LLVM 19.0.0git
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
14using namespace llvm;
15
17 BumpPtrAllocator &Allocator, MachineFunction &DestMF,
19 const {
20 return DestMF.cloneInfo<X86MachineFunctionInfo>(*this);
21}
22
23void X86MachineFunctionInfo::anchor() { }
24
26 if (!RestoreBasePointerOffset) {
27 const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>(
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
static bool contains(SmallPtrSetImpl< ConstantExpr * > &Cache, ConstantExpr *Expr, Constant *C)
Definition: Value.cpp:469
Allocate memory in an ever growing pool, as if by bump-pointer.
Definition: Allocator.h:66
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
MachineRegisterInfo & getRegInfo()
getRegInfo - Return information about the registers currently in use.
Ty * cloneInfo(const Ty &Old)
const MCPhysReg * getCalleeSavedRegs() const
Returns list of callee saved registers.
virtual const TargetRegisterInfo * getRegisterInfo() const
getRegisterInfo - If register information is available, return it.
X86MachineFunctionInfo - This class is derived from MachineFunction and contains private X86 target-s...
void setRestoreBasePointer(const MachineFunction *MF)
MachineFunctionInfo * clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF, const DenseMap< MachineBasicBlock *, MachineBasicBlock * > &Src2DstMBB) const override
Make a functionally equivalent copy of this MachineFunctionInfo in MF.
unsigned getSlotSize() const
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
MachineFunctionInfo - This class can be derived from and used by targets to hold private target-speci...