| 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>(Old: *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 |