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author | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
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committer | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
commit | 6ffe9e53658409f212834330e13564e4952558f6 (patch) | |
tree | 85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/clang14/lib/CodeGen/CGOpenMPRuntimeGPU.h | |
parent | 726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff) | |
download | ydb-6ffe9e53658409f212834330e13564e4952558f6.tar.gz |
YQ Connector: support managed ClickHouse
Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.
Diffstat (limited to 'contrib/libs/clang14/lib/CodeGen/CGOpenMPRuntimeGPU.h')
-rw-r--r-- | contrib/libs/clang14/lib/CodeGen/CGOpenMPRuntimeGPU.h | 454 |
1 files changed, 454 insertions, 0 deletions
diff --git a/contrib/libs/clang14/lib/CodeGen/CGOpenMPRuntimeGPU.h b/contrib/libs/clang14/lib/CodeGen/CGOpenMPRuntimeGPU.h new file mode 100644 index 0000000000..1d30c50617 --- /dev/null +++ b/contrib/libs/clang14/lib/CodeGen/CGOpenMPRuntimeGPU.h @@ -0,0 +1,454 @@ +//===------ CGOpenMPRuntimeGPU.h - Interface to OpenMP GPU Runtimes ------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This provides a generalized class for OpenMP runtime code generation +// specialized by GPU targets NVPTX and AMDGCN. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H +#define LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H + +#include "CGOpenMPRuntime.h" +#include "CodeGenFunction.h" +#include "clang/AST/StmtOpenMP.h" + +namespace clang { +namespace CodeGen { + +class CGOpenMPRuntimeGPU : public CGOpenMPRuntime { +public: + /// Defines the execution mode. + enum ExecutionMode { + /// SPMD execution mode (all threads are worker threads). + EM_SPMD, + /// Non-SPMD execution mode (1 master thread, others are workers). + EM_NonSPMD, + /// Unknown execution mode (orphaned directive). + EM_Unknown, + }; +private: + /// Parallel outlined function work for workers to execute. + llvm::SmallVector<llvm::Function *, 16> Work; + + struct EntryFunctionState { + SourceLocation Loc; + }; + + ExecutionMode getExecutionMode() const; + + bool requiresFullRuntime() const { return RequiresFullRuntime; } + + /// Get barrier to synchronize all threads in a block. + void syncCTAThreads(CodeGenFunction &CGF); + + /// Helper for target directive initialization. + void emitKernelInit(CodeGenFunction &CGF, EntryFunctionState &EST, + bool IsSPMD); + + /// Helper for target directive finalization. + void emitKernelDeinit(CodeGenFunction &CGF, EntryFunctionState &EST, + bool IsSPMD); + + /// Helper for generic variables globalization prolog. + void emitGenericVarsProlog(CodeGenFunction &CGF, SourceLocation Loc, + bool WithSPMDCheck = false); + + /// Helper for generic variables globalization epilog. + void emitGenericVarsEpilog(CodeGenFunction &CGF, bool WithSPMDCheck = false); + + // + // Base class overrides. + // + + /// Creates offloading entry for the provided entry ID \a ID, + /// address \a Addr, size \a Size, and flags \a Flags. + void createOffloadEntry(llvm::Constant *ID, llvm::Constant *Addr, + uint64_t Size, int32_t Flags, + llvm::GlobalValue::LinkageTypes Linkage) override; + + /// Emit outlined function specialized for the Fork-Join + /// programming model for applicable target directives on the NVPTX device. + /// \param D Directive to emit. + /// \param ParentName Name of the function that encloses the target region. + /// \param OutlinedFn Outlined function value to be defined by this call. + /// \param OutlinedFnID Outlined function ID value to be defined by this call. + /// \param IsOffloadEntry True if the outlined function is an offload entry. + /// An outlined function may not be an entry if, e.g. the if clause always + /// evaluates to false. + void emitNonSPMDKernel(const OMPExecutableDirective &D, StringRef ParentName, + llvm::Function *&OutlinedFn, + llvm::Constant *&OutlinedFnID, bool IsOffloadEntry, + const RegionCodeGenTy &CodeGen); + + /// Emit outlined function specialized for the Single Program + /// Multiple Data programming model for applicable target directives on the + /// NVPTX device. + /// \param D Directive to emit. + /// \param ParentName Name of the function that encloses the target region. + /// \param OutlinedFn Outlined function value to be defined by this call. + /// \param OutlinedFnID Outlined function ID value to be defined by this call. + /// \param IsOffloadEntry True if the outlined function is an offload entry. + /// \param CodeGen Object containing the target statements. + /// An outlined function may not be an entry if, e.g. the if clause always + /// evaluates to false. + void emitSPMDKernel(const OMPExecutableDirective &D, StringRef ParentName, + llvm::Function *&OutlinedFn, + llvm::Constant *&OutlinedFnID, bool IsOffloadEntry, + const RegionCodeGenTy &CodeGen); + + /// Emit outlined function for 'target' directive on the NVPTX + /// device. + /// \param D Directive to emit. + /// \param ParentName Name of the function that encloses the target region. + /// \param OutlinedFn Outlined function value to be defined by this call. + /// \param OutlinedFnID Outlined function ID value to be defined by this call. + /// \param IsOffloadEntry True if the outlined function is an offload entry. + /// An outlined function may not be an entry if, e.g. the if clause always + /// evaluates to false. + void emitTargetOutlinedFunction(const OMPExecutableDirective &D, + StringRef ParentName, + llvm::Function *&OutlinedFn, + llvm::Constant *&OutlinedFnID, + bool IsOffloadEntry, + const RegionCodeGenTy &CodeGen) override; + + /// Emits code for parallel or serial call of the \a OutlinedFn with + /// variables captured in a record which address is stored in \a + /// CapturedStruct. + /// This call is for the Non-SPMD Execution Mode. + /// \param OutlinedFn Outlined function to be run in parallel threads. Type of + /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). + /// \param CapturedVars A pointer to the record with the references to + /// variables used in \a OutlinedFn function. + /// \param IfCond Condition in the associated 'if' clause, if it was + /// specified, nullptr otherwise. + void emitNonSPMDParallelCall(CodeGenFunction &CGF, SourceLocation Loc, + llvm::Value *OutlinedFn, + ArrayRef<llvm::Value *> CapturedVars, + const Expr *IfCond); + + /// Emits code for parallel or serial call of the \a OutlinedFn with + /// variables captured in a record which address is stored in \a + /// CapturedStruct. + /// This call is for a parallel directive within an SPMD target directive. + /// \param OutlinedFn Outlined function to be run in parallel threads. Type of + /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). + /// \param CapturedVars A pointer to the record with the references to + /// variables used in \a OutlinedFn function. + /// \param IfCond Condition in the associated 'if' clause, if it was + /// specified, nullptr otherwise. + /// + void emitSPMDParallelCall(CodeGenFunction &CGF, SourceLocation Loc, + llvm::Function *OutlinedFn, + ArrayRef<llvm::Value *> CapturedVars, + const Expr *IfCond); + +protected: + /// Get the function name of an outlined region. + // The name can be customized depending on the target. + // + StringRef getOutlinedHelperName() const override { + return "__omp_outlined__"; + } + + /// Check if the default location must be constant. + /// Constant for NVPTX for better optimization. + bool isDefaultLocationConstant() const override { return true; } + + /// Returns additional flags that can be stored in reserved_2 field of the + /// default location. + /// For NVPTX target contains data about SPMD/Non-SPMD execution mode + + /// Full/Lightweight runtime mode. Used for better optimization. + unsigned getDefaultLocationReserved2Flags() const override; + +public: + explicit CGOpenMPRuntimeGPU(CodeGenModule &CGM); + void clear() override; + + /// Declare generalized virtual functions which need to be defined + /// by all specializations of OpenMPGPURuntime Targets like AMDGCN + /// and NVPTX. + + /// Get the GPU warp size. + llvm::Value *getGPUWarpSize(CodeGenFunction &CGF); + + /// Get the id of the current thread on the GPU. + llvm::Value *getGPUThreadID(CodeGenFunction &CGF); + + /// Get the maximum number of threads in a block of the GPU. + llvm::Value *getGPUNumThreads(CodeGenFunction &CGF); + + /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 + /// global_tid, int proc_bind) to generate code for 'proc_bind' clause. + virtual void emitProcBindClause(CodeGenFunction &CGF, + llvm::omp::ProcBindKind ProcBind, + SourceLocation Loc) override; + + /// Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32 + /// global_tid, kmp_int32 num_threads) to generate code for 'num_threads' + /// clause. + /// \param NumThreads An integer value of threads. + virtual void emitNumThreadsClause(CodeGenFunction &CGF, + llvm::Value *NumThreads, + SourceLocation Loc) override; + + /// This function ought to emit, in the general case, a call to + // the openmp runtime kmpc_push_num_teams. In NVPTX backend it is not needed + // as these numbers are obtained through the PTX grid and block configuration. + /// \param NumTeams An integer expression of teams. + /// \param ThreadLimit An integer expression of threads. + void emitNumTeamsClause(CodeGenFunction &CGF, const Expr *NumTeams, + const Expr *ThreadLimit, SourceLocation Loc) override; + + /// Emits inlined function for the specified OpenMP parallel + // directive. + /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID, + /// kmp_int32 BoundID, struct context_vars*). + /// \param D OpenMP directive. + /// \param ThreadIDVar Variable for thread id in the current OpenMP region. + /// \param InnermostKind Kind of innermost directive (for simple directives it + /// is a directive itself, for combined - its innermost directive). + /// \param CodeGen Code generation sequence for the \a D directive. + llvm::Function * + emitParallelOutlinedFunction(const OMPExecutableDirective &D, + const VarDecl *ThreadIDVar, + OpenMPDirectiveKind InnermostKind, + const RegionCodeGenTy &CodeGen) override; + + /// Emits inlined function for the specified OpenMP teams + // directive. + /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID, + /// kmp_int32 BoundID, struct context_vars*). + /// \param D OpenMP directive. + /// \param ThreadIDVar Variable for thread id in the current OpenMP region. + /// \param InnermostKind Kind of innermost directive (for simple directives it + /// is a directive itself, for combined - its innermost directive). + /// \param CodeGen Code generation sequence for the \a D directive. + llvm::Function * + emitTeamsOutlinedFunction(const OMPExecutableDirective &D, + const VarDecl *ThreadIDVar, + OpenMPDirectiveKind InnermostKind, + const RegionCodeGenTy &CodeGen) override; + + /// Emits code for teams call of the \a OutlinedFn with + /// variables captured in a record which address is stored in \a + /// CapturedStruct. + /// \param OutlinedFn Outlined function to be run by team masters. Type of + /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). + /// \param CapturedVars A pointer to the record with the references to + /// variables used in \a OutlinedFn function. + /// + void emitTeamsCall(CodeGenFunction &CGF, const OMPExecutableDirective &D, + SourceLocation Loc, llvm::Function *OutlinedFn, + ArrayRef<llvm::Value *> CapturedVars) override; + + /// Emits code for parallel or serial call of the \a OutlinedFn with + /// variables captured in a record which address is stored in \a + /// CapturedStruct. + /// \param OutlinedFn Outlined function to be run in parallel threads. Type of + /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). + /// \param CapturedVars A pointer to the record with the references to + /// variables used in \a OutlinedFn function. + /// \param IfCond Condition in the associated 'if' clause, if it was + /// specified, nullptr otherwise. + /// \param NumThreads The value corresponding to the num_threads clause, if + /// any, + /// or nullptr. + void emitParallelCall(CodeGenFunction &CGF, SourceLocation Loc, + llvm::Function *OutlinedFn, + ArrayRef<llvm::Value *> CapturedVars, + const Expr *IfCond, llvm::Value *NumThreads) override; + + /// Emit an implicit/explicit barrier for OpenMP threads. + /// \param Kind Directive for which this implicit barrier call must be + /// generated. Must be OMPD_barrier for explicit barrier generation. + /// \param EmitChecks true if need to emit checks for cancellation barriers. + /// \param ForceSimpleCall true simple barrier call must be emitted, false if + /// runtime class decides which one to emit (simple or with cancellation + /// checks). + /// + void emitBarrierCall(CodeGenFunction &CGF, SourceLocation Loc, + OpenMPDirectiveKind Kind, bool EmitChecks = true, + bool ForceSimpleCall = false) override; + + /// Emits a critical region. + /// \param CriticalName Name of the critical region. + /// \param CriticalOpGen Generator for the statement associated with the given + /// critical region. + /// \param Hint Value of the 'hint' clause (optional). + void emitCriticalRegion(CodeGenFunction &CGF, StringRef CriticalName, + const RegionCodeGenTy &CriticalOpGen, + SourceLocation Loc, + const Expr *Hint = nullptr) override; + + /// Emit a code for reduction clause. + /// + /// \param Privates List of private copies for original reduction arguments. + /// \param LHSExprs List of LHS in \a ReductionOps reduction operations. + /// \param RHSExprs List of RHS in \a ReductionOps reduction operations. + /// \param ReductionOps List of reduction operations in form 'LHS binop RHS' + /// or 'operator binop(LHS, RHS)'. + /// \param Options List of options for reduction codegen: + /// WithNowait true if parent directive has also nowait clause, false + /// otherwise. + /// SimpleReduction Emit reduction operation only. Used for omp simd + /// directive on the host. + /// ReductionKind The kind of reduction to perform. + virtual void emitReduction(CodeGenFunction &CGF, SourceLocation Loc, + ArrayRef<const Expr *> Privates, + ArrayRef<const Expr *> LHSExprs, + ArrayRef<const Expr *> RHSExprs, + ArrayRef<const Expr *> ReductionOps, + ReductionOptionsTy Options) override; + + /// Returns specified OpenMP runtime function for the current OpenMP + /// implementation. Specialized for the NVPTX device. + /// \param Function OpenMP runtime function. + /// \return Specified function. + llvm::FunctionCallee createNVPTXRuntimeFunction(unsigned Function); + + /// Translates the native parameter of outlined function if this is required + /// for target. + /// \param FD Field decl from captured record for the parameter. + /// \param NativeParam Parameter itself. + const VarDecl *translateParameter(const FieldDecl *FD, + const VarDecl *NativeParam) const override; + + /// Gets the address of the native argument basing on the address of the + /// target-specific parameter. + /// \param NativeParam Parameter itself. + /// \param TargetParam Corresponding target-specific parameter. + Address getParameterAddress(CodeGenFunction &CGF, const VarDecl *NativeParam, + const VarDecl *TargetParam) const override; + + /// Emits call of the outlined function with the provided arguments, + /// translating these arguments to correct target-specific arguments. + void emitOutlinedFunctionCall( + CodeGenFunction &CGF, SourceLocation Loc, llvm::FunctionCallee OutlinedFn, + ArrayRef<llvm::Value *> Args = llvm::None) const override; + + /// Emits OpenMP-specific function prolog. + /// Required for device constructs. + void emitFunctionProlog(CodeGenFunction &CGF, const Decl *D) override; + + /// Gets the OpenMP-specific address of the local variable. + Address getAddressOfLocalVariable(CodeGenFunction &CGF, + const VarDecl *VD) override; + + /// Target codegen is specialized based on two data-sharing modes: CUDA, in + /// which the local variables are actually global threadlocal, and Generic, in + /// which the local variables are placed in global memory if they may escape + /// their declaration context. + enum DataSharingMode { + /// CUDA data sharing mode. + CUDA, + /// Generic data-sharing mode. + Generic, + }; + + /// Cleans up references to the objects in finished function. + /// + void functionFinished(CodeGenFunction &CGF) override; + + /// Choose a default value for the dist_schedule clause. + void getDefaultDistScheduleAndChunk(CodeGenFunction &CGF, + const OMPLoopDirective &S, OpenMPDistScheduleClauseKind &ScheduleKind, + llvm::Value *&Chunk) const override; + + /// Choose a default value for the schedule clause. + void getDefaultScheduleAndChunk(CodeGenFunction &CGF, + const OMPLoopDirective &S, OpenMPScheduleClauseKind &ScheduleKind, + const Expr *&ChunkExpr) const override; + + /// Adjust some parameters for the target-based directives, like addresses of + /// the variables captured by reference in lambdas. + void adjustTargetSpecificDataForLambdas( + CodeGenFunction &CGF, const OMPExecutableDirective &D) const override; + + /// Perform check on requires decl to ensure that target architecture + /// supports unified addressing + void processRequiresDirective(const OMPRequiresDecl *D) override; + + /// Checks if the variable has associated OMPAllocateDeclAttr attribute with + /// the predefined allocator and translates it into the corresponding address + /// space. + bool hasAllocateAttributeForGlobalVar(const VarDecl *VD, LangAS &AS) override; + +private: + /// Track the execution mode when codegening directives within a target + /// region. The appropriate mode (SPMD/NON-SPMD) is set on entry to the + /// target region and used by containing directives such as 'parallel' + /// to emit optimized code. + ExecutionMode CurrentExecutionMode = EM_Unknown; + + /// Check if the full runtime is required (default - yes). + bool RequiresFullRuntime = true; + + /// true if we're emitting the code for the target region and next parallel + /// region is L0 for sure. + bool IsInTargetMasterThreadRegion = false; + /// true if currently emitting code for target/teams/distribute region, false + /// - otherwise. + bool IsInTTDRegion = false; + /// true if we're definitely in the parallel region. + bool IsInParallelRegion = false; + + /// Map between an outlined function and its wrapper. + llvm::DenseMap<llvm::Function *, llvm::Function *> WrapperFunctionsMap; + + /// Emit function which wraps the outline parallel region + /// and controls the parameters which are passed to this function. + /// The wrapper ensures that the outlined function is called + /// with the correct arguments when data is shared. + llvm::Function *createParallelDataSharingWrapper( + llvm::Function *OutlinedParallelFn, const OMPExecutableDirective &D); + + /// The data for the single globalized variable. + struct MappedVarData { + /// Corresponding field in the global record. + llvm::Value *GlobalizedVal = nullptr; + /// Corresponding address. + Address PrivateAddr = Address::invalid(); + }; + /// The map of local variables to their addresses in the global memory. + using DeclToAddrMapTy = llvm::MapVector<const Decl *, MappedVarData>; + /// Set of the parameters passed by value escaping OpenMP context. + using EscapedParamsTy = llvm::SmallPtrSet<const Decl *, 4>; + struct FunctionData { + DeclToAddrMapTy LocalVarData; + llvm::Optional<DeclToAddrMapTy> SecondaryLocalVarData = llvm::None; + EscapedParamsTy EscapedParameters; + llvm::SmallVector<const ValueDecl*, 4> EscapedVariableLengthDecls; + llvm::SmallVector<std::pair<llvm::Value *, llvm::Value *>, 4> + EscapedVariableLengthDeclsAddrs; + llvm::Value *IsInSPMDModeFlag = nullptr; + std::unique_ptr<CodeGenFunction::OMPMapVars> MappedParams; + }; + /// Maps the function to the list of the globalized variables with their + /// addresses. + llvm::SmallDenseMap<llvm::Function *, FunctionData> FunctionGlobalizedDecls; + llvm::GlobalVariable *KernelTeamsReductionPtr = nullptr; + /// List of the records with the list of fields for the reductions across the + /// teams. Used to build the intermediate buffer for the fast teams + /// reductions. + /// All the records are gathered into a union `union.type` is created. + llvm::SmallVector<const RecordDecl *, 4> TeamsReductions; + /// Shared pointer for the global memory in the global memory buffer used for + /// the given kernel. + llvm::GlobalVariable *KernelStaticGlobalized = nullptr; + /// Pair of the Non-SPMD team and all reductions variables in this team + /// region. + std::pair<const Decl *, llvm::SmallVector<const ValueDecl *, 4>> + TeamAndReductions; +}; + +} // CodeGen namespace. +} // clang namespace. + +#endif // LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H |