llvm::LibcallLoweringInfo Class Reference

Tracks which library functions to use for a particular subtarget or function. More...

#include "llvm/Analysis/LibcallLoweringInfo.h"

Public Types
using	ApplyContextRulesFn = function_ref<void(LibcallLoweringInfo &)>
	Callback applying the caller's context-specific (e.g.

Public Member Functions
LLVM_ABI	LibcallLoweringInfo (const RTLIB::RuntimeLibcallsInfo &RTLCI, ApplyContextRulesFn ApplyContextRules={})
	Construct the lowering info from the module-level RTLCI, seeding the default implementation for every available libcall, then applying the optional ApplyContextRules callback for the caller's context-specific libcall rules.
const RTLIB::RuntimeLibcallsInfo &	getRuntimeLibcallsInfo () const
const char *	getLibcallName (RTLIB::Libcall Call) const
	Get the libcall routine name for the specified libcall.
RTLIB::LibcallImpl	getLibcallImpl (RTLIB::Libcall Call) const
	Return the lowering's selection of implementation call for Call.
RTLIB::LibcallImpl	getVectorLibcallImplOrMasked (RTLIB::Libcall Call) const
	Return the implementation for Call, or for its masked variant if Call has no implementation.
void	setLibcallImpl (RTLIB::Libcall Call, RTLIB::LibcallImpl Impl)
	Remap the default libcall routine name for the specified libcall.
CallingConv::ID	getLibcallCallingConv (RTLIB::Libcall Call) const
CallingConv::ID	getLibcallImplCallingConv (RTLIB::LibcallImpl Call) const
	Get the CallingConv that should be used for the specified libcall.
RTLIB::LibcallImpl	getMemcpyImpl () const
	Return a function impl compatible with RTLIB::MEMCPY, or RTLIB::Unsupported if fully unsupported.

Detailed Description

Tracks which library functions to use for a particular subtarget or function.

Definition at line 28 of file LibcallLoweringInfo.h.

Member Typedef Documentation

ApplyContextRulesFn

using llvm::LibcallLoweringInfo::ApplyContextRulesFn = function_ref<void(LibcallLoweringInfo &)>

Callback applying the caller's context-specific (e.g.

subtarget) libcall rules on top of the module-level defaults.

Definition at line 38 of file LibcallLoweringInfo.h.

Constructor & Destructor Documentation

LibcallLoweringInfo()

LibcallLoweringInfo::LibcallLoweringInfo	(	const RTLIB::RuntimeLibcallsInfo &	RTLCI,
		ApplyContextRulesFn	ApplyContextRules = {} )

Construct the lowering info from the module-level RTLCI, seeding the default implementation for every available libcall, then applying the optional ApplyContextRules callback for the caller's context-specific libcall rules.

Definition at line 14 of file LibcallLoweringInfo.cpp.

References llvm::RTLIB::RuntimeLibcallsInfo::getLibcallFromImpl(), and llvm::RTLIB::libcall_impls().

Member Function Documentation

getLibcallCallingConv()

CallingConv::ID llvm::LibcallLoweringInfo::getLibcallCallingConv ( RTLIB::Libcall Call ) const

inline

Definition at line 85 of file LibcallLoweringInfo.h.

References Call.

getLibcallImpl()

RTLIB::LibcallImpl llvm::LibcallLoweringInfo::getLibcallImpl ( RTLIB::Libcall Call ) const

inline

Return the lowering's selection of implementation call for Call.

Definition at line 60 of file LibcallLoweringInfo.h.

References Call.

Referenced by CreateFailBB(), llvm::ARMSelectionDAGInfo::EmitSpecializedLibcall(), llvm::AArch64SelectionDAGInfo::EmitStreamingCompatibleMemLibCall(), llvm::HexagonSelectionDAGInfo::EmitTargetCodeForMemcpy(), llvm::XCoreSelectionDAGInfo::EmitTargetCodeForMemcpy(), getMemcpyImpl(), getRuntimeCallSDValueHelper(), getVectorLibcallImplOrMasked(), isDivRemLibcallAvailable(), isSinCosLibcallAvailable(), llvm::SparcTargetLowering::LowerF128Op(), llvm::AArch64GISelUtils::matchEmitBZero(), peephole(), selectFPCmpLibcall(), and llvm::TargetLowering::softenSetCCOperands().

getLibcallImplCallingConv()

CallingConv::ID llvm::LibcallLoweringInfo::getLibcallImplCallingConv ( RTLIB::LibcallImpl Call ) const

inline

Get the CallingConv that should be used for the specified libcall.

Definition at line 90 of file LibcallLoweringInfo.h.

References Call.

Referenced by llvm::ARMSelectionDAGInfo::EmitSpecializedLibcall(), llvm::AArch64SelectionDAGInfo::EmitStreamingCompatibleMemLibCall(), llvm::HexagonSelectionDAGInfo::EmitTargetCodeForMemcpy(), llvm::XCoreSelectionDAGInfo::EmitTargetCodeForMemcpy(), getRuntimeCallSDValueHelper(), and llvm::SparcTargetLowering::LowerF128Op().

getLibcallName()

const char * llvm::LibcallLoweringInfo::getLibcallName ( RTLIB::Libcall Call ) const

inline

Get the libcall routine name for the specified libcall.

Definition at line 53 of file LibcallLoweringInfo.h.

References Call, llvm::StringRef::data(), and llvm::RTLIB::RuntimeLibcallsInfo::getLibcallImplName().

getMemcpyImpl()

RTLIB::LibcallImpl llvm::LibcallLoweringInfo::getMemcpyImpl ( ) const

inline

Return a function impl compatible with RTLIB::MEMCPY, or RTLIB::Unsupported if fully unsupported.

Definition at line 96 of file LibcallLoweringInfo.h.

References getLibcallImpl().

getRuntimeLibcallsInfo()

const RTLIB::RuntimeLibcallsInfo & llvm::LibcallLoweringInfo::getRuntimeLibcallsInfo ( ) const

inline

Definition at line 47 of file LibcallLoweringInfo.h.

getVectorLibcallImplOrMasked()

RTLIB::LibcallImpl llvm::LibcallLoweringInfo::getVectorLibcallImplOrMasked ( RTLIB::Libcall Call ) const

inline

Return the implementation for Call, or for its masked variant if Call has no implementation.

FIXME: Callers should explicitly try the masked variant and track whether a mask argument is needed, instead of re-deriving it from the result with hasVectorMaskArgument.

Definition at line 70 of file LibcallLoweringInfo.h.

References Call, getLibcallImpl(), and llvm::RTLIB::RuntimeLibcallsInfo::getMaskedVectorLibcall().

Referenced by llvm::TargetLowering::expandMultipleResultFPLibCall(), and performVselectPowCombine().

setLibcallImpl()

void llvm::LibcallLoweringInfo::setLibcallImpl ( RTLIB::Libcall Call, RTLIB::LibcallImpl Impl )

inline

Remap the default libcall routine name for the specified libcall.

Definition at line 79 of file LibcallLoweringInfo.h.

References Call.

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

• include/llvm/Analysis/LibcallLoweringInfo.h
• lib/Analysis/LibcallLoweringInfo.cpp