AMDGPUInsertSingleUseVDST.cpp File Reference

Insert s_singleuse_vdst instructions on GFX11.5+ to mark regions of VALU instructions that produce single-use VGPR values. More...

#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>

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Macros
#define	DEBUG_TYPE   "amdgpu-insert-single-use-vdst"

Detailed Description

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.

Definition in file AMDGPUInsertSingleUseVDST.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "amdgpu-insert-single-use-vdst"

Definition at line 41 of file AMDGPUInsertSingleUseVDST.cpp.