1 //===-- X86MachineFuctionInfo.cpp - X86 machine function info -------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "X86MachineFunctionInfo.h" 11 #include "X86RegisterInfo.h" 12 #include "llvm/Target/TargetSubtargetInfo.h" 13 14 using namespace llvm; 15 16 void X86MachineFunctionInfo::anchor() { } 17 18 void 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 = 24 RegInfo->X86RegisterInfo::getCalleeSavedRegs(MF); 25 unsigned Reg = *CSR; 26 ++CSR) 27 { 28 if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg)) 29 RestoreBasePointerOffset -= SlotSize; 30 } 31 } 32 } 33 34
