03d07e181d
When the range of the unconditional branch is overflow, the indirect branch way is used. The case when there is no scavenged register for indirect branch needs to spill register to stack. Reviewed By: SixWeining, wangleiat Differential Revision: https://reviews.llvm.org/D137821
69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
//=- LoongArchMachineFunctionInfo.h - LoongArch machine function info -----===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares LoongArch-specific per-machine-function information.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHMACHINEFUNCTIONINFO_H
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#define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHMACHINEFUNCTIONINFO_H
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#include "LoongArchSubtarget.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineFunction.h"
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namespace llvm {
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/// LoongArchMachineFunctionInfo - This class is derived from
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/// MachineFunctionInfo and contains private LoongArch-specific information for
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/// each MachineFunction.
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class LoongArchMachineFunctionInfo : public MachineFunctionInfo {
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private:
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/// FrameIndex for start of varargs area
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int VarArgsFrameIndex = 0;
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/// Size of the save area used for varargs
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int VarArgsSaveSize = 0;
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/// Size of stack frame to save callee saved registers
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unsigned CalleeSavedStackSize = 0;
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/// FrameIndex of the spill slot when there is no scavenged register in
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/// insertIndirectBranch.
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int BranchRelaxationSpillFrameIndex = -1;
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public:
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LoongArchMachineFunctionInfo(const MachineFunction &MF) {}
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MachineFunctionInfo *
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clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
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const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
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const override {
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return DestMF.cloneInfo<LoongArchMachineFunctionInfo>(*this);
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}
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int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
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void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
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unsigned getVarArgsSaveSize() const { return VarArgsSaveSize; }
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void setVarArgsSaveSize(int Size) { VarArgsSaveSize = Size; }
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unsigned getCalleeSavedStackSize() const { return CalleeSavedStackSize; }
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void setCalleeSavedStackSize(unsigned Size) { CalleeSavedStackSize = Size; }
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int getBranchRelaxationSpillFrameIndex() {
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return BranchRelaxationSpillFrameIndex;
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}
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void setBranchRelaxationSpillFrameIndex(int Index) {
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BranchRelaxationSpillFrameIndex = Index;
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}
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHMACHINEFUNCTIONINFO_H
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