llvm/llvm/lib/Target/AMDGPU/AMDGPUInsertSingleUseVDST.cpp

//===- AMDGPUInsertSingleUseVDST.cpp - Insert s_singleuse_vdst instructions ==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
/// Insert s_singleuse_vdst instructions on GFX11.5+ to mark regions of VALU
/// instructions that produce single-use VGPR values. If the value is forwarded
/// to the consumer instruction prior to VGPR writeback, the hardware can
/// then skip (kill) the VGPR write.
//
//===----------------------------------------------------------------------===//

#include "AMDGPU.h"
#include "AMDGPUGenSearchableTables.inc"
#include "GCNSubtarget.h"
#include "SIInstrInfo.h"
#include "SIRegisterInfo.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/Register.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/MC/MCRegister.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/Pass.h"
#include <array>

usingnamespacellvm;

#define DEBUG_TYPE …

namespace {
class AMDGPUInsertSingleUseVDST : public MachineFunctionPass { … };
} // namespace

char AMDGPUInsertSingleUseVDST::ID = …;

char &llvm::AMDGPUInsertSingleUseVDSTID = …;

INITIALIZE_PASS(…)