRESS);
     unsigned NullVal = TM.getNullPointerValue(DestAS);
 
-    auto SegmentNull = MIRBuilder.buildConstant(DstTy, NullVal);
-    auto FlatNull = MIRBuilder.buildConstant(SrcTy, 0);
+    auto SegmentNull = B.buildConstant(DstTy, NullVal);
+    auto FlatNull = B.buildConstant(SrcTy, 0);
 
     Register PtrLo32 = MRI.createGenericVirtualRegister(DstTy);
 
     // Extract low 32-bits of the pointer.
-    MIRBuilder.buildExtract(PtrLo32, Src, 0);
+    B.buildExtract(PtrLo32, Src, 0);
 
     Register CmpRes = MRI.createGenericVirtualRegister(LLT::scalar(1));
-    MIRBuilder.buildICmp(CmpInst::ICMP_NE, CmpRes, Src, FlatNull.getReg(0));
-    MIRBuilder.buildSelect(Dst, CmpRes, PtrLo32, SegmentNull.getReg(0));
+    B.buildICmp(CmpInst::ICMP_NE, CmpRes, Src, FlatNull.getReg(0));
+    B.buildSelect(Dst, CmpRes, PtrLo32, SegmentNull.getReg(0));
 
     MI.eraseFromParent();
     return true;
   }
 
   if (SrcAS != AMDGPUAS::LOCAL_ADDRESS && SrcAS != AMDGPUAS::PRIVATE_ADDRESS)
     return false;
 
   if (!ST.hasFlatAddressSpace())
     return false;
 
   auto SegmentNull =
-      MIRBuilder.buildConstant(SrcTy, TM.getNullPointerValue(SrcAS));
+      B.buildConstant(SrcTy, TM.getNullPointerValue(SrcAS));
   auto FlatNull =
-      MIRBuilder.buildConstant(DstTy, TM.getNullPointerValue(DestAS));
+      B.buildConstant(DstTy, TM.getNullPointerValue(DestAS));
 
-  Register ApertureReg = getSegmentAperture(DestAS, MRI, MIRBuilder);
+  Register ApertureReg = getSegmentAperture(DestAS, MRI, B);
   if (!ApertureReg.isValid())
     return false;
 
   Register CmpRes = MRI.createGenericVirtualRegister(LLT::scalar(1));
-  MIRBuilder.buildICmp(CmpInst::ICMP_NE, CmpRes, Src, SegmentNull.getReg(0));
+  B.buildICmp(CmpInst::ICMP_NE, CmpRes, Src, SegmentNull.getReg(0));
 
   Register BuildPtr = MRI.createGenericVirtualRegister(DstTy);
 
   // Coerce the type of the low half of the result so we can use merge_values.
   Register SrcAsInt = MRI.createGenericVirtualRegister(S32);
-  MIRBuilder.buildInstr(TargetOpcode::G_PTRTOINT)
+  B.buildInstr(TargetOpcode::G_PTRTOINT)
     .addDef(SrcAsInt)
     .addUse(Src);
 
   // TODO: Should we allow mismatched types but matching sizes in merges to
   // avoid the ptrtoint?
-  MIRBuilder.buildMerge(BuildPtr, {SrcAsInt, ApertureReg});
-  MIRBuilder.buildSelect(Dst, CmpRes, BuildPtr, FlatNull.getReg(0));
+  B.buildMerge(BuildPtr, {SrcAsInt, ApertureReg});
+  B.buildSelect(Dst, CmpRes, BuildPtr, FlatNull.getReg(0));
 
   MI.eraseFromParent();
   return true;
 }
 
 bool AMDGPULegalizerInfo::legalizeFrint(
   MachineInstr &MI, MachineRegisterInfo &MRI,
-  MachineIRBuilder &MIRBuilder) const {
-  MIRBuilder.setInstr(MI);
+  MachineIRBuilder &B) const {
+  B.setInstr(MI);
 
   Register Src = MI.getOperand(1).getReg();
   LLT Ty = MRI.getType(Src);
   assert(Ty.isScalar() && Ty.getSizeInBits() == 64);
 
   APFloat C1Val(APFloat::IEEEdouble(), "0x1.0p+52");
   APFloat C2Val(APFloat::IEEEdouble(), "0x1.fffffffffffffp+51");
 
-  auto C1 = MIRBuilder.buildFConstant(Ty, C1Val);
-  auto CopySign = MIRBuilder.buildFCopysign(Ty, C1, Src);
+  auto C1 = B.buildFConstant(Ty, C1Val);
+  auto CopySign = B.buildFCopysign(Ty, C1, Src);
 
   // TODO: Should this propagate fast-math-flags?
-  auto Tmp1 = MIRBuilder.buildFAdd(Ty, Src, CopySign);
-  auto Tmp2 = MIRBuilder.buildFSub(Ty, Tmp1, CopySign);
+  auto Tmp1 = B.buildFAdd(Ty, Src, CopySign);
+  auto Tmp2 = B.buildFSub(Ty, Tmp1, CopySign);
 
-  auto C2 = MIRBuilder.buildFConstant(Ty, C2Val);
-  auto Fabs = MIRBuilder.buildFAbs(Ty, Src);
+  auto C2 = B.buildFConstant(Ty, C2Val);
+  auto Fabs = B.buildFAbs(Ty, Src);
 
-  auto Cond = MIRBuilder.buildFCmp(CmpInst::FCMP_OGT, LLT::scalar(1), Fabs, C2);
-  MIRBuilder.buildSelect(MI.getOperand(0).getReg(), Cond, Src, Tmp2);
+  auto Cond = B.buildFCmp(CmpInst::FCMP_OGT, LLT::scalar(1), Fabs, C2);
+  B.buildSelect(MI.getOperand(0).getReg(), Cond, Src, Tmp2);
   return true;
 }
 
 bool AMDGPULegalizerInfo::legalizeFceil(
   MachineInstr &MI, MachineRegisterInfo &MRI,
   MachineIRBuilder &B) const {
   B.setInstr(MI);