1*81ad6265SDimitry Andric //===-- SPIRVFrameLowering.h - Define frame lowering for SPIR-V -*- C++-*--===// 2*81ad6265SDimitry Andric // 3*81ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*81ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*81ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*81ad6265SDimitry Andric // 7*81ad6265SDimitry Andric //===----------------------------------------------------------------------===// 8*81ad6265SDimitry Andric // 9*81ad6265SDimitry Andric // This class implements SPIRV-specific bits of TargetFrameLowering class. 10*81ad6265SDimitry Andric // The target uses only virtual registers. It does not operate with stack frame 11*81ad6265SDimitry Andric // explicitly and does not generate prologues/epilogues of functions. 12*81ad6265SDimitry Andric // As a result, we are not required to implemented the frame lowering 13*81ad6265SDimitry Andric // functionality substantially. 14*81ad6265SDimitry Andric // 15*81ad6265SDimitry Andric //===----------------------------------------------------------------------===// 16*81ad6265SDimitry Andric 17*81ad6265SDimitry Andric #ifndef LLVM_LIB_TARGET_SPIRV_SPIRVFRAMELOWERING_H 18*81ad6265SDimitry Andric #define LLVM_LIB_TARGET_SPIRV_SPIRVFRAMELOWERING_H 19*81ad6265SDimitry Andric 20*81ad6265SDimitry Andric #include "llvm/CodeGen/TargetFrameLowering.h" 21*81ad6265SDimitry Andric #include "llvm/Support/Alignment.h" 22*81ad6265SDimitry Andric 23*81ad6265SDimitry Andric namespace llvm { 24*81ad6265SDimitry Andric class SPIRVSubtarget; 25*81ad6265SDimitry Andric 26*81ad6265SDimitry Andric class SPIRVFrameLowering : public TargetFrameLowering { 27*81ad6265SDimitry Andric public: SPIRVFrameLowering(const SPIRVSubtarget & sti)28*81ad6265SDimitry Andric explicit SPIRVFrameLowering(const SPIRVSubtarget &sti) 29*81ad6265SDimitry Andric : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(8), 0) {} 30*81ad6265SDimitry Andric emitPrologue(MachineFunction & MF,MachineBasicBlock & MBB)31*81ad6265SDimitry Andric void emitPrologue(MachineFunction &MF, 32*81ad6265SDimitry Andric MachineBasicBlock &MBB) const override {} emitEpilogue(MachineFunction & MF,MachineBasicBlock & MBB)33*81ad6265SDimitry Andric void emitEpilogue(MachineFunction &MF, 34*81ad6265SDimitry Andric MachineBasicBlock &MBB) const override {} 35*81ad6265SDimitry Andric hasFP(const MachineFunction & MF)36*81ad6265SDimitry Andric bool hasFP(const MachineFunction &MF) const override { return false; } 37*81ad6265SDimitry Andric }; 38*81ad6265SDimitry Andric } // namespace llvm 39*81ad6265SDimitry Andric #endif // LLVM_LIB_TARGET_SPIRV_SPIRVFRAMELOWERING_H 40