llvm::offloading::amdgpu Namespace Reference

Classes
struct	AMDGPUKernelMetaData
	Struct for holding metadata related to AMDGPU kernels, for more information about the metadata and its meaning see: https://llvm.org/docs/AMDGPUUsage.html#code-object-v3. More...

Functions
LLVM_ABI bool	isImageCompatibleWithEnv (StringRef ImageArch, uint32_t ImageFlags, StringRef EnvTargetID)
	Check if an image is compatible with current system's environment.
LLVM_ABI Error	getAMDGPUMetaDataFromImage (MemoryBufferRef MemBuffer, StringMap< AMDGPUKernelMetaData > &KernelInfoMap, uint16_t &ELFABIVersion)
	Reads AMDGPU specific metadata from the ELF file and propagates the KernelInfoMap.

Function Documentation

getAMDGPUMetaDataFromImage()

Error llvm::offloading::amdgpu::getAMDGPUMetaDataFromImage	(	MemoryBufferRef	MemBuffer,
		StringMap< AMDGPUKernelMetaData > &	KernelInfoMap,
		uint16_t &	ELFABIVersion )

Reads AMDGPU specific metadata from the ELF file and propagates the KernelInfoMap.

Definition at line 347 of file Utility.cpp.

References llvm::object::ELFFile< ELF64LE >::create(), llvm::ELF::EI_ABIVERSION, llvm::MemoryBufferRef::getBuffer(), llvm::object::ELFFile< ELFT >::getHeader(), N, llvm::object::ELFFile< ELFT >::notes(), llvm::object::ELFFile< ELFT >::sections(), llvm::ELF::SHT_NOTE, llvm::Error::success(), and llvm::Expected< T >::takeError().

isImageCompatibleWithEnv()

bool llvm::offloading::amdgpu::isImageCompatibleWithEnv	(	StringRef	ImageArch,
		uint32_t	ImageFlags,
		StringRef	EnvTargetID )

Check if an image is compatible with current system's environment.

The system environment is given as a 'target-id' which has the form:

<target-id> := <processor> ( ":" <target-feature> ( "+" | "-" ) )*

If a feature is not specific as '+' or '-' it is assumed to be in an 'any' and is compatible with either '+' or '-'. The HSA runtime returns this information using the target-id, while we use the ELF header to determine these features.

Definition at line 155 of file Utility.cpp.

References llvm::StringRef::contains(), llvm::ELF::EF_AMDGPU_FEATURE_SRAMECC_ANY_V4, llvm::ELF::EF_AMDGPU_FEATURE_SRAMECC_OFF_V4, llvm::ELF::EF_AMDGPU_FEATURE_SRAMECC_ON_V4, llvm::ELF::EF_AMDGPU_FEATURE_SRAMECC_UNSUPPORTED_V4, llvm::ELF::EF_AMDGPU_FEATURE_SRAMECC_V4, llvm::ELF::EF_AMDGPU_FEATURE_XNACK_ANY_V4, llvm::ELF::EF_AMDGPU_FEATURE_XNACK_OFF_V4, llvm::ELF::EF_AMDGPU_FEATURE_XNACK_ON_V4, llvm::ELF::EF_AMDGPU_FEATURE_XNACK_UNSUPPORTED_V4, llvm::ELF::EF_AMDGPU_FEATURE_XNACK_V4, and llvm::StringRef::split().