OMPIRBuilder.cpp File Reference

This file implements the OpenMPIRBuilder class, which is used as a convenient way to create LLVM instructions for OpenMP directives. More...

#include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
#include "llvm/ADT/SmallBitVector.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/Analysis/CodeMetrics.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/Analysis/PostDominators.h"
#include "llvm/Analysis/ScalarEvolution.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/Frontend/Offloading/Utility.h"
#include "llvm/Frontend/OpenMP/OMPGridValues.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/PassInstrumentation.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/ReplaceConstant.h"
#include "llvm/IR/Value.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/NVVMAttributes.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Cloning.h"
#include "llvm/Transforms/Utils/CodeExtractor.h"
#include "llvm/Transforms/Utils/LoopPeel.h"
#include "llvm/Transforms/Utils/UnrollLoop.h"
#include <cstdint>
#include <optional>
#include "llvm/Frontend/OpenMP/OMPKinds.def"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "openmp-ir-builder"
#define	OMP_ATTRS_SET(VarName, AttrSet)
#define	OMP_RTL_ATTRS(Enum, FnAttrSet, RetAttrSet, ArgAttrSets)
#define	OMP_RTL(Enum, Str, IsVarArg, ReturnType, ...)
#define	OMP_RTL(Enum, Str, ...)
#define	OMP_CANCEL_KIND(Enum, Str, DirectiveEnum, Value)
#define	OMP_CANCEL_KIND(Enum, Str, DirectiveEnum, Value)
#define	OMP_TYPE(VarName, InitValue)
#define	OMP_ARRAY_TYPE(VarName, ElemTy, ArraySize)
#define	OMP_FUNCTION_TYPE(VarName, IsVarArg, ReturnType, ...)
#define	OMP_STRUCT_TYPE(VarName, StructName, Packed, ...)

Functions
static bool	isConflictIP (IRBuilder<>::InsertPoint IP1, IRBuilder<>::InsertPoint IP2)
	Return whether IP1 and IP2 are ambiguous, i.e.
static bool	isValidWorkshareLoopScheduleType (OMPScheduleType SchedType)
static void	restoreIPandDebugLoc (llvm::IRBuilderBase &Builder, llvm::IRBuilderBase::InsertPoint IP)
	This is wrapper over IRBuilderBase::restoreIP that also restores the current debug location to the last instruction in the specified basic block if the insert point points to the end of the block.
static bool	hasGridValue (const Triple &T)
static const omp::GV &	getGridValue (const Triple &T, Function *Kernel)
static OMPScheduleType	getOpenMPBaseScheduleType (llvm::omp::ScheduleKind ClauseKind, bool HasChunks, bool HasSimdModifier, bool HasDistScheduleChunks)
	Determine which scheduling algorithm to use, determined from schedule clause arguments.
static OMPScheduleType	getOpenMPOrderingScheduleType (OMPScheduleType BaseScheduleType, bool HasOrderedClause)
	Adds ordering modifier flags to schedule type.
static OMPScheduleType	getOpenMPMonotonicityScheduleType (OMPScheduleType ScheduleType, bool HasSimdModifier, bool HasMonotonic, bool HasNonmonotonic, bool HasOrderedClause)
	Adds monotonicity modifier flags to schedule type.
static OMPScheduleType	computeOpenMPScheduleType (ScheduleKind ClauseKind, bool HasChunks, bool HasSimdModifier, bool HasMonotonicModifier, bool HasNonmonotonicModifier, bool HasOrderedClause, bool HasDistScheduleChunks)
	Determine the schedule type using schedule and ordering clause arguments.
static std::optional< omp::OMPTgtExecModeFlags >	getTargetKernelExecMode (Function &Kernel)
	Given a function, if it represents the entry point of a target kernel, this returns the execution mode flags associated with that kernel.
static bool	isGenericKernel (Function &Fn)
static void	redirectTo (BasicBlock *Source, BasicBlock *Target, DebugLoc DL)
	Make Source branch to Target.
Value *	createFakeIntVal (IRBuilderBase &Builder, OpenMPIRBuilder::InsertPointTy OuterAllocaIP, llvm::SmallVectorImpl< Instruction * > &ToBeDeleted, OpenMPIRBuilder::InsertPointTy InnerAllocaIP, const Twine &Name="", bool AsPtr=true, bool Is64Bit=false)
static void	raiseUserConstantDataAllocasToEntryBlock (IRBuilderBase &Builder, Function *Function)
static void	hoistNonEntryAllocasToEntryBlock (llvm::BasicBlock &Block)
static void	hoistNonEntryAllocasToEntryBlock (llvm::Function *Func)
static Function *	createTargetParallelWrapper (OpenMPIRBuilder *OMPIRBuilder, Function &OutlinedFn)
	Create wrapper function used to gather the outlined function's argument structure from a shared buffer and to forward them to it when running in Generic mode.
static void	targetParallelCallback (OpenMPIRBuilder *OMPIRBuilder, Function &OutlinedFn, Function *OuterFn, BasicBlock *OuterAllocaBB, Value *Ident, Value *IfCondition, Value *NumThreads, Instruction *PrivTID, AllocaInst *PrivTIDAddr, Value *ThreadID, const SmallVector< Instruction *, 4 > &ToBeDeleted)
static void	hostParallelCallback (OpenMPIRBuilder *OMPIRBuilder, Function &OutlinedFn, Function *OuterFn, Value *Ident, Value *IfCondition, Instruction *PrivTID, AllocaInst *PrivTIDAddr, const SmallVector< Instruction *, 4 > &ToBeDeleted)
static Value *	emitTaskDependencies (OpenMPIRBuilder &OMPBuilder, const SmallVectorImpl< OpenMPIRBuilder::DependData > &Dependencies)
static OpenMPIRBuilder::InsertPointTy	getInsertPointAfterInstr (Instruction *I)
static void	checkReductionInfos (ArrayRef< OpenMPIRBuilder::ReductionInfo > ReductionInfos, bool IsGPU)
static Function *	getFreshReductionFunc (Module &M)
static Error	populateReductionFunction (Function *ReductionFunc, ArrayRef< OpenMPIRBuilder::ReductionInfo > ReductionInfos, IRBuilder<> &Builder, ArrayRef< bool > IsByRef, bool IsGPU)
static llvm::CallInst *	emitNoUnwindRuntimeCall (IRBuilder<> &Builder, llvm::FunctionCallee Callee, ArrayRef< llvm::Value * > Args, const llvm::Twine &Name)
static FunctionCallee	getKmpcDistForStaticInitForType (Type *Ty, Module &M, OpenMPIRBuilder &OMPBuilder)
static FunctionCallee	getKmpcForStaticInitForType (Type *Ty, Module &M, OpenMPIRBuilder &OMPBuilder)
static void	addAccessGroupMetadata (BasicBlock *Block, MDNode *AccessGroup, LoopInfo &LI)
	Attach llvm.access.group metadata to the memref instructions of Block.
static void	addLoopMetadata (CanonicalLoopInfo *Loop, ArrayRef< Metadata * > Properties)
	Attach loop metadata Properties to the loop described by Loop.
static void	applyParallelAccessesMetadata (CanonicalLoopInfo *CLI, LLVMContext &Ctx, Loop *Loop, LoopInfo &LoopInfo, SmallVector< Metadata * > &LoopMDList)
static FunctionCallee	getKmpcForStaticLoopForType (Type *Ty, OpenMPIRBuilder *OMPBuilder, WorksharingLoopType LoopType)
static void	createTargetLoopWorkshareCall (OpenMPIRBuilder *OMPBuilder, WorksharingLoopType LoopType, BasicBlock *InsertBlock, Value *Ident, Value *LoopBodyArg, Value *TripCount, Function &LoopBodyFn, bool NoLoop)
static void	workshareLoopTargetCallback (OpenMPIRBuilder *OMPIRBuilder, CanonicalLoopInfo *CLI, Value *Ident, Function &OutlinedFn, const SmallVector< Instruction *, 4 > &ToBeDeleted, WorksharingLoopType LoopType, bool NoLoop)
static FunctionCallee	getKmpcForDynamicInitForType (Type *Ty, Module &M, OpenMPIRBuilder &OMPBuilder)
	Returns an LLVM function to call for initializing loop bounds using OpenMP dynamic scheduling depending on type.
static FunctionCallee	getKmpcForDynamicNextForType (Type *Ty, Module &M, OpenMPIRBuilder &OMPBuilder)
	Returns an LLVM function to call for updating the next loop using OpenMP dynamic scheduling depending on type.
static FunctionCallee	getKmpcForDynamicFiniForType (Type *Ty, Module &M, OpenMPIRBuilder &OMPBuilder)
	Returns an LLVM function to call for finalizing the dynamic loop using depending on type.
static void	redirectAllPredecessorsTo (BasicBlock *OldTarget, BasicBlock *NewTarget, DebugLoc DL)
	Redirect all edges that branch to OldTarget to NewTarget.
static void	removeUnusedBlocksFromParent (ArrayRef< BasicBlock * > BBs)
	Determine which blocks in BBs are reachable from outside and remove the ones that are not reachable from the function.
static void	addBasicBlockMetadata (BasicBlock *BB, ArrayRef< Metadata * > Properties)
	Attach metadata Properties to the basic block described by BB.
static std::unique_ptr< TargetMachine >	createTargetMachine (Function *F, CodeGenOptLevel OptLevel)
	Create the TargetMachine object to query the backend for optimization preferences.
static int32_t	computeHeuristicUnrollFactor (CanonicalLoopInfo *CLI)
	Heuristically determine the best-performant unroll factor for CLI.
static void	updateNVPTXAttr (Function &Kernel, StringRef Name, int32_t Value, bool Min)
static void	FixupDebugInfoForOutlinedFunction (OpenMPIRBuilder &OMPBuilder, IRBuilderBase &Builder, Function *Func, DenseMap< Value *, std::tuple< Value *, unsigned > > &ValueReplacementMap)
static Value *	removeASCastIfPresent (Value *V)
static Expected< Function * >	createOutlinedFunction (OpenMPIRBuilder &OMPBuilder, IRBuilderBase &Builder, const OpenMPIRBuilder::TargetKernelDefaultAttrs &DefaultAttrs, StringRef FuncName, SmallVectorImpl< Value * > &Inputs, OpenMPIRBuilder::TargetBodyGenCallbackTy &CBFunc, OpenMPIRBuilder::TargetGenArgAccessorsCallbackTy &ArgAccessorFuncCB)
static LoadInst *	loadSharedDataFromTaskDescriptor (OpenMPIRBuilder &OMPIRBuilder, IRBuilderBase &Builder, Value *TaskWithPrivates, Type *TaskWithPrivatesTy)
	Given a task descriptor, TaskWithPrivates, return the pointer to the block of pointers containing shared data between the parent task and the created task.
static Function *	emitTargetTaskProxyFunction (OpenMPIRBuilder &OMPBuilder, IRBuilderBase &Builder, CallInst *StaleCI, StructType *PrivatesTy, StructType *TaskWithPrivatesTy, const size_t NumOffloadingArrays, const int SharedArgsOperandNo)
	Create an entry point for a target task with the following.
static Type *	getOffloadingArrayType (Value *V)
static StructType *	createTaskWithPrivatesTy (OpenMPIRBuilder &OMPIRBuilder, ArrayRef< Value * > OffloadingArraysToPrivatize)
static Error	emitTargetOutlinedFunction (OpenMPIRBuilder &OMPBuilder, IRBuilderBase &Builder, bool IsOffloadEntry, TargetRegionEntryInfo &EntryInfo, const OpenMPIRBuilder::TargetKernelDefaultAttrs &DefaultAttrs, Function *&OutlinedFn, Constant *&OutlinedFnID, SmallVectorImpl< Value * > &Inputs, OpenMPIRBuilder::TargetBodyGenCallbackTy &CBFunc, OpenMPIRBuilder::TargetGenArgAccessorsCallbackTy &ArgAccessorFuncCB)
static void	emitTargetCall (OpenMPIRBuilder &OMPBuilder, IRBuilderBase &Builder, OpenMPIRBuilder::InsertPointTy AllocaIP, ArrayRef< BasicBlock * > DeallocBlocks, OpenMPIRBuilder::TargetDataInfo &Info, const OpenMPIRBuilder::TargetKernelDefaultAttrs &DefaultAttrs, const OpenMPIRBuilder::TargetKernelRuntimeAttrs &RuntimeAttrs, Value *IfCond, Function *OutlinedFn, Constant *OutlinedFnID, SmallVectorImpl< Value * > &Args, OpenMPIRBuilder::GenMapInfoCallbackTy GenMapInfoCB, OpenMPIRBuilder::CustomMapperCallbackTy CustomMapperCB, const OpenMPIRBuilder::DependenciesInfo &Dependencies, bool HasNoWait, Value *DynCGroupMem, OMPDynGroupprivateFallbackType DynCGroupMemFallback)
static std::string	mangleVectorParameters (ArrayRef< llvm::OpenMPIRBuilder::DeclareSimdAttrTy > ParamAttrs)
	Mangle the parameter part of the vector function name according to their OpenMP classification.
template<typename T>
static void	addAArch64VectorName (T VLEN, StringRef LMask, StringRef Prefix, char ISA, StringRef ParSeq, StringRef MangledName, bool OutputBecomesInput, llvm::Function *Fn)
static void	addAArch64AdvSIMDNDSNames (unsigned NDS, StringRef Mask, StringRef Prefix, char ISA, StringRef ParSeq, StringRef MangledName, bool OutputBecomesInput, llvm::Function *Fn)

Variables
static cl::opt< bool >	OptimisticAttributes ("openmp-ir-builder-optimistic-attributes", cl::Hidden, cl::desc("Use optimistic attributes describing " "'as-if' properties of runtime calls."), cl::init(false))
static cl::opt< double >	UnrollThresholdFactor ("openmp-ir-builder-unroll-threshold-factor", cl::Hidden, cl::desc("Factor for the unroll threshold to account for code " "simplifications still taking place"), cl::init(1.5))

Detailed Description

This file implements the OpenMPIRBuilder class, which is used as a convenient way to create LLVM instructions for OpenMP directives.

Definition in file OMPIRBuilder.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "openmp-ir-builder"

Definition at line 69 of file OMPIRBuilder.cpp.

OMP_ARRAY_TYPE

#define OMP_ARRAY_TYPE	(		VarName,
			ElemTy,
			ArraySize )

Value:

  VarName##Ty = ArrayType::get(ElemTy, ArraySize);                             \
  VarName##PtrTy = PointerType::get(Ctx, DefaultTargetAS);

OMP_ATTRS_SET

#define OMP_ATTRS_SET	(		VarName,
			AttrSet )

Value:

AttributeSet VarName = AttrSet;

OMP_CANCEL_KIND [1/2]

#define OMP_CANCEL_KIND	(		Enum,
			Str,
			DirectiveEnum,
			Value )

Value:

  case DirectiveEnum:                                                          \
    CancelKind = Builder.getInt32(Value);                                      \
    break;

OMP_CANCEL_KIND [2/2]

#define OMP_CANCEL_KIND	(		Enum,
			Str,
			DirectiveEnum,
			Value )

Value:

  case DirectiveEnum:                                                          \
    CancelKind = Builder.getInt32(Value);                                      \
    break;

OMP_FUNCTION_TYPE

#define OMP_FUNCTION_TYPE	(		VarName,
			IsVarArg,
			ReturnType,
			... )

Value:

  VarName = FunctionType::get(ReturnType, {__VA_ARGS__}, IsVarArg);            \
  VarName##Ptr = PointerType::get(Ctx, ProgramAS);

OMP_RTL [1/2]

#define OMP_RTL	(		Enum,
			Str,
			IsVarArg,
			ReturnType,
			... )

Value:

  case Enum:                                                                   \
    FnTy = FunctionType::get(ReturnType, ArrayRef<Type *>{__VA_ARGS__},        \
                             IsVarArg);                                        \
    Fn = M.getFunction(Str);                                                   \
    break;

OMP_RTL [2/2]

#define OMP_RTL	(		Enum,
			Str,
			... )

Value:

  case Enum:                                                                   \
    Fn = Function::Create(FnTy, GlobalValue::ExternalLinkage, Str, M);         \
    break;

OMP_RTL_ATTRS

#define OMP_RTL_ATTRS	(		Enum,
			FnAttrSet,
			RetAttrSet,
			ArgAttrSets )

Value:

  case Enum:                                                                   \
    FnAttrs = FnAttrs.addAttributes(Ctx, FnAttrSet);                           \
    addAttrSet(RetAttrs, RetAttrSet, /*Param*/ false);                         \
    for (size_t ArgNo = 0; ArgNo < ArgAttrSets.size(); ++ArgNo)                \
      addAttrSet(ArgAttrs[ArgNo], ArgAttrSets[ArgNo]);                         \
    Fn.setAttributes(AttributeList::get(Ctx, FnAttrs, RetAttrs, ArgAttrs));    \
    break;

OMP_STRUCT_TYPE

#define OMP_STRUCT_TYPE	(		VarName,
			StructName,
			Packed,
			... )

Value:

  T = StructType::getTypeByName(Ctx, StructName);                              \
  if (!T)                                                                      \
    T = StructType::create(Ctx, {__VA_ARGS__}, StructName, Packed);            \
  VarName = T;                                                                 \
  VarName##Ptr = PointerType::get(Ctx, DefaultTargetAS);

OMP_TYPE

#define OMP_TYPE	(		VarName,
			InitValue )

Value:

VarName = InitValue;

Function Documentation

addAArch64AdvSIMDNDSNames()

void addAArch64AdvSIMDNDSNames ( unsigned NDS, StringRef Mask, StringRef Prefix, char ISA, StringRef ParSeq, StringRef MangledName, bool OutputBecomesInput, llvm::Function * Fn )

static

Definition at line 12215 of file OMPIRBuilder.cpp.

References addAArch64VectorName(), and llvm_unreachable.

Referenced by llvm::OpenMPIRBuilder::emitAArch64DeclareSimdFunction().

addAArch64VectorName()

template<typename T>

void addAArch64VectorName ( T VLEN, StringRef LMask, StringRef Prefix, char ISA, StringRef ParSeq, StringRef MangledName, bool OutputBecomesInput, llvm::Function * Fn )

static

Definition at line 12200 of file OMPIRBuilder.cpp.

References llvm::Function::addFnAttr(), llvm::raw_svector_ostream::str(), and T.

Referenced by addAArch64AdvSIMDNDSNames(), and llvm::OpenMPIRBuilder::emitAArch64DeclareSimdFunction().

addAccessGroupMetadata()

void addAccessGroupMetadata ( BasicBlock * Block, MDNode * AccessGroup, LoopInfo & LI )

static

Attach llvm.access.group metadata to the memref instructions of Block.

Definition at line 6926 of file OMPIRBuilder.cpp.

References llvm::Block, and I.

Referenced by applyParallelAccessesMetadata().

addBasicBlockMetadata()

void addBasicBlockMetadata ( BasicBlock * BB, ArrayRef< Metadata * > Properties )

static

Attach metadata Properties to the basic block described by BB.

If the basic block already has metadata, the basic block properties are appended.

Definition at line 6891 of file OMPIRBuilder.cpp.

References llvm::append_range(), llvm::drop_begin(), llvm::ArrayRef< T >::empty(), llvm::BasicBlock::getContext(), llvm::MDNode::getDistinct(), llvm::Instruction::getMetadata(), llvm::BasicBlock::getTerminator(), llvm::MDNode::operands(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::MDNode::replaceOperandWith(), and llvm::Instruction::setMetadata().

Referenced by addLoopMetadata().

addLoopMetadata()

void addLoopMetadata ( CanonicalLoopInfo * Loop, ArrayRef< Metadata * > Properties )

static

Attach loop metadata Properties to the loop described by Loop.

If the loop already has metadata, the loop properties are appended.

Definition at line 6915 of file OMPIRBuilder.cpp.

References addBasicBlockMetadata(), and assert().

Referenced by llvm::OpenMPIRBuilder::applySimd(), llvm::OpenMPIRBuilder::unrollLoopFull(), llvm::OpenMPIRBuilder::unrollLoopHeuristic(), and llvm::OpenMPIRBuilder::unrollLoopPartial().

applyParallelAccessesMetadata()

void applyParallelAccessesMetadata ( CanonicalLoopInfo * CLI, LLVMContext & Ctx, Loop * Loop, LoopInfo & LoopInfo, SmallVector< Metadata * > & LoopMDList )

static

Definition at line 5812 of file OMPIRBuilder.cpp.

References addAccessGroupMetadata(), llvm::Block, llvm::MDNode::get(), llvm::MDString::get(), llvm::LoopBase< BlockT, LoopT >::getBlocks(), llvm::CanonicalLoopInfo::getCond(), llvm::MDNode::getDistinct(), llvm::CanonicalLoopInfo::getHeader(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::OpenMPIRBuilder::applySimd().

checkReductionInfos()

void checkReductionInfos ( ArrayRef< OpenMPIRBuilder::ReductionInfo > ReductionInfos, bool IsGPU )

static

Definition at line 4496 of file OMPIRBuilder.cpp.

References assert().

Referenced by llvm::OpenMPIRBuilder::createReductions(), and llvm::OpenMPIRBuilder::createReductionsGPU().

computeHeuristicUnrollFactor()

int32_t computeHeuristicUnrollFactor ( CanonicalLoopInfo * CLI )

static

Heuristically determine the best-performant unroll factor for CLI.

This depends on the target processor. We are re-using the same heuristics as the LoopUnrollPass.

Definition at line 7307 of file OMPIRBuilder.cpp.

References llvm::Aggressive, assert(), llvm::TargetTransformInfo::UnrollingPreferences::BEInsns, llvm::UnrollCostEstimator::canUnroll(), llvm::CodeMetrics::collectEphemeralValues(), llvm::computeUnrollCount(), llvm::TargetTransformInfo::UnrollingPreferences::Count, createTargetMachine(), llvm::dbgs(), llvm::dyn_cast(), F, FAM, llvm::TargetTransformInfo::UnrollingPreferences::Force, llvm::gatherPeelingPreferences(), llvm::gatherUnrollingPreferences(), llvm::CanonicalLoopInfo::getFunction(), llvm::CanonicalLoopInfo::getHeader(), llvm::LoopInfoBase< BlockT, LoopT >::getLoopFor(), llvm::UnrollCostEstimator::getRolledLoopSize(), I, llvm::SmallPtrSetImpl< PtrType >::insert(), LLVM_DEBUG, llvm::TargetTransformInfo::UnrollingPreferences::OptSizeThreshold, llvm::TargetTransformInfo::UnrollingPreferences::PartialOptSizeThreshold, llvm::TargetTransformInfo::UnrollingPreferences::PartialThreshold, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::AssumptionAnalysis::run(), llvm::DominatorTreeAnalysis::run(), llvm::LoopAnalysis::run(), llvm::ScalarEvolutionAnalysis::run(), llvm::TargetIRAnalysis::run(), llvm::Value::stripPointerCasts(), llvm::TargetTransformInfo::UnrollingPreferences::Threshold, and UnrollThresholdFactor.

Referenced by llvm::OpenMPIRBuilder::unrollLoopPartial().

computeOpenMPScheduleType()

OMPScheduleType computeOpenMPScheduleType ( ScheduleKind ClauseKind, bool HasChunks, bool HasSimdModifier, bool HasMonotonicModifier, bool HasNonmonotonicModifier, bool HasOrderedClause, bool HasDistScheduleChunks )

static

Determine the schedule type using schedule and ordering clause arguments.

Definition at line 281 of file OMPIRBuilder.cpp.

References assert(), getOpenMPBaseScheduleType(), getOpenMPMonotonicityScheduleType(), getOpenMPOrderingScheduleType(), and isValidWorkshareLoopScheduleType().

Referenced by llvm::OpenMPIRBuilder::applyWorkshareLoop().

createFakeIntVal()

Value * createFakeIntVal	(	IRBuilderBase &	Builder,
		OpenMPIRBuilder::InsertPointTy	OuterAllocaIP,
		llvm::SmallVectorImpl< Instruction * > &	ToBeDeleted,
		OpenMPIRBuilder::InsertPointTy	InnerAllocaIP,
		const Twine &	Name = "",
		bool	AsPtr = true,
		bool	Is64Bit = false )

Definition at line 444 of file OMPIRBuilder.cpp.

References llvm::cast(), llvm::Type::getInt32Ty(), llvm::Type::getInt64Ty(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::OpenMPIRBuilder::createTask(), llvm::OpenMPIRBuilder::createTeams(), and llvm::OpenMPIRBuilder::emitTargetTask().

createOutlinedFunction()

Expected< Function * > createOutlinedFunction ( OpenMPIRBuilder & OMPBuilder, IRBuilderBase & Builder, const OpenMPIRBuilder::TargetKernelDefaultAttrs & DefaultAttrs, StringRef FuncName, SmallVectorImpl< Value * > & Inputs, OpenMPIRBuilder::TargetBodyGenCallbackTy & CBFunc, OpenMPIRBuilder::TargetGenArgAccessorsCallbackTy & ArgAccessorFuncCB )

static

Definition at line 8797 of file OMPIRBuilder.cpp.

References llvm::BasicBlock::begin(), llvm::OpenMPIRBuilder::Config, llvm::OpenMPIRBuilder::ConstantAllocaRaiseCandidates, llvm::convertUsersOfConstantsToInstructions(), llvm::BasicBlock::Create(), llvm::Function::Create(), llvm::OpenMPIRBuilder::createTargetDeinit(), llvm::OpenMPIRBuilder::createTargetInit(), llvm::dyn_cast(), llvm::OpenMPIRBuilder::emitKernelExecutionMode(), llvm::OpenMPIRBuilder::emitUsed(), llvm::SmallVectorImpl< T >::emplace_back(), llvm::OpenMPIRBuilder::TargetKernelDefaultAttrs::ExecFlags, FixupDebugInfoForOutlinedFunction(), llvm::FunctionType::get(), llvm::Argument::getArgNo(), llvm::BasicBlock::getFirstNonPHIIt(), llvm::BasicBlock::getFirstNonPHIOrDbg(), llvm::Function::getFnAttribute(), llvm::Type::getInt64Ty(), llvm::GlobalValue::getParent(), llvm::PointerType::getUnqual(), llvm::GlobalValue::InternalLinkage, llvm::isa(), llvm::OpenMPIRBuilderConfig::isTargetDevice(), llvm::make_early_inc_range(), llvm::make_range(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), removeASCastIfPresent(), llvm::splitBB(), llvm::Expected< T >::takeError(), Users, and llvm::zip().

Referenced by emitTargetOutlinedFunction().

createTargetLoopWorkshareCall()

void createTargetLoopWorkshareCall ( OpenMPIRBuilder * OMPBuilder, WorksharingLoopType LoopType, BasicBlock * InsertBlock, Value * Ident, Value * LoopBodyArg, Value * TripCount, Function & LoopBodyFn, bool NoLoop )

static

Definition at line 6084 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::Builder, llvm::OpenMPIRBuilder::createRuntimeFunctionCall(), llvm::BasicBlock::end(), getKmpcForStaticLoopForType(), llvm::OpenMPIRBuilder::getOrCreateRuntimeFunction(), llvm::Value::getType(), llvm::OpenMPIRBuilder::M, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by workshareLoopTargetCallback().

createTargetMachine()

std::unique_ptr< TargetMachine > createTargetMachine ( Function * F, CodeGenOptLevel OptLevel )

static

Create the TargetMachine object to query the backend for optimization preferences.

Ideally, this would be passed from the front-end to the OpenMPBuilder, but e.g. Clang does not pass it to its CodeGen layer and creates it only when needed for the LLVM pass pipline. We use some default options to avoid having to pass too many settings from the frontend that probably do not matter.

Currently, TargetMachine is only used sometimes by the unrollLoopPartial method. If we are going to use TargetMachine for more purposes, especially those that are sensitive to TargetOptions, RelocModel and CodeModel, it might become be worth requiring front-ends to pass on their TargetMachine, or at least cache it between methods. Note that while fontends such as Clang have just a single main TargetMachine per translation unit, "target-cpu" and "target-features" that determine the TargetMachine are per-function and can be overrided using attribute((target("OPTIONS"))).

Definition at line 7286 of file OMPIRBuilder.cpp.

References llvm::Target::createTargetMachine(), F, llvm::TargetRegistry::lookupTarget(), and Options.

Referenced by llvm::lto::backend(), computeHeuristicUnrollFactor(), LLVMCreateTargetMachineWithOptions(), splitCodeGen(), and llvm::lto::thinBackend().

createTargetParallelWrapper()

Function * createTargetParallelWrapper ( OpenMPIRBuilder * OMPIRBuilder, Function & OutlinedFn )

static

Create wrapper function used to gather the outlined function's argument structure from a shared buffer and to forward them to it when running in Generic mode.

The outlined function is expected to receive 2 integer arguments followed by an optional pointer argument to an argument structure holding the rest.

Definition at line 1500 of file OMPIRBuilder.cpp.

References llvm::Function::arg_size(), assert(), llvm::OpenMPIRBuilder::Builder, llvm::BasicBlock::Create(), llvm::Function::Create(), llvm::FunctionType::get(), llvm::Module::getContext(), llvm::Value::getName(), llvm::OpenMPIRBuilder::getOrCreateRuntimeFunctionPtr(), llvm::GlobalValue::InternalLinkage, and llvm::OpenMPIRBuilder::M.

Referenced by targetParallelCallback().

createTaskWithPrivatesTy()

StructType * createTaskWithPrivatesTy ( OpenMPIRBuilder & OMPIRBuilder, ArrayRef< Value * > OffloadingArraysToPrivatize )

static

Definition at line 9151 of file OMPIRBuilder.cpp.

References assert(), llvm::StructType::create(), llvm::ArrayRef< T >::empty(), getOffloadingArrayType(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::OpenMPIRBuilder::emitTargetTask().

emitNoUnwindRuntimeCall()

llvm::CallInst * emitNoUnwindRuntimeCall ( IRBuilder<> & Builder, llvm::FunctionCallee Callee, ArrayRef< llvm::Value * > Args, const llvm::Twine & Name )

static

Definition at line 5053 of file OMPIRBuilder.cpp.

References Call.

Referenced by llvm::OpenMPIRBuilder::emitScanReduction().

emitTargetCall()

void emitTargetCall ( OpenMPIRBuilder & OMPBuilder, IRBuilderBase & Builder, OpenMPIRBuilder::InsertPointTy AllocaIP, ArrayRef< BasicBlock * > DeallocBlocks, OpenMPIRBuilder::TargetDataInfo & Info, const OpenMPIRBuilder::TargetKernelDefaultAttrs & DefaultAttrs, const OpenMPIRBuilder::TargetKernelRuntimeAttrs & RuntimeAttrs, Value * IfCond, Function * OutlinedFn, Constant * OutlinedFnID, SmallVectorImpl< Value * > & Args, OpenMPIRBuilder::GenMapInfoCallbackTy GenMapInfoCB, OpenMPIRBuilder::CustomMapperCallbackTy CustomMapperCB, const OpenMPIRBuilder::DependenciesInfo & Dependencies, bool HasNoWait, Value * DynCGroupMem, OMPDynGroupprivateFallbackType DynCGroupMemFallback )

static

Definition at line 9597 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::Builder, llvm::cantFail(), llvm::OpenMPIRBuilder::createRuntimeFunctionCall(), llvm::OpenMPIRBuilder::TargetKernelRuntimeAttrs::DeviceID, llvm::OpenMPIRBuilder::emitIfClause(), llvm::OpenMPIRBuilder::emitKernelLaunch(), llvm::OpenMPIRBuilder::emitOffloadingArraysAndArgs(), llvm::OpenMPIRBuilder::emitTargetTask(), llvm::OpenMPIRBuilder::DependenciesInfo::empty(), llvm::Constant::getNullValue(), llvm::OpenMPIRBuilder::getOrCreateDefaultSrcLocStr(), llvm::OpenMPIRBuilder::getOrCreateIdent(), llvm::PointerType::getUnqual(), llvm::OpenMPIRBuilder::TargetKernelRuntimeAttrs::LoopTripCount, llvm::OpenMPIRBuilder::TargetKernelDefaultAttrs::MaxTeams, llvm::OpenMPIRBuilder::TargetKernelRuntimeAttrs::MaxTeams, llvm::OpenMPIRBuilder::TargetKernelRuntimeAttrs::MaxThreads, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::IRBuilderBase::restoreIP(), llvm::OpenMPIRBuilder::TargetKernelArgs::RTArgs, llvm::IRBuilderBase::saveIP(), llvm::Error::success(), llvm::OpenMPIRBuilder::TargetKernelRuntimeAttrs::TargetThreadLimit, llvm::OpenMPIRBuilder::TargetKernelRuntimeAttrs::TeamsThreadLimit, and llvm::zip_equal().

Referenced by llvm::OpenMPIRBuilder::createTarget().

emitTargetOutlinedFunction()

Error emitTargetOutlinedFunction ( OpenMPIRBuilder & OMPBuilder, IRBuilderBase & Builder, bool IsOffloadEntry, TargetRegionEntryInfo & EntryInfo, const OpenMPIRBuilder::TargetKernelDefaultAttrs & DefaultAttrs, Function *& OutlinedFn, Constant *& OutlinedFnID, SmallVectorImpl< Value * > & Inputs, OpenMPIRBuilder::TargetBodyGenCallbackTy & CBFunc, OpenMPIRBuilder::TargetGenArgAccessorsCallbackTy & ArgAccessorFuncCB )

static

Definition at line 9171 of file OMPIRBuilder.cpp.

References createOutlinedFunction(), and llvm::OpenMPIRBuilder::emitTargetRegionFunction().

Referenced by llvm::OpenMPIRBuilder::createTarget().

emitTargetTaskProxyFunction()

Function * emitTargetTaskProxyFunction ( OpenMPIRBuilder & OMPBuilder, IRBuilderBase & Builder, CallInst * StaleCI, StructType * PrivatesTy, StructType * TaskWithPrivatesTy, const size_t NumOffloadingArrays, const int SharedArgsOperandNo )

static

Create an entry point for a target task with the following.

It'll have the following signature void .omp_target_task_proxy_func(i32 thread.id, ptr task) This function is called from emitTargetTask once the code to launch the target kernel has been outlined already. NumOffloadingArrays is the number of offloading arrays that we need to copy into the task structure so that the deferred target task can access this data even after the stack frame of the generating task has been rolled back. Offloading arrays contain base pointers, pointers, sizes etc of the data that the target kernel will access. These in effect are the non-empty arrays of pointers held by OpenMPIRBuilder::TargetDataRTArgs.

Definition at line 9018 of file OMPIRBuilder.cpp.

References llvm::CallBase::arg_size(), assert(), llvm::cast(), llvm::BasicBlock::Create(), llvm::Function::Create(), llvm::OpenMPIRBuilder::createRuntimeFunctionCall(), llvm::dyn_cast(), llvm::FunctionType::get(), llvm::AllocaInst::getAlign(), llvm::AllocaInst::getAllocatedType(), llvm::AllocaInst::getAllocationSize(), llvm::CallBase::getArgOperand(), llvm::CallBase::getCalledFunction(), llvm::Type::getInt32Ty(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::Value::getPointerAlignment(), llvm::GlobalValue::InternalLinkage, loadSharedDataFromTaskDescriptor(), llvm::OpenMPIRBuilder::M, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorImpl< T >::reserve(), and llvm::Value::setName().

Referenced by llvm::OpenMPIRBuilder::emitTargetTask().

emitTaskDependencies()

Value * emitTaskDependencies ( OpenMPIRBuilder & OMPBuilder, const SmallVectorImpl< OpenMPIRBuilder::DependData > & Dependencies )

static

Definition at line 2194 of file OMPIRBuilder.cpp.

References llvm::sampleprof::Base, llvm::OpenMPIRBuilder::Builder, llvm::OpenMPIRBuilder::emitTaskDependency(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::enumerate(), llvm::ArrayType::get(), llvm::IRBuilderBase::InsertPoint::getBlock(), llvm::Function::getEntryBlock(), llvm::BasicBlock::getParent(), llvm::BasicBlock::getTerminator(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by llvm::OpenMPIRBuilder::createTask(), and llvm::OpenMPIRBuilder::emitTargetTask().

FixupDebugInfoForOutlinedFunction()

void FixupDebugInfoForOutlinedFunction ( OpenMPIRBuilder & OMPBuilder, IRBuilderBase & Builder, Function * Func, DenseMap< Value *, std::tuple< Value *, unsigned > > & ValueReplacementMap )

static

Definition at line 8700 of file OMPIRBuilder.cpp.

References assert(), llvm::BasicBlock::back(), llvm::OpenMPIRBuilder::Config, llvm::dyn_cast(), llvm::BasicBlock::empty(), llvm::filterDbgVars(), llvm::MDNode::get(), llvm::DIVariable::getAlignInBits(), llvm::DILocalVariable::getAnnotations(), llvm::DILocalVariable::getArg(), llvm::DIScope::getFile(), llvm::DIVariable::getFile(), llvm::DILocalVariable::getFlags(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::DIVariable::getLine(), llvm::DIVariable::getName(), llvm::BasicBlock::getParent(), llvm::DILocalVariable::getScope(), llvm::DIVariable::getType(), I, llvm::BasicBlock::insertDbgRecordBefore(), instructions, llvm::isa(), llvm::OpenMPIRBuilderConfig::isTargetDevice(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by createOutlinedFunction().

getFreshReductionFunc()

Function * getFreshReductionFunc ( Module & M )

static

Definition at line 4771 of file OMPIRBuilder.cpp.

References llvm::Function::Create(), llvm::FunctionType::get(), llvm::PointerType::getUnqual(), llvm::Type::getVoidTy(), and llvm::GlobalValue::InternalLinkage.

Referenced by llvm::OpenMPIRBuilder::createReductions().

getGridValue()

const omp::GV & getGridValue ( const Triple & T, Function * Kernel )

static

Definition at line 176 of file OMPIRBuilder.cpp.

References llvm::StringRef::count(), llvm::omp::getAMDGPUGridValues(), llvm_unreachable, llvm::omp::NVPTXGridValues, llvm::omp::SPIRVGridValues, and T.

Referenced by llvm::OpenMPIRBuilder::createReductionsGPU(), and llvm::OpenMPIRBuilder::createTargetInit().

getInsertPointAfterInstr()

OpenMPIRBuilder::InsertPointTy getInsertPointAfterInstr ( Instruction * I )

static

Definition at line 3082 of file OMPIRBuilder.cpp.

References I, and IT.

getKmpcDistForStaticInitForType()

FunctionCallee getKmpcDistForStaticInitForType ( Type * Ty, Module & M, OpenMPIRBuilder & OMPBuilder )

static

Definition at line 5646 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::getOrCreateRuntimeFunction(), and llvm_unreachable.

getKmpcForDynamicFiniForType()

FunctionCallee getKmpcForDynamicFiniForType ( Type * Ty, Module & M, OpenMPIRBuilder & OMPBuilder )

static

Returns an LLVM function to call for finalizing the dynamic loop using depending on type.

Only i32 and i64 are supported by the runtime. Always interpret integers as unsigned similarly to CanonicalLoopInfo.

Definition at line 6391 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::getOrCreateRuntimeFunction(), and llvm_unreachable.

getKmpcForDynamicInitForType()

FunctionCallee getKmpcForDynamicInitForType ( Type * Ty, Module & M, OpenMPIRBuilder & OMPBuilder )

static

Returns an LLVM function to call for initializing loop bounds using OpenMP dynamic scheduling depending on type.

Only i32 and i64 are supported by the runtime. Always interpret integers as unsigned similarly to CanonicalLoopInfo.

Definition at line 6360 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::getOrCreateRuntimeFunction(), and llvm_unreachable.

getKmpcForDynamicNextForType()

FunctionCallee getKmpcForDynamicNextForType ( Type * Ty, Module & M, OpenMPIRBuilder & OMPBuilder )

static

Returns an LLVM function to call for updating the next loop using OpenMP dynamic scheduling depending on type.

Only i32 and i64 are supported by the runtime. Always interpret integers as unsigned similarly to CanonicalLoopInfo.

Definition at line 6376 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::getOrCreateRuntimeFunction(), and llvm_unreachable.

getKmpcForStaticInitForType()

FunctionCallee getKmpcForStaticInitForType ( Type * Ty, Module & M, OpenMPIRBuilder & OMPBuilder )

static

Definition at line 5662 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::getOrCreateRuntimeFunction(), and llvm_unreachable.

getKmpcForStaticLoopForType()

FunctionCallee getKmpcForStaticLoopForType ( Type * Ty, OpenMPIRBuilder * OMPBuilder, WorksharingLoopType LoopType )

static

Definition at line 6046 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::getOrCreateRuntimeFunction(), llvm_unreachable, and llvm::OpenMPIRBuilder::M.

Referenced by createTargetLoopWorkshareCall().

getOffloadingArrayType()

Type * getOffloadingArrayType ( Value * V )

static

Definition at line 9126 of file OMPIRBuilder.cpp.

References llvm::dyn_cast(), GEP, and llvm_unreachable.

Referenced by createTaskWithPrivatesTy(), and llvm::OpenMPIRBuilder::emitTargetTask().

getOpenMPBaseScheduleType()

OMPScheduleType getOpenMPBaseScheduleType ( llvm::omp::ScheduleKind ClauseKind, bool HasChunks, bool HasSimdModifier, bool HasDistScheduleChunks )

static

Determine which scheduling algorithm to use, determined from schedule clause arguments.

Definition at line 194 of file OMPIRBuilder.cpp.

References llvm::omp::BaseAuto, and llvm_unreachable.

Referenced by computeOpenMPScheduleType().

getOpenMPMonotonicityScheduleType()

OMPScheduleType getOpenMPMonotonicityScheduleType ( OMPScheduleType ScheduleType, bool HasSimdModifier, bool HasMonotonic, bool HasNonmonotonic, bool HasOrderedClause )

static

Adds monotonicity modifier flags to schedule type.

Definition at line 245 of file OMPIRBuilder.cpp.

References assert(), and llvm::omp::ModifierMask.

Referenced by computeOpenMPScheduleType().

getOpenMPOrderingScheduleType()

OMPScheduleType getOpenMPOrderingScheduleType ( OMPScheduleType BaseScheduleType, bool HasOrderedClause )

static

Adds ordering modifier flags to schedule type.

Definition at line 221 of file OMPIRBuilder.cpp.

References assert().

Referenced by computeOpenMPScheduleType().

getTargetKernelExecMode()

std::optional< omp::OMPTgtExecModeFlags > getTargetKernelExecMode ( Function & Kernel )

static

Given a function, if it represents the entry point of a target kernel, this returns the execution mode flags associated with that kernel.

Definition at line 300 of file OMPIRBuilder.cpp.

References Call, llvm::cast(), llvm::dyn_cast(), llvm::CallBase::getArgOperand(), and llvm::GlobalVariable::getInitializer().

Referenced by isGenericKernel().

hasGridValue()

bool hasGridValue ( const Triple & T )

static

Definition at line 172 of file OMPIRBuilder.cpp.

References T.

Referenced by llvm::OpenMPIRBuilder::createTargetInit().

hoistNonEntryAllocasToEntryBlock() [1/2]

void hoistNonEntryAllocasToEntryBlock ( llvm::BasicBlock & Block )

static

Definition at line 865 of file OMPIRBuilder.cpp.

References llvm::Block, llvm::dyn_cast(), llvm::AllocaInst::isArrayAllocation(), llvm::Instruction::moveBefore(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::OpenMPIRBuilder::finalize(), and hoistNonEntryAllocasToEntryBlock().

hoistNonEntryAllocasToEntryBlock() [2/2]

void hoistNonEntryAllocasToEntryBlock ( llvm::Function * Func )

static

Definition at line 887 of file OMPIRBuilder.cpp.

References hoistNonEntryAllocasToEntryBlock(), and llvm::DominatorTreeBase< NodeT, IsPostDom >::properlyDominates().

hostParallelCallback()

void hostParallelCallback ( OpenMPIRBuilder * OMPIRBuilder, Function & OutlinedFn, Function * OuterFn, Value * Ident, Value * IfCondition, Instruction * PrivTID, AllocaInst * PrivTIDAddr, const SmallVector< Instruction *, 4 > & ToBeDeleted )

static

Definition at line 1676 of file OMPIRBuilder.cpp.

References llvm::Function::addFnAttr(), llvm::Function::addParamAttr(), llvm::SmallVectorImpl< T >::append(), llvm::CallBase::arg_begin(), llvm::Function::arg_begin(), llvm::CallBase::arg_end(), llvm::Function::arg_size(), assert(), llvm::OpenMPIRBuilder::Builder, llvm::cast(), Cond, llvm::MDBuilder::createCallbackEncoding(), llvm::OpenMPIRBuilder::createRuntimeFunctionCall(), llvm::dbgs(), llvm::dyn_cast(), llvm::Instruction::eraseFromParent(), F, llvm::MDNode::get(), llvm::FunctionCallee::getCallee(), llvm::Constant::getNullValue(), llvm::OpenMPIRBuilder::getOrCreateRuntimeFunctionPtr(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), I, LLVM_DEBUG, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::Value::user_back().

Referenced by llvm::OpenMPIRBuilder::createParallel().

isConflictIP()

bool isConflictIP ( IRBuilder<>::InsertPoint IP1, IRBuilder<>::InsertPoint IP2 )

static

Return whether IP1 and IP2 are ambiguous, i.e.

that inserting instructions at position IP1 may change the meaning of IP2 or vice-versa. This is because an InsertPoint stores the instruction before something is inserted. For instance, if both point to the same instruction, two IRBuilders alternating creating instruction will cause the instructions to be interleaved.

Definition at line 92 of file OMPIRBuilder.cpp.

Referenced by llvm::OpenMPIRBuilder::createAtomicUpdate(), llvm::OpenMPIRBuilder::createParallel(), and llvm::OpenMPIRBuilder::createSections().

isGenericKernel()

bool isGenericKernel ( Function & Fn )

static

Definition at line 329 of file OMPIRBuilder.cpp.

References getTargetKernelExecMode(), and llvm::omp::OMP_TGT_EXEC_MODE_GENERIC.

Referenced by llvm::OpenMPIRBuilder::createParallel(), and targetParallelCallback().

isValidWorkshareLoopScheduleType()

bool isValidWorkshareLoopScheduleType ( OMPScheduleType SchedType )

static

Definition at line 99 of file OMPIRBuilder.cpp.

Referenced by computeOpenMPScheduleType().

loadSharedDataFromTaskDescriptor()

LoadInst * loadSharedDataFromTaskDescriptor ( OpenMPIRBuilder & OMPIRBuilder, IRBuilderBase & Builder, Value * TaskWithPrivates, Type * TaskWithPrivatesTy )

static

Given a task descriptor, TaskWithPrivates, return the pointer to the block of pointers containing shared data between the parent task and the created task.

Definition at line 8984 of file OMPIRBuilder.cpp.

References llvm::PointerType::getUnqual().

Referenced by llvm::OpenMPIRBuilder::emitTargetTask(), and emitTargetTaskProxyFunction().

mangleVectorParameters()

std::string mangleVectorParameters ( ArrayRef< llvm::OpenMPIRBuilder::DeclareSimdAttrTy > ParamAttrs )

static

Mangle the parameter part of the vector function name according to their OpenMP classification.

The mangling function is defined in section 4.5 of the AAVFABI(2021Q1).

Definition at line 12103 of file OMPIRBuilder.cpp.

References llvm::OpenMPIRBuilder::Linear, llvm::OpenMPIRBuilder::LinearRef, llvm::OpenMPIRBuilder::LinearUVal, llvm::OpenMPIRBuilder::LinearVal, ParamAttr, llvm::raw_svector_ostream::str(), llvm::OpenMPIRBuilder::Uniform, and llvm::OpenMPIRBuilder::Vector.

Referenced by llvm::OpenMPIRBuilder::emitAArch64DeclareSimdFunction(), and llvm::OpenMPIRBuilder::emitX86DeclareSimdFunction().

populateReductionFunction()

Error populateReductionFunction ( Function * ReductionFunc, ArrayRef< OpenMPIRBuilder::ReductionInfo > ReductionInfos, IRBuilder<> & Builder, ArrayRef< bool > IsByRef, bool IsGPU )

static

Definition at line 4780 of file OMPIRBuilder.cpp.

References llvm::BasicBlock::Create(), llvm::OpenMPIRBuilder::ReductionInfo::ElementType, llvm::enumerate(), llvm::ArrayType::get(), llvm::Function::getArg(), llvm::Module::getContext(), llvm::Value::getName(), llvm::GlobalValue::getParent(), llvm::Value::getType(), LHS, llvm::OpenMPIRBuilder::ReductionInfo::PrivateVariable, llvm::OpenMPIRBuilder::ReductionInfo::ReductionGen, RHS, llvm::ArrayRef< T >::size(), llvm::Error::success(), llvm::Expected< T >::takeError(), and llvm::OpenMPIRBuilder::ReductionInfo::Variable.

Referenced by llvm::OpenMPIRBuilder::createReductions().

raiseUserConstantDataAllocasToEntryBlock()

void raiseUserConstantDataAllocasToEntryBlock ( IRBuilderBase & Builder, Function * Function )

static

Definition at line 842 of file OMPIRBuilder.cpp.

References llvm::Function::begin(), llvm::Block, llvm::dyn_cast_if_present(), llvm::Function::end(), llvm::AllocaInst::getArraySize(), llvm::Function::getEntryBlock(), llvm::BasicBlock::getFirstNonPHIIt(), llvm::isa(), and llvm::Instruction::moveBeforePreserving().

Referenced by llvm::OpenMPIRBuilder::finalize().

redirectAllPredecessorsTo()

void redirectAllPredecessorsTo ( BasicBlock * OldTarget, BasicBlock * NewTarget, DebugLoc DL )

static

Redirect all edges that branch to OldTarget to NewTarget.

That is, after this OldTarget will be orphaned.

Definition at line 6539 of file OMPIRBuilder.cpp.

References DL, llvm::make_early_inc_range(), llvm::predecessors(), and redirectTo().

Referenced by llvm::OpenMPIRBuilder::collapseLoops(), llvm::OpenMPIRBuilder::fuseLoops(), and llvm::OpenMPIRBuilder::tileLoops().

redirectTo()

void redirectTo ( BasicBlock * Source, BasicBlock * Target, DebugLoc DL )

static

Make Source branch to Target.

Handles two situations:

• Source already has an unconditional branch.
• Source is a degenerate block (no terminator because the BB is the current head of the IR construction).

Definition at line 341 of file OMPIRBuilder.cpp.

References llvm::cast(), llvm::UncondBrInst::Create(), DL, and llvm::BasicBlock::removePredecessor().

Referenced by llvm::OpenMPIRBuilder::collapseLoops(), llvm::OpenMPIRBuilder::createIteratorLoop(), llvm::OpenMPIRBuilder::fuseLoops(), redirectAllPredecessorsTo(), and llvm::OpenMPIRBuilder::tileLoops().

removeASCastIfPresent()

Value * removeASCastIfPresent ( Value * V )

static

Definition at line 8791 of file OMPIRBuilder.cpp.

References llvm::cast(), and llvm::Operator::getOpcode().

Referenced by createOutlinedFunction().

removeUnusedBlocksFromParent()

void removeUnusedBlocksFromParent ( ArrayRef< BasicBlock * > BBs )

static

Determine which blocks in BBs are reachable from outside and remove the ones that are not reachable from the function.

Definition at line 6547 of file OMPIRBuilder.cpp.

References llvm::SmallPtrSetImpl< PtrType >::begin(), llvm::SmallPtrSetImpl< PtrType >::count(), llvm::DeleteDeadBlocks(), llvm::dyn_cast(), llvm::SmallPtrSetImpl< PtrType >::end(), llvm::from_range, llvm::SmallPtrSetImpl< PtrType >::remove_if(), and llvm::Value::uses().

Referenced by llvm::OpenMPIRBuilder::collapseLoops(), llvm::OpenMPIRBuilder::fuseLoops(), and llvm::OpenMPIRBuilder::tileLoops().

restoreIPandDebugLoc()

void restoreIPandDebugLoc ( llvm::IRBuilderBase & Builder, llvm::IRBuilderBase::InsertPoint IP )

static

This is wrapper over IRBuilderBase::restoreIP that also restores the current debug location to the last instruction in the specified basic block if the insert point points to the end of the block.

Definition at line 163 of file OMPIRBuilder.cpp.

References llvm::BasicBlock::back(), llvm::BasicBlock::empty(), llvm::BasicBlock::end(), llvm::Instruction::getStableDebugLoc(), and I.

Referenced by llvm::OpenMPIRBuilder::createTargetData(), and llvm::OpenMPIRBuilder::emitOffloadingArrays().

targetParallelCallback()

void targetParallelCallback ( OpenMPIRBuilder * OMPIRBuilder, Function & OutlinedFn, Function * OuterFn, BasicBlock * OuterAllocaBB, Value * Ident, Value * IfCondition, Value * NumThreads, Instruction * PrivTID, AllocaInst * PrivTIDAddr, Value * ThreadID, const SmallVector< Instruction *, 4 > & ToBeDeleted )

static

Definition at line 1578 of file OMPIRBuilder.cpp.

References llvm::Function::addFnAttr(), llvm::Function::addParamAttr(), llvm::CallBase::arg_begin(), llvm::Function::arg_begin(), llvm::Function::arg_size(), assert(), llvm::OpenMPIRBuilder::Builder, llvm::cast(), Cond, llvm::OpenMPIRBuilder::createRuntimeFunctionCall(), createTargetParallelWrapper(), llvm::dbgs(), llvm::Instruction::eraseFromParent(), llvm::ArrayType::get(), llvm::AllocaInst::getAddressSpace(), llvm::BasicBlock::getFirstInsertionPt(), llvm::Constant::getNullValue(), llvm::OpenMPIRBuilder::getOrCreateRuntimeFunctionPtr(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), I, isGenericKernel(), LLVM_DEBUG, and llvm::Value::user_back().

Referenced by llvm::OpenMPIRBuilder::createParallel().

updateNVPTXAttr()

void updateNVPTXAttr ( Function & Kernel, StringRef Name, int32_t Value, bool Min )

static

Definition at line 8295 of file OMPIRBuilder.cpp.

References llvm::utostr().

Referenced by llvm::OpenMPIRBuilder::writeThreadBoundsForKernel().

workshareLoopTargetCallback()

void workshareLoopTargetCallback ( OpenMPIRBuilder * OMPIRBuilder, CanonicalLoopInfo * CLI, Value * Ident, Function & OutlinedFn, const SmallVector< Instruction *, 4 > & ToBeDeleted, WorksharingLoopType LoopType, bool NoLoop )

static

Definition at line 6124 of file OMPIRBuilder.cpp.

References llvm::CallBase::arg_size(), assert(), llvm::BasicBlock::begin(), llvm::OpenMPIRBuilder::Builder, llvm::OpenMPIRBuilder::OutlineInfo::collectBlocks(), createTargetLoopWorkshareCall(), llvm::DeleteDeadBlocks(), llvm::dyn_cast(), llvm::BasicBlock::end(), llvm::OpenMPIRBuilder::OutlineInfo::EntryBB, llvm::Instruction::eraseFromParent(), llvm::OpenMPIRBuilder::OutlineInfo::ExitBB, llvm::CallBase::getArgOperand(), llvm::CanonicalLoopInfo::getBody(), llvm::Instruction::getDebugLoc(), llvm::CanonicalLoopInfo::getExit(), llvm::CanonicalLoopInfo::getHeader(), llvm::Constant::getNullValue(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::CanonicalLoopInfo::getPreheader(), llvm::BasicBlock::getTerminator(), llvm::CanonicalLoopInfo::getTripCount(), llvm::Value::getUniqueUndroppableUser(), llvm::CanonicalLoopInfo::invalidate(), and llvm::BasicBlock::splice().

Variable Documentation

OptimisticAttributes

cl::opt< bool > OptimisticAttributes("openmp-ir-builder-optimistic-attributes", cl::Hidden, cl::desc("Use optimistic attributes describing " "'as-if' properties of runtime calls."), cl::init(false)) ( "openmp-ir-builder-optimistic-attributes" , cl::Hidden , cl::desc("Use optimistic attributes describing " "'as-if' properties of runtime calls.") , cl::init(false)  )

static

UnrollThresholdFactor

cl::opt< double > UnrollThresholdFactor("openmp-ir-builder-unroll-threshold-factor", cl::Hidden, cl::desc("Factor for the unroll threshold to account for code " "simplifications still taking place"), cl::init(1.5)) ( "openmp-ir-builder-unroll-threshold-factor" , cl::Hidden , cl::desc("Factor for the unroll threshold to account for code " "simplifications still taking place") , cl::init(1.5)  )

static

Referenced by computeHeuristicUnrollFactor().