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CGOpenMPRuntimeGPU.h
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1//===------ CGOpenMPRuntimeGPU.h - Interface to OpenMP GPU Runtimes ------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This provides a generalized class for OpenMP runtime code generation
10// specialized by GPU targets NVPTX and AMDGCN.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H
15#define LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H
16
17#include "CGOpenMPRuntime.h"
18#include "CodeGenFunction.h"
20
21namespace clang {
22namespace CodeGen {
23
25public:
26 /// Defines the execution mode.
28 /// SPMD execution mode (all threads are worker threads).
30 /// Non-SPMD execution mode (1 master thread, others are workers).
32 /// Unknown execution mode (orphaned directive).
34 };
35
36 /// Target codegen is specialized based on two data-sharing modes: CUDA, in
37 /// which the local variables are actually global threadlocal, and Generic, in
38 /// which the local variables are placed in global memory if they may escape
39 /// their declaration context.
41 /// CUDA data sharing mode.
43 /// Generic data-sharing mode.
45 };
46
47private:
48 /// Parallel outlined function work for workers to execute.
50
51 struct EntryFunctionState {
53 };
54
55 ExecutionMode getExecutionMode() const;
56
57 DataSharingMode getDataSharingMode() const;
58
59 /// Get barrier to synchronize all threads in a block.
60 void syncCTAThreads(CodeGenFunction &CGF);
61
62 /// Helper for target directive initialization.
63 void emitKernelInit(const OMPExecutableDirective &D, CodeGenFunction &CGF,
64 EntryFunctionState &EST, bool IsSPMD);
65
66 /// Helper for target directive finalization.
67 void emitKernelDeinit(CodeGenFunction &CGF, EntryFunctionState &EST,
68 bool IsSPMD);
69
70 /// Helper for generic variables globalization prolog.
71 void emitGenericVarsProlog(CodeGenFunction &CGF, SourceLocation Loc);
72
73 /// Helper for generic variables globalization epilog.
74 void emitGenericVarsEpilog(CodeGenFunction &CGF);
75
76 //
77 // Base class overrides.
78 //
79
80 /// Emit outlined function specialized for the Fork-Join
81 /// programming model for applicable target directives on the NVPTX device.
82 /// \param D Directive to emit.
83 /// \param ParentName Name of the function that encloses the target region.
84 /// \param OutlinedFn Outlined function value to be defined by this call.
85 /// \param OutlinedFnID Outlined function ID value to be defined by this call.
86 /// \param IsOffloadEntry True if the outlined function is an offload entry.
87 /// An outlined function may not be an entry if, e.g. the if clause always
88 /// evaluates to false.
89 void emitNonSPMDKernel(const OMPExecutableDirective &D, StringRef ParentName,
90 llvm::Function *&OutlinedFn,
91 llvm::Constant *&OutlinedFnID, bool IsOffloadEntry,
92 const RegionCodeGenTy &CodeGen);
93
94 /// Emit outlined function specialized for the Single Program
95 /// Multiple Data programming model for applicable target directives on the
96 /// NVPTX device.
97 /// \param D Directive to emit.
98 /// \param ParentName Name of the function that encloses the target region.
99 /// \param OutlinedFn Outlined function value to be defined by this call.
100 /// \param OutlinedFnID Outlined function ID value to be defined by this call.
101 /// \param IsOffloadEntry True if the outlined function is an offload entry.
102 /// \param CodeGen Object containing the target statements.
103 /// An outlined function may not be an entry if, e.g. the if clause always
104 /// evaluates to false.
105 void emitSPMDKernel(const OMPExecutableDirective &D, StringRef ParentName,
106 llvm::Function *&OutlinedFn,
107 llvm::Constant *&OutlinedFnID, bool IsOffloadEntry,
108 const RegionCodeGenTy &CodeGen);
109
110 /// Emit outlined function for 'target' directive on the NVPTX
111 /// device.
112 /// \param D Directive to emit.
113 /// \param ParentName Name of the function that encloses the target region.
114 /// \param OutlinedFn Outlined function value to be defined by this call.
115 /// \param OutlinedFnID Outlined function ID value to be defined by this call.
116 /// \param IsOffloadEntry True if the outlined function is an offload entry.
117 /// An outlined function may not be an entry if, e.g. the if clause always
118 /// evaluates to false.
119 void emitTargetOutlinedFunction(const OMPExecutableDirective &D,
120 StringRef ParentName,
121 llvm::Function *&OutlinedFn,
122 llvm::Constant *&OutlinedFnID,
123 bool IsOffloadEntry,
124 const RegionCodeGenTy &CodeGen) override;
125
126protected:
127 /// Check if the default location must be constant.
128 /// Constant for NVPTX for better optimization.
129 bool isDefaultLocationConstant() const override { return true; }
130
131public:
133
134 bool isGPU() const override { return true; };
135
136 /// Declare generalized virtual functions which need to be defined
137 /// by all specializations of OpenMPGPURuntime Targets like AMDGCN
138 /// and NVPTX.
139
140 /// Check if the variable length declaration is delayed:
142 const VarDecl *VD) const override;
143
144 /// Get call to __kmpc_alloc_shared
145 std::pair<llvm::Value *, llvm::Value *>
146 getKmpcAllocShared(CodeGenFunction &CGF, const VarDecl *VD) override;
147
148 /// Get call to __kmpc_free_shared
150 CodeGenFunction &CGF,
151 const std::pair<llvm::Value *, llvm::Value *> &AddrSizePair) override;
152
153 /// Get the id of the current thread on the GPU.
154 llvm::Value *getGPUThreadID(CodeGenFunction &CGF);
155
156 /// Get the maximum number of threads in a block of the GPU.
157 llvm::Value *getGPUNumThreads(CodeGenFunction &CGF);
158
159 /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32
160 /// global_tid, int proc_bind) to generate code for 'proc_bind' clause.
162 llvm::omp::ProcBindKind ProcBind,
163 SourceLocation Loc) override;
164
165 /// Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32
166 /// global_tid, kmp_int32 num_threads) to generate code for 'num_threads'
167 /// clause.
169 CodeGenFunction &CGF, llvm::Value *NumThreads, SourceLocation Loc,
171 OpenMPSeverityClauseKind Severity = OMPC_SEVERITY_fatal,
172 const Expr *Message = nullptr) override;
173
174 /// This function ought to emit, in the general case, a call to
175 // the openmp runtime kmpc_push_num_teams. In NVPTX backend it is not needed
176 // as these numbers are obtained through the PTX grid and block configuration.
177 /// \param NumTeams An integer expression of teams.
178 /// \param ThreadLimit An integer expression of threads.
179 void emitNumTeamsClause(CodeGenFunction &CGF, const Expr *NumTeams,
180 const Expr *ThreadLimit, SourceLocation Loc) override;
181
182 /// Emits inlined function for the specified OpenMP parallel
183 // directive.
184 /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID,
185 /// kmp_int32 BoundID, struct context_vars*).
186 /// \param CGF Reference to current CodeGenFunction.
187 /// \param D OpenMP directive.
188 /// \param ThreadIDVar Variable for thread id in the current OpenMP region.
189 /// \param InnermostKind Kind of innermost directive (for simple directives it
190 /// is a directive itself, for combined - its innermost directive).
191 /// \param CodeGen Code generation sequence for the \a D directive.
192 llvm::Function *emitParallelOutlinedFunction(
194 const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind,
195 const RegionCodeGenTy &CodeGen) override;
196
197 /// Emits inlined function for the specified OpenMP teams
198 // directive.
199 /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID,
200 /// kmp_int32 BoundID, struct context_vars*).
201 /// \param CGF Reference to current CodeGenFunction.
202 /// \param D OpenMP directive.
203 /// \param ThreadIDVar Variable for thread id in the current OpenMP region.
204 /// \param InnermostKind Kind of innermost directive (for simple directives it
205 /// is a directive itself, for combined - its innermost directive).
206 /// \param CodeGen Code generation sequence for the \a D directive.
207 llvm::Function *emitTeamsOutlinedFunction(
209 const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind,
210 const RegionCodeGenTy &CodeGen) override;
211
212 /// Emits code for teams call of the \a OutlinedFn with
213 /// variables captured in a record which address is stored in \a
214 /// CapturedStruct.
215 /// \param OutlinedFn Outlined function to be run by team masters. Type of
216 /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*).
217 /// \param CapturedVars A pointer to the record with the references to
218 /// variables used in \a OutlinedFn function.
219 ///
221 SourceLocation Loc, llvm::Function *OutlinedFn,
222 ArrayRef<llvm::Value *> CapturedVars) override;
223
224 /// Emits code for parallel or serial call of the \a OutlinedFn with
225 /// variables captured in a record which address is stored in \a
226 /// CapturedStruct.
227 /// \param OutlinedFn Outlined function to be run in parallel threads. Type of
228 /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*).
229 /// \param CapturedVars A pointer to the record with the references to
230 /// variables used in \a OutlinedFn function.
231 /// \param IfCond Condition in the associated 'if' clause, if it was
232 /// specified, nullptr otherwise.
233 /// \param NumThreads The value corresponding to the num_threads clause, if
234 /// any, or nullptr.
235 /// \param NumThreadsModifier The modifier of the num_threads clause, if
236 /// any, ignored otherwise. Currently unused on the device.
237 /// \param Severity The severity corresponding to the num_threads clause, if
238 /// any, ignored otherwise. Currently unused on the device.
239 /// \param Message The message string corresponding to the num_threads clause,
240 /// if any, or nullptr. Currently unused on the device.
242 llvm::Function *OutlinedFn,
243 ArrayRef<llvm::Value *> CapturedVars,
244 const Expr *IfCond, llvm::Value *NumThreads,
245 OpenMPNumThreadsClauseModifier NumThreadsModifier =
247 OpenMPSeverityClauseKind Severity = OMPC_SEVERITY_fatal,
248 const Expr *Message = nullptr) override;
249
250 /// Emit an implicit/explicit barrier for OpenMP threads.
251 /// \param Kind Directive for which this implicit barrier call must be
252 /// generated. Must be OMPD_barrier for explicit barrier generation.
253 /// \param EmitChecks true if need to emit checks for cancellation barriers.
254 /// \param ForceSimpleCall true simple barrier call must be emitted, false if
255 /// runtime class decides which one to emit (simple or with cancellation
256 /// checks).
257 ///
259 OpenMPDirectiveKind Kind, bool EmitChecks = true,
260 bool ForceSimpleCall = false) override;
261
262 /// Emits a critical region.
263 /// \param CriticalName Name of the critical region.
264 /// \param CriticalOpGen Generator for the statement associated with the given
265 /// critical region.
266 /// \param Hint Value of the 'hint' clause (optional).
267 void emitCriticalRegion(CodeGenFunction &CGF, StringRef CriticalName,
268 const RegionCodeGenTy &CriticalOpGen,
269 SourceLocation Loc,
270 const Expr *Hint = nullptr) override;
271
272 /// Emit a code for reduction clause.
273 ///
274 /// \param Privates List of private copies for original reduction arguments.
275 /// \param LHSExprs List of LHS in \a ReductionOps reduction operations.
276 /// \param RHSExprs List of RHS in \a ReductionOps reduction operations.
277 /// \param ReductionOps List of reduction operations in form 'LHS binop RHS'
278 /// or 'operator binop(LHS, RHS)'.
279 /// \param Options List of options for reduction codegen:
280 /// WithNowait true if parent directive has also nowait clause, false
281 /// otherwise.
282 /// SimpleReduction Emit reduction operation only. Used for omp simd
283 /// directive on the host.
284 /// ReductionKind The kind of reduction to perform.
286 ArrayRef<const Expr *> Privates,
287 ArrayRef<const Expr *> LHSExprs,
288 ArrayRef<const Expr *> RHSExprs,
289 ArrayRef<const Expr *> ReductionOps,
290 ReductionOptionsTy Options) override;
291
292 /// Translates the native parameter of outlined function if this is required
293 /// for target.
294 /// \param FD Field decl from captured record for the parameter.
295 /// \param NativeParam Parameter itself.
296 const VarDecl *translateParameter(const FieldDecl *FD,
297 const VarDecl *NativeParam) const override;
298
299 /// Gets the address of the native argument basing on the address of the
300 /// target-specific parameter.
301 /// \param NativeParam Parameter itself.
302 /// \param TargetParam Corresponding target-specific parameter.
303 Address getParameterAddress(CodeGenFunction &CGF, const VarDecl *NativeParam,
304 const VarDecl *TargetParam) const override;
305
306 /// Emits call of the outlined function with the provided arguments,
307 /// translating these arguments to correct target-specific arguments.
308 void
310 llvm::FunctionCallee OutlinedFn,
311 ArrayRef<llvm::Value *> Args = {}) const override;
312
313 /// Emits OpenMP-specific function prolog.
314 /// Required for device constructs.
315 void emitFunctionProlog(CodeGenFunction &CGF, const Decl *D) override;
316
317 /// Gets the OpenMP-specific address of the local variable.
318 Address getAddressOfLocalVariable(CodeGenFunction &CGF,
319 const VarDecl *VD) override;
320
321 /// Cleans up references to the objects in finished function.
322 ///
323 void functionFinished(CodeGenFunction &CGF) override;
324
325 /// Choose a default value for the dist_schedule clause.
326 void getDefaultDistScheduleAndChunk(CodeGenFunction &CGF,
327 const OMPLoopDirective &S, OpenMPDistScheduleClauseKind &ScheduleKind,
328 llvm::Value *&Chunk) const override;
329
330 /// Choose a default value for the schedule clause.
331 void getDefaultScheduleAndChunk(CodeGenFunction &CGF,
332 const OMPLoopDirective &S, OpenMPScheduleClauseKind &ScheduleKind,
333 const Expr *&ChunkExpr) const override;
334
335 /// Adjust some parameters for the target-based directives, like addresses of
336 /// the variables captured by reference in lambdas.
338 CodeGenFunction &CGF, const OMPExecutableDirective &D) const override;
339
340 /// Perform check on requires decl to ensure that target architecture
341 /// supports unified addressing
342 void processRequiresDirective(const OMPRequiresDecl *D) override;
343
344 /// Checks if the variable has associated OMPAllocateDeclAttr attribute with
345 /// the predefined allocator and translates it into the corresponding address
346 /// space.
347 bool hasAllocateAttributeForGlobalVar(const VarDecl *VD, LangAS &AS) override;
348
349private:
350 /// Track the execution mode when codegening directives within a target
351 /// region. The appropriate mode (SPMD/NON-SPMD) is set on entry to the
352 /// target region and used by containing directives such as 'parallel'
353 /// to emit optimized code.
354 ExecutionMode CurrentExecutionMode = EM_Unknown;
355
356 /// Track the data sharing mode when codegening directives within a target
357 /// region.
358 DataSharingMode CurrentDataSharingMode = DataSharingMode::DS_Generic;
359
360 /// true if currently emitting code for target/teams/distribute region, false
361 /// - otherwise.
362 bool IsInTTDRegion = false;
363
364 /// Map between an outlined function and its wrapper.
365 llvm::DenseMap<llvm::Function *, llvm::Function *> WrapperFunctionsMap;
366
367 /// Emit function which wraps the outline parallel region
368 /// and controls the parameters which are passed to this function.
369 /// The wrapper ensures that the outlined function is called
370 /// with the correct arguments when data is shared.
371 llvm::Function *createParallelDataSharingWrapper(
372 llvm::Function *OutlinedParallelFn, const OMPExecutableDirective &D);
373
374 /// The data for the single globalized variable.
375 struct MappedVarData {
376 /// Corresponding field in the global record.
377 llvm::Value *GlobalizedVal = nullptr;
378 /// Corresponding address.
379 Address PrivateAddr = Address::invalid();
380 };
381 /// The map of local variables to their addresses in the global memory.
382 using DeclToAddrMapTy = llvm::MapVector<const Decl *, MappedVarData>;
383 /// Set of the parameters passed by value escaping OpenMP context.
384 using EscapedParamsTy = llvm::SmallPtrSet<const Decl *, 4>;
385 struct FunctionData {
386 DeclToAddrMapTy LocalVarData;
387 EscapedParamsTy EscapedParameters;
388 llvm::SmallVector<const ValueDecl*, 4> EscapedVariableLengthDecls;
389 llvm::SmallVector<const ValueDecl *, 4> DelayedVariableLengthDecls;
391 EscapedVariableLengthDeclsAddrs;
392 std::unique_ptr<CodeGenFunction::OMPMapVars> MappedParams;
393 };
394 /// Maps the function to the list of the globalized variables with their
395 /// addresses.
396 llvm::SmallDenseMap<llvm::Function *, FunctionData> FunctionGlobalizedDecls;
397 /// List of the records with the list of fields for the reductions across the
398 /// teams. Used to build the intermediate buffer for the fast teams
399 /// reductions.
400 /// All the records are gathered into a union `union.type` is created.
401 llvm::SmallVector<const RecordDecl *, 4> TeamsReductions;
402 /// Pair of the Non-SPMD team and all reductions variables in this team
403 /// region.
404 std::pair<const Decl *, llvm::SmallVector<const ValueDecl *, 4>>
405 TeamAndReductions;
406};
407
408} // CodeGen namespace.
409} // clang namespace.
410
411#endif // LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H
This file defines OpenMP AST classes for executable directives and clauses.
Like RawAddress, an abstract representation of an aligned address, but the pointer contained in this ...
Definition Address.h:128
static Address invalid()
Definition Address.h:176
llvm::Function * emitTeamsOutlinedFunction(CodeGenFunction &CGF, const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) override
Emits inlined function for the specified OpenMP teams.
void emitProcBindClause(CodeGenFunction &CGF, llvm::omp::ProcBindKind ProcBind, SourceLocation Loc) override
Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32global_tid, int proc_bind) to generate...
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
Emit a code for reduction clause.
DataSharingMode
Target codegen is specialized based on two data-sharing modes: CUDA, in which the local variables are...
@ DS_Generic
Generic data-sharing mode.
void getDefaultDistScheduleAndChunk(CodeGenFunction &CGF, const OMPLoopDirective &S, OpenMPDistScheduleClauseKind &ScheduleKind, llvm::Value *&Chunk) const override
Choose a default value for the dist_schedule clause.
Address getAddressOfLocalVariable(CodeGenFunction &CGF, const VarDecl *VD) override
Gets the OpenMP-specific address of the local variable.
void emitFunctionProlog(CodeGenFunction &CGF, const Decl *D) override
Emits OpenMP-specific function prolog.
bool isDefaultLocationConstant() const override
Check if the default location must be constant.
void getDefaultScheduleAndChunk(CodeGenFunction &CGF, const OMPLoopDirective &S, OpenMPScheduleClauseKind &ScheduleKind, const Expr *&ChunkExpr) const override
Choose a default value for the schedule clause.
void emitNumTeamsClause(CodeGenFunction &CGF, const Expr *NumTeams, const Expr *ThreadLimit, SourceLocation Loc) override
This function ought to emit, in the general case, a call to.
void emitCriticalRegion(CodeGenFunction &CGF, StringRef CriticalName, const RegionCodeGenTy &CriticalOpGen, SourceLocation Loc, const Expr *Hint=nullptr) override
Emits a critical region.
void emitTeamsCall(CodeGenFunction &CGF, const OMPExecutableDirective &D, SourceLocation Loc, llvm::Function *OutlinedFn, ArrayRef< llvm::Value * > CapturedVars) override
Emits code for teams call of the OutlinedFn with variables captured in a record which address is stor...
bool hasAllocateAttributeForGlobalVar(const VarDecl *VD, LangAS &AS) override
Checks if the variable has associated OMPAllocateDeclAttr attribute with the predefined allocator and...
void getKmpcFreeShared(CodeGenFunction &CGF, const std::pair< llvm::Value *, llvm::Value * > &AddrSizePair) override
Get call to __kmpc_free_shared.
llvm::Function * emitParallelOutlinedFunction(CodeGenFunction &CGF, const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) override
Emits inlined function for the specified OpenMP parallel.
void functionFinished(CodeGenFunction &CGF) override
Cleans up references to the objects in finished function.
llvm::Value * getGPUThreadID(CodeGenFunction &CGF)
Get the id of the current thread on the GPU.
void emitNumThreadsClause(CodeGenFunction &CGF, llvm::Value *NumThreads, SourceLocation Loc, OpenMPNumThreadsClauseModifier Modifier=OMPC_NUMTHREADS_unknown, OpenMPSeverityClauseKind Severity=OMPC_SEVERITY_fatal, const Expr *Message=nullptr) override
Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32global_tid, kmp_int32 num_threads) ...
void processRequiresDirective(const OMPRequiresDecl *D) override
Perform check on requires decl to ensure that target architecture supports unified addressing.
bool isDelayedVariableLengthDecl(CodeGenFunction &CGF, const VarDecl *VD) const override
Declare generalized virtual functions which need to be defined by all specializations of OpenMPGPURun...
void emitOutlinedFunctionCall(CodeGenFunction &CGF, SourceLocation Loc, llvm::FunctionCallee OutlinedFn, ArrayRef< llvm::Value * > Args={}) const override
Emits call of the outlined function with the provided arguments, translating these arguments to corre...
Address getParameterAddress(CodeGenFunction &CGF, const VarDecl *NativeParam, const VarDecl *TargetParam) const override
Gets the address of the native argument basing on the address of the target-specific parameter.
ExecutionMode
Defines the execution mode.
@ EM_NonSPMD
Non-SPMD execution mode (1 master thread, others are workers).
@ EM_Unknown
Unknown execution mode (orphaned directive).
@ EM_SPMD
SPMD execution mode (all threads are worker threads).
void emitBarrierCall(CodeGenFunction &CGF, SourceLocation Loc, OpenMPDirectiveKind Kind, bool EmitChecks=true, bool ForceSimpleCall=false) override
Emit an implicit/explicit barrier for OpenMP threads.
llvm::Value * getGPUNumThreads(CodeGenFunction &CGF)
Get the maximum number of threads in a block of the GPU.
const VarDecl * translateParameter(const FieldDecl *FD, const VarDecl *NativeParam) const override
Translates the native parameter of outlined function if this is required for target.
std::pair< llvm::Value *, llvm::Value * > getKmpcAllocShared(CodeGenFunction &CGF, const VarDecl *VD) override
Get call to __kmpc_alloc_shared.
bool isGPU() const override
Returns true if the current target is a GPU.
void emitParallelCall(CodeGenFunction &CGF, SourceLocation Loc, llvm::Function *OutlinedFn, ArrayRef< llvm::Value * > CapturedVars, const Expr *IfCond, llvm::Value *NumThreads, OpenMPNumThreadsClauseModifier NumThreadsModifier=OMPC_NUMTHREADS_unknown, OpenMPSeverityClauseKind Severity=OMPC_SEVERITY_fatal, const Expr *Message=nullptr) override
Emits code for parallel or serial call of the OutlinedFn with variables captured in a record which ad...
void adjustTargetSpecificDataForLambdas(CodeGenFunction &CGF, const OMPExecutableDirective &D) const override
Adjust some parameters for the target-based directives, like addresses of the variables captured by r...
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
This class organizes the cross-function state that is used while generating LLVM code.
Class provides a way to call simple version of codegen for OpenMP region, or an advanced with possibl...
Decl - This represents one declaration (or definition), e.g.
Definition DeclBase.h:86
This represents one expression.
Definition Expr.h:112
Represents a member of a struct/union/class.
Definition Decl.h:3157
This represents 'pragma omp requires...' directive.
Definition DeclOpenMP.h:479
Encodes a location in the source.
Represents a variable declaration or definition.
Definition Decl.h:925
The JSON file list parser is used to communicate input to InstallAPI.
OpenMPDistScheduleClauseKind
OpenMP attributes for 'dist_schedule' clause.
OpenMPSeverityClauseKind
OpenMP attributes for 'severity' clause.
LangAS
Defines the address space values used by the address space qualifier of QualType.
llvm::omp::Directive OpenMPDirectiveKind
OpenMP directives.
Definition OpenMPKinds.h:25
OpenMPNumThreadsClauseModifier
@ OMPC_NUMTHREADS_unknown
OpenMPScheduleClauseKind
OpenMP attributes for 'schedule' clause.
Definition OpenMPKinds.h:31