1 //===-- X86MachineFunctionInfo.cpp - X86 machine function info ------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "X86MachineFunctionInfo.h" 10 #include "X86RegisterInfo.h" 11 #include "llvm/CodeGen/MachineRegisterInfo.h" 12 #include "llvm/CodeGen/TargetSubtargetInfo.h" 13 14 using namespace llvm; 15 16 MachineFunctionInfo *X86MachineFunctionInfo::clone( 17 BumpPtrAllocator &Allocator, MachineFunction &DestMF, 18 const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB) 19 const { 20 return DestMF.cloneInfo<X86MachineFunctionInfo>(*this); 21 } 22 23 void X86MachineFunctionInfo::anchor() { } 24 25 void X86MachineFunctionInfo::setRestoreBasePointer(const MachineFunction *MF) { 26 if (!RestoreBasePointerOffset) { 27 const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>( 28 MF->getSubtarget().getRegisterInfo()); 29 unsigned SlotSize = RegInfo->getSlotSize(); 30 for (const MCPhysReg *CSR = MF->getRegInfo().getCalleeSavedRegs(); 31 unsigned Reg = *CSR; ++CSR) { 32 if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg)) 33 RestoreBasePointerOffset -= SlotSize; 34 } 35 } 36 } 37 38