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Diffstat (limited to 'contrib/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp | 3555 |
1 files changed, 3555 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp b/contrib/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp new file mode 100644 index 0000000..0ba7e06 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp @@ -0,0 +1,3555 @@ +//===----- CGOpenMPRuntime.cpp - Interface to OpenMP Runtimes -------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This provides a class for OpenMP runtime code generation. +// +//===----------------------------------------------------------------------===// + +#include "CGOpenMPRuntime.h" +#include "CodeGenFunction.h" +#include "CGCleanup.h" +#include "clang/AST/Decl.h" +#include "clang/AST/StmtOpenMP.h" +#include "llvm/ADT/ArrayRef.h" +#include "llvm/IR/CallSite.h" +#include "llvm/IR/DerivedTypes.h" +#include "llvm/IR/GlobalValue.h" +#include "llvm/IR/Value.h" +#include "llvm/Support/raw_ostream.h" +#include <cassert> + +using namespace clang; +using namespace CodeGen; + +namespace { +/// \brief Base class for handling code generation inside OpenMP regions. +class CGOpenMPRegionInfo : public CodeGenFunction::CGCapturedStmtInfo { +public: + /// \brief Kinds of OpenMP regions used in codegen. + enum CGOpenMPRegionKind { + /// \brief Region with outlined function for standalone 'parallel' + /// directive. + ParallelOutlinedRegion, + /// \brief Region with outlined function for standalone 'task' directive. + TaskOutlinedRegion, + /// \brief Region for constructs that do not require function outlining, + /// like 'for', 'sections', 'atomic' etc. directives. + InlinedRegion, + /// \brief Region with outlined function for standalone 'target' directive. + TargetRegion, + }; + + CGOpenMPRegionInfo(const CapturedStmt &CS, + const CGOpenMPRegionKind RegionKind, + const RegionCodeGenTy &CodeGen, OpenMPDirectiveKind Kind, + bool HasCancel) + : CGCapturedStmtInfo(CS, CR_OpenMP), RegionKind(RegionKind), + CodeGen(CodeGen), Kind(Kind), HasCancel(HasCancel) {} + + CGOpenMPRegionInfo(const CGOpenMPRegionKind RegionKind, + const RegionCodeGenTy &CodeGen, OpenMPDirectiveKind Kind, + bool HasCancel) + : CGCapturedStmtInfo(CR_OpenMP), RegionKind(RegionKind), CodeGen(CodeGen), + Kind(Kind), HasCancel(HasCancel) {} + + /// \brief Get a variable or parameter for storing global thread id + /// inside OpenMP construct. + virtual const VarDecl *getThreadIDVariable() const = 0; + + /// \brief Emit the captured statement body. + void EmitBody(CodeGenFunction &CGF, const Stmt *S) override; + + /// \brief Get an LValue for the current ThreadID variable. + /// \return LValue for thread id variable. This LValue always has type int32*. + virtual LValue getThreadIDVariableLValue(CodeGenFunction &CGF); + + CGOpenMPRegionKind getRegionKind() const { return RegionKind; } + + OpenMPDirectiveKind getDirectiveKind() const { return Kind; } + + bool hasCancel() const { return HasCancel; } + + static bool classof(const CGCapturedStmtInfo *Info) { + return Info->getKind() == CR_OpenMP; + } + +protected: + CGOpenMPRegionKind RegionKind; + const RegionCodeGenTy &CodeGen; + OpenMPDirectiveKind Kind; + bool HasCancel; +}; + +/// \brief API for captured statement code generation in OpenMP constructs. +class CGOpenMPOutlinedRegionInfo : public CGOpenMPRegionInfo { +public: + CGOpenMPOutlinedRegionInfo(const CapturedStmt &CS, const VarDecl *ThreadIDVar, + const RegionCodeGenTy &CodeGen, + OpenMPDirectiveKind Kind, bool HasCancel) + : CGOpenMPRegionInfo(CS, ParallelOutlinedRegion, CodeGen, Kind, + HasCancel), + ThreadIDVar(ThreadIDVar) { + assert(ThreadIDVar != nullptr && "No ThreadID in OpenMP region."); + } + /// \brief Get a variable or parameter for storing global thread id + /// inside OpenMP construct. + const VarDecl *getThreadIDVariable() const override { return ThreadIDVar; } + + /// \brief Get the name of the capture helper. + StringRef getHelperName() const override { return ".omp_outlined."; } + + static bool classof(const CGCapturedStmtInfo *Info) { + return CGOpenMPRegionInfo::classof(Info) && + cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == + ParallelOutlinedRegion; + } + +private: + /// \brief A variable or parameter storing global thread id for OpenMP + /// constructs. + const VarDecl *ThreadIDVar; +}; + +/// \brief API for captured statement code generation in OpenMP constructs. +class CGOpenMPTaskOutlinedRegionInfo : public CGOpenMPRegionInfo { +public: + CGOpenMPTaskOutlinedRegionInfo(const CapturedStmt &CS, + const VarDecl *ThreadIDVar, + const RegionCodeGenTy &CodeGen, + OpenMPDirectiveKind Kind, bool HasCancel) + : CGOpenMPRegionInfo(CS, TaskOutlinedRegion, CodeGen, Kind, HasCancel), + ThreadIDVar(ThreadIDVar) { + assert(ThreadIDVar != nullptr && "No ThreadID in OpenMP region."); + } + /// \brief Get a variable or parameter for storing global thread id + /// inside OpenMP construct. + const VarDecl *getThreadIDVariable() const override { return ThreadIDVar; } + + /// \brief Get an LValue for the current ThreadID variable. + LValue getThreadIDVariableLValue(CodeGenFunction &CGF) override; + + /// \brief Get the name of the capture helper. + StringRef getHelperName() const override { return ".omp_outlined."; } + + static bool classof(const CGCapturedStmtInfo *Info) { + return CGOpenMPRegionInfo::classof(Info) && + cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == + TaskOutlinedRegion; + } + +private: + /// \brief A variable or parameter storing global thread id for OpenMP + /// constructs. + const VarDecl *ThreadIDVar; +}; + +/// \brief API for inlined captured statement code generation in OpenMP +/// constructs. +class CGOpenMPInlinedRegionInfo : public CGOpenMPRegionInfo { +public: + CGOpenMPInlinedRegionInfo(CodeGenFunction::CGCapturedStmtInfo *OldCSI, + const RegionCodeGenTy &CodeGen, + OpenMPDirectiveKind Kind, bool HasCancel) + : CGOpenMPRegionInfo(InlinedRegion, CodeGen, Kind, HasCancel), + OldCSI(OldCSI), + OuterRegionInfo(dyn_cast_or_null<CGOpenMPRegionInfo>(OldCSI)) {} + // \brief Retrieve the value of the context parameter. + llvm::Value *getContextValue() const override { + if (OuterRegionInfo) + return OuterRegionInfo->getContextValue(); + llvm_unreachable("No context value for inlined OpenMP region"); + } + void setContextValue(llvm::Value *V) override { + if (OuterRegionInfo) { + OuterRegionInfo->setContextValue(V); + return; + } + llvm_unreachable("No context value for inlined OpenMP region"); + } + /// \brief Lookup the captured field decl for a variable. + const FieldDecl *lookup(const VarDecl *VD) const override { + if (OuterRegionInfo) + return OuterRegionInfo->lookup(VD); + // If there is no outer outlined region,no need to lookup in a list of + // captured variables, we can use the original one. + return nullptr; + } + FieldDecl *getThisFieldDecl() const override { + if (OuterRegionInfo) + return OuterRegionInfo->getThisFieldDecl(); + return nullptr; + } + /// \brief Get a variable or parameter for storing global thread id + /// inside OpenMP construct. + const VarDecl *getThreadIDVariable() const override { + if (OuterRegionInfo) + return OuterRegionInfo->getThreadIDVariable(); + return nullptr; + } + + /// \brief Get the name of the capture helper. + StringRef getHelperName() const override { + if (auto *OuterRegionInfo = getOldCSI()) + return OuterRegionInfo->getHelperName(); + llvm_unreachable("No helper name for inlined OpenMP construct"); + } + + CodeGenFunction::CGCapturedStmtInfo *getOldCSI() const { return OldCSI; } + + static bool classof(const CGCapturedStmtInfo *Info) { + return CGOpenMPRegionInfo::classof(Info) && + cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == InlinedRegion; + } + +private: + /// \brief CodeGen info about outer OpenMP region. + CodeGenFunction::CGCapturedStmtInfo *OldCSI; + CGOpenMPRegionInfo *OuterRegionInfo; +}; + +/// \brief API for captured statement code generation in OpenMP target +/// constructs. For this captures, implicit parameters are used instead of the +/// captured fields. +class CGOpenMPTargetRegionInfo : public CGOpenMPRegionInfo { +public: + CGOpenMPTargetRegionInfo(const CapturedStmt &CS, + const RegionCodeGenTy &CodeGen) + : CGOpenMPRegionInfo(CS, TargetRegion, CodeGen, OMPD_target, + /*HasCancel = */ false) {} + + /// \brief This is unused for target regions because each starts executing + /// with a single thread. + const VarDecl *getThreadIDVariable() const override { return nullptr; } + + /// \brief Get the name of the capture helper. + StringRef getHelperName() const override { return ".omp_offloading."; } + + static bool classof(const CGCapturedStmtInfo *Info) { + return CGOpenMPRegionInfo::classof(Info) && + cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == TargetRegion; + } +}; + +/// \brief RAII for emitting code of OpenMP constructs. +class InlinedOpenMPRegionRAII { + CodeGenFunction &CGF; + +public: + /// \brief Constructs region for combined constructs. + /// \param CodeGen Code generation sequence for combined directives. Includes + /// a list of functions used for code generation of implicitly inlined + /// regions. + InlinedOpenMPRegionRAII(CodeGenFunction &CGF, const RegionCodeGenTy &CodeGen, + OpenMPDirectiveKind Kind, bool HasCancel) + : CGF(CGF) { + // Start emission for the construct. + CGF.CapturedStmtInfo = new CGOpenMPInlinedRegionInfo( + CGF.CapturedStmtInfo, CodeGen, Kind, HasCancel); + } + ~InlinedOpenMPRegionRAII() { + // Restore original CapturedStmtInfo only if we're done with code emission. + auto *OldCSI = + cast<CGOpenMPInlinedRegionInfo>(CGF.CapturedStmtInfo)->getOldCSI(); + delete CGF.CapturedStmtInfo; + CGF.CapturedStmtInfo = OldCSI; + } +}; + +} // anonymous namespace + +static LValue emitLoadOfPointerLValue(CodeGenFunction &CGF, Address PtrAddr, + QualType Ty) { + AlignmentSource Source; + CharUnits Align = CGF.getNaturalPointeeTypeAlignment(Ty, &Source); + return CGF.MakeAddrLValue(Address(CGF.Builder.CreateLoad(PtrAddr), Align), + Ty->getPointeeType(), Source); +} + +LValue CGOpenMPRegionInfo::getThreadIDVariableLValue(CodeGenFunction &CGF) { + return emitLoadOfPointerLValue(CGF, + CGF.GetAddrOfLocalVar(getThreadIDVariable()), + getThreadIDVariable()->getType()); +} + +void CGOpenMPRegionInfo::EmitBody(CodeGenFunction &CGF, const Stmt * /*S*/) { + if (!CGF.HaveInsertPoint()) + return; + // 1.2.2 OpenMP Language Terminology + // Structured block - An executable statement with a single entry at the + // top and a single exit at the bottom. + // The point of exit cannot be a branch out of the structured block. + // longjmp() and throw() must not violate the entry/exit criteria. + CGF.EHStack.pushTerminate(); + { + CodeGenFunction::RunCleanupsScope Scope(CGF); + CodeGen(CGF); + } + CGF.EHStack.popTerminate(); +} + +LValue CGOpenMPTaskOutlinedRegionInfo::getThreadIDVariableLValue( + CodeGenFunction &CGF) { + return CGF.MakeAddrLValue(CGF.GetAddrOfLocalVar(getThreadIDVariable()), + getThreadIDVariable()->getType(), + AlignmentSource::Decl); +} + +CGOpenMPRuntime::CGOpenMPRuntime(CodeGenModule &CGM) + : CGM(CGM), DefaultOpenMPPSource(nullptr), KmpRoutineEntryPtrTy(nullptr) { + IdentTy = llvm::StructType::create( + "ident_t", CGM.Int32Ty /* reserved_1 */, CGM.Int32Ty /* flags */, + CGM.Int32Ty /* reserved_2 */, CGM.Int32Ty /* reserved_3 */, + CGM.Int8PtrTy /* psource */, nullptr); + // Build void (*kmpc_micro)(kmp_int32 *global_tid, kmp_int32 *bound_tid,...) + llvm::Type *MicroParams[] = {llvm::PointerType::getUnqual(CGM.Int32Ty), + llvm::PointerType::getUnqual(CGM.Int32Ty)}; + Kmpc_MicroTy = llvm::FunctionType::get(CGM.VoidTy, MicroParams, true); + KmpCriticalNameTy = llvm::ArrayType::get(CGM.Int32Ty, /*NumElements*/ 8); +} + +void CGOpenMPRuntime::clear() { + InternalVars.clear(); +} + +// Layout information for ident_t. +static CharUnits getIdentAlign(CodeGenModule &CGM) { + return CGM.getPointerAlign(); +} +static CharUnits getIdentSize(CodeGenModule &CGM) { + assert((4 * CGM.getPointerSize()).isMultipleOf(CGM.getPointerAlign())); + return CharUnits::fromQuantity(16) + CGM.getPointerSize(); +} +static CharUnits getOffsetOfIdentField(CGOpenMPRuntime::IdentFieldIndex Field) { + // All the fields except the last are i32, so this works beautifully. + return unsigned(Field) * CharUnits::fromQuantity(4); +} +static Address createIdentFieldGEP(CodeGenFunction &CGF, Address Addr, + CGOpenMPRuntime::IdentFieldIndex Field, + const llvm::Twine &Name = "") { + auto Offset = getOffsetOfIdentField(Field); + return CGF.Builder.CreateStructGEP(Addr, Field, Offset, Name); +} + +llvm::Value *CGOpenMPRuntime::emitParallelOutlinedFunction( + const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, + OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) { + assert(ThreadIDVar->getType()->isPointerType() && + "thread id variable must be of type kmp_int32 *"); + const CapturedStmt *CS = cast<CapturedStmt>(D.getAssociatedStmt()); + CodeGenFunction CGF(CGM, true); + bool HasCancel = false; + if (auto *OPD = dyn_cast<OMPParallelDirective>(&D)) + HasCancel = OPD->hasCancel(); + else if (auto *OPSD = dyn_cast<OMPParallelSectionsDirective>(&D)) + HasCancel = OPSD->hasCancel(); + else if (auto *OPFD = dyn_cast<OMPParallelForDirective>(&D)) + HasCancel = OPFD->hasCancel(); + CGOpenMPOutlinedRegionInfo CGInfo(*CS, ThreadIDVar, CodeGen, InnermostKind, + HasCancel); + CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); + return CGF.GenerateOpenMPCapturedStmtFunction(*CS); +} + +llvm::Value *CGOpenMPRuntime::emitTaskOutlinedFunction( + const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, + OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) { + assert(!ThreadIDVar->getType()->isPointerType() && + "thread id variable must be of type kmp_int32 for tasks"); + auto *CS = cast<CapturedStmt>(D.getAssociatedStmt()); + CodeGenFunction CGF(CGM, true); + CGOpenMPTaskOutlinedRegionInfo CGInfo(*CS, ThreadIDVar, CodeGen, + InnermostKind, + cast<OMPTaskDirective>(D).hasCancel()); + CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); + return CGF.GenerateCapturedStmtFunction(*CS); +} + +Address CGOpenMPRuntime::getOrCreateDefaultLocation(OpenMPLocationFlags Flags) { + CharUnits Align = getIdentAlign(CGM); + llvm::Value *Entry = OpenMPDefaultLocMap.lookup(Flags); + if (!Entry) { + if (!DefaultOpenMPPSource) { + // Initialize default location for psource field of ident_t structure of + // all ident_t objects. Format is ";file;function;line;column;;". + // Taken from + // http://llvm.org/svn/llvm-project/openmp/trunk/runtime/src/kmp_str.c + DefaultOpenMPPSource = + CGM.GetAddrOfConstantCString(";unknown;unknown;0;0;;").getPointer(); + DefaultOpenMPPSource = + llvm::ConstantExpr::getBitCast(DefaultOpenMPPSource, CGM.Int8PtrTy); + } + auto DefaultOpenMPLocation = new llvm::GlobalVariable( + CGM.getModule(), IdentTy, /*isConstant*/ true, + llvm::GlobalValue::PrivateLinkage, /*Initializer*/ nullptr); + DefaultOpenMPLocation->setUnnamedAddr(true); + DefaultOpenMPLocation->setAlignment(Align.getQuantity()); + + llvm::Constant *Zero = llvm::ConstantInt::get(CGM.Int32Ty, 0, true); + llvm::Constant *Values[] = {Zero, + llvm::ConstantInt::get(CGM.Int32Ty, Flags), + Zero, Zero, DefaultOpenMPPSource}; + llvm::Constant *Init = llvm::ConstantStruct::get(IdentTy, Values); + DefaultOpenMPLocation->setInitializer(Init); + OpenMPDefaultLocMap[Flags] = Entry = DefaultOpenMPLocation; + } + return Address(Entry, Align); +} + +llvm::Value *CGOpenMPRuntime::emitUpdateLocation(CodeGenFunction &CGF, + SourceLocation Loc, + OpenMPLocationFlags Flags) { + // If no debug info is generated - return global default location. + if (CGM.getCodeGenOpts().getDebugInfo() == CodeGenOptions::NoDebugInfo || + Loc.isInvalid()) + return getOrCreateDefaultLocation(Flags).getPointer(); + + assert(CGF.CurFn && "No function in current CodeGenFunction."); + + Address LocValue = Address::invalid(); + auto I = OpenMPLocThreadIDMap.find(CGF.CurFn); + if (I != OpenMPLocThreadIDMap.end()) + LocValue = Address(I->second.DebugLoc, getIdentAlign(CGF.CGM)); + + // OpenMPLocThreadIDMap may have null DebugLoc and non-null ThreadID, if + // GetOpenMPThreadID was called before this routine. + if (!LocValue.isValid()) { + // Generate "ident_t .kmpc_loc.addr;" + Address AI = CGF.CreateTempAlloca(IdentTy, getIdentAlign(CGF.CGM), + ".kmpc_loc.addr"); + auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); + Elem.second.DebugLoc = AI.getPointer(); + LocValue = AI; + + CGBuilderTy::InsertPointGuard IPG(CGF.Builder); + CGF.Builder.SetInsertPoint(CGF.AllocaInsertPt); + CGF.Builder.CreateMemCpy(LocValue, getOrCreateDefaultLocation(Flags), + CGM.getSize(getIdentSize(CGF.CGM))); + } + + // char **psource = &.kmpc_loc_<flags>.addr.psource; + Address PSource = createIdentFieldGEP(CGF, LocValue, IdentField_PSource); + + auto OMPDebugLoc = OpenMPDebugLocMap.lookup(Loc.getRawEncoding()); + if (OMPDebugLoc == nullptr) { + SmallString<128> Buffer2; + llvm::raw_svector_ostream OS2(Buffer2); + // Build debug location + PresumedLoc PLoc = CGF.getContext().getSourceManager().getPresumedLoc(Loc); + OS2 << ";" << PLoc.getFilename() << ";"; + if (const FunctionDecl *FD = + dyn_cast_or_null<FunctionDecl>(CGF.CurFuncDecl)) { + OS2 << FD->getQualifiedNameAsString(); + } + OS2 << ";" << PLoc.getLine() << ";" << PLoc.getColumn() << ";;"; + OMPDebugLoc = CGF.Builder.CreateGlobalStringPtr(OS2.str()); + OpenMPDebugLocMap[Loc.getRawEncoding()] = OMPDebugLoc; + } + // *psource = ";<File>;<Function>;<Line>;<Column>;;"; + CGF.Builder.CreateStore(OMPDebugLoc, PSource); + + // Our callers always pass this to a runtime function, so for + // convenience, go ahead and return a naked pointer. + return LocValue.getPointer(); +} + +llvm::Value *CGOpenMPRuntime::getThreadID(CodeGenFunction &CGF, + SourceLocation Loc) { + assert(CGF.CurFn && "No function in current CodeGenFunction."); + + llvm::Value *ThreadID = nullptr; + // Check whether we've already cached a load of the thread id in this + // function. + auto I = OpenMPLocThreadIDMap.find(CGF.CurFn); + if (I != OpenMPLocThreadIDMap.end()) { + ThreadID = I->second.ThreadID; + if (ThreadID != nullptr) + return ThreadID; + } + if (auto OMPRegionInfo = + dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) { + if (OMPRegionInfo->getThreadIDVariable()) { + // Check if this an outlined function with thread id passed as argument. + auto LVal = OMPRegionInfo->getThreadIDVariableLValue(CGF); + ThreadID = CGF.EmitLoadOfLValue(LVal, Loc).getScalarVal(); + // If value loaded in entry block, cache it and use it everywhere in + // function. + if (CGF.Builder.GetInsertBlock() == CGF.AllocaInsertPt->getParent()) { + auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); + Elem.second.ThreadID = ThreadID; + } + return ThreadID; + } + } + + // This is not an outlined function region - need to call __kmpc_int32 + // kmpc_global_thread_num(ident_t *loc). + // Generate thread id value and cache this value for use across the + // function. + CGBuilderTy::InsertPointGuard IPG(CGF.Builder); + CGF.Builder.SetInsertPoint(CGF.AllocaInsertPt); + ThreadID = + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_global_thread_num), + emitUpdateLocation(CGF, Loc)); + auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); + Elem.second.ThreadID = ThreadID; + return ThreadID; +} + +void CGOpenMPRuntime::functionFinished(CodeGenFunction &CGF) { + assert(CGF.CurFn && "No function in current CodeGenFunction."); + if (OpenMPLocThreadIDMap.count(CGF.CurFn)) + OpenMPLocThreadIDMap.erase(CGF.CurFn); +} + +llvm::Type *CGOpenMPRuntime::getIdentTyPointerTy() { + return llvm::PointerType::getUnqual(IdentTy); +} + +llvm::Type *CGOpenMPRuntime::getKmpc_MicroPointerTy() { + return llvm::PointerType::getUnqual(Kmpc_MicroTy); +} + +llvm::Constant * +CGOpenMPRuntime::createRuntimeFunction(OpenMPRTLFunction Function) { + llvm::Constant *RTLFn = nullptr; + switch (Function) { + case OMPRTL__kmpc_fork_call: { + // Build void __kmpc_fork_call(ident_t *loc, kmp_int32 argc, kmpc_micro + // microtask, ...); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + getKmpc_MicroPointerTy()}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ true); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_fork_call"); + break; + } + case OMPRTL__kmpc_global_thread_num: { + // Build kmp_int32 __kmpc_global_thread_num(ident_t *loc); + llvm::Type *TypeParams[] = {getIdentTyPointerTy()}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_global_thread_num"); + break; + } + case OMPRTL__kmpc_threadprivate_cached: { + // Build void *__kmpc_threadprivate_cached(ident_t *loc, + // kmp_int32 global_tid, void *data, size_t size, void ***cache); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + CGM.VoidPtrTy, CGM.SizeTy, + CGM.VoidPtrTy->getPointerTo()->getPointerTo()}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_threadprivate_cached"); + break; + } + case OMPRTL__kmpc_critical: { + // Build void __kmpc_critical(ident_t *loc, kmp_int32 global_tid, + // kmp_critical_name *crit); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), CGM.Int32Ty, + llvm::PointerType::getUnqual(KmpCriticalNameTy)}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_critical"); + break; + } + case OMPRTL__kmpc_critical_with_hint: { + // Build void __kmpc_critical_with_hint(ident_t *loc, kmp_int32 global_tid, + // kmp_critical_name *crit, uintptr_t hint); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + llvm::PointerType::getUnqual(KmpCriticalNameTy), + CGM.IntPtrTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_critical_with_hint"); + break; + } + case OMPRTL__kmpc_threadprivate_register: { + // Build void __kmpc_threadprivate_register(ident_t *, void *data, + // kmpc_ctor ctor, kmpc_cctor cctor, kmpc_dtor dtor); + // typedef void *(*kmpc_ctor)(void *); + auto KmpcCtorTy = + llvm::FunctionType::get(CGM.VoidPtrTy, CGM.VoidPtrTy, + /*isVarArg*/ false)->getPointerTo(); + // typedef void *(*kmpc_cctor)(void *, void *); + llvm::Type *KmpcCopyCtorTyArgs[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; + auto KmpcCopyCtorTy = + llvm::FunctionType::get(CGM.VoidPtrTy, KmpcCopyCtorTyArgs, + /*isVarArg*/ false)->getPointerTo(); + // typedef void (*kmpc_dtor)(void *); + auto KmpcDtorTy = + llvm::FunctionType::get(CGM.VoidTy, CGM.VoidPtrTy, /*isVarArg*/ false) + ->getPointerTo(); + llvm::Type *FnTyArgs[] = {getIdentTyPointerTy(), CGM.VoidPtrTy, KmpcCtorTy, + KmpcCopyCtorTy, KmpcDtorTy}; + auto FnTy = llvm::FunctionType::get(CGM.VoidTy, FnTyArgs, + /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_threadprivate_register"); + break; + } + case OMPRTL__kmpc_end_critical: { + // Build void __kmpc_end_critical(ident_t *loc, kmp_int32 global_tid, + // kmp_critical_name *crit); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), CGM.Int32Ty, + llvm::PointerType::getUnqual(KmpCriticalNameTy)}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_critical"); + break; + } + case OMPRTL__kmpc_cancel_barrier: { + // Build kmp_int32 __kmpc_cancel_barrier(ident_t *loc, kmp_int32 + // global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name*/ "__kmpc_cancel_barrier"); + break; + } + case OMPRTL__kmpc_barrier: { + // Build void __kmpc_barrier(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name*/ "__kmpc_barrier"); + break; + } + case OMPRTL__kmpc_for_static_fini: { + // Build void __kmpc_for_static_fini(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_for_static_fini"); + break; + } + case OMPRTL__kmpc_push_num_threads: { + // Build void __kmpc_push_num_threads(ident_t *loc, kmp_int32 global_tid, + // kmp_int32 num_threads) + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_push_num_threads"); + break; + } + case OMPRTL__kmpc_serialized_parallel: { + // Build void __kmpc_serialized_parallel(ident_t *loc, kmp_int32 + // global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_serialized_parallel"); + break; + } + case OMPRTL__kmpc_end_serialized_parallel: { + // Build void __kmpc_end_serialized_parallel(ident_t *loc, kmp_int32 + // global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_serialized_parallel"); + break; + } + case OMPRTL__kmpc_flush: { + // Build void __kmpc_flush(ident_t *loc); + llvm::Type *TypeParams[] = {getIdentTyPointerTy()}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_flush"); + break; + } + case OMPRTL__kmpc_master: { + // Build kmp_int32 __kmpc_master(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_master"); + break; + } + case OMPRTL__kmpc_end_master: { + // Build void __kmpc_end_master(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_master"); + break; + } + case OMPRTL__kmpc_omp_taskyield: { + // Build kmp_int32 __kmpc_omp_taskyield(ident_t *, kmp_int32 global_tid, + // int end_part); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_taskyield"); + break; + } + case OMPRTL__kmpc_single: { + // Build kmp_int32 __kmpc_single(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_single"); + break; + } + case OMPRTL__kmpc_end_single: { + // Build void __kmpc_end_single(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_single"); + break; + } + case OMPRTL__kmpc_omp_task_alloc: { + // Build kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 gtid, + // kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, + // kmp_routine_entry_t *task_entry); + assert(KmpRoutineEntryPtrTy != nullptr && + "Type kmp_routine_entry_t must be created."); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.Int32Ty, + CGM.SizeTy, CGM.SizeTy, KmpRoutineEntryPtrTy}; + // Return void * and then cast to particular kmp_task_t type. + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task_alloc"); + break; + } + case OMPRTL__kmpc_omp_task: { + // Build kmp_int32 __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t + // *new_task); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + CGM.VoidPtrTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task"); + break; + } + case OMPRTL__kmpc_copyprivate: { + // Build void __kmpc_copyprivate(ident_t *loc, kmp_int32 global_tid, + // size_t cpy_size, void *cpy_data, void(*cpy_func)(void *, void *), + // kmp_int32 didit); + llvm::Type *CpyTypeParams[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; + auto *CpyFnTy = + llvm::FunctionType::get(CGM.VoidTy, CpyTypeParams, /*isVarArg=*/false); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.SizeTy, + CGM.VoidPtrTy, CpyFnTy->getPointerTo(), + CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_copyprivate"); + break; + } + case OMPRTL__kmpc_reduce: { + // Build kmp_int32 __kmpc_reduce(ident_t *loc, kmp_int32 global_tid, + // kmp_int32 num_vars, size_t reduce_size, void *reduce_data, void + // (*reduce_func)(void *lhs_data, void *rhs_data), kmp_critical_name *lck); + llvm::Type *ReduceTypeParams[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; + auto *ReduceFnTy = llvm::FunctionType::get(CGM.VoidTy, ReduceTypeParams, + /*isVarArg=*/false); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), CGM.Int32Ty, CGM.Int32Ty, CGM.SizeTy, + CGM.VoidPtrTy, ReduceFnTy->getPointerTo(), + llvm::PointerType::getUnqual(KmpCriticalNameTy)}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_reduce"); + break; + } + case OMPRTL__kmpc_reduce_nowait: { + // Build kmp_int32 __kmpc_reduce_nowait(ident_t *loc, kmp_int32 + // global_tid, kmp_int32 num_vars, size_t reduce_size, void *reduce_data, + // void (*reduce_func)(void *lhs_data, void *rhs_data), kmp_critical_name + // *lck); + llvm::Type *ReduceTypeParams[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; + auto *ReduceFnTy = llvm::FunctionType::get(CGM.VoidTy, ReduceTypeParams, + /*isVarArg=*/false); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), CGM.Int32Ty, CGM.Int32Ty, CGM.SizeTy, + CGM.VoidPtrTy, ReduceFnTy->getPointerTo(), + llvm::PointerType::getUnqual(KmpCriticalNameTy)}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_reduce_nowait"); + break; + } + case OMPRTL__kmpc_end_reduce: { + // Build void __kmpc_end_reduce(ident_t *loc, kmp_int32 global_tid, + // kmp_critical_name *lck); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), CGM.Int32Ty, + llvm::PointerType::getUnqual(KmpCriticalNameTy)}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_reduce"); + break; + } + case OMPRTL__kmpc_end_reduce_nowait: { + // Build __kmpc_end_reduce_nowait(ident_t *loc, kmp_int32 global_tid, + // kmp_critical_name *lck); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), CGM.Int32Ty, + llvm::PointerType::getUnqual(KmpCriticalNameTy)}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = + CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_reduce_nowait"); + break; + } + case OMPRTL__kmpc_omp_task_begin_if0: { + // Build void __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t + // *new_task); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + CGM.VoidPtrTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = + CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task_begin_if0"); + break; + } + case OMPRTL__kmpc_omp_task_complete_if0: { + // Build void __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t + // *new_task); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + CGM.VoidPtrTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, + /*Name=*/"__kmpc_omp_task_complete_if0"); + break; + } + case OMPRTL__kmpc_ordered: { + // Build void __kmpc_ordered(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_ordered"); + break; + } + case OMPRTL__kmpc_end_ordered: { + // Build void __kmpc_end_ordered(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_ordered"); + break; + } + case OMPRTL__kmpc_omp_taskwait: { + // Build kmp_int32 __kmpc_omp_taskwait(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_omp_taskwait"); + break; + } + case OMPRTL__kmpc_taskgroup: { + // Build void __kmpc_taskgroup(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_taskgroup"); + break; + } + case OMPRTL__kmpc_end_taskgroup: { + // Build void __kmpc_end_taskgroup(ident_t *loc, kmp_int32 global_tid); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_taskgroup"); + break; + } + case OMPRTL__kmpc_push_proc_bind: { + // Build void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 global_tid, + // int proc_bind) + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_push_proc_bind"); + break; + } + case OMPRTL__kmpc_omp_task_with_deps: { + // Build kmp_int32 __kmpc_omp_task_with_deps(ident_t *, kmp_int32 gtid, + // kmp_task_t *new_task, kmp_int32 ndeps, kmp_depend_info_t *dep_list, + // kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), CGM.Int32Ty, CGM.VoidPtrTy, CGM.Int32Ty, + CGM.VoidPtrTy, CGM.Int32Ty, CGM.VoidPtrTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); + RTLFn = + CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task_with_deps"); + break; + } + case OMPRTL__kmpc_omp_wait_deps: { + // Build void __kmpc_omp_wait_deps(ident_t *, kmp_int32 gtid, + // kmp_int32 ndeps, kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias, + // kmp_depend_info_t *noalias_dep_list); + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, + CGM.Int32Ty, CGM.VoidPtrTy, + CGM.Int32Ty, CGM.VoidPtrTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_wait_deps"); + break; + } + case OMPRTL__kmpc_cancellationpoint: { + // Build kmp_int32 __kmpc_cancellationpoint(ident_t *loc, kmp_int32 + // global_tid, kmp_int32 cncl_kind) + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_cancellationpoint"); + break; + } + case OMPRTL__kmpc_cancel: { + // Build kmp_int32 __kmpc_cancel(ident_t *loc, kmp_int32 global_tid, + // kmp_int32 cncl_kind) + llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_cancel"); + break; + } + case OMPRTL__tgt_target: { + // Build int32_t __tgt_target(int32_t device_id, void *host_ptr, int32_t + // arg_num, void** args_base, void **args, size_t *arg_sizes, int32_t + // *arg_types); + llvm::Type *TypeParams[] = {CGM.Int32Ty, + CGM.VoidPtrTy, + CGM.Int32Ty, + CGM.VoidPtrPtrTy, + CGM.VoidPtrPtrTy, + CGM.SizeTy->getPointerTo(), + CGM.Int32Ty->getPointerTo()}; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); + RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target"); + break; + } + } + return RTLFn; +} + +static llvm::Value *getTypeSize(CodeGenFunction &CGF, QualType Ty) { + auto &C = CGF.getContext(); + llvm::Value *Size = nullptr; + auto SizeInChars = C.getTypeSizeInChars(Ty); + if (SizeInChars.isZero()) { + // getTypeSizeInChars() returns 0 for a VLA. + while (auto *VAT = C.getAsVariableArrayType(Ty)) { + llvm::Value *ArraySize; + std::tie(ArraySize, Ty) = CGF.getVLASize(VAT); + Size = Size ? CGF.Builder.CreateNUWMul(Size, ArraySize) : ArraySize; + } + SizeInChars = C.getTypeSizeInChars(Ty); + assert(!SizeInChars.isZero()); + Size = CGF.Builder.CreateNUWMul( + Size, llvm::ConstantInt::get(CGF.SizeTy, SizeInChars.getQuantity())); + } else + Size = llvm::ConstantInt::get(CGF.SizeTy, SizeInChars.getQuantity()); + return Size; +} + +llvm::Constant *CGOpenMPRuntime::createForStaticInitFunction(unsigned IVSize, + bool IVSigned) { + assert((IVSize == 32 || IVSize == 64) && + "IV size is not compatible with the omp runtime"); + auto Name = IVSize == 32 ? (IVSigned ? "__kmpc_for_static_init_4" + : "__kmpc_for_static_init_4u") + : (IVSigned ? "__kmpc_for_static_init_8" + : "__kmpc_for_static_init_8u"); + auto ITy = IVSize == 32 ? CGM.Int32Ty : CGM.Int64Ty; + auto PtrTy = llvm::PointerType::getUnqual(ITy); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), // loc + CGM.Int32Ty, // tid + CGM.Int32Ty, // schedtype + llvm::PointerType::getUnqual(CGM.Int32Ty), // p_lastiter + PtrTy, // p_lower + PtrTy, // p_upper + PtrTy, // p_stride + ITy, // incr + ITy // chunk + }; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + return CGM.CreateRuntimeFunction(FnTy, Name); +} + +llvm::Constant *CGOpenMPRuntime::createDispatchInitFunction(unsigned IVSize, + bool IVSigned) { + assert((IVSize == 32 || IVSize == 64) && + "IV size is not compatible with the omp runtime"); + auto Name = + IVSize == 32 + ? (IVSigned ? "__kmpc_dispatch_init_4" : "__kmpc_dispatch_init_4u") + : (IVSigned ? "__kmpc_dispatch_init_8" : "__kmpc_dispatch_init_8u"); + auto ITy = IVSize == 32 ? CGM.Int32Ty : CGM.Int64Ty; + llvm::Type *TypeParams[] = { getIdentTyPointerTy(), // loc + CGM.Int32Ty, // tid + CGM.Int32Ty, // schedtype + ITy, // lower + ITy, // upper + ITy, // stride + ITy // chunk + }; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); + return CGM.CreateRuntimeFunction(FnTy, Name); +} + +llvm::Constant *CGOpenMPRuntime::createDispatchFiniFunction(unsigned IVSize, + bool IVSigned) { + assert((IVSize == 32 || IVSize == 64) && + "IV size is not compatible with the omp runtime"); + auto Name = + IVSize == 32 + ? (IVSigned ? "__kmpc_dispatch_fini_4" : "__kmpc_dispatch_fini_4u") + : (IVSigned ? "__kmpc_dispatch_fini_8" : "__kmpc_dispatch_fini_8u"); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), // loc + CGM.Int32Ty, // tid + }; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); + return CGM.CreateRuntimeFunction(FnTy, Name); +} + +llvm::Constant *CGOpenMPRuntime::createDispatchNextFunction(unsigned IVSize, + bool IVSigned) { + assert((IVSize == 32 || IVSize == 64) && + "IV size is not compatible with the omp runtime"); + auto Name = + IVSize == 32 + ? (IVSigned ? "__kmpc_dispatch_next_4" : "__kmpc_dispatch_next_4u") + : (IVSigned ? "__kmpc_dispatch_next_8" : "__kmpc_dispatch_next_8u"); + auto ITy = IVSize == 32 ? CGM.Int32Ty : CGM.Int64Ty; + auto PtrTy = llvm::PointerType::getUnqual(ITy); + llvm::Type *TypeParams[] = { + getIdentTyPointerTy(), // loc + CGM.Int32Ty, // tid + llvm::PointerType::getUnqual(CGM.Int32Ty), // p_lastiter + PtrTy, // p_lower + PtrTy, // p_upper + PtrTy // p_stride + }; + llvm::FunctionType *FnTy = + llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); + return CGM.CreateRuntimeFunction(FnTy, Name); +} + +llvm::Constant * +CGOpenMPRuntime::getOrCreateThreadPrivateCache(const VarDecl *VD) { + assert(!CGM.getLangOpts().OpenMPUseTLS || + !CGM.getContext().getTargetInfo().isTLSSupported()); + // Lookup the entry, lazily creating it if necessary. + return getOrCreateInternalVariable(CGM.Int8PtrPtrTy, + Twine(CGM.getMangledName(VD)) + ".cache."); +} + +Address CGOpenMPRuntime::getAddrOfThreadPrivate(CodeGenFunction &CGF, + const VarDecl *VD, + Address VDAddr, + SourceLocation Loc) { + if (CGM.getLangOpts().OpenMPUseTLS && + CGM.getContext().getTargetInfo().isTLSSupported()) + return VDAddr; + + auto VarTy = VDAddr.getElementType(); + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), + CGF.Builder.CreatePointerCast(VDAddr.getPointer(), + CGM.Int8PtrTy), + CGM.getSize(CGM.GetTargetTypeStoreSize(VarTy)), + getOrCreateThreadPrivateCache(VD)}; + return Address(CGF.EmitRuntimeCall( + createRuntimeFunction(OMPRTL__kmpc_threadprivate_cached), Args), + VDAddr.getAlignment()); +} + +void CGOpenMPRuntime::emitThreadPrivateVarInit( + CodeGenFunction &CGF, Address VDAddr, llvm::Value *Ctor, + llvm::Value *CopyCtor, llvm::Value *Dtor, SourceLocation Loc) { + // Call kmp_int32 __kmpc_global_thread_num(&loc) to init OpenMP runtime + // library. + auto OMPLoc = emitUpdateLocation(CGF, Loc); + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_global_thread_num), + OMPLoc); + // Call __kmpc_threadprivate_register(&loc, &var, ctor, cctor/*NULL*/, dtor) + // to register constructor/destructor for variable. + llvm::Value *Args[] = {OMPLoc, + CGF.Builder.CreatePointerCast(VDAddr.getPointer(), + CGM.VoidPtrTy), + Ctor, CopyCtor, Dtor}; + CGF.EmitRuntimeCall( + createRuntimeFunction(OMPRTL__kmpc_threadprivate_register), Args); +} + +llvm::Function *CGOpenMPRuntime::emitThreadPrivateVarDefinition( + const VarDecl *VD, Address VDAddr, SourceLocation Loc, + bool PerformInit, CodeGenFunction *CGF) { + if (CGM.getLangOpts().OpenMPUseTLS && + CGM.getContext().getTargetInfo().isTLSSupported()) + return nullptr; + + VD = VD->getDefinition(CGM.getContext()); + if (VD && ThreadPrivateWithDefinition.count(VD) == 0) { + ThreadPrivateWithDefinition.insert(VD); + QualType ASTTy = VD->getType(); + + llvm::Value *Ctor = nullptr, *CopyCtor = nullptr, *Dtor = nullptr; + auto Init = VD->getAnyInitializer(); + if (CGM.getLangOpts().CPlusPlus && PerformInit) { + // Generate function that re-emits the declaration's initializer into the + // threadprivate copy of the variable VD + CodeGenFunction CtorCGF(CGM); + FunctionArgList Args; + ImplicitParamDecl Dst(CGM.getContext(), /*DC=*/nullptr, SourceLocation(), + /*Id=*/nullptr, CGM.getContext().VoidPtrTy); + Args.push_back(&Dst); + + auto &FI = CGM.getTypes().arrangeFreeFunctionDeclaration( + CGM.getContext().VoidPtrTy, Args, FunctionType::ExtInfo(), + /*isVariadic=*/false); + auto FTy = CGM.getTypes().GetFunctionType(FI); + auto Fn = CGM.CreateGlobalInitOrDestructFunction( + FTy, ".__kmpc_global_ctor_.", FI, Loc); + CtorCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidPtrTy, Fn, FI, + Args, SourceLocation()); + auto ArgVal = CtorCGF.EmitLoadOfScalar( + CtorCGF.GetAddrOfLocalVar(&Dst), /*Volatile=*/false, + CGM.getContext().VoidPtrTy, Dst.getLocation()); + Address Arg = Address(ArgVal, VDAddr.getAlignment()); + Arg = CtorCGF.Builder.CreateElementBitCast(Arg, + CtorCGF.ConvertTypeForMem(ASTTy)); + CtorCGF.EmitAnyExprToMem(Init, Arg, Init->getType().getQualifiers(), + /*IsInitializer=*/true); + ArgVal = CtorCGF.EmitLoadOfScalar( + CtorCGF.GetAddrOfLocalVar(&Dst), /*Volatile=*/false, + CGM.getContext().VoidPtrTy, Dst.getLocation()); + CtorCGF.Builder.CreateStore(ArgVal, CtorCGF.ReturnValue); + CtorCGF.FinishFunction(); + Ctor = Fn; + } + if (VD->getType().isDestructedType() != QualType::DK_none) { + // Generate function that emits destructor call for the threadprivate copy + // of the variable VD + CodeGenFunction DtorCGF(CGM); + FunctionArgList Args; + ImplicitParamDecl Dst(CGM.getContext(), /*DC=*/nullptr, SourceLocation(), + /*Id=*/nullptr, CGM.getContext().VoidPtrTy); + Args.push_back(&Dst); + + auto &FI = CGM.getTypes().arrangeFreeFunctionDeclaration( + CGM.getContext().VoidTy, Args, FunctionType::ExtInfo(), + /*isVariadic=*/false); + auto FTy = CGM.getTypes().GetFunctionType(FI); + auto Fn = CGM.CreateGlobalInitOrDestructFunction( + FTy, ".__kmpc_global_dtor_.", FI, Loc); + DtorCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidTy, Fn, FI, Args, + SourceLocation()); + auto ArgVal = DtorCGF.EmitLoadOfScalar( + DtorCGF.GetAddrOfLocalVar(&Dst), + /*Volatile=*/false, CGM.getContext().VoidPtrTy, Dst.getLocation()); + DtorCGF.emitDestroy(Address(ArgVal, VDAddr.getAlignment()), ASTTy, + DtorCGF.getDestroyer(ASTTy.isDestructedType()), + DtorCGF.needsEHCleanup(ASTTy.isDestructedType())); + DtorCGF.FinishFunction(); + Dtor = Fn; + } + // Do not emit init function if it is not required. + if (!Ctor && !Dtor) + return nullptr; + + llvm::Type *CopyCtorTyArgs[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; + auto CopyCtorTy = + llvm::FunctionType::get(CGM.VoidPtrTy, CopyCtorTyArgs, + /*isVarArg=*/false)->getPointerTo(); + // Copying constructor for the threadprivate variable. + // Must be NULL - reserved by runtime, but currently it requires that this + // parameter is always NULL. Otherwise it fires assertion. + CopyCtor = llvm::Constant::getNullValue(CopyCtorTy); + if (Ctor == nullptr) { + auto CtorTy = llvm::FunctionType::get(CGM.VoidPtrTy, CGM.VoidPtrTy, + /*isVarArg=*/false)->getPointerTo(); + Ctor = llvm::Constant::getNullValue(CtorTy); + } + if (Dtor == nullptr) { + auto DtorTy = llvm::FunctionType::get(CGM.VoidTy, CGM.VoidPtrTy, + /*isVarArg=*/false)->getPointerTo(); + Dtor = llvm::Constant::getNullValue(DtorTy); + } + if (!CGF) { + auto InitFunctionTy = + llvm::FunctionType::get(CGM.VoidTy, /*isVarArg*/ false); + auto InitFunction = CGM.CreateGlobalInitOrDestructFunction( + InitFunctionTy, ".__omp_threadprivate_init_.", + CGM.getTypes().arrangeNullaryFunction()); + CodeGenFunction InitCGF(CGM); + FunctionArgList ArgList; + InitCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidTy, InitFunction, + CGM.getTypes().arrangeNullaryFunction(), ArgList, + Loc); + emitThreadPrivateVarInit(InitCGF, VDAddr, Ctor, CopyCtor, Dtor, Loc); + InitCGF.FinishFunction(); + return InitFunction; + } + emitThreadPrivateVarInit(*CGF, VDAddr, Ctor, CopyCtor, Dtor, Loc); + } + return nullptr; +} + +/// \brief Emits code for OpenMP 'if' clause using specified \a CodeGen +/// function. Here is the logic: +/// if (Cond) { +/// ThenGen(); +/// } else { +/// ElseGen(); +/// } +static void emitOMPIfClause(CodeGenFunction &CGF, const Expr *Cond, + const RegionCodeGenTy &ThenGen, + const RegionCodeGenTy &ElseGen) { + CodeGenFunction::LexicalScope ConditionScope(CGF, Cond->getSourceRange()); + + // If the condition constant folds and can be elided, try to avoid emitting + // the condition and the dead arm of the if/else. + bool CondConstant; + if (CGF.ConstantFoldsToSimpleInteger(Cond, CondConstant)) { + CodeGenFunction::RunCleanupsScope Scope(CGF); + if (CondConstant) { + ThenGen(CGF); + } else { + ElseGen(CGF); + } + return; + } + + // Otherwise, the condition did not fold, or we couldn't elide it. Just + // emit the conditional branch. + auto ThenBlock = CGF.createBasicBlock("omp_if.then"); + auto ElseBlock = CGF.createBasicBlock("omp_if.else"); + auto ContBlock = CGF.createBasicBlock("omp_if.end"); + CGF.EmitBranchOnBoolExpr(Cond, ThenBlock, ElseBlock, /*TrueCount=*/0); + + // Emit the 'then' code. + CGF.EmitBlock(ThenBlock); + { + CodeGenFunction::RunCleanupsScope ThenScope(CGF); + ThenGen(CGF); + } + CGF.EmitBranch(ContBlock); + // Emit the 'else' code if present. + { + // There is no need to emit line number for unconditional branch. + auto NL = ApplyDebugLocation::CreateEmpty(CGF); + CGF.EmitBlock(ElseBlock); + } + { + CodeGenFunction::RunCleanupsScope ThenScope(CGF); + ElseGen(CGF); + } + { + // There is no need to emit line number for unconditional branch. + auto NL = ApplyDebugLocation::CreateEmpty(CGF); + CGF.EmitBranch(ContBlock); + } + // Emit the continuation block for code after the if. + CGF.EmitBlock(ContBlock, /*IsFinished=*/true); +} + +void CGOpenMPRuntime::emitParallelCall(CodeGenFunction &CGF, SourceLocation Loc, + llvm::Value *OutlinedFn, + ArrayRef<llvm::Value *> CapturedVars, + const Expr *IfCond) { + if (!CGF.HaveInsertPoint()) + return; + auto *RTLoc = emitUpdateLocation(CGF, Loc); + auto &&ThenGen = [this, OutlinedFn, CapturedVars, + RTLoc](CodeGenFunction &CGF) { + // Build call __kmpc_fork_call(loc, n, microtask, var1, .., varn); + llvm::Value *Args[] = { + RTLoc, + CGF.Builder.getInt32(CapturedVars.size()), // Number of captured vars + CGF.Builder.CreateBitCast(OutlinedFn, getKmpc_MicroPointerTy())}; + llvm::SmallVector<llvm::Value *, 16> RealArgs; + RealArgs.append(std::begin(Args), std::end(Args)); + RealArgs.append(CapturedVars.begin(), CapturedVars.end()); + + auto RTLFn = createRuntimeFunction(OMPRTL__kmpc_fork_call); + CGF.EmitRuntimeCall(RTLFn, RealArgs); + }; + auto &&ElseGen = [this, OutlinedFn, CapturedVars, RTLoc, + Loc](CodeGenFunction &CGF) { + auto ThreadID = getThreadID(CGF, Loc); + // Build calls: + // __kmpc_serialized_parallel(&Loc, GTid); + llvm::Value *Args[] = {RTLoc, ThreadID}; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_serialized_parallel), + Args); + + // OutlinedFn(>id, &zero, CapturedStruct); + auto ThreadIDAddr = emitThreadIDAddress(CGF, Loc); + Address ZeroAddr = + CGF.CreateTempAlloca(CGF.Int32Ty, CharUnits::fromQuantity(4), + /*Name*/ ".zero.addr"); + CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0)); + llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs; + OutlinedFnArgs.push_back(ThreadIDAddr.getPointer()); + OutlinedFnArgs.push_back(ZeroAddr.getPointer()); + OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end()); + CGF.EmitCallOrInvoke(OutlinedFn, OutlinedFnArgs); + + // __kmpc_end_serialized_parallel(&Loc, GTid); + llvm::Value *EndArgs[] = {emitUpdateLocation(CGF, Loc), ThreadID}; + CGF.EmitRuntimeCall( + createRuntimeFunction(OMPRTL__kmpc_end_serialized_parallel), EndArgs); + }; + if (IfCond) { + emitOMPIfClause(CGF, IfCond, ThenGen, ElseGen); + } else { + CodeGenFunction::RunCleanupsScope Scope(CGF); + ThenGen(CGF); + } +} + +// If we're inside an (outlined) parallel region, use the region info's +// thread-ID variable (it is passed in a first argument of the outlined function +// as "kmp_int32 *gtid"). Otherwise, if we're not inside parallel region, but in +// regular serial code region, get thread ID by calling kmp_int32 +// kmpc_global_thread_num(ident_t *loc), stash this thread ID in a temporary and +// return the address of that temp. +Address CGOpenMPRuntime::emitThreadIDAddress(CodeGenFunction &CGF, + SourceLocation Loc) { + if (auto OMPRegionInfo = + dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) + if (OMPRegionInfo->getThreadIDVariable()) + return OMPRegionInfo->getThreadIDVariableLValue(CGF).getAddress(); + + auto ThreadID = getThreadID(CGF, Loc); + auto Int32Ty = + CGF.getContext().getIntTypeForBitwidth(/*DestWidth*/ 32, /*Signed*/ true); + auto ThreadIDTemp = CGF.CreateMemTemp(Int32Ty, /*Name*/ ".threadid_temp."); + CGF.EmitStoreOfScalar(ThreadID, + CGF.MakeAddrLValue(ThreadIDTemp, Int32Ty)); + + return ThreadIDTemp; +} + +llvm::Constant * +CGOpenMPRuntime::getOrCreateInternalVariable(llvm::Type *Ty, + const llvm::Twine &Name) { + SmallString<256> Buffer; + llvm::raw_svector_ostream Out(Buffer); + Out << Name; + auto RuntimeName = Out.str(); + auto &Elem = *InternalVars.insert(std::make_pair(RuntimeName, nullptr)).first; + if (Elem.second) { + assert(Elem.second->getType()->getPointerElementType() == Ty && + "OMP internal variable has different type than requested"); + return &*Elem.second; + } + + return Elem.second = new llvm::GlobalVariable( + CGM.getModule(), Ty, /*IsConstant*/ false, + llvm::GlobalValue::CommonLinkage, llvm::Constant::getNullValue(Ty), + Elem.first()); +} + +llvm::Value *CGOpenMPRuntime::getCriticalRegionLock(StringRef CriticalName) { + llvm::Twine Name(".gomp_critical_user_", CriticalName); + return getOrCreateInternalVariable(KmpCriticalNameTy, Name.concat(".var")); +} + +namespace { +template <size_t N> class CallEndCleanup final : public EHScopeStack::Cleanup { + llvm::Value *Callee; + llvm::Value *Args[N]; + +public: + CallEndCleanup(llvm::Value *Callee, ArrayRef<llvm::Value *> CleanupArgs) + : Callee(Callee) { + assert(CleanupArgs.size() == N); + std::copy(CleanupArgs.begin(), CleanupArgs.end(), std::begin(Args)); + } + void Emit(CodeGenFunction &CGF, Flags /*flags*/) override { + if (!CGF.HaveInsertPoint()) + return; + CGF.EmitRuntimeCall(Callee, Args); + } +}; +} // anonymous namespace + +void CGOpenMPRuntime::emitCriticalRegion(CodeGenFunction &CGF, + StringRef CriticalName, + const RegionCodeGenTy &CriticalOpGen, + SourceLocation Loc, const Expr *Hint) { + // __kmpc_critical[_with_hint](ident_t *, gtid, Lock[, hint]); + // CriticalOpGen(); + // __kmpc_end_critical(ident_t *, gtid, Lock); + // Prepare arguments and build a call to __kmpc_critical + if (!CGF.HaveInsertPoint()) + return; + CodeGenFunction::RunCleanupsScope Scope(CGF); + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), + getCriticalRegionLock(CriticalName)}; + if (Hint) { + llvm::SmallVector<llvm::Value *, 8> ArgsWithHint(std::begin(Args), + std::end(Args)); + auto *HintVal = CGF.EmitScalarExpr(Hint); + ArgsWithHint.push_back( + CGF.Builder.CreateIntCast(HintVal, CGM.IntPtrTy, /*isSigned=*/false)); + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_critical_with_hint), + ArgsWithHint); + } else + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_critical), Args); + // Build a call to __kmpc_end_critical + CGF.EHStack.pushCleanup<CallEndCleanup<std::extent<decltype(Args)>::value>>( + NormalAndEHCleanup, createRuntimeFunction(OMPRTL__kmpc_end_critical), + llvm::makeArrayRef(Args)); + emitInlinedDirective(CGF, OMPD_critical, CriticalOpGen); +} + +static void emitIfStmt(CodeGenFunction &CGF, llvm::Value *IfCond, + OpenMPDirectiveKind Kind, SourceLocation Loc, + const RegionCodeGenTy &BodyOpGen) { + llvm::Value *CallBool = CGF.EmitScalarConversion( + IfCond, + CGF.getContext().getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/true), + CGF.getContext().BoolTy, Loc); + + auto *ThenBlock = CGF.createBasicBlock("omp_if.then"); + auto *ContBlock = CGF.createBasicBlock("omp_if.end"); + // Generate the branch (If-stmt) + CGF.Builder.CreateCondBr(CallBool, ThenBlock, ContBlock); + CGF.EmitBlock(ThenBlock); + CGF.CGM.getOpenMPRuntime().emitInlinedDirective(CGF, Kind, BodyOpGen); + // Emit the rest of bblocks/branches + CGF.EmitBranch(ContBlock); + CGF.EmitBlock(ContBlock, true); +} + +void CGOpenMPRuntime::emitMasterRegion(CodeGenFunction &CGF, + const RegionCodeGenTy &MasterOpGen, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // if(__kmpc_master(ident_t *, gtid)) { + // MasterOpGen(); + // __kmpc_end_master(ident_t *, gtid); + // } + // Prepare arguments and build a call to __kmpc_master + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; + auto *IsMaster = + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_master), Args); + typedef CallEndCleanup<std::extent<decltype(Args)>::value> + MasterCallEndCleanup; + emitIfStmt( + CGF, IsMaster, OMPD_master, Loc, [&](CodeGenFunction &CGF) -> void { + CodeGenFunction::RunCleanupsScope Scope(CGF); + CGF.EHStack.pushCleanup<MasterCallEndCleanup>( + NormalAndEHCleanup, createRuntimeFunction(OMPRTL__kmpc_end_master), + llvm::makeArrayRef(Args)); + MasterOpGen(CGF); + }); +} + +void CGOpenMPRuntime::emitTaskyieldCall(CodeGenFunction &CGF, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // Build call __kmpc_omp_taskyield(loc, thread_id, 0); + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), + llvm::ConstantInt::get(CGM.IntTy, /*V=*/0, /*isSigned=*/true)}; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_taskyield), Args); +} + +void CGOpenMPRuntime::emitTaskgroupRegion(CodeGenFunction &CGF, + const RegionCodeGenTy &TaskgroupOpGen, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // __kmpc_taskgroup(ident_t *, gtid); + // TaskgroupOpGen(); + // __kmpc_end_taskgroup(ident_t *, gtid); + // Prepare arguments and build a call to __kmpc_taskgroup + { + CodeGenFunction::RunCleanupsScope Scope(CGF); + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_taskgroup), Args); + // Build a call to __kmpc_end_taskgroup + CGF.EHStack.pushCleanup<CallEndCleanup<std::extent<decltype(Args)>::value>>( + NormalAndEHCleanup, createRuntimeFunction(OMPRTL__kmpc_end_taskgroup), + llvm::makeArrayRef(Args)); + emitInlinedDirective(CGF, OMPD_taskgroup, TaskgroupOpGen); + } +} + +/// Given an array of pointers to variables, project the address of a +/// given variable. +static Address emitAddrOfVarFromArray(CodeGenFunction &CGF, Address Array, + unsigned Index, const VarDecl *Var) { + // Pull out the pointer to the variable. + Address PtrAddr = + CGF.Builder.CreateConstArrayGEP(Array, Index, CGF.getPointerSize()); + llvm::Value *Ptr = CGF.Builder.CreateLoad(PtrAddr); + + Address Addr = Address(Ptr, CGF.getContext().getDeclAlign(Var)); + Addr = CGF.Builder.CreateElementBitCast( + Addr, CGF.ConvertTypeForMem(Var->getType())); + return Addr; +} + +static llvm::Value *emitCopyprivateCopyFunction( + CodeGenModule &CGM, llvm::Type *ArgsType, + ArrayRef<const Expr *> CopyprivateVars, ArrayRef<const Expr *> DestExprs, + ArrayRef<const Expr *> SrcExprs, ArrayRef<const Expr *> AssignmentOps) { + auto &C = CGM.getContext(); + // void copy_func(void *LHSArg, void *RHSArg); + FunctionArgList Args; + ImplicitParamDecl LHSArg(C, /*DC=*/nullptr, SourceLocation(), /*Id=*/nullptr, + C.VoidPtrTy); + ImplicitParamDecl RHSArg(C, /*DC=*/nullptr, SourceLocation(), /*Id=*/nullptr, + C.VoidPtrTy); + Args.push_back(&LHSArg); + Args.push_back(&RHSArg); + FunctionType::ExtInfo EI; + auto &CGFI = CGM.getTypes().arrangeFreeFunctionDeclaration( + C.VoidTy, Args, EI, /*isVariadic=*/false); + auto *Fn = llvm::Function::Create( + CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage, + ".omp.copyprivate.copy_func", &CGM.getModule()); + CGM.SetInternalFunctionAttributes(/*D=*/nullptr, Fn, CGFI); + CodeGenFunction CGF(CGM); + CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args); + // Dest = (void*[n])(LHSArg); + // Src = (void*[n])(RHSArg); + Address LHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&LHSArg)), + ArgsType), CGF.getPointerAlign()); + Address RHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&RHSArg)), + ArgsType), CGF.getPointerAlign()); + // *(Type0*)Dst[0] = *(Type0*)Src[0]; + // *(Type1*)Dst[1] = *(Type1*)Src[1]; + // ... + // *(Typen*)Dst[n] = *(Typen*)Src[n]; + for (unsigned I = 0, E = AssignmentOps.size(); I < E; ++I) { + auto DestVar = cast<VarDecl>(cast<DeclRefExpr>(DestExprs[I])->getDecl()); + Address DestAddr = emitAddrOfVarFromArray(CGF, LHS, I, DestVar); + + auto SrcVar = cast<VarDecl>(cast<DeclRefExpr>(SrcExprs[I])->getDecl()); + Address SrcAddr = emitAddrOfVarFromArray(CGF, RHS, I, SrcVar); + + auto *VD = cast<DeclRefExpr>(CopyprivateVars[I])->getDecl(); + QualType Type = VD->getType(); + CGF.EmitOMPCopy(Type, DestAddr, SrcAddr, DestVar, SrcVar, AssignmentOps[I]); + } + CGF.FinishFunction(); + return Fn; +} + +void CGOpenMPRuntime::emitSingleRegion(CodeGenFunction &CGF, + const RegionCodeGenTy &SingleOpGen, + SourceLocation Loc, + ArrayRef<const Expr *> CopyprivateVars, + ArrayRef<const Expr *> SrcExprs, + ArrayRef<const Expr *> DstExprs, + ArrayRef<const Expr *> AssignmentOps) { + if (!CGF.HaveInsertPoint()) + return; + assert(CopyprivateVars.size() == SrcExprs.size() && + CopyprivateVars.size() == DstExprs.size() && + CopyprivateVars.size() == AssignmentOps.size()); + auto &C = CGM.getContext(); + // int32 did_it = 0; + // if(__kmpc_single(ident_t *, gtid)) { + // SingleOpGen(); + // __kmpc_end_single(ident_t *, gtid); + // did_it = 1; + // } + // call __kmpc_copyprivate(ident_t *, gtid, <buf_size>, <copyprivate list>, + // <copy_func>, did_it); + + Address DidIt = Address::invalid(); + if (!CopyprivateVars.empty()) { + // int32 did_it = 0; + auto KmpInt32Ty = C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1); + DidIt = CGF.CreateMemTemp(KmpInt32Ty, ".omp.copyprivate.did_it"); + CGF.Builder.CreateStore(CGF.Builder.getInt32(0), DidIt); + } + // Prepare arguments and build a call to __kmpc_single + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; + auto *IsSingle = + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_single), Args); + typedef CallEndCleanup<std::extent<decltype(Args)>::value> + SingleCallEndCleanup; + emitIfStmt( + CGF, IsSingle, OMPD_single, Loc, [&](CodeGenFunction &CGF) -> void { + CodeGenFunction::RunCleanupsScope Scope(CGF); + CGF.EHStack.pushCleanup<SingleCallEndCleanup>( + NormalAndEHCleanup, createRuntimeFunction(OMPRTL__kmpc_end_single), + llvm::makeArrayRef(Args)); + SingleOpGen(CGF); + if (DidIt.isValid()) { + // did_it = 1; + CGF.Builder.CreateStore(CGF.Builder.getInt32(1), DidIt); + } + }); + // call __kmpc_copyprivate(ident_t *, gtid, <buf_size>, <copyprivate list>, + // <copy_func>, did_it); + if (DidIt.isValid()) { + llvm::APInt ArraySize(/*unsigned int numBits=*/32, CopyprivateVars.size()); + auto CopyprivateArrayTy = + C.getConstantArrayType(C.VoidPtrTy, ArraySize, ArrayType::Normal, + /*IndexTypeQuals=*/0); + // Create a list of all private variables for copyprivate. + Address CopyprivateList = + CGF.CreateMemTemp(CopyprivateArrayTy, ".omp.copyprivate.cpr_list"); + for (unsigned I = 0, E = CopyprivateVars.size(); I < E; ++I) { + Address Elem = CGF.Builder.CreateConstArrayGEP( + CopyprivateList, I, CGF.getPointerSize()); + CGF.Builder.CreateStore( + CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.EmitLValue(CopyprivateVars[I]).getPointer(), CGF.VoidPtrTy), + Elem); + } + // Build function that copies private values from single region to all other + // threads in the corresponding parallel region. + auto *CpyFn = emitCopyprivateCopyFunction( + CGM, CGF.ConvertTypeForMem(CopyprivateArrayTy)->getPointerTo(), + CopyprivateVars, SrcExprs, DstExprs, AssignmentOps); + auto *BufSize = getTypeSize(CGF, CopyprivateArrayTy); + Address CL = + CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(CopyprivateList, + CGF.VoidPtrTy); + auto *DidItVal = CGF.Builder.CreateLoad(DidIt); + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc), // ident_t *<loc> + getThreadID(CGF, Loc), // i32 <gtid> + BufSize, // size_t <buf_size> + CL.getPointer(), // void *<copyprivate list> + CpyFn, // void (*) (void *, void *) <copy_func> + DidItVal // i32 did_it + }; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_copyprivate), Args); + } +} + +void CGOpenMPRuntime::emitOrderedRegion(CodeGenFunction &CGF, + const RegionCodeGenTy &OrderedOpGen, + SourceLocation Loc, bool IsThreads) { + if (!CGF.HaveInsertPoint()) + return; + // __kmpc_ordered(ident_t *, gtid); + // OrderedOpGen(); + // __kmpc_end_ordered(ident_t *, gtid); + // Prepare arguments and build a call to __kmpc_ordered + CodeGenFunction::RunCleanupsScope Scope(CGF); + if (IsThreads) { + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_ordered), Args); + // Build a call to __kmpc_end_ordered + CGF.EHStack.pushCleanup<CallEndCleanup<std::extent<decltype(Args)>::value>>( + NormalAndEHCleanup, createRuntimeFunction(OMPRTL__kmpc_end_ordered), + llvm::makeArrayRef(Args)); + } + emitInlinedDirective(CGF, OMPD_ordered, OrderedOpGen); +} + +void CGOpenMPRuntime::emitBarrierCall(CodeGenFunction &CGF, SourceLocation Loc, + OpenMPDirectiveKind Kind, bool EmitChecks, + bool ForceSimpleCall) { + if (!CGF.HaveInsertPoint()) + return; + // Build call __kmpc_cancel_barrier(loc, thread_id); + // Build call __kmpc_barrier(loc, thread_id); + OpenMPLocationFlags Flags = OMP_IDENT_KMPC; + if (Kind == OMPD_for) { + Flags = + static_cast<OpenMPLocationFlags>(Flags | OMP_IDENT_BARRIER_IMPL_FOR); + } else if (Kind == OMPD_sections) { + Flags = static_cast<OpenMPLocationFlags>(Flags | + OMP_IDENT_BARRIER_IMPL_SECTIONS); + } else if (Kind == OMPD_single) { + Flags = + static_cast<OpenMPLocationFlags>(Flags | OMP_IDENT_BARRIER_IMPL_SINGLE); + } else if (Kind == OMPD_barrier) { + Flags = static_cast<OpenMPLocationFlags>(Flags | OMP_IDENT_BARRIER_EXPL); + } else { + Flags = static_cast<OpenMPLocationFlags>(Flags | OMP_IDENT_BARRIER_IMPL); + } + // Build call __kmpc_cancel_barrier(loc, thread_id) or __kmpc_barrier(loc, + // thread_id); + auto *OMPRegionInfo = + dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo); + // Do not emit barrier call in the single directive emitted in some rare cases + // for sections directives. + if (OMPRegionInfo && OMPRegionInfo->getDirectiveKind() == OMPD_single) + return; + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc, Flags), + getThreadID(CGF, Loc)}; + if (OMPRegionInfo) { + if (!ForceSimpleCall && OMPRegionInfo->hasCancel()) { + auto *Result = CGF.EmitRuntimeCall( + createRuntimeFunction(OMPRTL__kmpc_cancel_barrier), Args); + if (EmitChecks) { + // if (__kmpc_cancel_barrier()) { + // exit from construct; + // } + auto *ExitBB = CGF.createBasicBlock(".cancel.exit"); + auto *ContBB = CGF.createBasicBlock(".cancel.continue"); + auto *Cmp = CGF.Builder.CreateIsNotNull(Result); + CGF.Builder.CreateCondBr(Cmp, ExitBB, ContBB); + CGF.EmitBlock(ExitBB); + // exit from construct; + auto CancelDestination = + CGF.getOMPCancelDestination(OMPRegionInfo->getDirectiveKind()); + CGF.EmitBranchThroughCleanup(CancelDestination); + CGF.EmitBlock(ContBB, /*IsFinished=*/true); + } + return; + } + } + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_barrier), Args); +} + +/// \brief Schedule types for 'omp for' loops (these enumerators are taken from +/// the enum sched_type in kmp.h). +enum OpenMPSchedType { + /// \brief Lower bound for default (unordered) versions. + OMP_sch_lower = 32, + OMP_sch_static_chunked = 33, + OMP_sch_static = 34, + OMP_sch_dynamic_chunked = 35, + OMP_sch_guided_chunked = 36, + OMP_sch_runtime = 37, + OMP_sch_auto = 38, + /// \brief Lower bound for 'ordered' versions. + OMP_ord_lower = 64, + OMP_ord_static_chunked = 65, + OMP_ord_static = 66, + OMP_ord_dynamic_chunked = 67, + OMP_ord_guided_chunked = 68, + OMP_ord_runtime = 69, + OMP_ord_auto = 70, + OMP_sch_default = OMP_sch_static, +}; + +/// \brief Map the OpenMP loop schedule to the runtime enumeration. +static OpenMPSchedType getRuntimeSchedule(OpenMPScheduleClauseKind ScheduleKind, + bool Chunked, bool Ordered) { + switch (ScheduleKind) { + case OMPC_SCHEDULE_static: + return Chunked ? (Ordered ? OMP_ord_static_chunked : OMP_sch_static_chunked) + : (Ordered ? OMP_ord_static : OMP_sch_static); + case OMPC_SCHEDULE_dynamic: + return Ordered ? OMP_ord_dynamic_chunked : OMP_sch_dynamic_chunked; + case OMPC_SCHEDULE_guided: + return Ordered ? OMP_ord_guided_chunked : OMP_sch_guided_chunked; + case OMPC_SCHEDULE_runtime: + return Ordered ? OMP_ord_runtime : OMP_sch_runtime; + case OMPC_SCHEDULE_auto: + return Ordered ? OMP_ord_auto : OMP_sch_auto; + case OMPC_SCHEDULE_unknown: + assert(!Chunked && "chunk was specified but schedule kind not known"); + return Ordered ? OMP_ord_static : OMP_sch_static; + } + llvm_unreachable("Unexpected runtime schedule"); +} + +bool CGOpenMPRuntime::isStaticNonchunked(OpenMPScheduleClauseKind ScheduleKind, + bool Chunked) const { + auto Schedule = getRuntimeSchedule(ScheduleKind, Chunked, /*Ordered=*/false); + return Schedule == OMP_sch_static; +} + +bool CGOpenMPRuntime::isDynamic(OpenMPScheduleClauseKind ScheduleKind) const { + auto Schedule = + getRuntimeSchedule(ScheduleKind, /*Chunked=*/false, /*Ordered=*/false); + assert(Schedule != OMP_sch_static_chunked && "cannot be chunked here"); + return Schedule != OMP_sch_static; +} + +void CGOpenMPRuntime::emitForDispatchInit(CodeGenFunction &CGF, + SourceLocation Loc, + OpenMPScheduleClauseKind ScheduleKind, + unsigned IVSize, bool IVSigned, + bool Ordered, llvm::Value *UB, + llvm::Value *Chunk) { + if (!CGF.HaveInsertPoint()) + return; + OpenMPSchedType Schedule = + getRuntimeSchedule(ScheduleKind, Chunk != nullptr, Ordered); + assert(Ordered || + (Schedule != OMP_sch_static && Schedule != OMP_sch_static_chunked && + Schedule != OMP_ord_static && Schedule != OMP_ord_static_chunked)); + // Call __kmpc_dispatch_init( + // ident_t *loc, kmp_int32 tid, kmp_int32 schedule, + // kmp_int[32|64] lower, kmp_int[32|64] upper, + // kmp_int[32|64] stride, kmp_int[32|64] chunk); + + // If the Chunk was not specified in the clause - use default value 1. + if (Chunk == nullptr) + Chunk = CGF.Builder.getIntN(IVSize, 1); + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc, OMP_IDENT_KMPC), + getThreadID(CGF, Loc), + CGF.Builder.getInt32(Schedule), // Schedule type + CGF.Builder.getIntN(IVSize, 0), // Lower + UB, // Upper + CGF.Builder.getIntN(IVSize, 1), // Stride + Chunk // Chunk + }; + CGF.EmitRuntimeCall(createDispatchInitFunction(IVSize, IVSigned), Args); +} + +void CGOpenMPRuntime::emitForStaticInit(CodeGenFunction &CGF, + SourceLocation Loc, + OpenMPScheduleClauseKind ScheduleKind, + unsigned IVSize, bool IVSigned, + bool Ordered, Address IL, Address LB, + Address UB, Address ST, + llvm::Value *Chunk) { + if (!CGF.HaveInsertPoint()) + return; + OpenMPSchedType Schedule = + getRuntimeSchedule(ScheduleKind, Chunk != nullptr, Ordered); + assert(!Ordered); + assert(Schedule == OMP_sch_static || Schedule == OMP_sch_static_chunked || + Schedule == OMP_ord_static || Schedule == OMP_ord_static_chunked); + + // Call __kmpc_for_static_init( + // ident_t *loc, kmp_int32 tid, kmp_int32 schedtype, + // kmp_int32 *p_lastiter, kmp_int[32|64] *p_lower, + // kmp_int[32|64] *p_upper, kmp_int[32|64] *p_stride, + // kmp_int[32|64] incr, kmp_int[32|64] chunk); + if (Chunk == nullptr) { + assert((Schedule == OMP_sch_static || Schedule == OMP_ord_static) && + "expected static non-chunked schedule"); + // If the Chunk was not specified in the clause - use default value 1. + Chunk = CGF.Builder.getIntN(IVSize, 1); + } else { + assert((Schedule == OMP_sch_static_chunked || + Schedule == OMP_ord_static_chunked) && + "expected static chunked schedule"); + } + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc, OMP_IDENT_KMPC), + getThreadID(CGF, Loc), + CGF.Builder.getInt32(Schedule), // Schedule type + IL.getPointer(), // &isLastIter + LB.getPointer(), // &LB + UB.getPointer(), // &UB + ST.getPointer(), // &Stride + CGF.Builder.getIntN(IVSize, 1), // Incr + Chunk // Chunk + }; + CGF.EmitRuntimeCall(createForStaticInitFunction(IVSize, IVSigned), Args); +} + +void CGOpenMPRuntime::emitForStaticFinish(CodeGenFunction &CGF, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // Call __kmpc_for_static_fini(ident_t *loc, kmp_int32 tid); + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc, OMP_IDENT_KMPC), + getThreadID(CGF, Loc)}; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_for_static_fini), + Args); +} + +void CGOpenMPRuntime::emitForOrderedIterationEnd(CodeGenFunction &CGF, + SourceLocation Loc, + unsigned IVSize, + bool IVSigned) { + if (!CGF.HaveInsertPoint()) + return; + // Call __kmpc_for_dynamic_fini_(4|8)[u](ident_t *loc, kmp_int32 tid); + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc, OMP_IDENT_KMPC), + getThreadID(CGF, Loc)}; + CGF.EmitRuntimeCall(createDispatchFiniFunction(IVSize, IVSigned), Args); +} + +llvm::Value *CGOpenMPRuntime::emitForNext(CodeGenFunction &CGF, + SourceLocation Loc, unsigned IVSize, + bool IVSigned, Address IL, + Address LB, Address UB, + Address ST) { + // Call __kmpc_dispatch_next( + // ident_t *loc, kmp_int32 tid, kmp_int32 *p_lastiter, + // kmp_int[32|64] *p_lower, kmp_int[32|64] *p_upper, + // kmp_int[32|64] *p_stride); + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc, OMP_IDENT_KMPC), getThreadID(CGF, Loc), + IL.getPointer(), // &isLastIter + LB.getPointer(), // &Lower + UB.getPointer(), // &Upper + ST.getPointer() // &Stride + }; + llvm::Value *Call = + CGF.EmitRuntimeCall(createDispatchNextFunction(IVSize, IVSigned), Args); + return CGF.EmitScalarConversion( + Call, CGF.getContext().getIntTypeForBitwidth(32, /* Signed */ true), + CGF.getContext().BoolTy, Loc); +} + +void CGOpenMPRuntime::emitNumThreadsClause(CodeGenFunction &CGF, + llvm::Value *NumThreads, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // Build call __kmpc_push_num_threads(&loc, global_tid, num_threads) + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), + CGF.Builder.CreateIntCast(NumThreads, CGF.Int32Ty, /*isSigned*/ true)}; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_push_num_threads), + Args); +} + +void CGOpenMPRuntime::emitProcBindClause(CodeGenFunction &CGF, + OpenMPProcBindClauseKind ProcBind, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // Constants for proc bind value accepted by the runtime. + enum ProcBindTy { + ProcBindFalse = 0, + ProcBindTrue, + ProcBindMaster, + ProcBindClose, + ProcBindSpread, + ProcBindIntel, + ProcBindDefault + } RuntimeProcBind; + switch (ProcBind) { + case OMPC_PROC_BIND_master: + RuntimeProcBind = ProcBindMaster; + break; + case OMPC_PROC_BIND_close: + RuntimeProcBind = ProcBindClose; + break; + case OMPC_PROC_BIND_spread: + RuntimeProcBind = ProcBindSpread; + break; + case OMPC_PROC_BIND_unknown: + llvm_unreachable("Unsupported proc_bind value."); + } + // Build call __kmpc_push_proc_bind(&loc, global_tid, proc_bind) + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), + llvm::ConstantInt::get(CGM.IntTy, RuntimeProcBind, /*isSigned=*/true)}; + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_push_proc_bind), Args); +} + +void CGOpenMPRuntime::emitFlush(CodeGenFunction &CGF, ArrayRef<const Expr *>, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // Build call void __kmpc_flush(ident_t *loc) + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_flush), + emitUpdateLocation(CGF, Loc)); +} + +namespace { +/// \brief Indexes of fields for type kmp_task_t. +enum KmpTaskTFields { + /// \brief List of shared variables. + KmpTaskTShareds, + /// \brief Task routine. + KmpTaskTRoutine, + /// \brief Partition id for the untied tasks. + KmpTaskTPartId, + /// \brief Function with call of destructors for private variables. + KmpTaskTDestructors, +}; +} // anonymous namespace + +void CGOpenMPRuntime::emitKmpRoutineEntryT(QualType KmpInt32Ty) { + if (!KmpRoutineEntryPtrTy) { + // Build typedef kmp_int32 (* kmp_routine_entry_t)(kmp_int32, void *); type. + auto &C = CGM.getContext(); + QualType KmpRoutineEntryTyArgs[] = {KmpInt32Ty, C.VoidPtrTy}; + FunctionProtoType::ExtProtoInfo EPI; + KmpRoutineEntryPtrQTy = C.getPointerType( + C.getFunctionType(KmpInt32Ty, KmpRoutineEntryTyArgs, EPI)); + KmpRoutineEntryPtrTy = CGM.getTypes().ConvertType(KmpRoutineEntryPtrQTy); + } +} + +static FieldDecl *addFieldToRecordDecl(ASTContext &C, DeclContext *DC, + QualType FieldTy) { + auto *Field = FieldDecl::Create( + C, DC, SourceLocation(), SourceLocation(), /*Id=*/nullptr, FieldTy, + C.getTrivialTypeSourceInfo(FieldTy, SourceLocation()), + /*BW=*/nullptr, /*Mutable=*/false, /*InitStyle=*/ICIS_NoInit); + Field->setAccess(AS_public); + DC->addDecl(Field); + return Field; +} + +namespace { +struct PrivateHelpersTy { + PrivateHelpersTy(const VarDecl *Original, const VarDecl *PrivateCopy, + const VarDecl *PrivateElemInit) + : Original(Original), PrivateCopy(PrivateCopy), + PrivateElemInit(PrivateElemInit) {} + const VarDecl *Original; + const VarDecl *PrivateCopy; + const VarDecl *PrivateElemInit; +}; +typedef std::pair<CharUnits /*Align*/, PrivateHelpersTy> PrivateDataTy; +} // anonymous namespace + +static RecordDecl * +createPrivatesRecordDecl(CodeGenModule &CGM, ArrayRef<PrivateDataTy> Privates) { + if (!Privates.empty()) { + auto &C = CGM.getContext(); + // Build struct .kmp_privates_t. { + // /* private vars */ + // }; + auto *RD = C.buildImplicitRecord(".kmp_privates.t"); + RD->startDefinition(); + for (auto &&Pair : Privates) { + auto *VD = Pair.second.Original; + auto Type = VD->getType(); + Type = Type.getNonReferenceType(); + auto *FD = addFieldToRecordDecl(C, RD, Type); + if (VD->hasAttrs()) { + for (specific_attr_iterator<AlignedAttr> I(VD->getAttrs().begin()), + E(VD->getAttrs().end()); + I != E; ++I) + FD->addAttr(*I); + } + } + RD->completeDefinition(); + return RD; + } + return nullptr; +} + +static RecordDecl * +createKmpTaskTRecordDecl(CodeGenModule &CGM, QualType KmpInt32Ty, + QualType KmpRoutineEntryPointerQTy) { + auto &C = CGM.getContext(); + // Build struct kmp_task_t { + // void * shareds; + // kmp_routine_entry_t routine; + // kmp_int32 part_id; + // kmp_routine_entry_t destructors; + // }; + auto *RD = C.buildImplicitRecord("kmp_task_t"); + RD->startDefinition(); + addFieldToRecordDecl(C, RD, C.VoidPtrTy); + addFieldToRecordDecl(C, RD, KmpRoutineEntryPointerQTy); + addFieldToRecordDecl(C, RD, KmpInt32Ty); + addFieldToRecordDecl(C, RD, KmpRoutineEntryPointerQTy); + RD->completeDefinition(); + return RD; +} + +static RecordDecl * +createKmpTaskTWithPrivatesRecordDecl(CodeGenModule &CGM, QualType KmpTaskTQTy, + ArrayRef<PrivateDataTy> Privates) { + auto &C = CGM.getContext(); + // Build struct kmp_task_t_with_privates { + // kmp_task_t task_data; + // .kmp_privates_t. privates; + // }; + auto *RD = C.buildImplicitRecord("kmp_task_t_with_privates"); + RD->startDefinition(); + addFieldToRecordDecl(C, RD, KmpTaskTQTy); + if (auto *PrivateRD = createPrivatesRecordDecl(CGM, Privates)) { + addFieldToRecordDecl(C, RD, C.getRecordType(PrivateRD)); + } + RD->completeDefinition(); + return RD; +} + +/// \brief Emit a proxy function which accepts kmp_task_t as the second +/// argument. +/// \code +/// kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) { +/// TaskFunction(gtid, tt->part_id, &tt->privates, task_privates_map, +/// tt->shareds); +/// return 0; +/// } +/// \endcode +static llvm::Value * +emitProxyTaskFunction(CodeGenModule &CGM, SourceLocation Loc, + QualType KmpInt32Ty, QualType KmpTaskTWithPrivatesPtrQTy, + QualType KmpTaskTWithPrivatesQTy, QualType KmpTaskTQTy, + QualType SharedsPtrTy, llvm::Value *TaskFunction, + llvm::Value *TaskPrivatesMap) { + auto &C = CGM.getContext(); + FunctionArgList Args; + ImplicitParamDecl GtidArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, KmpInt32Ty); + ImplicitParamDecl TaskTypeArg(C, /*DC=*/nullptr, Loc, + /*Id=*/nullptr, + KmpTaskTWithPrivatesPtrQTy.withRestrict()); + Args.push_back(&GtidArg); + Args.push_back(&TaskTypeArg); + FunctionType::ExtInfo Info; + auto &TaskEntryFnInfo = + CGM.getTypes().arrangeFreeFunctionDeclaration(KmpInt32Ty, Args, Info, + /*isVariadic=*/false); + auto *TaskEntryTy = CGM.getTypes().GetFunctionType(TaskEntryFnInfo); + auto *TaskEntry = + llvm::Function::Create(TaskEntryTy, llvm::GlobalValue::InternalLinkage, + ".omp_task_entry.", &CGM.getModule()); + CGM.SetInternalFunctionAttributes(/*D=*/nullptr, TaskEntry, TaskEntryFnInfo); + CodeGenFunction CGF(CGM); + CGF.disableDebugInfo(); + CGF.StartFunction(GlobalDecl(), KmpInt32Ty, TaskEntry, TaskEntryFnInfo, Args); + + // TaskFunction(gtid, tt->task_data.part_id, &tt->privates, task_privates_map, + // tt->task_data.shareds); + auto *GtidParam = CGF.EmitLoadOfScalar( + CGF.GetAddrOfLocalVar(&GtidArg), /*Volatile=*/false, KmpInt32Ty, Loc); + LValue TDBase = emitLoadOfPointerLValue( + CGF, CGF.GetAddrOfLocalVar(&TaskTypeArg), KmpTaskTWithPrivatesPtrQTy); + auto *KmpTaskTWithPrivatesQTyRD = + cast<RecordDecl>(KmpTaskTWithPrivatesQTy->getAsTagDecl()); + LValue Base = + CGF.EmitLValueForField(TDBase, *KmpTaskTWithPrivatesQTyRD->field_begin()); + auto *KmpTaskTQTyRD = cast<RecordDecl>(KmpTaskTQTy->getAsTagDecl()); + auto PartIdFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTPartId); + auto PartIdLVal = CGF.EmitLValueForField(Base, *PartIdFI); + auto *PartidParam = CGF.EmitLoadOfLValue(PartIdLVal, Loc).getScalarVal(); + + auto SharedsFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTShareds); + auto SharedsLVal = CGF.EmitLValueForField(Base, *SharedsFI); + auto *SharedsParam = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.EmitLoadOfLValue(SharedsLVal, Loc).getScalarVal(), + CGF.ConvertTypeForMem(SharedsPtrTy)); + + auto PrivatesFI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin(), 1); + llvm::Value *PrivatesParam; + if (PrivatesFI != KmpTaskTWithPrivatesQTyRD->field_end()) { + auto PrivatesLVal = CGF.EmitLValueForField(TDBase, *PrivatesFI); + PrivatesParam = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + PrivatesLVal.getPointer(), CGF.VoidPtrTy); + } else { + PrivatesParam = llvm::ConstantPointerNull::get(CGF.VoidPtrTy); + } + + llvm::Value *CallArgs[] = {GtidParam, PartidParam, PrivatesParam, + TaskPrivatesMap, SharedsParam}; + CGF.EmitCallOrInvoke(TaskFunction, CallArgs); + CGF.EmitStoreThroughLValue( + RValue::get(CGF.Builder.getInt32(/*C=*/0)), + CGF.MakeAddrLValue(CGF.ReturnValue, KmpInt32Ty)); + CGF.FinishFunction(); + return TaskEntry; +} + +static llvm::Value *emitDestructorsFunction(CodeGenModule &CGM, + SourceLocation Loc, + QualType KmpInt32Ty, + QualType KmpTaskTWithPrivatesPtrQTy, + QualType KmpTaskTWithPrivatesQTy) { + auto &C = CGM.getContext(); + FunctionArgList Args; + ImplicitParamDecl GtidArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, KmpInt32Ty); + ImplicitParamDecl TaskTypeArg(C, /*DC=*/nullptr, Loc, + /*Id=*/nullptr, + KmpTaskTWithPrivatesPtrQTy.withRestrict()); + Args.push_back(&GtidArg); + Args.push_back(&TaskTypeArg); + FunctionType::ExtInfo Info; + auto &DestructorFnInfo = + CGM.getTypes().arrangeFreeFunctionDeclaration(KmpInt32Ty, Args, Info, + /*isVariadic=*/false); + auto *DestructorFnTy = CGM.getTypes().GetFunctionType(DestructorFnInfo); + auto *DestructorFn = + llvm::Function::Create(DestructorFnTy, llvm::GlobalValue::InternalLinkage, + ".omp_task_destructor.", &CGM.getModule()); + CGM.SetInternalFunctionAttributes(/*D=*/nullptr, DestructorFn, + DestructorFnInfo); + CodeGenFunction CGF(CGM); + CGF.disableDebugInfo(); + CGF.StartFunction(GlobalDecl(), KmpInt32Ty, DestructorFn, DestructorFnInfo, + Args); + + LValue Base = emitLoadOfPointerLValue( + CGF, CGF.GetAddrOfLocalVar(&TaskTypeArg), KmpTaskTWithPrivatesPtrQTy); + auto *KmpTaskTWithPrivatesQTyRD = + cast<RecordDecl>(KmpTaskTWithPrivatesQTy->getAsTagDecl()); + auto FI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin()); + Base = CGF.EmitLValueForField(Base, *FI); + for (auto *Field : + cast<RecordDecl>(FI->getType()->getAsTagDecl())->fields()) { + if (auto DtorKind = Field->getType().isDestructedType()) { + auto FieldLValue = CGF.EmitLValueForField(Base, Field); + CGF.pushDestroy(DtorKind, FieldLValue.getAddress(), Field->getType()); + } + } + CGF.FinishFunction(); + return DestructorFn; +} + +/// \brief Emit a privates mapping function for correct handling of private and +/// firstprivate variables. +/// \code +/// void .omp_task_privates_map.(const .privates. *noalias privs, <ty1> +/// **noalias priv1,..., <tyn> **noalias privn) { +/// *priv1 = &.privates.priv1; +/// ...; +/// *privn = &.privates.privn; +/// } +/// \endcode +static llvm::Value * +emitTaskPrivateMappingFunction(CodeGenModule &CGM, SourceLocation Loc, + ArrayRef<const Expr *> PrivateVars, + ArrayRef<const Expr *> FirstprivateVars, + QualType PrivatesQTy, + ArrayRef<PrivateDataTy> Privates) { + auto &C = CGM.getContext(); + FunctionArgList Args; + ImplicitParamDecl TaskPrivatesArg( + C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, + C.getPointerType(PrivatesQTy).withConst().withRestrict()); + Args.push_back(&TaskPrivatesArg); + llvm::DenseMap<const VarDecl *, unsigned> PrivateVarsPos; + unsigned Counter = 1; + for (auto *E: PrivateVars) { + Args.push_back(ImplicitParamDecl::Create( + C, /*DC=*/nullptr, Loc, + /*Id=*/nullptr, C.getPointerType(C.getPointerType(E->getType())) + .withConst() + .withRestrict())); + auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); + PrivateVarsPos[VD] = Counter; + ++Counter; + } + for (auto *E : FirstprivateVars) { + Args.push_back(ImplicitParamDecl::Create( + C, /*DC=*/nullptr, Loc, + /*Id=*/nullptr, C.getPointerType(C.getPointerType(E->getType())) + .withConst() + .withRestrict())); + auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); + PrivateVarsPos[VD] = Counter; + ++Counter; + } + FunctionType::ExtInfo Info; + auto &TaskPrivatesMapFnInfo = + CGM.getTypes().arrangeFreeFunctionDeclaration(C.VoidTy, Args, Info, + /*isVariadic=*/false); + auto *TaskPrivatesMapTy = + CGM.getTypes().GetFunctionType(TaskPrivatesMapFnInfo); + auto *TaskPrivatesMap = llvm::Function::Create( + TaskPrivatesMapTy, llvm::GlobalValue::InternalLinkage, + ".omp_task_privates_map.", &CGM.getModule()); + CGM.SetInternalFunctionAttributes(/*D=*/nullptr, TaskPrivatesMap, + TaskPrivatesMapFnInfo); + TaskPrivatesMap->addFnAttr(llvm::Attribute::AlwaysInline); + CodeGenFunction CGF(CGM); + CGF.disableDebugInfo(); + CGF.StartFunction(GlobalDecl(), C.VoidTy, TaskPrivatesMap, + TaskPrivatesMapFnInfo, Args); + + // *privi = &.privates.privi; + LValue Base = emitLoadOfPointerLValue( + CGF, CGF.GetAddrOfLocalVar(&TaskPrivatesArg), TaskPrivatesArg.getType()); + auto *PrivatesQTyRD = cast<RecordDecl>(PrivatesQTy->getAsTagDecl()); + Counter = 0; + for (auto *Field : PrivatesQTyRD->fields()) { + auto FieldLVal = CGF.EmitLValueForField(Base, Field); + auto *VD = Args[PrivateVarsPos[Privates[Counter].second.Original]]; + auto RefLVal = CGF.MakeAddrLValue(CGF.GetAddrOfLocalVar(VD), VD->getType()); + auto RefLoadLVal = + emitLoadOfPointerLValue(CGF, RefLVal.getAddress(), RefLVal.getType()); + CGF.EmitStoreOfScalar(FieldLVal.getPointer(), RefLoadLVal); + ++Counter; + } + CGF.FinishFunction(); + return TaskPrivatesMap; +} + +static int array_pod_sort_comparator(const PrivateDataTy *P1, + const PrivateDataTy *P2) { + return P1->first < P2->first ? 1 : (P2->first < P1->first ? -1 : 0); +} + +void CGOpenMPRuntime::emitTaskCall( + CodeGenFunction &CGF, SourceLocation Loc, const OMPExecutableDirective &D, + bool Tied, llvm::PointerIntPair<llvm::Value *, 1, bool> Final, + llvm::Value *TaskFunction, QualType SharedsTy, Address Shareds, + const Expr *IfCond, ArrayRef<const Expr *> PrivateVars, + ArrayRef<const Expr *> PrivateCopies, + ArrayRef<const Expr *> FirstprivateVars, + ArrayRef<const Expr *> FirstprivateCopies, + ArrayRef<const Expr *> FirstprivateInits, + ArrayRef<std::pair<OpenMPDependClauseKind, const Expr *>> Dependences) { + if (!CGF.HaveInsertPoint()) + return; + auto &C = CGM.getContext(); + llvm::SmallVector<PrivateDataTy, 8> Privates; + // Aggregate privates and sort them by the alignment. + auto I = PrivateCopies.begin(); + for (auto *E : PrivateVars) { + auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); + Privates.push_back(std::make_pair( + C.getDeclAlign(VD), + PrivateHelpersTy(VD, cast<VarDecl>(cast<DeclRefExpr>(*I)->getDecl()), + /*PrivateElemInit=*/nullptr))); + ++I; + } + I = FirstprivateCopies.begin(); + auto IElemInitRef = FirstprivateInits.begin(); + for (auto *E : FirstprivateVars) { + auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); + Privates.push_back(std::make_pair( + C.getDeclAlign(VD), + PrivateHelpersTy( + VD, cast<VarDecl>(cast<DeclRefExpr>(*I)->getDecl()), + cast<VarDecl>(cast<DeclRefExpr>(*IElemInitRef)->getDecl())))); + ++I, ++IElemInitRef; + } + llvm::array_pod_sort(Privates.begin(), Privates.end(), + array_pod_sort_comparator); + auto KmpInt32Ty = C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1); + // Build type kmp_routine_entry_t (if not built yet). + emitKmpRoutineEntryT(KmpInt32Ty); + // Build type kmp_task_t (if not built yet). + if (KmpTaskTQTy.isNull()) { + KmpTaskTQTy = C.getRecordType( + createKmpTaskTRecordDecl(CGM, KmpInt32Ty, KmpRoutineEntryPtrQTy)); + } + auto *KmpTaskTQTyRD = cast<RecordDecl>(KmpTaskTQTy->getAsTagDecl()); + // Build particular struct kmp_task_t for the given task. + auto *KmpTaskTWithPrivatesQTyRD = + createKmpTaskTWithPrivatesRecordDecl(CGM, KmpTaskTQTy, Privates); + auto KmpTaskTWithPrivatesQTy = C.getRecordType(KmpTaskTWithPrivatesQTyRD); + QualType KmpTaskTWithPrivatesPtrQTy = + C.getPointerType(KmpTaskTWithPrivatesQTy); + auto *KmpTaskTWithPrivatesTy = CGF.ConvertType(KmpTaskTWithPrivatesQTy); + auto *KmpTaskTWithPrivatesPtrTy = KmpTaskTWithPrivatesTy->getPointerTo(); + auto *KmpTaskTWithPrivatesTySize = getTypeSize(CGF, KmpTaskTWithPrivatesQTy); + QualType SharedsPtrTy = C.getPointerType(SharedsTy); + + // Emit initial values for private copies (if any). + llvm::Value *TaskPrivatesMap = nullptr; + auto *TaskPrivatesMapTy = + std::next(cast<llvm::Function>(TaskFunction)->getArgumentList().begin(), + 3) + ->getType(); + if (!Privates.empty()) { + auto FI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin()); + TaskPrivatesMap = emitTaskPrivateMappingFunction( + CGM, Loc, PrivateVars, FirstprivateVars, FI->getType(), Privates); + TaskPrivatesMap = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + TaskPrivatesMap, TaskPrivatesMapTy); + } else { + TaskPrivatesMap = llvm::ConstantPointerNull::get( + cast<llvm::PointerType>(TaskPrivatesMapTy)); + } + // Build a proxy function kmp_int32 .omp_task_entry.(kmp_int32 gtid, + // kmp_task_t *tt); + auto *TaskEntry = emitProxyTaskFunction( + CGM, Loc, KmpInt32Ty, KmpTaskTWithPrivatesPtrQTy, KmpTaskTWithPrivatesQTy, + KmpTaskTQTy, SharedsPtrTy, TaskFunction, TaskPrivatesMap); + + // Build call kmp_task_t * __kmpc_omp_task_alloc(ident_t *, kmp_int32 gtid, + // kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, + // kmp_routine_entry_t *task_entry); + // Task flags. Format is taken from + // http://llvm.org/svn/llvm-project/openmp/trunk/runtime/src/kmp.h, + // description of kmp_tasking_flags struct. + const unsigned TiedFlag = 0x1; + const unsigned FinalFlag = 0x2; + unsigned Flags = Tied ? TiedFlag : 0; + auto *TaskFlags = + Final.getPointer() + ? CGF.Builder.CreateSelect(Final.getPointer(), + CGF.Builder.getInt32(FinalFlag), + CGF.Builder.getInt32(/*C=*/0)) + : CGF.Builder.getInt32(Final.getInt() ? FinalFlag : 0); + TaskFlags = CGF.Builder.CreateOr(TaskFlags, CGF.Builder.getInt32(Flags)); + auto *SharedsSize = CGM.getSize(C.getTypeSizeInChars(SharedsTy)); + llvm::Value *AllocArgs[] = {emitUpdateLocation(CGF, Loc), + getThreadID(CGF, Loc), TaskFlags, + KmpTaskTWithPrivatesTySize, SharedsSize, + CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + TaskEntry, KmpRoutineEntryPtrTy)}; + auto *NewTask = CGF.EmitRuntimeCall( + createRuntimeFunction(OMPRTL__kmpc_omp_task_alloc), AllocArgs); + auto *NewTaskNewTaskTTy = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + NewTask, KmpTaskTWithPrivatesPtrTy); + LValue Base = CGF.MakeNaturalAlignAddrLValue(NewTaskNewTaskTTy, + KmpTaskTWithPrivatesQTy); + LValue TDBase = + CGF.EmitLValueForField(Base, *KmpTaskTWithPrivatesQTyRD->field_begin()); + // Fill the data in the resulting kmp_task_t record. + // Copy shareds if there are any. + Address KmpTaskSharedsPtr = Address::invalid(); + if (!SharedsTy->getAsStructureType()->getDecl()->field_empty()) { + KmpTaskSharedsPtr = + Address(CGF.EmitLoadOfScalar( + CGF.EmitLValueForField( + TDBase, *std::next(KmpTaskTQTyRD->field_begin(), + KmpTaskTShareds)), + Loc), + CGF.getNaturalTypeAlignment(SharedsTy)); + CGF.EmitAggregateCopy(KmpTaskSharedsPtr, Shareds, SharedsTy); + } + // Emit initial values for private copies (if any). + bool NeedsCleanup = false; + if (!Privates.empty()) { + auto FI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin()); + auto PrivatesBase = CGF.EmitLValueForField(Base, *FI); + FI = cast<RecordDecl>(FI->getType()->getAsTagDecl())->field_begin(); + LValue SharedsBase; + if (!FirstprivateVars.empty()) { + SharedsBase = CGF.MakeAddrLValue( + CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + KmpTaskSharedsPtr, CGF.ConvertTypeForMem(SharedsPtrTy)), + SharedsTy); + } + CodeGenFunction::CGCapturedStmtInfo CapturesInfo( + cast<CapturedStmt>(*D.getAssociatedStmt())); + for (auto &&Pair : Privates) { + auto *VD = Pair.second.PrivateCopy; + auto *Init = VD->getAnyInitializer(); + LValue PrivateLValue = CGF.EmitLValueForField(PrivatesBase, *FI); + if (Init) { + if (auto *Elem = Pair.second.PrivateElemInit) { + auto *OriginalVD = Pair.second.Original; + auto *SharedField = CapturesInfo.lookup(OriginalVD); + auto SharedRefLValue = + CGF.EmitLValueForField(SharedsBase, SharedField); + SharedRefLValue = CGF.MakeAddrLValue( + Address(SharedRefLValue.getPointer(), C.getDeclAlign(OriginalVD)), + SharedRefLValue.getType(), AlignmentSource::Decl); + QualType Type = OriginalVD->getType(); + if (Type->isArrayType()) { + // Initialize firstprivate array. + if (!isa<CXXConstructExpr>(Init) || + CGF.isTrivialInitializer(Init)) { + // Perform simple memcpy. + CGF.EmitAggregateAssign(PrivateLValue.getAddress(), + SharedRefLValue.getAddress(), Type); + } else { + // Initialize firstprivate array using element-by-element + // intialization. + CGF.EmitOMPAggregateAssign( + PrivateLValue.getAddress(), SharedRefLValue.getAddress(), + Type, [&CGF, Elem, Init, &CapturesInfo]( + Address DestElement, Address SrcElement) { + // Clean up any temporaries needed by the initialization. + CodeGenFunction::OMPPrivateScope InitScope(CGF); + InitScope.addPrivate(Elem, [SrcElement]() -> Address { + return SrcElement; + }); + (void)InitScope.Privatize(); + // Emit initialization for single element. + CodeGenFunction::CGCapturedStmtRAII CapInfoRAII( + CGF, &CapturesInfo); + CGF.EmitAnyExprToMem(Init, DestElement, + Init->getType().getQualifiers(), + /*IsInitializer=*/false); + }); + } + } else { + CodeGenFunction::OMPPrivateScope InitScope(CGF); + InitScope.addPrivate(Elem, [SharedRefLValue]() -> Address { + return SharedRefLValue.getAddress(); + }); + (void)InitScope.Privatize(); + CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CapturesInfo); + CGF.EmitExprAsInit(Init, VD, PrivateLValue, + /*capturedByInit=*/false); + } + } else { + CGF.EmitExprAsInit(Init, VD, PrivateLValue, /*capturedByInit=*/false); + } + } + NeedsCleanup = NeedsCleanup || FI->getType().isDestructedType(); + ++FI; + } + } + // Provide pointer to function with destructors for privates. + llvm::Value *DestructorFn = + NeedsCleanup ? emitDestructorsFunction(CGM, Loc, KmpInt32Ty, + KmpTaskTWithPrivatesPtrQTy, + KmpTaskTWithPrivatesQTy) + : llvm::ConstantPointerNull::get( + cast<llvm::PointerType>(KmpRoutineEntryPtrTy)); + LValue Destructor = CGF.EmitLValueForField( + TDBase, *std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTDestructors)); + CGF.EmitStoreOfScalar(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + DestructorFn, KmpRoutineEntryPtrTy), + Destructor); + + // Process list of dependences. + Address DependenciesArray = Address::invalid(); + unsigned NumDependencies = Dependences.size(); + if (NumDependencies) { + // Dependence kind for RTL. + enum RTLDependenceKindTy { DepIn = 0x01, DepInOut = 0x3 }; + enum RTLDependInfoFieldsTy { BaseAddr, Len, Flags }; + RecordDecl *KmpDependInfoRD; + QualType FlagsTy = + C.getIntTypeForBitwidth(C.getTypeSize(C.BoolTy), /*Signed=*/false); + llvm::Type *LLVMFlagsTy = CGF.ConvertTypeForMem(FlagsTy); + if (KmpDependInfoTy.isNull()) { + KmpDependInfoRD = C.buildImplicitRecord("kmp_depend_info"); + KmpDependInfoRD->startDefinition(); + addFieldToRecordDecl(C, KmpDependInfoRD, C.getIntPtrType()); + addFieldToRecordDecl(C, KmpDependInfoRD, C.getSizeType()); + addFieldToRecordDecl(C, KmpDependInfoRD, FlagsTy); + KmpDependInfoRD->completeDefinition(); + KmpDependInfoTy = C.getRecordType(KmpDependInfoRD); + } else { + KmpDependInfoRD = cast<RecordDecl>(KmpDependInfoTy->getAsTagDecl()); + } + CharUnits DependencySize = C.getTypeSizeInChars(KmpDependInfoTy); + // Define type kmp_depend_info[<Dependences.size()>]; + QualType KmpDependInfoArrayTy = C.getConstantArrayType( + KmpDependInfoTy, llvm::APInt(/*numBits=*/64, NumDependencies), + ArrayType::Normal, /*IndexTypeQuals=*/0); + // kmp_depend_info[<Dependences.size()>] deps; + DependenciesArray = CGF.CreateMemTemp(KmpDependInfoArrayTy); + for (unsigned i = 0; i < NumDependencies; ++i) { + const Expr *E = Dependences[i].second; + auto Addr = CGF.EmitLValue(E); + llvm::Value *Size; + QualType Ty = E->getType(); + if (auto *ASE = dyn_cast<OMPArraySectionExpr>(E->IgnoreParenImpCasts())) { + LValue UpAddrLVal = + CGF.EmitOMPArraySectionExpr(ASE, /*LowerBound=*/false); + llvm::Value *UpAddr = + CGF.Builder.CreateConstGEP1_32(UpAddrLVal.getPointer(), /*Idx0=*/1); + llvm::Value *LowIntPtr = + CGF.Builder.CreatePtrToInt(Addr.getPointer(), CGM.SizeTy); + llvm::Value *UpIntPtr = CGF.Builder.CreatePtrToInt(UpAddr, CGM.SizeTy); + Size = CGF.Builder.CreateNUWSub(UpIntPtr, LowIntPtr); + } else + Size = getTypeSize(CGF, Ty); + auto Base = CGF.MakeAddrLValue( + CGF.Builder.CreateConstArrayGEP(DependenciesArray, i, DependencySize), + KmpDependInfoTy); + // deps[i].base_addr = &<Dependences[i].second>; + auto BaseAddrLVal = CGF.EmitLValueForField( + Base, *std::next(KmpDependInfoRD->field_begin(), BaseAddr)); + CGF.EmitStoreOfScalar( + CGF.Builder.CreatePtrToInt(Addr.getPointer(), CGF.IntPtrTy), + BaseAddrLVal); + // deps[i].len = sizeof(<Dependences[i].second>); + auto LenLVal = CGF.EmitLValueForField( + Base, *std::next(KmpDependInfoRD->field_begin(), Len)); + CGF.EmitStoreOfScalar(Size, LenLVal); + // deps[i].flags = <Dependences[i].first>; + RTLDependenceKindTy DepKind; + switch (Dependences[i].first) { + case OMPC_DEPEND_in: + DepKind = DepIn; + break; + // Out and InOut dependencies must use the same code. + case OMPC_DEPEND_out: + case OMPC_DEPEND_inout: + DepKind = DepInOut; + break; + case OMPC_DEPEND_source: + case OMPC_DEPEND_sink: + case OMPC_DEPEND_unknown: + llvm_unreachable("Unknown task dependence type"); + } + auto FlagsLVal = CGF.EmitLValueForField( + Base, *std::next(KmpDependInfoRD->field_begin(), Flags)); + CGF.EmitStoreOfScalar(llvm::ConstantInt::get(LLVMFlagsTy, DepKind), + FlagsLVal); + } + DependenciesArray = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.Builder.CreateStructGEP(DependenciesArray, 0, CharUnits::Zero()), + CGF.VoidPtrTy); + } + + // NOTE: routine and part_id fields are intialized by __kmpc_omp_task_alloc() + // libcall. + // Build kmp_int32 __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t + // *new_task); + // Build kmp_int32 __kmpc_omp_task_with_deps(ident_t *, kmp_int32 gtid, + // kmp_task_t *new_task, kmp_int32 ndeps, kmp_depend_info_t *dep_list, + // kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list) if dependence + // list is not empty + auto *ThreadID = getThreadID(CGF, Loc); + auto *UpLoc = emitUpdateLocation(CGF, Loc); + llvm::Value *TaskArgs[] = { UpLoc, ThreadID, NewTask }; + llvm::Value *DepTaskArgs[7]; + if (NumDependencies) { + DepTaskArgs[0] = UpLoc; + DepTaskArgs[1] = ThreadID; + DepTaskArgs[2] = NewTask; + DepTaskArgs[3] = CGF.Builder.getInt32(NumDependencies); + DepTaskArgs[4] = DependenciesArray.getPointer(); + DepTaskArgs[5] = CGF.Builder.getInt32(0); + DepTaskArgs[6] = llvm::ConstantPointerNull::get(CGF.VoidPtrTy); + } + auto &&ThenCodeGen = [this, NumDependencies, + &TaskArgs, &DepTaskArgs](CodeGenFunction &CGF) { + // TODO: add check for untied tasks. + if (NumDependencies) { + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_task_with_deps), + DepTaskArgs); + } else { + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_task), + TaskArgs); + } + }; + typedef CallEndCleanup<std::extent<decltype(TaskArgs)>::value> + IfCallEndCleanup; + + llvm::Value *DepWaitTaskArgs[6]; + if (NumDependencies) { + DepWaitTaskArgs[0] = UpLoc; + DepWaitTaskArgs[1] = ThreadID; + DepWaitTaskArgs[2] = CGF.Builder.getInt32(NumDependencies); + DepWaitTaskArgs[3] = DependenciesArray.getPointer(); + DepWaitTaskArgs[4] = CGF.Builder.getInt32(0); + DepWaitTaskArgs[5] = llvm::ConstantPointerNull::get(CGF.VoidPtrTy); + } + auto &&ElseCodeGen = [this, &TaskArgs, ThreadID, NewTaskNewTaskTTy, TaskEntry, + NumDependencies, &DepWaitTaskArgs](CodeGenFunction &CGF) { + CodeGenFunction::RunCleanupsScope LocalScope(CGF); + // Build void __kmpc_omp_wait_deps(ident_t *, kmp_int32 gtid, + // kmp_int32 ndeps, kmp_depend_info_t *dep_list, kmp_int32 + // ndeps_noalias, kmp_depend_info_t *noalias_dep_list); if dependence info + // is specified. + if (NumDependencies) + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_wait_deps), + DepWaitTaskArgs); + // Build void __kmpc_omp_task_begin_if0(ident_t *, kmp_int32 gtid, + // kmp_task_t *new_task); + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_task_begin_if0), + TaskArgs); + // Build void __kmpc_omp_task_complete_if0(ident_t *, kmp_int32 gtid, + // kmp_task_t *new_task); + CGF.EHStack.pushCleanup<IfCallEndCleanup>( + NormalAndEHCleanup, + createRuntimeFunction(OMPRTL__kmpc_omp_task_complete_if0), + llvm::makeArrayRef(TaskArgs)); + + // Call proxy_task_entry(gtid, new_task); + llvm::Value *OutlinedFnArgs[] = {ThreadID, NewTaskNewTaskTTy}; + CGF.EmitCallOrInvoke(TaskEntry, OutlinedFnArgs); + }; + + if (IfCond) { + emitOMPIfClause(CGF, IfCond, ThenCodeGen, ElseCodeGen); + } else { + CodeGenFunction::RunCleanupsScope Scope(CGF); + ThenCodeGen(CGF); + } +} + +/// \brief Emit reduction operation for each element of array (required for +/// array sections) LHS op = RHS. +/// \param Type Type of array. +/// \param LHSVar Variable on the left side of the reduction operation +/// (references element of array in original variable). +/// \param RHSVar Variable on the right side of the reduction operation +/// (references element of array in original variable). +/// \param RedOpGen Generator of reduction operation with use of LHSVar and +/// RHSVar. +static void EmitOMPAggregateReduction( + CodeGenFunction &CGF, QualType Type, const VarDecl *LHSVar, + const VarDecl *RHSVar, + const llvm::function_ref<void(CodeGenFunction &CGF, const Expr *, + const Expr *, const Expr *)> &RedOpGen, + const Expr *XExpr = nullptr, const Expr *EExpr = nullptr, + const Expr *UpExpr = nullptr) { + // Perform element-by-element initialization. + QualType ElementTy; + Address LHSAddr = CGF.GetAddrOfLocalVar(LHSVar); + Address RHSAddr = CGF.GetAddrOfLocalVar(RHSVar); + + // Drill down to the base element type on both arrays. + auto ArrayTy = Type->getAsArrayTypeUnsafe(); + auto NumElements = CGF.emitArrayLength(ArrayTy, ElementTy, LHSAddr); + + auto RHSBegin = RHSAddr.getPointer(); + auto LHSBegin = LHSAddr.getPointer(); + // Cast from pointer to array type to pointer to single element. + auto LHSEnd = CGF.Builder.CreateGEP(LHSBegin, NumElements); + // The basic structure here is a while-do loop. + auto BodyBB = CGF.createBasicBlock("omp.arraycpy.body"); + auto DoneBB = CGF.createBasicBlock("omp.arraycpy.done"); + auto IsEmpty = + CGF.Builder.CreateICmpEQ(LHSBegin, LHSEnd, "omp.arraycpy.isempty"); + CGF.Builder.CreateCondBr(IsEmpty, DoneBB, BodyBB); + + // Enter the loop body, making that address the current address. + auto EntryBB = CGF.Builder.GetInsertBlock(); + CGF.EmitBlock(BodyBB); + + CharUnits ElementSize = CGF.getContext().getTypeSizeInChars(ElementTy); + + llvm::PHINode *RHSElementPHI = CGF.Builder.CreatePHI( + RHSBegin->getType(), 2, "omp.arraycpy.srcElementPast"); + RHSElementPHI->addIncoming(RHSBegin, EntryBB); + Address RHSElementCurrent = + Address(RHSElementPHI, + RHSAddr.getAlignment().alignmentOfArrayElement(ElementSize)); + + llvm::PHINode *LHSElementPHI = CGF.Builder.CreatePHI( + LHSBegin->getType(), 2, "omp.arraycpy.destElementPast"); + LHSElementPHI->addIncoming(LHSBegin, EntryBB); + Address LHSElementCurrent = + Address(LHSElementPHI, + LHSAddr.getAlignment().alignmentOfArrayElement(ElementSize)); + + // Emit copy. + CodeGenFunction::OMPPrivateScope Scope(CGF); + Scope.addPrivate(LHSVar, [=]() -> Address { return LHSElementCurrent; }); + Scope.addPrivate(RHSVar, [=]() -> Address { return RHSElementCurrent; }); + Scope.Privatize(); + RedOpGen(CGF, XExpr, EExpr, UpExpr); + Scope.ForceCleanup(); + + // Shift the address forward by one element. + auto LHSElementNext = CGF.Builder.CreateConstGEP1_32( + LHSElementPHI, /*Idx0=*/1, "omp.arraycpy.dest.element"); + auto RHSElementNext = CGF.Builder.CreateConstGEP1_32( + RHSElementPHI, /*Idx0=*/1, "omp.arraycpy.src.element"); + // Check whether we've reached the end. + auto Done = + CGF.Builder.CreateICmpEQ(LHSElementNext, LHSEnd, "omp.arraycpy.done"); + CGF.Builder.CreateCondBr(Done, DoneBB, BodyBB); + LHSElementPHI->addIncoming(LHSElementNext, CGF.Builder.GetInsertBlock()); + RHSElementPHI->addIncoming(RHSElementNext, CGF.Builder.GetInsertBlock()); + + // Done. + CGF.EmitBlock(DoneBB, /*IsFinished=*/true); +} + +static llvm::Value *emitReductionFunction(CodeGenModule &CGM, + llvm::Type *ArgsType, + ArrayRef<const Expr *> Privates, + ArrayRef<const Expr *> LHSExprs, + ArrayRef<const Expr *> RHSExprs, + ArrayRef<const Expr *> ReductionOps) { + auto &C = CGM.getContext(); + + // void reduction_func(void *LHSArg, void *RHSArg); + FunctionArgList Args; + ImplicitParamDecl LHSArg(C, /*DC=*/nullptr, SourceLocation(), /*Id=*/nullptr, + C.VoidPtrTy); + ImplicitParamDecl RHSArg(C, /*DC=*/nullptr, SourceLocation(), /*Id=*/nullptr, + C.VoidPtrTy); + Args.push_back(&LHSArg); + Args.push_back(&RHSArg); + FunctionType::ExtInfo EI; + auto &CGFI = CGM.getTypes().arrangeFreeFunctionDeclaration( + C.VoidTy, Args, EI, /*isVariadic=*/false); + auto *Fn = llvm::Function::Create( + CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage, + ".omp.reduction.reduction_func", &CGM.getModule()); + CGM.SetInternalFunctionAttributes(/*D=*/nullptr, Fn, CGFI); + CodeGenFunction CGF(CGM); + CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args); + + // Dst = (void*[n])(LHSArg); + // Src = (void*[n])(RHSArg); + Address LHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&LHSArg)), + ArgsType), CGF.getPointerAlign()); + Address RHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&RHSArg)), + ArgsType), CGF.getPointerAlign()); + + // ... + // *(Type<i>*)lhs[i] = RedOp<i>(*(Type<i>*)lhs[i], *(Type<i>*)rhs[i]); + // ... + CodeGenFunction::OMPPrivateScope Scope(CGF); + auto IPriv = Privates.begin(); + unsigned Idx = 0; + for (unsigned I = 0, E = ReductionOps.size(); I < E; ++I, ++IPriv, ++Idx) { + auto RHSVar = cast<VarDecl>(cast<DeclRefExpr>(RHSExprs[I])->getDecl()); + Scope.addPrivate(RHSVar, [&]() -> Address { + return emitAddrOfVarFromArray(CGF, RHS, Idx, RHSVar); + }); + auto LHSVar = cast<VarDecl>(cast<DeclRefExpr>(LHSExprs[I])->getDecl()); + Scope.addPrivate(LHSVar, [&]() -> Address { + return emitAddrOfVarFromArray(CGF, LHS, Idx, LHSVar); + }); + QualType PrivTy = (*IPriv)->getType(); + if (PrivTy->isArrayType()) { + // Get array size and emit VLA type. + ++Idx; + Address Elem = + CGF.Builder.CreateConstArrayGEP(LHS, Idx, CGF.getPointerSize()); + llvm::Value *Ptr = CGF.Builder.CreateLoad(Elem); + CodeGenFunction::OpaqueValueMapping OpaqueMap( + CGF, + cast<OpaqueValueExpr>( + CGF.getContext().getAsVariableArrayType(PrivTy)->getSizeExpr()), + RValue::get(CGF.Builder.CreatePtrToInt(Ptr, CGF.SizeTy))); + CGF.EmitVariablyModifiedType(PrivTy); + } + } + Scope.Privatize(); + IPriv = Privates.begin(); + auto ILHS = LHSExprs.begin(); + auto IRHS = RHSExprs.begin(); + for (auto *E : ReductionOps) { + if ((*IPriv)->getType()->isArrayType()) { + // Emit reduction for array section. + auto *LHSVar = cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); + auto *RHSVar = cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); + EmitOMPAggregateReduction(CGF, (*IPriv)->getType(), LHSVar, RHSVar, + [=](CodeGenFunction &CGF, const Expr *, + const Expr *, + const Expr *) { CGF.EmitIgnoredExpr(E); }); + } else + // Emit reduction for array subscript or single variable. + CGF.EmitIgnoredExpr(E); + ++IPriv, ++ILHS, ++IRHS; + } + Scope.ForceCleanup(); + CGF.FinishFunction(); + return Fn; +} + +void CGOpenMPRuntime::emitReduction(CodeGenFunction &CGF, SourceLocation Loc, + ArrayRef<const Expr *> Privates, + ArrayRef<const Expr *> LHSExprs, + ArrayRef<const Expr *> RHSExprs, + ArrayRef<const Expr *> ReductionOps, + bool WithNowait, bool SimpleReduction) { + if (!CGF.HaveInsertPoint()) + return; + // Next code should be emitted for reduction: + // + // static kmp_critical_name lock = { 0 }; + // + // void reduce_func(void *lhs[<n>], void *rhs[<n>]) { + // *(Type0*)lhs[0] = ReductionOperation0(*(Type0*)lhs[0], *(Type0*)rhs[0]); + // ... + // *(Type<n>-1*)lhs[<n>-1] = ReductionOperation<n>-1(*(Type<n>-1*)lhs[<n>-1], + // *(Type<n>-1*)rhs[<n>-1]); + // } + // + // ... + // void *RedList[<n>] = {&<RHSExprs>[0], ..., &<RHSExprs>[<n>-1]}; + // switch (__kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), + // RedList, reduce_func, &<lock>)) { + // case 1: + // ... + // <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); + // ... + // __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); + // break; + // case 2: + // ... + // Atomic(<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i])); + // ... + // [__kmpc_end_reduce(<loc>, <gtid>, &<lock>);] + // break; + // default:; + // } + // + // if SimpleReduction is true, only the next code is generated: + // ... + // <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); + // ... + + auto &C = CGM.getContext(); + + if (SimpleReduction) { + CodeGenFunction::RunCleanupsScope Scope(CGF); + auto IPriv = Privates.begin(); + auto ILHS = LHSExprs.begin(); + auto IRHS = RHSExprs.begin(); + for (auto *E : ReductionOps) { + if ((*IPriv)->getType()->isArrayType()) { + auto *LHSVar = cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); + auto *RHSVar = cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); + EmitOMPAggregateReduction( + CGF, (*IPriv)->getType(), LHSVar, RHSVar, + [=](CodeGenFunction &CGF, const Expr *, const Expr *, + const Expr *) { CGF.EmitIgnoredExpr(E); }); + } else + CGF.EmitIgnoredExpr(E); + ++IPriv, ++ILHS, ++IRHS; + } + return; + } + + // 1. Build a list of reduction variables. + // void *RedList[<n>] = {<ReductionVars>[0], ..., <ReductionVars>[<n>-1]}; + auto Size = RHSExprs.size(); + for (auto *E : Privates) { + if (E->getType()->isArrayType()) + // Reserve place for array size. + ++Size; + } + llvm::APInt ArraySize(/*unsigned int numBits=*/32, Size); + QualType ReductionArrayTy = + C.getConstantArrayType(C.VoidPtrTy, ArraySize, ArrayType::Normal, + /*IndexTypeQuals=*/0); + Address ReductionList = + CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list"); + auto IPriv = Privates.begin(); + unsigned Idx = 0; + for (unsigned I = 0, E = RHSExprs.size(); I < E; ++I, ++IPriv, ++Idx) { + Address Elem = + CGF.Builder.CreateConstArrayGEP(ReductionList, Idx, CGF.getPointerSize()); + CGF.Builder.CreateStore( + CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( + CGF.EmitLValue(RHSExprs[I]).getPointer(), CGF.VoidPtrTy), + Elem); + if ((*IPriv)->getType()->isArrayType()) { + // Store array size. + ++Idx; + Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx, + CGF.getPointerSize()); + CGF.Builder.CreateStore( + CGF.Builder.CreateIntToPtr( + CGF.Builder.CreateIntCast( + CGF.getVLASize(CGF.getContext().getAsVariableArrayType( + (*IPriv)->getType())) + .first, + CGF.SizeTy, /*isSigned=*/false), + CGF.VoidPtrTy), + Elem); + } + } + + // 2. Emit reduce_func(). + auto *ReductionFn = emitReductionFunction( + CGM, CGF.ConvertTypeForMem(ReductionArrayTy)->getPointerTo(), Privates, + LHSExprs, RHSExprs, ReductionOps); + + // 3. Create static kmp_critical_name lock = { 0 }; + auto *Lock = getCriticalRegionLock(".reduction"); + + // 4. Build res = __kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), + // RedList, reduce_func, &<lock>); + auto *IdentTLoc = emitUpdateLocation( + CGF, Loc, + static_cast<OpenMPLocationFlags>(OMP_IDENT_KMPC | OMP_ATOMIC_REDUCE)); + auto *ThreadId = getThreadID(CGF, Loc); + auto *ReductionArrayTySize = getTypeSize(CGF, ReductionArrayTy); + auto *RL = + CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(ReductionList.getPointer(), + CGF.VoidPtrTy); + llvm::Value *Args[] = { + IdentTLoc, // ident_t *<loc> + ThreadId, // i32 <gtid> + CGF.Builder.getInt32(RHSExprs.size()), // i32 <n> + ReductionArrayTySize, // size_type sizeof(RedList) + RL, // void *RedList + ReductionFn, // void (*) (void *, void *) <reduce_func> + Lock // kmp_critical_name *&<lock> + }; + auto Res = CGF.EmitRuntimeCall( + createRuntimeFunction(WithNowait ? OMPRTL__kmpc_reduce_nowait + : OMPRTL__kmpc_reduce), + Args); + + // 5. Build switch(res) + auto *DefaultBB = CGF.createBasicBlock(".omp.reduction.default"); + auto *SwInst = CGF.Builder.CreateSwitch(Res, DefaultBB, /*NumCases=*/2); + + // 6. Build case 1: + // ... + // <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); + // ... + // __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); + // break; + auto *Case1BB = CGF.createBasicBlock(".omp.reduction.case1"); + SwInst->addCase(CGF.Builder.getInt32(1), Case1BB); + CGF.EmitBlock(Case1BB); + + { + CodeGenFunction::RunCleanupsScope Scope(CGF); + // Add emission of __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); + llvm::Value *EndArgs[] = { + IdentTLoc, // ident_t *<loc> + ThreadId, // i32 <gtid> + Lock // kmp_critical_name *&<lock> + }; + CGF.EHStack + .pushCleanup<CallEndCleanup<std::extent<decltype(EndArgs)>::value>>( + NormalAndEHCleanup, + createRuntimeFunction(WithNowait ? OMPRTL__kmpc_end_reduce_nowait + : OMPRTL__kmpc_end_reduce), + llvm::makeArrayRef(EndArgs)); + auto IPriv = Privates.begin(); + auto ILHS = LHSExprs.begin(); + auto IRHS = RHSExprs.begin(); + for (auto *E : ReductionOps) { + if ((*IPriv)->getType()->isArrayType()) { + // Emit reduction for array section. + auto *LHSVar = cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); + auto *RHSVar = cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); + EmitOMPAggregateReduction( + CGF, (*IPriv)->getType(), LHSVar, RHSVar, + [=](CodeGenFunction &CGF, const Expr *, const Expr *, + const Expr *) { CGF.EmitIgnoredExpr(E); }); + } else + // Emit reduction for array subscript or single variable. + CGF.EmitIgnoredExpr(E); + ++IPriv, ++ILHS, ++IRHS; + } + } + + CGF.EmitBranch(DefaultBB); + + // 7. Build case 2: + // ... + // Atomic(<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i])); + // ... + // break; + auto *Case2BB = CGF.createBasicBlock(".omp.reduction.case2"); + SwInst->addCase(CGF.Builder.getInt32(2), Case2BB); + CGF.EmitBlock(Case2BB); + + { + CodeGenFunction::RunCleanupsScope Scope(CGF); + if (!WithNowait) { + // Add emission of __kmpc_end_reduce(<loc>, <gtid>, &<lock>); + llvm::Value *EndArgs[] = { + IdentTLoc, // ident_t *<loc> + ThreadId, // i32 <gtid> + Lock // kmp_critical_name *&<lock> + }; + CGF.EHStack + .pushCleanup<CallEndCleanup<std::extent<decltype(EndArgs)>::value>>( + NormalAndEHCleanup, + createRuntimeFunction(OMPRTL__kmpc_end_reduce), + llvm::makeArrayRef(EndArgs)); + } + auto ILHS = LHSExprs.begin(); + auto IRHS = RHSExprs.begin(); + auto IPriv = Privates.begin(); + for (auto *E : ReductionOps) { + const Expr *XExpr = nullptr; + const Expr *EExpr = nullptr; + const Expr *UpExpr = nullptr; + BinaryOperatorKind BO = BO_Comma; + if (auto *BO = dyn_cast<BinaryOperator>(E)) { + if (BO->getOpcode() == BO_Assign) { + XExpr = BO->getLHS(); + UpExpr = BO->getRHS(); + } + } + // Try to emit update expression as a simple atomic. + auto *RHSExpr = UpExpr; + if (RHSExpr) { + // Analyze RHS part of the whole expression. + if (auto *ACO = dyn_cast<AbstractConditionalOperator>( + RHSExpr->IgnoreParenImpCasts())) { + // If this is a conditional operator, analyze its condition for + // min/max reduction operator. + RHSExpr = ACO->getCond(); + } + if (auto *BORHS = + dyn_cast<BinaryOperator>(RHSExpr->IgnoreParenImpCasts())) { + EExpr = BORHS->getRHS(); + BO = BORHS->getOpcode(); + } + } + if (XExpr) { + auto *VD = cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); + auto &&AtomicRedGen = [this, BO, VD, IPriv, + Loc](CodeGenFunction &CGF, const Expr *XExpr, + const Expr *EExpr, const Expr *UpExpr) { + LValue X = CGF.EmitLValue(XExpr); + RValue E; + if (EExpr) + E = CGF.EmitAnyExpr(EExpr); + CGF.EmitOMPAtomicSimpleUpdateExpr( + X, E, BO, /*IsXLHSInRHSPart=*/true, llvm::Monotonic, Loc, + [&CGF, UpExpr, VD, IPriv](RValue XRValue) { + CodeGenFunction::OMPPrivateScope PrivateScope(CGF); + PrivateScope.addPrivate(VD, [&CGF, VD, XRValue]() -> Address { + Address LHSTemp = CGF.CreateMemTemp(VD->getType()); + CGF.EmitStoreThroughLValue( + XRValue, CGF.MakeAddrLValue(LHSTemp, VD->getType())); + return LHSTemp; + }); + (void)PrivateScope.Privatize(); + return CGF.EmitAnyExpr(UpExpr); + }); + }; + if ((*IPriv)->getType()->isArrayType()) { + // Emit atomic reduction for array section. + auto *RHSVar = cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); + EmitOMPAggregateReduction(CGF, (*IPriv)->getType(), VD, RHSVar, + AtomicRedGen, XExpr, EExpr, UpExpr); + } else + // Emit atomic reduction for array subscript or single variable. + AtomicRedGen(CGF, XExpr, EExpr, UpExpr); + } else { + // Emit as a critical region. + auto &&CritRedGen = [this, E, Loc](CodeGenFunction &CGF, const Expr *, + const Expr *, const Expr *) { + emitCriticalRegion( + CGF, ".atomic_reduction", + [E](CodeGenFunction &CGF) { CGF.EmitIgnoredExpr(E); }, Loc); + }; + if ((*IPriv)->getType()->isArrayType()) { + auto *LHSVar = cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); + auto *RHSVar = cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); + EmitOMPAggregateReduction(CGF, (*IPriv)->getType(), LHSVar, RHSVar, + CritRedGen); + } else + CritRedGen(CGF, nullptr, nullptr, nullptr); + } + ++ILHS, ++IRHS, ++IPriv; + } + } + + CGF.EmitBranch(DefaultBB); + CGF.EmitBlock(DefaultBB, /*IsFinished=*/true); +} + +void CGOpenMPRuntime::emitTaskwaitCall(CodeGenFunction &CGF, + SourceLocation Loc) { + if (!CGF.HaveInsertPoint()) + return; + // Build call kmp_int32 __kmpc_omp_taskwait(ident_t *loc, kmp_int32 + // global_tid); + llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; + // Ignore return result until untied tasks are supported. + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_taskwait), Args); +} + +void CGOpenMPRuntime::emitInlinedDirective(CodeGenFunction &CGF, + OpenMPDirectiveKind InnerKind, + const RegionCodeGenTy &CodeGen, + bool HasCancel) { + if (!CGF.HaveInsertPoint()) + return; + InlinedOpenMPRegionRAII Region(CGF, CodeGen, InnerKind, HasCancel); + CGF.CapturedStmtInfo->EmitBody(CGF, /*S=*/nullptr); +} + +namespace { +enum RTCancelKind { + CancelNoreq = 0, + CancelParallel = 1, + CancelLoop = 2, + CancelSections = 3, + CancelTaskgroup = 4 +}; +} + +static RTCancelKind getCancellationKind(OpenMPDirectiveKind CancelRegion) { + RTCancelKind CancelKind = CancelNoreq; + if (CancelRegion == OMPD_parallel) + CancelKind = CancelParallel; + else if (CancelRegion == OMPD_for) + CancelKind = CancelLoop; + else if (CancelRegion == OMPD_sections) + CancelKind = CancelSections; + else { + assert(CancelRegion == OMPD_taskgroup); + CancelKind = CancelTaskgroup; + } + return CancelKind; +} + +void CGOpenMPRuntime::emitCancellationPointCall( + CodeGenFunction &CGF, SourceLocation Loc, + OpenMPDirectiveKind CancelRegion) { + if (!CGF.HaveInsertPoint()) + return; + // Build call kmp_int32 __kmpc_cancellationpoint(ident_t *loc, kmp_int32 + // global_tid, kmp_int32 cncl_kind); + if (auto *OMPRegionInfo = + dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) { + if (OMPRegionInfo->getDirectiveKind() == OMPD_single) + return; + if (OMPRegionInfo->hasCancel()) { + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), + CGF.Builder.getInt32(getCancellationKind(CancelRegion))}; + // Ignore return result until untied tasks are supported. + auto *Result = CGF.EmitRuntimeCall( + createRuntimeFunction(OMPRTL__kmpc_cancellationpoint), Args); + // if (__kmpc_cancellationpoint()) { + // __kmpc_cancel_barrier(); + // exit from construct; + // } + auto *ExitBB = CGF.createBasicBlock(".cancel.exit"); + auto *ContBB = CGF.createBasicBlock(".cancel.continue"); + auto *Cmp = CGF.Builder.CreateIsNotNull(Result); + CGF.Builder.CreateCondBr(Cmp, ExitBB, ContBB); + CGF.EmitBlock(ExitBB); + // __kmpc_cancel_barrier(); + emitBarrierCall(CGF, Loc, OMPD_unknown, /*EmitChecks=*/false); + // exit from construct; + auto CancelDest = + CGF.getOMPCancelDestination(OMPRegionInfo->getDirectiveKind()); + CGF.EmitBranchThroughCleanup(CancelDest); + CGF.EmitBlock(ContBB, /*IsFinished=*/true); + } + } +} + +void CGOpenMPRuntime::emitCancelCall(CodeGenFunction &CGF, SourceLocation Loc, + const Expr *IfCond, + OpenMPDirectiveKind CancelRegion) { + if (!CGF.HaveInsertPoint()) + return; + // Build call kmp_int32 __kmpc_cancel(ident_t *loc, kmp_int32 global_tid, + // kmp_int32 cncl_kind); + if (auto *OMPRegionInfo = + dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) { + if (OMPRegionInfo->getDirectiveKind() == OMPD_single) + return; + auto &&ThenGen = [this, Loc, CancelRegion, + OMPRegionInfo](CodeGenFunction &CGF) { + llvm::Value *Args[] = { + emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), + CGF.Builder.getInt32(getCancellationKind(CancelRegion))}; + // Ignore return result until untied tasks are supported. + auto *Result = + CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_cancel), Args); + // if (__kmpc_cancel()) { + // __kmpc_cancel_barrier(); + // exit from construct; + // } + auto *ExitBB = CGF.createBasicBlock(".cancel.exit"); + auto *ContBB = CGF.createBasicBlock(".cancel.continue"); + auto *Cmp = CGF.Builder.CreateIsNotNull(Result); + CGF.Builder.CreateCondBr(Cmp, ExitBB, ContBB); + CGF.EmitBlock(ExitBB); + // __kmpc_cancel_barrier(); + emitBarrierCall(CGF, Loc, OMPD_unknown, /*EmitChecks=*/false); + // exit from construct; + auto CancelDest = + CGF.getOMPCancelDestination(OMPRegionInfo->getDirectiveKind()); + CGF.EmitBranchThroughCleanup(CancelDest); + CGF.EmitBlock(ContBB, /*IsFinished=*/true); + }; + if (IfCond) + emitOMPIfClause(CGF, IfCond, ThenGen, [](CodeGenFunction &) {}); + else + ThenGen(CGF); + } +} + +llvm::Value * +CGOpenMPRuntime::emitTargetOutlinedFunction(const OMPExecutableDirective &D, + const RegionCodeGenTy &CodeGen) { + const CapturedStmt &CS = *cast<CapturedStmt>(D.getAssociatedStmt()); + + CodeGenFunction CGF(CGM, true); + CGOpenMPTargetRegionInfo CGInfo(CS, CodeGen); + CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); + return CGF.GenerateOpenMPCapturedStmtFunction(CS); +} + +void CGOpenMPRuntime::emitTargetCall(CodeGenFunction &CGF, + const OMPExecutableDirective &D, + llvm::Value *OutlinedFn, + const Expr *IfCond, const Expr *Device, + ArrayRef<llvm::Value *> CapturedVars) { + if (!CGF.HaveInsertPoint()) + return; + /// \brief Values for bit flags used to specify the mapping type for + /// offloading. + enum OpenMPOffloadMappingFlags { + /// \brief Allocate memory on the device and move data from host to device. + OMP_MAP_TO = 0x01, + /// \brief Allocate memory on the device and move data from device to host. + OMP_MAP_FROM = 0x02, + /// \brief The element passed to the device is a pointer. + OMP_MAP_PTR = 0x20, + /// \brief Pass the element to the device by value. + OMP_MAP_BYCOPY = 0x80, + }; + + enum OpenMPOffloadingReservedDeviceIDs { + /// \brief Device ID if the device was not defined, runtime should get it + /// from environment variables in the spec. + OMP_DEVICEID_UNDEF = -1, + }; + + auto &Ctx = CGF.getContext(); + + // Fill up the arrays with the all the captured variables. + SmallVector<llvm::Value *, 16> BasePointers; + SmallVector<llvm::Value *, 16> Pointers; + SmallVector<llvm::Value *, 16> Sizes; + SmallVector<unsigned, 16> MapTypes; + + bool hasVLACaptures = false; + + const CapturedStmt &CS = *cast<CapturedStmt>(D.getAssociatedStmt()); + auto RI = CS.getCapturedRecordDecl()->field_begin(); + // auto II = CS.capture_init_begin(); + auto CV = CapturedVars.begin(); + for (CapturedStmt::const_capture_iterator CI = CS.capture_begin(), + CE = CS.capture_end(); + CI != CE; ++CI, ++RI, ++CV) { + StringRef Name; + QualType Ty; + llvm::Value *BasePointer; + llvm::Value *Pointer; + llvm::Value *Size; + unsigned MapType; + + // VLA sizes are passed to the outlined region by copy. + if (CI->capturesVariableArrayType()) { + BasePointer = Pointer = *CV; + Size = getTypeSize(CGF, RI->getType()); + // Copy to the device as an argument. No need to retrieve it. + MapType = OMP_MAP_BYCOPY; + hasVLACaptures = true; + } else if (CI->capturesThis()) { + BasePointer = Pointer = *CV; + const PointerType *PtrTy = cast<PointerType>(RI->getType().getTypePtr()); + Size = getTypeSize(CGF, PtrTy->getPointeeType()); + // Default map type. + MapType = OMP_MAP_TO | OMP_MAP_FROM; + } else if (CI->capturesVariableByCopy()) { + MapType = OMP_MAP_BYCOPY; + if (!RI->getType()->isAnyPointerType()) { + // If the field is not a pointer, we need to save the actual value and + // load it as a void pointer. + auto DstAddr = CGF.CreateMemTemp( + Ctx.getUIntPtrType(), + Twine(CI->getCapturedVar()->getName()) + ".casted"); + LValue DstLV = CGF.MakeAddrLValue(DstAddr, Ctx.getUIntPtrType()); + + auto *SrcAddrVal = CGF.EmitScalarConversion( + DstAddr.getPointer(), Ctx.getPointerType(Ctx.getUIntPtrType()), + Ctx.getPointerType(RI->getType()), SourceLocation()); + LValue SrcLV = + CGF.MakeNaturalAlignAddrLValue(SrcAddrVal, RI->getType()); + + // Store the value using the source type pointer. + CGF.EmitStoreThroughLValue(RValue::get(*CV), SrcLV); + + // Load the value using the destination type pointer. + BasePointer = Pointer = + CGF.EmitLoadOfLValue(DstLV, SourceLocation()).getScalarVal(); + } else { + MapType |= OMP_MAP_PTR; + BasePointer = Pointer = *CV; + } + Size = getTypeSize(CGF, RI->getType()); + } else { + assert(CI->capturesVariable() && "Expected captured reference."); + BasePointer = Pointer = *CV; + + const ReferenceType *PtrTy = + cast<ReferenceType>(RI->getType().getTypePtr()); + QualType ElementType = PtrTy->getPointeeType(); + Size = getTypeSize(CGF, ElementType); + // The default map type for a scalar/complex type is 'to' because by + // default the value doesn't have to be retrieved. For an aggregate type, + // the default is 'tofrom'. + MapType = ElementType->isAggregateType() ? (OMP_MAP_TO | OMP_MAP_FROM) + : OMP_MAP_TO; + if (ElementType->isAnyPointerType()) + MapType |= OMP_MAP_PTR; + } + + BasePointers.push_back(BasePointer); + Pointers.push_back(Pointer); + Sizes.push_back(Size); + MapTypes.push_back(MapType); + } + + // Keep track on whether the host function has to be executed. + auto OffloadErrorQType = + Ctx.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/true); + auto OffloadError = CGF.MakeAddrLValue( + CGF.CreateMemTemp(OffloadErrorQType, ".run_host_version"), + OffloadErrorQType); + CGF.EmitStoreOfScalar(llvm::Constant::getNullValue(CGM.Int32Ty), + OffloadError); + + // Fill up the pointer arrays and transfer execution to the device. + auto &&ThenGen = [this, &Ctx, &BasePointers, &Pointers, &Sizes, &MapTypes, + hasVLACaptures, Device, OffloadError, + OffloadErrorQType](CodeGenFunction &CGF) { + unsigned PointerNumVal = BasePointers.size(); + llvm::Value *PointerNum = CGF.Builder.getInt32(PointerNumVal); + llvm::Value *BasePointersArray; + llvm::Value *PointersArray; + llvm::Value *SizesArray; + llvm::Value *MapTypesArray; + + if (PointerNumVal) { + llvm::APInt PointerNumAP(32, PointerNumVal, /*isSigned=*/true); + QualType PointerArrayType = Ctx.getConstantArrayType( + Ctx.VoidPtrTy, PointerNumAP, ArrayType::Normal, + /*IndexTypeQuals=*/0); + + BasePointersArray = + CGF.CreateMemTemp(PointerArrayType, ".offload_baseptrs").getPointer(); + PointersArray = + CGF.CreateMemTemp(PointerArrayType, ".offload_ptrs").getPointer(); + + // If we don't have any VLA types, we can use a constant array for the map + // sizes, otherwise we need to fill up the arrays as we do for the + // pointers. + if (hasVLACaptures) { + QualType SizeArrayType = Ctx.getConstantArrayType( + Ctx.getSizeType(), PointerNumAP, ArrayType::Normal, + /*IndexTypeQuals=*/0); + SizesArray = + CGF.CreateMemTemp(SizeArrayType, ".offload_sizes").getPointer(); + } else { + // We expect all the sizes to be constant, so we collect them to create + // a constant array. + SmallVector<llvm::Constant *, 16> ConstSizes; + for (auto S : Sizes) + ConstSizes.push_back(cast<llvm::Constant>(S)); + + auto *SizesArrayInit = llvm::ConstantArray::get( + llvm::ArrayType::get(CGM.SizeTy, ConstSizes.size()), ConstSizes); + auto *SizesArrayGbl = new llvm::GlobalVariable( + CGM.getModule(), SizesArrayInit->getType(), + /*isConstant=*/true, llvm::GlobalValue::PrivateLinkage, + SizesArrayInit, ".offload_sizes"); + SizesArrayGbl->setUnnamedAddr(true); + SizesArray = SizesArrayGbl; + } + + // The map types are always constant so we don't need to generate code to + // fill arrays. Instead, we create an array constant. + llvm::Constant *MapTypesArrayInit = + llvm::ConstantDataArray::get(CGF.Builder.getContext(), MapTypes); + auto *MapTypesArrayGbl = new llvm::GlobalVariable( + CGM.getModule(), MapTypesArrayInit->getType(), + /*isConstant=*/true, llvm::GlobalValue::PrivateLinkage, + MapTypesArrayInit, ".offload_maptypes"); + MapTypesArrayGbl->setUnnamedAddr(true); + MapTypesArray = MapTypesArrayGbl; + + for (unsigned i = 0; i < PointerNumVal; ++i) { + + llvm::Value *BPVal = BasePointers[i]; + if (BPVal->getType()->isPointerTy()) + BPVal = CGF.Builder.CreateBitCast(BPVal, CGM.VoidPtrTy); + else { + assert(BPVal->getType()->isIntegerTy() && + "If not a pointer, the value type must be an integer."); + BPVal = CGF.Builder.CreateIntToPtr(BPVal, CGM.VoidPtrTy); + } + llvm::Value *BP = CGF.Builder.CreateConstInBoundsGEP2_32( + llvm::ArrayType::get(CGM.VoidPtrTy, PointerNumVal), + BasePointersArray, 0, i); + Address BPAddr(BP, Ctx.getTypeAlignInChars(Ctx.VoidPtrTy)); + CGF.Builder.CreateStore(BPVal, BPAddr); + + llvm::Value *PVal = Pointers[i]; + if (PVal->getType()->isPointerTy()) + PVal = CGF.Builder.CreateBitCast(PVal, CGM.VoidPtrTy); + else { + assert(PVal->getType()->isIntegerTy() && + "If not a pointer, the value type must be an integer."); + PVal = CGF.Builder.CreateIntToPtr(PVal, CGM.VoidPtrTy); + } + llvm::Value *P = CGF.Builder.CreateConstInBoundsGEP2_32( + llvm::ArrayType::get(CGM.VoidPtrTy, PointerNumVal), PointersArray, + 0, i); + Address PAddr(P, Ctx.getTypeAlignInChars(Ctx.VoidPtrTy)); + CGF.Builder.CreateStore(PVal, PAddr); + + if (hasVLACaptures) { + llvm::Value *S = CGF.Builder.CreateConstInBoundsGEP2_32( + llvm::ArrayType::get(CGM.SizeTy, PointerNumVal), SizesArray, + /*Idx0=*/0, + /*Idx1=*/i); + Address SAddr(S, Ctx.getTypeAlignInChars(Ctx.getSizeType())); + CGF.Builder.CreateStore(CGF.Builder.CreateIntCast( + Sizes[i], CGM.SizeTy, /*isSigned=*/true), + SAddr); + } + } + + BasePointersArray = CGF.Builder.CreateConstInBoundsGEP2_32( + llvm::ArrayType::get(CGM.VoidPtrTy, PointerNumVal), BasePointersArray, + /*Idx0=*/0, /*Idx1=*/0); + PointersArray = CGF.Builder.CreateConstInBoundsGEP2_32( + llvm::ArrayType::get(CGM.VoidPtrTy, PointerNumVal), PointersArray, + /*Idx0=*/0, + /*Idx1=*/0); + SizesArray = CGF.Builder.CreateConstInBoundsGEP2_32( + llvm::ArrayType::get(CGM.SizeTy, PointerNumVal), SizesArray, + /*Idx0=*/0, /*Idx1=*/0); + MapTypesArray = CGF.Builder.CreateConstInBoundsGEP2_32( + llvm::ArrayType::get(CGM.Int32Ty, PointerNumVal), MapTypesArray, + /*Idx0=*/0, + /*Idx1=*/0); + + } else { + BasePointersArray = llvm::ConstantPointerNull::get(CGM.VoidPtrPtrTy); + PointersArray = llvm::ConstantPointerNull::get(CGM.VoidPtrPtrTy); + SizesArray = llvm::ConstantPointerNull::get(CGM.SizeTy->getPointerTo()); + MapTypesArray = + llvm::ConstantPointerNull::get(CGM.Int32Ty->getPointerTo()); + } + + // On top of the arrays that were filled up, the target offloading call + // takes as arguments the device id as well as the host pointer. The host + // pointer is used by the runtime library to identify the current target + // region, so it only has to be unique and not necessarily point to + // anything. It could be the pointer to the outlined function that + // implements the target region, but we aren't using that so that the + // compiler doesn't need to keep that, and could therefore inline the host + // function if proven worthwhile during optimization. + + llvm::Value *HostPtr = new llvm::GlobalVariable( + CGM.getModule(), CGM.Int8Ty, /*isConstant=*/true, + llvm::GlobalValue::PrivateLinkage, + llvm::Constant::getNullValue(CGM.Int8Ty), ".offload_hstptr"); + + // Emit device ID if any. + llvm::Value *DeviceID; + if (Device) + DeviceID = CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(Device), + CGM.Int32Ty, /*isSigned=*/true); + else + DeviceID = CGF.Builder.getInt32(OMP_DEVICEID_UNDEF); + + llvm::Value *OffloadingArgs[] = { + DeviceID, HostPtr, PointerNum, BasePointersArray, + PointersArray, SizesArray, MapTypesArray}; + auto Return = CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__tgt_target), + OffloadingArgs); + + CGF.EmitStoreOfScalar(Return, OffloadError); + }; + + if (IfCond) { + // Notify that the host version must be executed. + auto &&ElseGen = [this, OffloadError, + OffloadErrorQType](CodeGenFunction &CGF) { + CGF.EmitStoreOfScalar(llvm::ConstantInt::get(CGM.Int32Ty, /*V=*/-1u), + OffloadError); + }; + emitOMPIfClause(CGF, IfCond, ThenGen, ElseGen); + } else { + CodeGenFunction::RunCleanupsScope Scope(CGF); + ThenGen(CGF); + } + + // Check the error code and execute the host version if required. + auto OffloadFailedBlock = CGF.createBasicBlock("omp_offload.failed"); + auto OffloadContBlock = CGF.createBasicBlock("omp_offload.cont"); + auto OffloadErrorVal = CGF.EmitLoadOfScalar(OffloadError, SourceLocation()); + auto Failed = CGF.Builder.CreateIsNotNull(OffloadErrorVal); + CGF.Builder.CreateCondBr(Failed, OffloadFailedBlock, OffloadContBlock); + + CGF.EmitBlock(OffloadFailedBlock); + CGF.Builder.CreateCall(OutlinedFn, BasePointers); + CGF.EmitBranch(OffloadContBlock); + + CGF.EmitBlock(OffloadContBlock, /*IsFinished=*/true); + return; +} |
