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 anchor()16void X86MachineFunctionInfo::anchor() { } 17 setRestoreBasePointer(const MachineFunction * MF)18void X86MachineFunctionInfo::setRestoreBasePointer(const MachineFunction *MF) { 19 if (!RestoreBasePointerOffset) { 20 const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>( 21 MF->getSubtarget().getRegisterInfo()); 22 unsigned SlotSize = RegInfo->getSlotSize(); 23 for (const MCPhysReg *CSR = MF->getRegInfo().getCalleeSavedRegs(); 24 unsigned Reg = *CSR; ++CSR) { 25 if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg)) 26 RestoreBasePointerOffset -= SlotSize; 27 } 28 } 29 } 30 31