Classes
class	AMDGPUTargetID

Enumerations
enum	{ FIXED_NUM_SGPRS_FOR_INIT_BUG = 96 , TRAP_NUM_SGPRS = 16 }

enum class	TargetIDSetting { Unsupported , Any , Off , On }

Functions
static TargetIDSetting	getTargetIDSettingFromFeatureString (StringRef FeatureString)

unsigned	getWavefrontSize (const MCSubtargetInfo *STI)

unsigned	getLocalMemorySize (const MCSubtargetInfo *STI)

unsigned	getAddressableLocalMemorySize (const MCSubtargetInfo *STI)

unsigned	getEUsPerCU (const MCSubtargetInfo *STI)

unsigned	getMaxWorkGroupsPerCU (const MCSubtargetInfo *STI, unsigned FlatWorkGroupSize)

unsigned	getMinWavesPerEU (const MCSubtargetInfo *STI)

unsigned	getMaxWavesPerEU (const MCSubtargetInfo *STI)

unsigned	getWavesPerEUForWorkGroup (const MCSubtargetInfo *STI, unsigned FlatWorkGroupSize)

unsigned	getMinFlatWorkGroupSize (const MCSubtargetInfo *STI)

unsigned	getMaxFlatWorkGroupSize (const MCSubtargetInfo *STI)

unsigned	getWavesPerWorkGroup (const MCSubtargetInfo *STI, unsigned FlatWorkGroupSize)

unsigned	getSGPRAllocGranule (const MCSubtargetInfo *STI)

unsigned	getSGPREncodingGranule (const MCSubtargetInfo *STI)

unsigned	getTotalNumSGPRs (const MCSubtargetInfo *STI)

unsigned	getAddressableNumSGPRs (const MCSubtargetInfo *STI)

unsigned	getMinNumSGPRs (const MCSubtargetInfo *STI, unsigned WavesPerEU)

unsigned	getMaxNumSGPRs (const MCSubtargetInfo *STI, unsigned WavesPerEU, bool Addressable)

unsigned	getNumExtraSGPRs (const MCSubtargetInfo *STI, bool VCCUsed, bool FlatScrUsed, bool XNACKUsed)

unsigned	getNumExtraSGPRs (const MCSubtargetInfo *STI, bool VCCUsed, bool FlatScrUsed)

unsigned	getNumSGPRBlocks (const MCSubtargetInfo *STI, unsigned NumSGPRs)

unsigned	getVGPRAllocGranule (const MCSubtargetInfo *STI, std::optional< bool > EnableWavefrontSize32)

unsigned	getVGPREncodingGranule (const MCSubtargetInfo *STI, std::optional< bool > EnableWavefrontSize32)

unsigned	getTotalNumVGPRs (const MCSubtargetInfo *STI)

unsigned	getAddressableNumVGPRs (const MCSubtargetInfo *STI)

unsigned	getNumWavesPerEUWithNumVGPRs (const MCSubtargetInfo *STI, unsigned NumVGPRs)

unsigned	getMinNumVGPRs (const MCSubtargetInfo *STI, unsigned WavesPerEU)

unsigned	getMaxNumVGPRs (const MCSubtargetInfo *STI, unsigned WavesPerEU)

unsigned	getNumVGPRBlocks (const MCSubtargetInfo *STI, unsigned NumVGPRs, std::optional< bool > EnableWavefrontSize32)

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
FIXED_NUM_SGPRS_FOR_INIT_BUG
TRAP_NUM_SGPRS

Definition at line 105 of file AMDGPUBaseInfo.h.

◆ TargetIDSetting

enum class llvm::AMDGPU::IsaInfo::TargetIDSetting

strong

Enumerator
Unsupported
Any
Off
On

Definition at line 112 of file AMDGPUBaseInfo.h.

Function Documentation

◆ getAddressableLocalMemorySize()

unsigned llvm::AMDGPU::IsaInfo::getAddressableLocalMemorySize ( const MCSubtargetInfo * STI )

Returns: Maximum addressable local memory size in bytes for given subtarget STI.

Definition at line 835 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), and llvm::FeatureBitset::test().

◆ getAddressableNumSGPRs()

unsigned llvm::AMDGPU::IsaInfo::getAddressableNumSGPRs ( const MCSubtargetInfo * STI )

Returns: Addressable number of SGPRs for given subtarget STI.

Definition at line 926 of file AMDGPUBaseInfo.cpp.

References FIXED_NUM_SGPRS_FOR_INIT_BUG, llvm::MCSubtargetInfo::getCPU(), llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::getIsaVersion(), and llvm::FeatureBitset::test().

Referenced by llvm::GCNSubtarget::getAddressableNumSGPRs(), getMaxNumSGPRs(), getMinNumSGPRs(), and getSGPRAllocGranule().

◆ getAddressableNumVGPRs()

unsigned llvm::AMDGPU::IsaInfo::getAddressableNumVGPRs ( const MCSubtargetInfo * STI )

Returns: Addressable number of VGPRs for given subtarget STI.

Definition at line 1050 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), and llvm::FeatureBitset::test().

Referenced by llvm::GCNSubtarget::getAddressableNumVGPRs(), getMaxNumVGPRs(), getMinNumVGPRs(), and llvm::GCNSchedStrategy::initialize().

◆ getEUsPerCU()

unsigned llvm::AMDGPU::IsaInfo::getEUsPerCU ( const MCSubtargetInfo * STI )

Returns: Number of execution units per compute unit for given subtarget STI.

Definition at line 843 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::isGFX10Plus(), and llvm::FeatureBitset::test().

Referenced by llvm::GCNSubtarget::GCNSubtarget(), getMaxWorkGroupsPerCU(), and getWavesPerEUForWorkGroup().

◆ getLocalMemorySize()

unsigned llvm::AMDGPU::IsaInfo::getLocalMemorySize ( const MCSubtargetInfo * STI )

Returns: Local memory size in bytes for given subtarget STI.

Definition at line 819 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::isGFX10Plus(), and llvm::FeatureBitset::test().

◆ getMaxFlatWorkGroupSize()

unsigned llvm::AMDGPU::IsaInfo::getMaxFlatWorkGroupSize ( const MCSubtargetInfo * STI )

Returns: Maximum flat work group size for given subtarget STI.

Definition at line 896 of file AMDGPUBaseInfo.cpp.

Referenced by llvm::GCNSubtarget::getMaxFlatWorkGroupSize(), and llvm::R600Subtarget::getMaxFlatWorkGroupSize().

◆ getMaxNumSGPRs()

unsigned llvm::AMDGPU::IsaInfo::getMaxNumSGPRs	(	const MCSubtargetInfo *	STI,
		unsigned	WavesPerEU,
		bool	Addressable
	)

Returns: Maximum number of SGPRs that meets the given number of waves per execution unit requirement for given subtarget STI.

Definition at line 955 of file AMDGPUBaseInfo.cpp.

References llvm::alignDown(), assert(), getAddressableNumSGPRs(), llvm::MCSubtargetInfo::getCPU(), llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::getIsaVersion(), getSGPRAllocGranule(), getTotalNumSGPRs(), llvm::FeatureBitset::test(), and TRAP_NUM_SGPRS.

Referenced by llvm::GCNSubtarget::getMaxNumSGPRs().

◆ getMaxNumVGPRs()

unsigned llvm::AMDGPU::IsaInfo::getMaxNumVGPRs	(	const MCSubtargetInfo *	STI,
		unsigned	WavesPerEU
	)

Returns: Maximum number of VGPRs that meets given number of waves per execution unit requirement for given subtarget STI.

Definition at line 1090 of file AMDGPUBaseInfo.cpp.

References llvm::alignDown(), assert(), getAddressableNumVGPRs(), getTotalNumVGPRs(), and getVGPRAllocGranule().

Referenced by llvm::GCNSubtarget::getMaxNumVGPRs().

◆ getMaxWavesPerEU()

unsigned llvm::AMDGPU::IsaInfo::getMaxWavesPerEU ( const MCSubtargetInfo * STI )

Returns: Maximum number of waves per execution unit for given subtarget STI without any kind of limitation.

Definition at line 877 of file AMDGPUBaseInfo.cpp.

References llvm::AMDGPU::hasGFX10_3Insts(), llvm::AMDGPU::isGFX10Plus(), and llvm::AMDGPU::isGFX90A().

Referenced by llvm::GCNSubtarget::GCNSubtarget(), getMaxWorkGroupsPerCU(), getMinNumSGPRs(), getMinNumVGPRs(), and getNumWavesPerEUWithNumVGPRs().

◆ getMaxWorkGroupsPerCU()

unsigned llvm::AMDGPU::IsaInfo::getMaxWorkGroupsPerCU	(	const MCSubtargetInfo *	STI,
		unsigned	FlatWorkGroupSize
	)

Returns: Maximum number of work groups per compute unit for given subtarget STI and limited by given FlatWorkGroupSize.

Definition at line 854 of file AMDGPUBaseInfo.cpp.

References llvm::Triple::amdgcn, assert(), llvm::Triple::getArch(), getEUsPerCU(), llvm::MCSubtargetInfo::getFeatureBits(), getMaxWavesPerEU(), llvm::MCSubtargetInfo::getTargetTriple(), getWavesPerWorkGroup(), llvm::AMDGPU::isGFX10Plus(), N, and llvm::FeatureBitset::test().

Referenced by llvm::GCNSubtarget::getMaxWorkGroupsPerCU(), and llvm::R600Subtarget::getMaxWorkGroupsPerCU().

◆ getMinFlatWorkGroupSize()

unsigned llvm::AMDGPU::IsaInfo::getMinFlatWorkGroupSize ( const MCSubtargetInfo * STI )

Returns: Minimum flat work group size for given subtarget STI.

Definition at line 892 of file AMDGPUBaseInfo.cpp.

Referenced by llvm::GCNSubtarget::getMinFlatWorkGroupSize(), and llvm::R600Subtarget::getMinFlatWorkGroupSize().

◆ getMinNumSGPRs()

unsigned llvm::AMDGPU::IsaInfo::getMinNumSGPRs	(	const MCSubtargetInfo *	STI,
		unsigned	WavesPerEU
	)

Returns: Minimum number of SGPRs that meets the given number of waves per execution unit requirement for given subtarget STI.

Definition at line 938 of file AMDGPUBaseInfo.cpp.

References llvm::alignDown(), assert(), getAddressableNumSGPRs(), llvm::MCSubtargetInfo::getCPU(), llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::getIsaVersion(), getMaxWavesPerEU(), getSGPRAllocGranule(), getTotalNumSGPRs(), llvm::FeatureBitset::test(), and TRAP_NUM_SGPRS.

Referenced by llvm::GCNSubtarget::getMinNumSGPRs().

◆ getMinNumVGPRs()

unsigned llvm::AMDGPU::IsaInfo::getMinNumVGPRs	(	const MCSubtargetInfo *	STI,
		unsigned	WavesPerEU
	)

Returns: Minimum number of VGPRs that meets given number of waves per execution unit requirement for given subtarget STI.

Definition at line 1066 of file AMDGPUBaseInfo.cpp.

References llvm::alignDown(), assert(), getAddressableNumVGPRs(), getMaxWavesPerEU(), getMinNumVGPRs(), getNumWavesPerEUWithNumVGPRs(), getTotalNumVGPRs(), and getVGPRAllocGranule().

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

◆ getMinWavesPerEU()

unsigned llvm::AMDGPU::IsaInfo::getMinWavesPerEU ( const MCSubtargetInfo * STI )

Returns: Minimum number of waves per execution unit for given subtarget STI.

Definition at line 873 of file AMDGPUBaseInfo.cpp.

Referenced by llvm::GCNSubtarget::getMinWavesPerEU(), and llvm::R600Subtarget::getMinWavesPerEU().

◆ getNumExtraSGPRs() [1/2]

unsigned llvm::AMDGPU::IsaInfo::getNumExtraSGPRs	(	const MCSubtargetInfo *	STI,
		bool	VCCUsed,
		bool	FlatScrUsed
	)

Returns: Number of extra SGPRs implicitly required by given subtarget STI when the given special registers are used. XNACK is inferred from STI.

Definition at line 997 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), getNumExtraSGPRs(), and llvm::FeatureBitset::test().

◆ getNumExtraSGPRs() [2/2]

unsigned llvm::AMDGPU::IsaInfo::getNumExtraSGPRs	(	const MCSubtargetInfo *	STI,
		bool	VCCUsed,
		bool	FlatScrUsed,
		bool	XNACKUsed
	)

Returns: Number of extra SGPRs implicitly required by given subtarget STI when the given special registers are used.

Definition at line 972 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getCPU(), llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::getIsaVersion(), and llvm::FeatureBitset::test().

Referenced by llvm::AMDGPUAsmPrinter::emitFunctionBodyEnd(), getNumExtraSGPRs(), and llvm::AMDGPUResourceUsageAnalysis::SIFunctionResourceInfo::getTotalNumSGPRs().

◆ getNumSGPRBlocks()

unsigned llvm::AMDGPU::IsaInfo::getNumSGPRBlocks	(	const MCSubtargetInfo *	STI,
		unsigned	NumSGPRs
	)

Returns: Number of SGPR blocks needed for given subtarget STI when NumSGPRs are used. NumSGPRs should already include any special register counts.

Definition at line 1003 of file AMDGPUBaseInfo.cpp.

References llvm::alignTo(), and getSGPREncodingGranule().

◆ getNumVGPRBlocks()

unsigned llvm::AMDGPU::IsaInfo::getNumVGPRBlocks	(	const MCSubtargetInfo *	STI,
		unsigned	NumSGPRs,
		std::optional< bool >	EnableWavefrontSize32 = `std::nullopt`
	)

Returns: Number of VGPR blocks needed for given subtarget STI when NumVGPRs are used.

For subtargets which support it, EnableWavefrontSize32 should match the ENABLE_WAVEFRONT_SIZE32 kernel descriptor field.

Definition at line 1099 of file AMDGPUBaseInfo.cpp.

References llvm::alignTo(), and getVGPREncodingGranule().

◆ getNumWavesPerEUWithNumVGPRs()

unsigned llvm::AMDGPU::IsaInfo::getNumWavesPerEUWithNumVGPRs	(	const MCSubtargetInfo *	STI,
		unsigned	NumVGPRs
	)

Returns: Number of waves reachable for a given NumVGPRs usage for given subtarget STI.

Definition at line 1056 of file AMDGPUBaseInfo.cpp.

References llvm::alignTo(), getMaxWavesPerEU(), getTotalNumVGPRs(), and getVGPRAllocGranule().

Referenced by getMinNumVGPRs(), and llvm::GCNSubtarget::getOccupancyWithNumVGPRs().

◆ getSGPRAllocGranule()

unsigned llvm::AMDGPU::IsaInfo::getSGPRAllocGranule ( const MCSubtargetInfo * STI )

Returns: SGPR allocation granularity for given subtarget STI.

Definition at line 906 of file AMDGPUBaseInfo.cpp.

References getAddressableNumSGPRs(), llvm::MCSubtargetInfo::getCPU(), and llvm::AMDGPU::getIsaVersion().

Referenced by getMaxNumSGPRs(), getMinNumSGPRs(), and llvm::GCNSubtarget::getSGPRAllocGranule().

◆ getSGPREncodingGranule()

unsigned llvm::AMDGPU::IsaInfo::getSGPREncodingGranule ( const MCSubtargetInfo * STI )

Returns: SGPR encoding granularity for given subtarget STI.

Definition at line 915 of file AMDGPUBaseInfo.cpp.

Referenced by llvm::AMDGPUDisassembler::decodeCOMPUTE_PGM_RSRC1(), getNumSGPRBlocks(), and llvm::GCNSubtarget::getSGPREncodingGranule().

◆ getTargetIDSettingFromFeatureString()

static TargetIDSetting llvm::AMDGPU::IsaInfo::getTargetIDSettingFromFeatureString ( StringRef FeatureString )

static

Definition at line 730 of file AMDGPUBaseInfo.cpp.

References llvm::StringRef::endswith(), llvm_unreachable, Off, and On.

Referenced by llvm::AMDGPU::IsaInfo::AMDGPUTargetID::setTargetIDFromTargetIDStream().

◆ getTotalNumSGPRs()

unsigned llvm::AMDGPU::IsaInfo::getTotalNumSGPRs ( const MCSubtargetInfo * STI )

Returns: Total number of SGPRs for given subtarget STI.

Definition at line 919 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getCPU(), and llvm::AMDGPU::getIsaVersion().

Referenced by getMaxNumSGPRs(), getMinNumSGPRs(), and llvm::GCNSubtarget::getTotalNumSGPRs().

◆ getTotalNumVGPRs()

unsigned llvm::AMDGPU::IsaInfo::getTotalNumVGPRs ( const MCSubtargetInfo * STI )

Returns: Total number of VGPRs for given subtarget STI.

Definition at line 1039 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::isGFX10Plus(), and llvm::FeatureBitset::test().

Referenced by getMaxNumVGPRs(), getMinNumVGPRs(), getNumWavesPerEUWithNumVGPRs(), and llvm::GCNSubtarget::getTotalNumVGPRs().

◆ getVGPRAllocGranule()

unsigned llvm::AMDGPU::IsaInfo::getVGPRAllocGranule	(	const MCSubtargetInfo *	STI,
		std::optional< bool >	EnableWavefrontSize32 = `std::nullopt`
	)

Returns: VGPR allocation granularity for given subtarget STI.

For subtargets which support it, EnableWavefrontSize32 should match the ENABLE_WAVEFRONT_SIZE32 kernel descriptor field.

Definition at line 1009 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), llvm::AMDGPU::hasGFX10_3Insts(), and llvm::FeatureBitset::test().

Referenced by getMaxNumVGPRs(), getMinNumVGPRs(), getNumWavesPerEUWithNumVGPRs(), llvm::GCNSubtarget::getVGPRAllocGranule(), and llvm::GCNSchedStrategy::initialize().

◆ getVGPREncodingGranule()

unsigned llvm::AMDGPU::IsaInfo::getVGPREncodingGranule	(	const MCSubtargetInfo *	STI,
		std::optional< bool >	EnableWavefrontSize32 = `std::nullopt`
	)

Returns: VGPR encoding granularity for given subtarget STI.

For subtargets which support it, EnableWavefrontSize32 should match the ENABLE_WAVEFRONT_SIZE32 kernel descriptor field.

Definition at line 1027 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), and llvm::FeatureBitset::test().

Referenced by llvm::AMDGPUDisassembler::decodeCOMPUTE_PGM_RSRC1(), getNumVGPRBlocks(), and llvm::GCNSubtarget::getVGPREncodingGranule().

◆ getWavefrontSize()

unsigned llvm::AMDGPU::IsaInfo::getWavefrontSize ( const MCSubtargetInfo * STI )

Returns: Wavefront size for given subtarget STI.

Definition at line 810 of file AMDGPUBaseInfo.cpp.

References llvm::MCSubtargetInfo::getFeatureBits(), and llvm::FeatureBitset::test().

Referenced by getWavesPerWorkGroup().

◆ getWavesPerEUForWorkGroup()

unsigned llvm::AMDGPU::IsaInfo::getWavesPerEUForWorkGroup	(	const MCSubtargetInfo *	STI,
		unsigned	FlatWorkGroupSize
	)

Returns: Number of waves per execution unit required to support the given FlatWorkGroupSize.

Definition at line 886 of file AMDGPUBaseInfo.cpp.

References llvm::divideCeil(), getEUsPerCU(), and getWavesPerWorkGroup().

Referenced by llvm::GCNSubtarget::getWavesPerEUForWorkGroup(), and llvm::R600Subtarget::getWavesPerEUForWorkGroup().

◆ getWavesPerWorkGroup()

unsigned llvm::AMDGPU::IsaInfo::getWavesPerWorkGroup	(	const MCSubtargetInfo *	STI,
		unsigned	FlatWorkGroupSize
	)

Returns: Number of waves per work group for given subtarget STI and FlatWorkGroupSize.

Definition at line 901 of file AMDGPUBaseInfo.cpp.

References llvm::divideCeil(), and getWavefrontSize().

Referenced by getMaxWorkGroupsPerCU(), and getWavesPerEUForWorkGroup().

Classes

Enumerations

Functions

Enumeration Type Documentation

◆ anonymous enum

◆ TargetIDSetting

Function Documentation

◆ getAddressableLocalMemorySize()

◆ getAddressableNumSGPRs()

◆ getAddressableNumVGPRs()

◆ getEUsPerCU()

◆ getLocalMemorySize()

◆ getMaxFlatWorkGroupSize()

◆ getMaxNumSGPRs()

◆ getMaxNumVGPRs()

◆ getMaxWavesPerEU()

◆ getMaxWorkGroupsPerCU()

◆ getMinFlatWorkGroupSize()

◆ getMinNumSGPRs()

◆ getMinNumVGPRs()

◆ getMinWavesPerEU()

◆ getNumExtraSGPRs() [1/2]

◆ getNumExtraSGPRs() [2/2]

◆ getNumSGPRBlocks()

◆ getNumVGPRBlocks()

◆ getNumWavesPerEUWithNumVGPRs()

◆ getSGPRAllocGranule()

◆ getSGPREncodingGranule()

◆ getTargetIDSettingFromFeatureString()

◆ getTotalNumSGPRs()

◆ getTotalNumVGPRs()

◆ getVGPRAllocGranule()

◆ getVGPREncodingGranule()

◆ getWavefrontSize()

◆ getWavesPerEUForWorkGroup()

◆ getWavesPerWorkGroup()