LLVM  14.0.0git
X86MachineFunctionInfo.cpp
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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 
10 #include "X86RegisterInfo.h"
13 
14 using namespace llvm;
15 
16 void X86MachineFunctionInfo::anchor() { }
17 
19  if (!RestoreBasePointerOffset) {
20  const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>(
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 
llvm
---------------------— PointerInfo ------------------------------------—
Definition: AllocatorList.h:23
Reg
unsigned Reg
Definition: MachineSink.cpp:1566
contains
return AArch64::GPR64RegClass contains(Reg)
llvm::X86MachineFunctionInfo::setRestoreBasePointer
void setRestoreBasePointer(const MachineFunction *MF)
Definition: X86MachineFunctionInfo.cpp:18
llvm::TargetSubtargetInfo::getRegisterInfo
virtual const TargetRegisterInfo * getRegisterInfo() const
getRegisterInfo - If register information is available, return it.
Definition: TargetSubtargetInfo.h:124
MachineRegisterInfo.h
X86MachineFunctionInfo.h
llvm::MachineFunction::getRegInfo
MachineRegisterInfo & getRegInfo()
getRegInfo - Return information about the registers currently in use.
Definition: MachineFunction.h:636
llvm::MachineFunction::getSubtarget
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
Definition: MachineFunction.h:626
llvm::MachineRegisterInfo::getCalleeSavedRegs
const MCPhysReg * getCalleeSavedRegs() const
Returns list of callee saved registers.
Definition: MachineRegisterInfo.cpp:621
llvm::MachineFunction
Definition: MachineFunction.h:230
TargetSubtargetInfo.h
uint16_t
X86RegisterInfo.h
llvm::X86RegisterInfo::getSlotSize
unsigned getSlotSize() const
Definition: X86RegisterInfo.h:146
llvm::X86RegisterInfo
Definition: X86RegisterInfo.h:24