GCNPreRAAntiHints.cpp File Reference

Insert register allocation anti-hints. More...

#include "GCNPreRAAntiHints.h"
#include "GCNSubtarget.h"
#include "SIInstrInfo.h"
#include "SIRegisterInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/LiveIntervals.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SlotIndexes.h"
#include "llvm/CodeGen/TargetSchedule.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "amdgpu-anti-hints"

Enumerations
enum class	AntiHintRule {   None , MFMAWAW , MFMAWAR , WMMAWARAB ,   SWMMACWARIndex , WMMAWAW , TransWAR , MemAddrWAR ,   VAVdstWAR , All }

Variables
static cl::list< AntiHintRule >	AntiHintRuleSelection ("amdgpu-anti-hints-rules", cl::Hidden, cl::CommaSeparated, cl::desc("Anti-hints rules to select."), cl::values(clEnumValN(AntiHintRule::None, "none", "Select no rules"), clEnumValN(AntiHintRule::MFMAWAW, "mfma-waw", "MFMA destination write-after-write"), clEnumValN(AntiHintRule::MFMAWAR, "mfma-war", "XDL MFMA src2 write-after-read"), clEnumValN(AntiHintRule::WMMAWARAB, "wmma-war-ab", "XDL WMMA A/B source write-after-read"), clEnumValN(AntiHintRule::SWMMACWARIndex, "swmmac-war-index", "XDL SWMMAC sparse index write-after-read"), clEnumValN(AntiHintRule::WMMAWAW, "wmma-waw", "XDL WMMA destination write-after-write"), clEnumValN(AntiHintRule::TransWAR, "trans-war", "TRANS source write-after-read"), clEnumValN(AntiHintRule::MemAddrWAR, "mem-addr-war", "Memory address/data write-after-read (s_wait_xcnt)"), clEnumValN(AntiHintRule::VAVdstWAR, "va-vdst-war", "VALU source write-after-read by a load " "(s_wait_alu va_vdst)"), clEnumValN(AntiHintRule::All, "all", "Select all rules (default); per-rule " "-amdgpu-anti-hints-for-* still apply")))
static cl::opt< bool >	EnableAntiHintsForAddr ("amdgpu-anti-hints-for-addr", cl::Hidden, cl::desc("Enable Anti-Hints for memory address " "operands and subsequent VGPR writes to " "avoid wait xcnt."), cl::init(true))
static cl::opt< bool >	EnableAntiHintsForVAVdst ("amdgpu-anti-hints-for-va-vdst", cl::Hidden, cl::desc("Enable Anti-Hints for VA-VDST."), cl::init(false))
static cl::opt< unsigned >	VAVDSTLookbackWindow ("amdgpu-va-vdst-lookback-window", cl::Hidden, cl::desc("Lookback window for VA_VDST anti-hints."), cl::init(32))
static cl::opt< unsigned >	AddrAntiHintWindow ("amdgpu-addr-anti-hint-window", cl::Hidden, cl::desc("Number of later memory instructions an " "address anti-hint stays open."), cl::init(16))

Detailed Description

Insert register allocation anti-hints.

Definition in file GCNPreRAAntiHints.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "amdgpu-anti-hints"

Definition at line 27 of file GCNPreRAAntiHints.cpp.

Enumeration Type Documentation

AntiHintRule

enum class AntiHintRule

strong

Enumerator
None
MFMAWAW
MFMAWAR
WMMAWARAB
SWMMACWARIndex
WMMAWAW
TransWAR
MemAddrWAR
VAVdstWAR
All

Definition at line 31 of file GCNPreRAAntiHints.cpp.

Variable Documentation

AddrAntiHintWindow

cl::opt< unsigned > AddrAntiHintWindow("amdgpu-addr-anti-hint-window", cl::Hidden, cl::desc("Number of later memory instructions an " "address anti-hint stays open."), cl::init(16)) ( "amdgpu-addr-anti-hint-window" , cl::Hidden , cl::desc("Number of later memory instructions an " "address anti-hint stays open.") , cl::init(16)  )

static

AntiHintRuleSelection

cl::list< AntiHintRule > AntiHintRuleSelection("amdgpu-anti-hints-rules", cl::Hidden, cl::CommaSeparated, cl::desc("Anti-hints rules to select."), cl::values(clEnumValN(AntiHintRule::None, "none", "Select no rules"), clEnumValN(AntiHintRule::MFMAWAW, "mfma-waw", "MFMA destination write-after-write"), clEnumValN(AntiHintRule::MFMAWAR, "mfma-war", "XDL MFMA src2 write-after-read"), clEnumValN(AntiHintRule::WMMAWARAB, "wmma-war-ab", "XDL WMMA A/B source write-after-read"), clEnumValN(AntiHintRule::SWMMACWARIndex, "swmmac-war-index", "XDL SWMMAC sparse index write-after-read"), clEnumValN(AntiHintRule::WMMAWAW, "wmma-waw", "XDL WMMA destination write-after-write"), clEnumValN(AntiHintRule::TransWAR, "trans-war", "TRANS source write-after-read"), clEnumValN(AntiHintRule::MemAddrWAR, "mem-addr-war", "Memory address/data write-after-read (s_wait_xcnt)"), clEnumValN(AntiHintRule::VAVdstWAR, "va-vdst-war", "VALU source write-after-read by a load " "(s_wait_alu va_vdst)"), clEnumValN(AntiHintRule::All, "all", "Select all rules (default); per-rule " "-amdgpu-anti-hints-for-* still apply"))) ( "amdgpu-anti-hints-rules" , cl::Hidden , cl::CommaSeparated , cl::desc("Anti-hints rules to select.") , cl::values(clEnumValN(AntiHintRule::None, "none", "Select no rules"), clEnumValN(AntiHintRule::MFMAWAW, "mfma-waw", "MFMA destination write-after-write"), clEnumValN(AntiHintRule::MFMAWAR, "mfma-war", "XDL MFMA src2 write-after-read"), clEnumValN(AntiHintRule::WMMAWARAB, "wmma-war-ab", "XDL WMMA A/B source write-after-read"), clEnumValN(AntiHintRule::SWMMACWARIndex, "swmmac-war-index", "XDL SWMMAC sparse index write-after-read"), clEnumValN(AntiHintRule::WMMAWAW, "wmma-waw", "XDL WMMA destination write-after-write"), clEnumValN(AntiHintRule::TransWAR, "trans-war", "TRANS source write-after-read"), clEnumValN(AntiHintRule::MemAddrWAR, "mem-addr-war", "Memory address/data write-after-read (s_wait_xcnt)"), clEnumValN(AntiHintRule::VAVdstWAR, "va-vdst-war", "VALU source write-after-read by a load " "(s_wait_alu va_vdst)"), clEnumValN(AntiHintRule::All, "all", "Select all rules (default); per-rule " "-amdgpu-anti-hints-for-* still apply"))  )

static

EnableAntiHintsForAddr

cl::opt< bool > EnableAntiHintsForAddr("amdgpu-anti-hints-for-addr", cl::Hidden, cl::desc("Enable Anti-Hints for memory address " "operands and subsequent VGPR writes to " "avoid wait xcnt."), cl::init(true)) ( "amdgpu-anti-hints-for-addr" , cl::Hidden , cl::desc("Enable Anti-Hints for memory address " "operands and subsequent VGPR writes to " "avoid wait xcnt.") , cl::init(true)  )

static

EnableAntiHintsForVAVdst

cl::opt< bool > EnableAntiHintsForVAVdst("amdgpu-anti-hints-for-va-vdst", cl::Hidden, cl::desc("Enable Anti-Hints for VA-VDST."), cl::init(false)) ( "amdgpu-anti-hints-for-va-vdst" , cl::Hidden , cl::desc("Enable Anti-Hints for VA-VDST.") , cl::init(false)  )

static

VAVDSTLookbackWindow

cl::opt< unsigned > VAVDSTLookbackWindow("amdgpu-va-vdst-lookback-window", cl::Hidden, cl::desc("Lookback window for VA_VDST anti-hints."), cl::init(32)) ( "amdgpu-va-vdst-lookback-window" , cl::Hidden , cl::desc("Lookback window for VA_VDST anti-hints.") , cl::init(32)  )

static