LLVM  12.0.0git
Public Types | Public Member Functions | Static Public Member Functions | Protected Attributes | List of all members
llvm::AMDGPUSubtarget Class Referenceabstract

#include "Target/AMDGPU/AMDGPUSubtarget.h"

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Public Types

enum  Generation {
  R600 = 0, R700 = 1, EVERGREEN = 2, NORTHERN_ISLANDS = 3,
  SOUTHERN_ISLANDS = 4, SEA_ISLANDS = 5, VOLCANIC_ISLANDS = 6, GFX9 = 7,
  GFX10 = 8
}
 

Public Member Functions

 AMDGPUSubtarget (const Triple &TT)
 
std::pair< unsigned, unsignedgetDefaultFlatWorkGroupSize (CallingConv::ID CC) const
 
std::pair< unsigned, unsignedgetFlatWorkGroupSizes (const Function &F) const
 
std::pair< unsigned, unsignedgetWavesPerEU (const Function &F) const
 
unsigned getMaxLocalMemSizeWithWaveCount (unsigned WaveCount, const Function &) const
 Return the amount of LDS that can be used that will not restrict the occupancy lower than WaveCount. More...
 
unsigned getOccupancyWithLocalMemSize (uint32_t Bytes, const Function &) const
 Inverse of getMaxLocalMemWithWaveCount. More...
 
unsigned getOccupancyWithLocalMemSize (const MachineFunction &MF) const
 
bool isAmdHsaOS () const
 
bool isAmdPalOS () const
 
bool isMesa3DOS () const
 
bool isMesaKernel (const Function &F) const
 
bool isAmdHsaOrMesa (const Function &F) const
 
bool isGCN () const
 
bool has16BitInsts () const
 
bool hasMadMixInsts () const
 
bool hasMadMacF32Insts () const
 
bool hasDsSrc2Insts () const
 
bool hasSDWA () const
 
bool hasVOP3PInsts () const
 
bool hasMulI24 () const
 
bool hasMulU24 () const
 
bool hasInv2PiInlineImm () const
 
bool hasFminFmaxLegacy () const
 
bool hasTrigReducedRange () const
 
bool isPromoteAllocaEnabled () const
 
unsigned getWavefrontSize () const
 
unsigned getWavefrontSizeLog2 () const
 
int getLocalMemorySize () const
 
Align getAlignmentForImplicitArgPtr () const
 
unsigned getExplicitKernelArgOffset (const Function &F) const
 Returns the offset in bytes from the start of the input buffer of the first explicit kernel argument. More...
 
virtual unsigned getMaxWorkGroupsPerCU (unsigned FlatWorkGroupSize) const =0
 
virtual unsigned getMinFlatWorkGroupSize () const =0
 
virtual unsigned getMaxFlatWorkGroupSize () const =0
 
virtual unsigned getWavesPerEUForWorkGroup (unsigned FlatWorkGroupSize) const =0
 
virtual unsigned getMinWavesPerEU () const =0
 
unsigned getMaxWavesPerEU () const
 
bool makeLIDRangeMetadata (Instruction *I) const
 Creates value range metadata on an workitemid.* inrinsic call or load. More...
 
unsigned getImplicitArgNumBytes (const Function &F) const
 
uint64_t getExplicitKernArgSize (const Function &F, Align &MaxAlign) const
 
unsigned getKernArgSegmentSize (const Function &F, Align &MaxAlign) const
 
AMDGPUDwarfFlavour getAMDGPUDwarfFlavour () const
 
virtual ~AMDGPUSubtarget ()
 

Static Public Member Functions

static const AMDGPUSubtargetget (const MachineFunction &MF)
 
static const AMDGPUSubtargetget (const TargetMachine &TM, const Function &F)
 

Protected Attributes

bool Has16BitInsts
 
bool HasMadMixInsts
 
bool HasMadMacF32Insts
 
bool HasDsSrc2Insts
 
bool HasSDWA
 
bool HasVOP3PInsts
 
bool HasMulI24
 
bool HasMulU24
 
bool HasInv2PiInlineImm
 
bool HasFminFmaxLegacy
 
bool EnablePromoteAlloca
 
bool HasTrigReducedRange
 
unsigned MaxWavesPerEU
 
int LocalMemorySize
 
char WavefrontSizeLog2
 

Detailed Description

Definition at line 50 of file AMDGPUSubtarget.h.

Member Enumeration Documentation

◆ Generation

Enumerator
R600 
R700 
EVERGREEN 
NORTHERN_ISLANDS 
SOUTHERN_ISLANDS 
SEA_ISLANDS 
VOLCANIC_ISLANDS 
GFX9 
GFX10 

Definition at line 52 of file AMDGPUSubtarget.h.

Constructor & Destructor Documentation

◆ AMDGPUSubtarget()

AMDGPUSubtarget::AMDGPUSubtarget ( const Triple TT)

Definition at line 152 of file AMDGPUSubtarget.cpp.

◆ ~AMDGPUSubtarget()

virtual llvm::AMDGPUSubtarget::~AMDGPUSubtarget ( )
inlinevirtual

Definition at line 262 of file AMDGPUSubtarget.h.

Member Function Documentation

◆ get() [1/2]

const AMDGPUSubtarget & AMDGPUSubtarget::get ( const MachineFunction MF)
static

◆ get() [2/2]

const AMDGPUSubtarget & AMDGPUSubtarget::get ( const TargetMachine TM,
const Function F 
)
static

◆ getAlignmentForImplicitArgPtr()

Align llvm::AMDGPUSubtarget::getAlignmentForImplicitArgPtr ( ) const
inline

◆ getAMDGPUDwarfFlavour()

AMDGPUDwarfFlavour llvm::AMDGPUSubtarget::getAMDGPUDwarfFlavour ( ) const
inline
Returns
Corresponsing DWARF register number mapping flavour for the WavefrontSize.

Definition at line 257 of file AMDGPUSubtarget.h.

References getWavefrontSize(), llvm::Wave32, and llvm::Wave64.

◆ getDefaultFlatWorkGroupSize()

std::pair< unsigned, unsigned > AMDGPUSubtarget::getDefaultFlatWorkGroupSize ( CallingConv::ID  CC) const

◆ getExplicitKernArgSize()

uint64_t AMDGPUSubtarget::getExplicitKernArgSize ( const Function F,
Align MaxAlign 
) const

◆ getExplicitKernelArgOffset()

unsigned llvm::AMDGPUSubtarget::getExplicitKernelArgOffset ( const Function F) const
inline

◆ getFlatWorkGroupSizes()

std::pair< unsigned, unsigned > AMDGPUSubtarget::getFlatWorkGroupSizes ( const Function F) const
Returns
Subtarget's default pair of minimum/maximum flat work group sizes for function F, or minimum/maximum flat work group sizes explicitly requested using "amdgpu-flat-work-group-size" attribute attached to function F.
Subtarget's default values if explicitly requested values cannot be converted to integer, or violate subtarget's specifications.

Definition at line 376 of file AMDGPUSubtarget.cpp.

References llvm::Default, llvm::Function::getCallingConv(), getDefaultFlatWorkGroupSize(), llvm::AMDGPU::getIntegerPairAttribute(), llvm::GCNSubtarget::getMaxFlatWorkGroupSize(), and llvm::GCNSubtarget::getMinFlatWorkGroupSize().

Referenced by getDSShaderTypeValue(), getMaxLocalMemSizeWithWaveCount(), getOccupancyWithLocalMemSize(), getWavesPerEU(), isCallPromotable(), makeLIDRangeMetadata(), and llvm::SIMachineFunctionInfo::SIMachineFunctionInfo().

◆ getImplicitArgNumBytes()

unsigned llvm::AMDGPUSubtarget::getImplicitArgNumBytes ( const Function F) const
inline
Returns
Number of bytes of arguments that are passed to a shader or kernel in addition to the explicit ones declared for the function.

Definition at line 247 of file AMDGPUSubtarget.h.

References F(), getExplicitKernArgSize(), llvm::AMDGPU::getIntegerAttribute(), getKernArgSegmentSize(), and isMesaKernel().

Referenced by getKernArgSegmentSize().

◆ getKernArgSegmentSize()

unsigned AMDGPUSubtarget::getKernArgSegmentSize ( const Function F,
Align MaxAlign 
) const

◆ getLocalMemorySize()

int llvm::AMDGPUSubtarget::getLocalMemorySize ( ) const
inline

◆ getMaxFlatWorkGroupSize()

virtual unsigned llvm::AMDGPUSubtarget::getMaxFlatWorkGroupSize ( ) const
pure virtual
Returns
Maximum flat work group size supported by the subtarget.

Implemented in llvm::R600Subtarget, and llvm::GCNSubtarget.

Referenced by getExplicitKernelArgOffset().

◆ getMaxLocalMemSizeWithWaveCount()

unsigned AMDGPUSubtarget::getMaxLocalMemSizeWithWaveCount ( unsigned  WaveCount,
const Function F 
) const

Return the amount of LDS that can be used that will not restrict the occupancy lower than WaveCount.

Definition at line 306 of file AMDGPUSubtarget.cpp.

References getFlatWorkGroupSizes(), getLocalMemorySize(), getMaxWavesPerEU(), and llvm::GCNSubtarget::getMaxWorkGroupsPerCU().

Referenced by llvm::GCNSubtarget::dumpCode(), and isCallPromotable().

◆ getMaxWavesPerEU()

unsigned llvm::AMDGPUSubtarget::getMaxWavesPerEU ( ) const
inline
Returns
Maximum number of waves per execution unit supported by the subtarget without any kind of limitation.

Definition at line 240 of file AMDGPUSubtarget.h.

References I, makeLIDRangeMetadata(), and MaxWavesPerEU.

Referenced by llvm::GCNSubtarget::computeOccupancy(), getMaxLocalMemSizeWithWaveCount(), getOccupancyWithLocalMemSize(), llvm::GCNSubtarget::getOccupancyWithNumSGPRs(), llvm::GCNSubtarget::getOccupancyWithNumVGPRs(), getWavesPerEU(), and isCallPromotable().

◆ getMaxWorkGroupsPerCU()

virtual unsigned llvm::AMDGPUSubtarget::getMaxWorkGroupsPerCU ( unsigned  FlatWorkGroupSize) const
pure virtual
Returns
Maximum number of work groups per compute unit supported by the subtarget and limited by given FlatWorkGroupSize.

Implemented in llvm::R600Subtarget, and llvm::GCNSubtarget.

Referenced by getExplicitKernelArgOffset().

◆ getMinFlatWorkGroupSize()

virtual unsigned llvm::AMDGPUSubtarget::getMinFlatWorkGroupSize ( ) const
pure virtual
Returns
Minimum flat work group size supported by the subtarget.

Implemented in llvm::R600Subtarget, and llvm::GCNSubtarget.

Referenced by getExplicitKernelArgOffset().

◆ getMinWavesPerEU()

virtual unsigned llvm::AMDGPUSubtarget::getMinWavesPerEU ( ) const
pure virtual
Returns
Minimum number of waves per execution unit supported by the subtarget.

Implemented in llvm::R600Subtarget, and llvm::GCNSubtarget.

Referenced by getExplicitKernelArgOffset().

◆ getOccupancyWithLocalMemSize() [1/2]

unsigned AMDGPUSubtarget::getOccupancyWithLocalMemSize ( uint32_t  Bytes,
const Function F 
) const

◆ getOccupancyWithLocalMemSize() [2/2]

unsigned AMDGPUSubtarget::getOccupancyWithLocalMemSize ( const MachineFunction MF) const

◆ getWavefrontSize()

unsigned llvm::AMDGPUSubtarget::getWavefrontSize ( ) const
inline

◆ getWavefrontSizeLog2()

unsigned llvm::AMDGPUSubtarget::getWavefrontSizeLog2 ( ) const
inline

◆ getWavesPerEU()

std::pair< unsigned, unsigned > AMDGPUSubtarget::getWavesPerEU ( const Function F) const
Returns
Subtarget's default pair of minimum/maximum number of waves per execution unit for function F, or minimum/maximum number of waves per execution unit explicitly requested using "amdgpu-waves-per-eu" attribute attached to function F.
Subtarget's default values if explicitly requested values cannot be converted to integer, violate subtarget's specifications, or are not compatible with minimum/maximum number of waves limited by flat work group size, register usage, and/or lds usage.

Definition at line 399 of file AMDGPUSubtarget.cpp.

References llvm::Default, getFlatWorkGroupSizes(), llvm::AMDGPU::getIntegerPairAttribute(), getMaxWavesPerEU(), llvm::GCNSubtarget::getMinWavesPerEU(), llvm::GCNSubtarget::getWavesPerEUForWorkGroup(), and llvm::Function::hasFnAttribute().

Referenced by isCallPromotable(), and llvm::SIMachineFunctionInfo::SIMachineFunctionInfo().

◆ getWavesPerEUForWorkGroup()

virtual unsigned llvm::AMDGPUSubtarget::getWavesPerEUForWorkGroup ( unsigned  FlatWorkGroupSize) const
pure virtual
Returns
Number of waves per execution unit required to support the given FlatWorkGroupSize.

Implemented in llvm::R600Subtarget, and llvm::GCNSubtarget.

Referenced by getExplicitKernelArgOffset().

◆ has16BitInsts()

bool llvm::AMDGPUSubtarget::has16BitInsts ( ) const
inline

◆ hasDsSrc2Insts()

bool llvm::AMDGPUSubtarget::hasDsSrc2Insts ( ) const
inline

Definition at line 161 of file AMDGPUSubtarget.h.

References HasDsSrc2Insts.

◆ hasFminFmaxLegacy()

bool llvm::AMDGPUSubtarget::hasFminFmaxLegacy ( ) const
inline

◆ hasInv2PiInlineImm()

bool llvm::AMDGPUSubtarget::hasInv2PiInlineImm ( ) const
inline

◆ hasMadMacF32Insts()

bool llvm::AMDGPUSubtarget::hasMadMacF32Insts ( ) const
inline

◆ hasMadMixInsts()

bool llvm::AMDGPUSubtarget::hasMadMixInsts ( ) const
inline

Definition at line 153 of file AMDGPUSubtarget.h.

References HasMadMixInsts.

Referenced by llvm::SITargetLowering::isFPExtFoldable().

◆ hasMulI24()

bool llvm::AMDGPUSubtarget::hasMulI24 ( ) const
inline

◆ hasMulU24()

bool llvm::AMDGPUSubtarget::hasMulU24 ( ) const
inline

◆ hasSDWA()

bool llvm::AMDGPUSubtarget::hasSDWA ( ) const
inline

◆ hasTrigReducedRange()

bool llvm::AMDGPUSubtarget::hasTrigReducedRange ( ) const
inline

Definition at line 189 of file AMDGPUSubtarget.h.

References HasTrigReducedRange.

Referenced by getSPDenormModeValue().

◆ hasVOP3PInsts()

bool llvm::AMDGPUSubtarget::hasVOP3PInsts ( ) const
inline

◆ isAmdHsaOrMesa()

bool llvm::AMDGPUSubtarget::isAmdHsaOrMesa ( const Function F) const
inline

◆ isAmdHsaOS()

bool llvm::AMDGPUSubtarget::isAmdHsaOS ( ) const
inline

◆ isAmdPalOS()

bool llvm::AMDGPUSubtarget::isAmdPalOS ( ) const
inline

◆ isGCN()

bool llvm::AMDGPUSubtarget::isGCN ( ) const
inline

Definition at line 145 of file AMDGPUSubtarget.h.

References llvm::Triple::amdgcn, and llvm::Triple::getArch().

Referenced by hasMadMacF32Insts().

◆ isMesa3DOS()

bool llvm::AMDGPUSubtarget::isMesa3DOS ( ) const
inline

◆ isMesaKernel()

bool llvm::AMDGPUSubtarget::isMesaKernel ( const Function F) const
inline

◆ isPromoteAllocaEnabled()

bool llvm::AMDGPUSubtarget::isPromoteAllocaEnabled ( ) const
inline

Definition at line 193 of file AMDGPUSubtarget.h.

References EnablePromoteAlloca.

Referenced by isCallPromotable().

◆ makeLIDRangeMetadata()

bool AMDGPUSubtarget::makeLIDRangeMetadata ( Instruction I) const

Creates value range metadata on an workitemid.* inrinsic call or load.

Definition at line 439 of file AMDGPUSubtarget.cpp.

References F(), getFlatWorkGroupSizes(), llvm::Function::getIntrinsicID(), llvm::Instruction::getParent(), llvm::BasicBlock::getParent(), if(), and LLVM_FALLTHROUGH.

Referenced by getMaxWavesPerEU(), and INITIALIZE_PASS().

Member Data Documentation

◆ EnablePromoteAlloca

bool llvm::AMDGPUSubtarget::EnablePromoteAlloca
protected

Definition at line 78 of file AMDGPUSubtarget.h.

Referenced by isPromoteAllocaEnabled().

◆ Has16BitInsts

bool llvm::AMDGPUSubtarget::Has16BitInsts
protected

Definition at line 68 of file AMDGPUSubtarget.h.

Referenced by has16BitInsts().

◆ HasDsSrc2Insts

bool llvm::AMDGPUSubtarget::HasDsSrc2Insts
protected

Definition at line 71 of file AMDGPUSubtarget.h.

Referenced by hasDsSrc2Insts().

◆ HasFminFmaxLegacy

bool llvm::AMDGPUSubtarget::HasFminFmaxLegacy
protected

◆ HasInv2PiInlineImm

bool llvm::AMDGPUSubtarget::HasInv2PiInlineImm
protected

Definition at line 76 of file AMDGPUSubtarget.h.

Referenced by hasInv2PiInlineImm().

◆ HasMadMacF32Insts

bool llvm::AMDGPUSubtarget::HasMadMacF32Insts
protected

Definition at line 70 of file AMDGPUSubtarget.h.

◆ HasMadMixInsts

bool llvm::AMDGPUSubtarget::HasMadMixInsts
protected

Definition at line 69 of file AMDGPUSubtarget.h.

Referenced by hasMadMixInsts().

◆ HasMulI24

bool llvm::AMDGPUSubtarget::HasMulI24
protected

◆ HasMulU24

bool llvm::AMDGPUSubtarget::HasMulU24
protected

◆ HasSDWA

bool llvm::AMDGPUSubtarget::HasSDWA
protected

Definition at line 72 of file AMDGPUSubtarget.h.

Referenced by hasSDWA().

◆ HasTrigReducedRange

bool llvm::AMDGPUSubtarget::HasTrigReducedRange
protected

Definition at line 79 of file AMDGPUSubtarget.h.

Referenced by hasTrigReducedRange().

◆ HasVOP3PInsts

bool llvm::AMDGPUSubtarget::HasVOP3PInsts
protected

Definition at line 73 of file AMDGPUSubtarget.h.

Referenced by hasVOP3PInsts().

◆ LocalMemorySize

int llvm::AMDGPUSubtarget::LocalMemorySize
protected

◆ MaxWavesPerEU

unsigned llvm::AMDGPUSubtarget::MaxWavesPerEU
protected

Definition at line 80 of file AMDGPUSubtarget.h.

Referenced by llvm::GCNSubtarget::GCNSubtarget(), and getMaxWavesPerEU().

◆ WavefrontSizeLog2

char llvm::AMDGPUSubtarget::WavefrontSizeLog2
protected

The documentation for this class was generated from the following files: