1 | //===----- CGOpenMPRuntime.h - Interface to OpenMP Runtimes -----*- C++ -*-===// |
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 class for OpenMP runtime code generation. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIME_H |
14 | #define LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIME_H |
15 | |
16 | #include "CGValue.h" |
17 | #include "clang/AST/DeclOpenMP.h" |
18 | #include "clang/AST/GlobalDecl.h" |
19 | #include "clang/AST/Type.h" |
20 | #include "clang/Basic/OpenMPKinds.h" |
21 | #include "clang/Basic/SourceLocation.h" |
22 | #include "llvm/ADT/DenseMap.h" |
23 | #include "llvm/ADT/PointerIntPair.h" |
24 | #include "llvm/ADT/SmallPtrSet.h" |
25 | #include "llvm/ADT/StringMap.h" |
26 | #include "llvm/ADT/StringSet.h" |
27 | #include "llvm/Frontend/OpenMP/OMPConstants.h" |
28 | #include "llvm/Frontend/OpenMP/OMPIRBuilder.h" |
29 | #include "llvm/IR/Function.h" |
30 | #include "llvm/IR/ValueHandle.h" |
31 | #include "llvm/Support/AtomicOrdering.h" |
32 | |
33 | namespace llvm { |
34 | class ArrayType; |
35 | class Constant; |
36 | class FunctionType; |
37 | class GlobalVariable; |
38 | class Type; |
39 | class Value; |
40 | class OpenMPIRBuilder; |
41 | } // namespace llvm |
42 | |
43 | namespace clang { |
44 | class Expr; |
45 | class OMPDependClause; |
46 | class OMPExecutableDirective; |
47 | class OMPLoopDirective; |
48 | class VarDecl; |
49 | class OMPDeclareReductionDecl; |
50 | |
51 | namespace CodeGen { |
52 | class Address; |
53 | class CodeGenFunction; |
54 | class CodeGenModule; |
55 | |
56 | /// A basic class for pre|post-action for advanced codegen sequence for OpenMP |
57 | /// region. |
58 | class PrePostActionTy { |
59 | public: |
60 | explicit PrePostActionTy() {} |
61 | virtual void Enter(CodeGenFunction &CGF) {} |
62 | virtual void Exit(CodeGenFunction &CGF) {} |
63 | virtual ~PrePostActionTy() {} |
64 | }; |
65 | |
66 | /// Class provides a way to call simple version of codegen for OpenMP region, or |
67 | /// an advanced with possible pre|post-actions in codegen. |
68 | class RegionCodeGenTy final { |
69 | intptr_t CodeGen; |
70 | typedef void (*CodeGenTy)(intptr_t, CodeGenFunction &, PrePostActionTy &); |
71 | CodeGenTy Callback; |
72 | mutable PrePostActionTy *PrePostAction; |
73 | RegionCodeGenTy() = delete; |
74 | template <typename Callable> |
75 | static void CallbackFn(intptr_t CodeGen, CodeGenFunction &CGF, |
76 | PrePostActionTy &Action) { |
77 | return (*reinterpret_cast<Callable *>(CodeGen))(CGF, Action); |
78 | } |
79 | |
80 | public: |
81 | template <typename Callable> |
82 | RegionCodeGenTy( |
83 | Callable &&CodeGen, |
84 | std::enable_if_t<!std::is_same<std::remove_reference_t<Callable>, |
85 | RegionCodeGenTy>::value> * = nullptr) |
86 | : CodeGen(reinterpret_cast<intptr_t>(&CodeGen)), |
87 | Callback(CallbackFn<std::remove_reference_t<Callable>>), |
88 | PrePostAction(nullptr) {} |
89 | void setAction(PrePostActionTy &Action) const { PrePostAction = &Action; } |
90 | void operator()(CodeGenFunction &CGF) const; |
91 | }; |
92 | |
93 | struct OMPTaskDataTy final { |
94 | SmallVector<const Expr *, 4> PrivateVars; |
95 | SmallVector<const Expr *, 4> PrivateCopies; |
96 | SmallVector<const Expr *, 4> FirstprivateVars; |
97 | SmallVector<const Expr *, 4> FirstprivateCopies; |
98 | SmallVector<const Expr *, 4> FirstprivateInits; |
99 | SmallVector<const Expr *, 4> LastprivateVars; |
100 | SmallVector<const Expr *, 4> LastprivateCopies; |
101 | SmallVector<const Expr *, 4> ReductionVars; |
102 | SmallVector<const Expr *, 4> ReductionOrigs; |
103 | SmallVector<const Expr *, 4> ReductionCopies; |
104 | SmallVector<const Expr *, 4> ReductionOps; |
105 | SmallVector<CanonicalDeclPtr<const VarDecl>, 4> PrivateLocals; |
106 | struct DependData { |
107 | OpenMPDependClauseKind DepKind = OMPC_DEPEND_unknown; |
108 | const Expr *IteratorExpr = nullptr; |
109 | SmallVector<const Expr *, 4> DepExprs; |
110 | explicit DependData() = default; |
111 | DependData(OpenMPDependClauseKind DepKind, const Expr *IteratorExpr) |
112 | : DepKind(DepKind), IteratorExpr(IteratorExpr) {} |
113 | }; |
114 | SmallVector<DependData, 4> Dependences; |
115 | llvm::PointerIntPair<llvm::Value *, 1, bool> Final; |
116 | llvm::PointerIntPair<llvm::Value *, 1, bool> Schedule; |
117 | llvm::PointerIntPair<llvm::Value *, 1, bool> Priority; |
118 | llvm::Value *Reductions = nullptr; |
119 | unsigned NumberOfParts = 0; |
120 | bool Tied = true; |
121 | bool Nogroup = false; |
122 | bool IsReductionWithTaskMod = false; |
123 | bool IsWorksharingReduction = false; |
124 | bool HasNowaitClause = false; |
125 | }; |
126 | |
127 | /// Class intended to support codegen of all kind of the reduction clauses. |
128 | class ReductionCodeGen { |
129 | private: |
130 | /// Data required for codegen of reduction clauses. |
131 | struct ReductionData { |
132 | /// Reference to the item shared between tasks to reduce into. |
133 | const Expr *Shared = nullptr; |
134 | /// Reference to the original item. |
135 | const Expr *Ref = nullptr; |
136 | /// Helper expression for generation of private copy. |
137 | const Expr *Private = nullptr; |
138 | /// Helper expression for generation reduction operation. |
139 | const Expr *ReductionOp = nullptr; |
140 | ReductionData(const Expr *Shared, const Expr *Ref, const Expr *Private, |
141 | const Expr *ReductionOp) |
142 | : Shared(Shared), Ref(Ref), Private(Private), ReductionOp(ReductionOp) { |
143 | } |
144 | }; |
145 | /// List of reduction-based clauses. |
146 | SmallVector<ReductionData, 4> ClausesData; |
147 | |
148 | /// List of addresses of shared variables/expressions. |
149 | SmallVector<std::pair<LValue, LValue>, 4> SharedAddresses; |
150 | /// List of addresses of original variables/expressions. |
151 | SmallVector<std::pair<LValue, LValue>, 4> OrigAddresses; |
152 | /// Sizes of the reduction items in chars. |
153 | SmallVector<std::pair<llvm::Value *, llvm::Value *>, 4> Sizes; |
154 | /// Base declarations for the reduction items. |
155 | SmallVector<const VarDecl *, 4> BaseDecls; |
156 | |
157 | /// Emits lvalue for shared expression. |
158 | LValue emitSharedLValue(CodeGenFunction &CGF, const Expr *E); |
159 | /// Emits upper bound for shared expression (if array section). |
160 | LValue emitSharedLValueUB(CodeGenFunction &CGF, const Expr *E); |
161 | /// Performs aggregate initialization. |
162 | /// \param N Number of reduction item in the common list. |
163 | /// \param PrivateAddr Address of the corresponding private item. |
164 | /// \param SharedAddr Address of the original shared variable. |
165 | /// \param DRD Declare reduction construct used for reduction item. |
166 | void emitAggregateInitialization(CodeGenFunction &CGF, unsigned N, |
167 | Address PrivateAddr, Address SharedAddr, |
168 | const OMPDeclareReductionDecl *DRD); |
169 | |
170 | public: |
171 | ReductionCodeGen(ArrayRef<const Expr *> Shareds, ArrayRef<const Expr *> Origs, |
172 | ArrayRef<const Expr *> Privates, |
173 | ArrayRef<const Expr *> ReductionOps); |
174 | /// Emits lvalue for the shared and original reduction item. |
175 | /// \param N Number of the reduction item. |
176 | void emitSharedOrigLValue(CodeGenFunction &CGF, unsigned N); |
177 | /// Emits the code for the variable-modified type, if required. |
178 | /// \param N Number of the reduction item. |
179 | void emitAggregateType(CodeGenFunction &CGF, unsigned N); |
180 | /// Emits the code for the variable-modified type, if required. |
181 | /// \param N Number of the reduction item. |
182 | /// \param Size Size of the type in chars. |
183 | void emitAggregateType(CodeGenFunction &CGF, unsigned N, llvm::Value *Size); |
184 | /// Performs initialization of the private copy for the reduction item. |
185 | /// \param N Number of the reduction item. |
186 | /// \param PrivateAddr Address of the corresponding private item. |
187 | /// \param DefaultInit Default initialization sequence that should be |
188 | /// performed if no reduction specific initialization is found. |
189 | /// \param SharedAddr Address of the original shared variable. |
190 | void |
191 | emitInitialization(CodeGenFunction &CGF, unsigned N, Address PrivateAddr, |
192 | Address SharedAddr, |
193 | llvm::function_ref<bool(CodeGenFunction &)> DefaultInit); |
194 | /// Returns true if the private copy requires cleanups. |
195 | bool needCleanups(unsigned N); |
196 | /// Emits cleanup code for the reduction item. |
197 | /// \param N Number of the reduction item. |
198 | /// \param PrivateAddr Address of the corresponding private item. |
199 | void emitCleanups(CodeGenFunction &CGF, unsigned N, Address PrivateAddr); |
200 | /// Adjusts \p PrivatedAddr for using instead of the original variable |
201 | /// address in normal operations. |
202 | /// \param N Number of the reduction item. |
203 | /// \param PrivateAddr Address of the corresponding private item. |
204 | Address adjustPrivateAddress(CodeGenFunction &CGF, unsigned N, |
205 | Address PrivateAddr); |
206 | /// Returns LValue for the reduction item. |
207 | LValue getSharedLValue(unsigned N) const { return SharedAddresses[N].first; } |
208 | /// Returns LValue for the original reduction item. |
209 | LValue getOrigLValue(unsigned N) const { return OrigAddresses[N].first; } |
210 | /// Returns the size of the reduction item (in chars and total number of |
211 | /// elements in the item), or nullptr, if the size is a constant. |
212 | std::pair<llvm::Value *, llvm::Value *> getSizes(unsigned N) const { |
213 | return Sizes[N]; |
214 | } |
215 | /// Returns the base declaration of the reduction item. |
216 | const VarDecl *getBaseDecl(unsigned N) const { return BaseDecls[N]; } |
217 | /// Returns the base declaration of the reduction item. |
218 | const Expr *getRefExpr(unsigned N) const { return ClausesData[N].Ref; } |
219 | /// Returns true if the initialization of the reduction item uses initializer |
220 | /// from declare reduction construct. |
221 | bool usesReductionInitializer(unsigned N) const; |
222 | /// Return the type of the private item. |
223 | QualType getPrivateType(unsigned N) const { |
224 | return cast<VarDecl>(Val: cast<DeclRefExpr>(Val: ClausesData[N].Private)->getDecl()) |
225 | ->getType(); |
226 | } |
227 | }; |
228 | |
229 | class CGOpenMPRuntime { |
230 | public: |
231 | /// Allows to disable automatic handling of functions used in target regions |
232 | /// as those marked as `omp declare target`. |
233 | class DisableAutoDeclareTargetRAII { |
234 | CodeGenModule &CGM; |
235 | bool SavedShouldMarkAsGlobal = false; |
236 | |
237 | public: |
238 | DisableAutoDeclareTargetRAII(CodeGenModule &CGM); |
239 | ~DisableAutoDeclareTargetRAII(); |
240 | }; |
241 | |
242 | /// Manages list of nontemporal decls for the specified directive. |
243 | class NontemporalDeclsRAII { |
244 | CodeGenModule &CGM; |
245 | const bool NeedToPush; |
246 | |
247 | public: |
248 | NontemporalDeclsRAII(CodeGenModule &CGM, const OMPLoopDirective &S); |
249 | ~NontemporalDeclsRAII(); |
250 | }; |
251 | |
252 | /// Manages list of nontemporal decls for the specified directive. |
253 | class UntiedTaskLocalDeclsRAII { |
254 | CodeGenModule &CGM; |
255 | const bool NeedToPush; |
256 | |
257 | public: |
258 | UntiedTaskLocalDeclsRAII( |
259 | CodeGenFunction &CGF, |
260 | const llvm::MapVector<CanonicalDeclPtr<const VarDecl>, |
261 | std::pair<Address, Address>> &LocalVars); |
262 | ~UntiedTaskLocalDeclsRAII(); |
263 | }; |
264 | |
265 | /// Maps the expression for the lastprivate variable to the global copy used |
266 | /// to store new value because original variables are not mapped in inner |
267 | /// parallel regions. Only private copies are captured but we need also to |
268 | /// store private copy in shared address. |
269 | /// Also, stores the expression for the private loop counter and it |
270 | /// threaprivate name. |
271 | struct LastprivateConditionalData { |
272 | llvm::MapVector<CanonicalDeclPtr<const Decl>, SmallString<16>> |
273 | DeclToUniqueName; |
274 | LValue IVLVal; |
275 | llvm::Function *Fn = nullptr; |
276 | bool Disabled = false; |
277 | }; |
278 | /// Manages list of lastprivate conditional decls for the specified directive. |
279 | class LastprivateConditionalRAII { |
280 | enum class ActionToDo { |
281 | DoNotPush, |
282 | PushAsLastprivateConditional, |
283 | DisableLastprivateConditional, |
284 | }; |
285 | CodeGenModule &CGM; |
286 | ActionToDo Action = ActionToDo::DoNotPush; |
287 | |
288 | /// Check and try to disable analysis of inner regions for changes in |
289 | /// lastprivate conditional. |
290 | void tryToDisableInnerAnalysis(const OMPExecutableDirective &S, |
291 | llvm::DenseSet<CanonicalDeclPtr<const Decl>> |
292 | &NeedToAddForLPCsAsDisabled) const; |
293 | |
294 | LastprivateConditionalRAII(CodeGenFunction &CGF, |
295 | const OMPExecutableDirective &S); |
296 | |
297 | public: |
298 | explicit LastprivateConditionalRAII(CodeGenFunction &CGF, |
299 | const OMPExecutableDirective &S, |
300 | LValue IVLVal); |
301 | static LastprivateConditionalRAII disable(CodeGenFunction &CGF, |
302 | const OMPExecutableDirective &S); |
303 | ~LastprivateConditionalRAII(); |
304 | }; |
305 | |
306 | llvm::OpenMPIRBuilder &getOMPBuilder() { return OMPBuilder; } |
307 | |
308 | protected: |
309 | CodeGenModule &CGM; |
310 | |
311 | /// An OpenMP-IR-Builder instance. |
312 | llvm::OpenMPIRBuilder OMPBuilder; |
313 | |
314 | /// Helper to determine the min/max number of threads/teams for \p D. |
315 | void computeMinAndMaxThreadsAndTeams(const OMPExecutableDirective &D, |
316 | CodeGenFunction &CGF, |
317 | int32_t &MinThreadsVal, |
318 | int32_t &MaxThreadsVal, |
319 | int32_t &MinTeamsVal, |
320 | int32_t &MaxTeamsVal); |
321 | |
322 | /// Helper to emit outlined function for 'target' directive. |
323 | /// \param D Directive to emit. |
324 | /// \param ParentName Name of the function that encloses the target region. |
325 | /// \param OutlinedFn Outlined function value to be defined by this call. |
326 | /// \param OutlinedFnID Outlined function ID value to be defined by this call. |
327 | /// \param IsOffloadEntry True if the outlined function is an offload entry. |
328 | /// \param CodeGen Lambda codegen specific to an accelerator device. |
329 | /// An outlined function may not be an entry if, e.g. the if clause always |
330 | /// evaluates to false. |
331 | virtual void emitTargetOutlinedFunctionHelper(const OMPExecutableDirective &D, |
332 | StringRef ParentName, |
333 | llvm::Function *&OutlinedFn, |
334 | llvm::Constant *&OutlinedFnID, |
335 | bool IsOffloadEntry, |
336 | const RegionCodeGenTy &CodeGen); |
337 | |
338 | /// Returns pointer to ident_t type. |
339 | llvm::Type *getIdentTyPointerTy(); |
340 | |
341 | /// Gets thread id value for the current thread. |
342 | /// |
343 | llvm::Value *getThreadID(CodeGenFunction &CGF, SourceLocation Loc); |
344 | |
345 | /// Get the function name of an outlined region. |
346 | std::string getOutlinedHelperName(StringRef Name) const; |
347 | std::string getOutlinedHelperName(CodeGenFunction &CGF) const; |
348 | |
349 | /// Get the function name of a reduction function. |
350 | std::string getReductionFuncName(StringRef Name) const; |
351 | |
352 | /// Emits \p Callee function call with arguments \p Args with location \p Loc. |
353 | void emitCall(CodeGenFunction &CGF, SourceLocation Loc, |
354 | llvm::FunctionCallee Callee, |
355 | ArrayRef<llvm::Value *> Args = std::nullopt) const; |
356 | |
357 | /// Emits address of the word in a memory where current thread id is |
358 | /// stored. |
359 | virtual Address emitThreadIDAddress(CodeGenFunction &CGF, SourceLocation Loc); |
360 | |
361 | void setLocThreadIdInsertPt(CodeGenFunction &CGF, |
362 | bool AtCurrentPoint = false); |
363 | void clearLocThreadIdInsertPt(CodeGenFunction &CGF); |
364 | |
365 | /// Check if the default location must be constant. |
366 | /// Default is false to support OMPT/OMPD. |
367 | virtual bool isDefaultLocationConstant() const { return false; } |
368 | |
369 | /// Returns additional flags that can be stored in reserved_2 field of the |
370 | /// default location. |
371 | virtual unsigned getDefaultLocationReserved2Flags() const { return 0; } |
372 | |
373 | /// Returns default flags for the barriers depending on the directive, for |
374 | /// which this barier is going to be emitted. |
375 | static unsigned getDefaultFlagsForBarriers(OpenMPDirectiveKind Kind); |
376 | |
377 | /// Get the LLVM type for the critical name. |
378 | llvm::ArrayType *getKmpCriticalNameTy() const {return KmpCriticalNameTy;} |
379 | |
380 | /// Returns corresponding lock object for the specified critical region |
381 | /// name. If the lock object does not exist it is created, otherwise the |
382 | /// reference to the existing copy is returned. |
383 | /// \param CriticalName Name of the critical region. |
384 | /// |
385 | llvm::Value *getCriticalRegionLock(StringRef CriticalName); |
386 | |
387 | protected: |
388 | /// Map for SourceLocation and OpenMP runtime library debug locations. |
389 | typedef llvm::DenseMap<SourceLocation, llvm::Value *> OpenMPDebugLocMapTy; |
390 | OpenMPDebugLocMapTy OpenMPDebugLocMap; |
391 | /// The type for a microtask which gets passed to __kmpc_fork_call(). |
392 | /// Original representation is: |
393 | /// typedef void (kmpc_micro)(kmp_int32 global_tid, kmp_int32 bound_tid,...); |
394 | llvm::FunctionType *Kmpc_MicroTy = nullptr; |
395 | /// Stores debug location and ThreadID for the function. |
396 | struct DebugLocThreadIdTy { |
397 | llvm::Value *DebugLoc; |
398 | llvm::Value *ThreadID; |
399 | /// Insert point for the service instructions. |
400 | llvm::AssertingVH<llvm::Instruction> ServiceInsertPt = nullptr; |
401 | }; |
402 | /// Map of local debug location, ThreadId and functions. |
403 | typedef llvm::DenseMap<llvm::Function *, DebugLocThreadIdTy> |
404 | OpenMPLocThreadIDMapTy; |
405 | OpenMPLocThreadIDMapTy OpenMPLocThreadIDMap; |
406 | /// Map of UDRs and corresponding combiner/initializer. |
407 | typedef llvm::DenseMap<const OMPDeclareReductionDecl *, |
408 | std::pair<llvm::Function *, llvm::Function *>> |
409 | UDRMapTy; |
410 | UDRMapTy UDRMap; |
411 | /// Map of functions and locally defined UDRs. |
412 | typedef llvm::DenseMap<llvm::Function *, |
413 | SmallVector<const OMPDeclareReductionDecl *, 4>> |
414 | FunctionUDRMapTy; |
415 | FunctionUDRMapTy FunctionUDRMap; |
416 | /// Map from the user-defined mapper declaration to its corresponding |
417 | /// functions. |
418 | llvm::DenseMap<const OMPDeclareMapperDecl *, llvm::Function *> UDMMap; |
419 | /// Map of functions and their local user-defined mappers. |
420 | using FunctionUDMMapTy = |
421 | llvm::DenseMap<llvm::Function *, |
422 | SmallVector<const OMPDeclareMapperDecl *, 4>>; |
423 | FunctionUDMMapTy FunctionUDMMap; |
424 | /// Maps local variables marked as lastprivate conditional to their internal |
425 | /// types. |
426 | llvm::DenseMap<llvm::Function *, |
427 | llvm::DenseMap<CanonicalDeclPtr<const Decl>, |
428 | std::tuple<QualType, const FieldDecl *, |
429 | const FieldDecl *, LValue>>> |
430 | LastprivateConditionalToTypes; |
431 | /// Maps function to the position of the untied task locals stack. |
432 | llvm::DenseMap<llvm::Function *, unsigned> FunctionToUntiedTaskStackMap; |
433 | /// Type kmp_critical_name, originally defined as typedef kmp_int32 |
434 | /// kmp_critical_name[8]; |
435 | llvm::ArrayType *KmpCriticalNameTy; |
436 | /// An ordered map of auto-generated variables to their unique names. |
437 | /// It stores variables with the following names: 1) ".gomp_critical_user_" + |
438 | /// <critical_section_name> + ".var" for "omp critical" directives; 2) |
439 | /// <mangled_name_for_global_var> + ".cache." for cache for threadprivate |
440 | /// variables. |
441 | llvm::StringMap<llvm::AssertingVH<llvm::GlobalVariable>, |
442 | llvm::BumpPtrAllocator> InternalVars; |
443 | /// Type typedef kmp_int32 (* kmp_routine_entry_t)(kmp_int32, void *); |
444 | llvm::Type *KmpRoutineEntryPtrTy = nullptr; |
445 | QualType KmpRoutineEntryPtrQTy; |
446 | /// Type typedef struct kmp_task { |
447 | /// void * shareds; /**< pointer to block of pointers to |
448 | /// shared vars */ |
449 | /// kmp_routine_entry_t routine; /**< pointer to routine to call for |
450 | /// executing task */ |
451 | /// kmp_int32 part_id; /**< part id for the task */ |
452 | /// kmp_routine_entry_t destructors; /* pointer to function to invoke |
453 | /// deconstructors of firstprivate C++ objects */ |
454 | /// } kmp_task_t; |
455 | QualType KmpTaskTQTy; |
456 | /// Saved kmp_task_t for task directive. |
457 | QualType SavedKmpTaskTQTy; |
458 | /// Saved kmp_task_t for taskloop-based directive. |
459 | QualType SavedKmpTaskloopTQTy; |
460 | /// Type typedef struct kmp_depend_info { |
461 | /// kmp_intptr_t base_addr; |
462 | /// size_t len; |
463 | /// struct { |
464 | /// bool in:1; |
465 | /// bool out:1; |
466 | /// } flags; |
467 | /// } kmp_depend_info_t; |
468 | QualType KmpDependInfoTy; |
469 | /// Type typedef struct kmp_task_affinity_info { |
470 | /// kmp_intptr_t base_addr; |
471 | /// size_t len; |
472 | /// struct { |
473 | /// bool flag1 : 1; |
474 | /// bool flag2 : 1; |
475 | /// kmp_int32 reserved : 30; |
476 | /// } flags; |
477 | /// } kmp_task_affinity_info_t; |
478 | QualType KmpTaskAffinityInfoTy; |
479 | /// struct kmp_dim { // loop bounds info casted to kmp_int64 |
480 | /// kmp_int64 lo; // lower |
481 | /// kmp_int64 up; // upper |
482 | /// kmp_int64 st; // stride |
483 | /// }; |
484 | QualType KmpDimTy; |
485 | |
486 | bool ShouldMarkAsGlobal = true; |
487 | /// List of the emitted declarations. |
488 | llvm::DenseSet<CanonicalDeclPtr<const Decl>> AlreadyEmittedTargetDecls; |
489 | /// List of the global variables with their addresses that should not be |
490 | /// emitted for the target. |
491 | llvm::StringMap<llvm::WeakTrackingVH> EmittedNonTargetVariables; |
492 | |
493 | /// List of variables that can become declare target implicitly and, thus, |
494 | /// must be emitted. |
495 | llvm::SmallDenseSet<const VarDecl *> DeferredGlobalVariables; |
496 | |
497 | using NontemporalDeclsSet = llvm::SmallDenseSet<CanonicalDeclPtr<const Decl>>; |
498 | /// Stack for list of declarations in current context marked as nontemporal. |
499 | /// The set is the union of all current stack elements. |
500 | llvm::SmallVector<NontemporalDeclsSet, 4> NontemporalDeclsStack; |
501 | |
502 | using UntiedLocalVarsAddressesMap = |
503 | llvm::MapVector<CanonicalDeclPtr<const VarDecl>, |
504 | std::pair<Address, Address>>; |
505 | llvm::SmallVector<UntiedLocalVarsAddressesMap, 4> ; |
506 | |
507 | /// Stack for list of addresses of declarations in current context marked as |
508 | /// lastprivate conditional. The set is the union of all current stack |
509 | /// elements. |
510 | llvm::SmallVector<LastprivateConditionalData, 4> LastprivateConditionalStack; |
511 | |
512 | /// Flag for keeping track of weather a requires unified_shared_memory |
513 | /// directive is present. |
514 | bool HasRequiresUnifiedSharedMemory = false; |
515 | |
516 | /// Atomic ordering from the omp requires directive. |
517 | llvm::AtomicOrdering RequiresAtomicOrdering = llvm::AtomicOrdering::Monotonic; |
518 | |
519 | /// Flag for keeping track of weather a target region has been emitted. |
520 | bool HasEmittedTargetRegion = false; |
521 | |
522 | /// Flag for keeping track of weather a device routine has been emitted. |
523 | /// Device routines are specific to the |
524 | bool HasEmittedDeclareTargetRegion = false; |
525 | |
526 | /// Start scanning from statement \a S and emit all target regions |
527 | /// found along the way. |
528 | /// \param S Starting statement. |
529 | /// \param ParentName Name of the function declaration that is being scanned. |
530 | void scanForTargetRegionsFunctions(const Stmt *S, StringRef ParentName); |
531 | |
532 | /// Build type kmp_routine_entry_t (if not built yet). |
533 | void emitKmpRoutineEntryT(QualType KmpInt32Ty); |
534 | |
535 | /// Returns pointer to kmpc_micro type. |
536 | llvm::Type *getKmpc_MicroPointerTy(); |
537 | |
538 | /// If the specified mangled name is not in the module, create and |
539 | /// return threadprivate cache object. This object is a pointer's worth of |
540 | /// storage that's reserved for use by the OpenMP runtime. |
541 | /// \param VD Threadprivate variable. |
542 | /// \return Cache variable for the specified threadprivate. |
543 | llvm::Constant *getOrCreateThreadPrivateCache(const VarDecl *VD); |
544 | |
545 | /// Set of threadprivate variables with the generated initializer. |
546 | llvm::StringSet<> ThreadPrivateWithDefinition; |
547 | |
548 | /// Set of declare target variables with the generated initializer. |
549 | llvm::StringSet<> DeclareTargetWithDefinition; |
550 | |
551 | /// Emits initialization code for the threadprivate variables. |
552 | /// \param VDAddr Address of the global variable \a VD. |
553 | /// \param Ctor Pointer to a global init function for \a VD. |
554 | /// \param CopyCtor Pointer to a global copy function for \a VD. |
555 | /// \param Dtor Pointer to a global destructor function for \a VD. |
556 | /// \param Loc Location of threadprivate declaration. |
557 | void emitThreadPrivateVarInit(CodeGenFunction &CGF, Address VDAddr, |
558 | llvm::Value *Ctor, llvm::Value *CopyCtor, |
559 | llvm::Value *Dtor, SourceLocation Loc); |
560 | |
561 | /// Emit the array initialization or deletion portion for user-defined mapper |
562 | /// code generation. |
563 | void emitUDMapperArrayInitOrDel(CodeGenFunction &MapperCGF, |
564 | llvm::Value *Handle, llvm::Value *BasePtr, |
565 | llvm::Value *Ptr, llvm::Value *Size, |
566 | llvm::Value *MapType, llvm::Value *MapName, |
567 | CharUnits ElementSize, |
568 | llvm::BasicBlock *ExitBB, bool IsInit); |
569 | |
570 | struct TaskResultTy { |
571 | llvm::Value *NewTask = nullptr; |
572 | llvm::Function *TaskEntry = nullptr; |
573 | llvm::Value *NewTaskNewTaskTTy = nullptr; |
574 | LValue TDBase; |
575 | const RecordDecl *KmpTaskTQTyRD = nullptr; |
576 | llvm::Value *TaskDupFn = nullptr; |
577 | }; |
578 | /// Emit task region for the task directive. The task region is emitted in |
579 | /// several steps: |
580 | /// 1. Emit a call to kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 |
581 | /// gtid, kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, |
582 | /// kmp_routine_entry_t *task_entry). Here task_entry is a pointer to the |
583 | /// function: |
584 | /// kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) { |
585 | /// TaskFunction(gtid, tt->part_id, tt->shareds); |
586 | /// return 0; |
587 | /// } |
588 | /// 2. Copy a list of shared variables to field shareds of the resulting |
589 | /// structure kmp_task_t returned by the previous call (if any). |
590 | /// 3. Copy a pointer to destructions function to field destructions of the |
591 | /// resulting structure kmp_task_t. |
592 | /// \param D Current task directive. |
593 | /// \param TaskFunction An LLVM function with type void (*)(i32 /*gtid*/, i32 |
594 | /// /*part_id*/, captured_struct */*__context*/); |
595 | /// \param SharedsTy A type which contains references the shared variables. |
596 | /// \param Shareds Context with the list of shared variables from the \p |
597 | /// TaskFunction. |
598 | /// \param Data Additional data for task generation like tiednsee, final |
599 | /// state, list of privates etc. |
600 | TaskResultTy emitTaskInit(CodeGenFunction &CGF, SourceLocation Loc, |
601 | const OMPExecutableDirective &D, |
602 | llvm::Function *TaskFunction, QualType SharedsTy, |
603 | Address Shareds, const OMPTaskDataTy &Data); |
604 | |
605 | /// Emit update for lastprivate conditional data. |
606 | void emitLastprivateConditionalUpdate(CodeGenFunction &CGF, LValue IVLVal, |
607 | StringRef UniqueDeclName, LValue LVal, |
608 | SourceLocation Loc); |
609 | |
610 | /// Returns the number of the elements and the address of the depobj |
611 | /// dependency array. |
612 | /// \return Number of elements in depobj array and the pointer to the array of |
613 | /// dependencies. |
614 | std::pair<llvm::Value *, LValue> getDepobjElements(CodeGenFunction &CGF, |
615 | LValue DepobjLVal, |
616 | SourceLocation Loc); |
617 | |
618 | SmallVector<llvm::Value *, 4> |
619 | emitDepobjElementsSizes(CodeGenFunction &CGF, QualType &KmpDependInfoTy, |
620 | const OMPTaskDataTy::DependData &Data); |
621 | |
622 | void emitDepobjElements(CodeGenFunction &CGF, QualType &KmpDependInfoTy, |
623 | LValue PosLVal, const OMPTaskDataTy::DependData &Data, |
624 | Address DependenciesArray); |
625 | |
626 | public: |
627 | explicit CGOpenMPRuntime(CodeGenModule &CGM); |
628 | virtual ~CGOpenMPRuntime() {} |
629 | virtual void clear(); |
630 | |
631 | /// Emits object of ident_t type with info for source location. |
632 | /// \param Flags Flags for OpenMP location. |
633 | /// \param EmitLoc emit source location with debug-info is off. |
634 | /// |
635 | llvm::Value *emitUpdateLocation(CodeGenFunction &CGF, SourceLocation Loc, |
636 | unsigned Flags = 0, bool EmitLoc = false); |
637 | |
638 | /// Emit the number of teams for a target directive. Inspect the num_teams |
639 | /// clause associated with a teams construct combined or closely nested |
640 | /// with the target directive. |
641 | /// |
642 | /// Emit a team of size one for directives such as 'target parallel' that |
643 | /// have no associated teams construct. |
644 | /// |
645 | /// Otherwise, return nullptr. |
646 | const Expr *getNumTeamsExprForTargetDirective(CodeGenFunction &CGF, |
647 | const OMPExecutableDirective &D, |
648 | int32_t &MinTeamsVal, |
649 | int32_t &MaxTeamsVal); |
650 | llvm::Value *emitNumTeamsForTargetDirective(CodeGenFunction &CGF, |
651 | const OMPExecutableDirective &D); |
652 | |
653 | /// Check for a number of threads upper bound constant value (stored in \p |
654 | /// UpperBound), or expression (returned). If the value is conditional (via an |
655 | /// if-clause), store the condition in \p CondExpr. Similarly, a potential |
656 | /// thread limit expression is stored in \p ThreadLimitExpr. If \p |
657 | /// UpperBoundOnly is true, no expression evaluation is perfomed. |
658 | const Expr *getNumThreadsExprForTargetDirective( |
659 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
660 | int32_t &UpperBound, bool UpperBoundOnly, |
661 | llvm::Value **CondExpr = nullptr, const Expr **ThreadLimitExpr = nullptr); |
662 | |
663 | /// Emit an expression that denotes the number of threads a target region |
664 | /// shall use. Will generate "i32 0" to allow the runtime to choose. |
665 | llvm::Value * |
666 | emitNumThreadsForTargetDirective(CodeGenFunction &CGF, |
667 | const OMPExecutableDirective &D); |
668 | |
669 | /// Return the trip count of loops associated with constructs / 'target teams |
670 | /// distribute' and 'teams distribute parallel for'. \param SizeEmitter Emits |
671 | /// the int64 value for the number of iterations of the associated loop. |
672 | llvm::Value *emitTargetNumIterationsCall( |
673 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
674 | llvm::function_ref<llvm::Value *(CodeGenFunction &CGF, |
675 | const OMPLoopDirective &D)> |
676 | SizeEmitter); |
677 | |
678 | /// Returns true if the current target is a GPU. |
679 | virtual bool isGPU() const { return false; } |
680 | |
681 | /// Check if the variable length declaration is delayed: |
682 | virtual bool isDelayedVariableLengthDecl(CodeGenFunction &CGF, |
683 | const VarDecl *VD) const { |
684 | return false; |
685 | }; |
686 | |
687 | /// Get call to __kmpc_alloc_shared |
688 | virtual std::pair<llvm::Value *, llvm::Value *> |
689 | getKmpcAllocShared(CodeGenFunction &CGF, const VarDecl *VD) { |
690 | llvm_unreachable("not implemented" ); |
691 | } |
692 | |
693 | /// Get call to __kmpc_free_shared |
694 | virtual void getKmpcFreeShared( |
695 | CodeGenFunction &CGF, |
696 | const std::pair<llvm::Value *, llvm::Value *> &AddrSizePair) { |
697 | llvm_unreachable("not implemented" ); |
698 | } |
699 | |
700 | /// Emits code for OpenMP 'if' clause using specified \a CodeGen |
701 | /// function. Here is the logic: |
702 | /// if (Cond) { |
703 | /// ThenGen(); |
704 | /// } else { |
705 | /// ElseGen(); |
706 | /// } |
707 | void emitIfClause(CodeGenFunction &CGF, const Expr *Cond, |
708 | const RegionCodeGenTy &ThenGen, |
709 | const RegionCodeGenTy &ElseGen); |
710 | |
711 | /// Checks if the \p Body is the \a CompoundStmt and returns its child |
712 | /// statement iff there is only one that is not evaluatable at the compile |
713 | /// time. |
714 | static const Stmt *getSingleCompoundChild(ASTContext &Ctx, const Stmt *Body); |
715 | |
716 | /// Get the platform-specific name separator. |
717 | std::string getName(ArrayRef<StringRef> Parts) const; |
718 | |
719 | /// Emit code for the specified user defined reduction construct. |
720 | virtual void emitUserDefinedReduction(CodeGenFunction *CGF, |
721 | const OMPDeclareReductionDecl *D); |
722 | /// Get combiner/initializer for the specified user-defined reduction, if any. |
723 | virtual std::pair<llvm::Function *, llvm::Function *> |
724 | getUserDefinedReduction(const OMPDeclareReductionDecl *D); |
725 | |
726 | /// Emit the function for the user defined mapper construct. |
727 | void emitUserDefinedMapper(const OMPDeclareMapperDecl *D, |
728 | CodeGenFunction *CGF = nullptr); |
729 | /// Get the function for the specified user-defined mapper. If it does not |
730 | /// exist, create one. |
731 | llvm::Function * |
732 | getOrCreateUserDefinedMapperFunc(const OMPDeclareMapperDecl *D); |
733 | |
734 | /// Emits outlined function for the specified OpenMP parallel directive |
735 | /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID, |
736 | /// kmp_int32 BoundID, struct context_vars*). |
737 | /// \param CGF Reference to current CodeGenFunction. |
738 | /// \param D OpenMP directive. |
739 | /// \param ThreadIDVar Variable for thread id in the current OpenMP region. |
740 | /// \param InnermostKind Kind of innermost directive (for simple directives it |
741 | /// is a directive itself, for combined - its innermost directive). |
742 | /// \param CodeGen Code generation sequence for the \a D directive. |
743 | virtual llvm::Function *emitParallelOutlinedFunction( |
744 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
745 | const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind, |
746 | const RegionCodeGenTy &CodeGen); |
747 | |
748 | /// Emits outlined function for the specified OpenMP teams directive |
749 | /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID, |
750 | /// kmp_int32 BoundID, struct context_vars*). |
751 | /// \param CGF Reference to current CodeGenFunction. |
752 | /// \param D OpenMP directive. |
753 | /// \param ThreadIDVar Variable for thread id in the current OpenMP region. |
754 | /// \param InnermostKind Kind of innermost directive (for simple directives it |
755 | /// is a directive itself, for combined - its innermost directive). |
756 | /// \param CodeGen Code generation sequence for the \a D directive. |
757 | virtual llvm::Function *emitTeamsOutlinedFunction( |
758 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
759 | const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind, |
760 | const RegionCodeGenTy &CodeGen); |
761 | |
762 | /// Emits outlined function for the OpenMP task directive \a D. This |
763 | /// outlined function has type void(*)(kmp_int32 ThreadID, struct task_t* |
764 | /// TaskT). |
765 | /// \param D OpenMP directive. |
766 | /// \param ThreadIDVar Variable for thread id in the current OpenMP region. |
767 | /// \param PartIDVar Variable for partition id in the current OpenMP untied |
768 | /// task region. |
769 | /// \param TaskTVar Variable for task_t argument. |
770 | /// \param InnermostKind Kind of innermost directive (for simple directives it |
771 | /// is a directive itself, for combined - its innermost directive). |
772 | /// \param CodeGen Code generation sequence for the \a D directive. |
773 | /// \param Tied true if task is generated for tied task, false otherwise. |
774 | /// \param NumberOfParts Number of parts in untied task. Ignored for tied |
775 | /// tasks. |
776 | /// |
777 | virtual llvm::Function *emitTaskOutlinedFunction( |
778 | const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, |
779 | const VarDecl *PartIDVar, const VarDecl *TaskTVar, |
780 | OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen, |
781 | bool Tied, unsigned &NumberOfParts); |
782 | |
783 | /// Cleans up references to the objects in finished function. |
784 | /// |
785 | virtual void functionFinished(CodeGenFunction &CGF); |
786 | |
787 | /// Emits code for parallel or serial call of the \a OutlinedFn with |
788 | /// variables captured in a record which address is stored in \a |
789 | /// CapturedStruct. |
790 | /// \param OutlinedFn Outlined function to be run in parallel threads. Type of |
791 | /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). |
792 | /// \param CapturedVars A pointer to the record with the references to |
793 | /// variables used in \a OutlinedFn function. |
794 | /// \param IfCond Condition in the associated 'if' clause, if it was |
795 | /// specified, nullptr otherwise. |
796 | /// \param NumThreads The value corresponding to the num_threads clause, if |
797 | /// any, or nullptr. |
798 | /// |
799 | virtual void emitParallelCall(CodeGenFunction &CGF, SourceLocation Loc, |
800 | llvm::Function *OutlinedFn, |
801 | ArrayRef<llvm::Value *> CapturedVars, |
802 | const Expr *IfCond, llvm::Value *NumThreads); |
803 | |
804 | /// Emits a critical region. |
805 | /// \param CriticalName Name of the critical region. |
806 | /// \param CriticalOpGen Generator for the statement associated with the given |
807 | /// critical region. |
808 | /// \param Hint Value of the 'hint' clause (optional). |
809 | virtual void emitCriticalRegion(CodeGenFunction &CGF, StringRef CriticalName, |
810 | const RegionCodeGenTy &CriticalOpGen, |
811 | SourceLocation Loc, |
812 | const Expr *Hint = nullptr); |
813 | |
814 | /// Emits a master region. |
815 | /// \param MasterOpGen Generator for the statement associated with the given |
816 | /// master region. |
817 | virtual void emitMasterRegion(CodeGenFunction &CGF, |
818 | const RegionCodeGenTy &MasterOpGen, |
819 | SourceLocation Loc); |
820 | |
821 | /// Emits a masked region. |
822 | /// \param MaskedOpGen Generator for the statement associated with the given |
823 | /// masked region. |
824 | virtual void emitMaskedRegion(CodeGenFunction &CGF, |
825 | const RegionCodeGenTy &MaskedOpGen, |
826 | SourceLocation Loc, |
827 | const Expr *Filter = nullptr); |
828 | |
829 | /// Emits code for a taskyield directive. |
830 | virtual void emitTaskyieldCall(CodeGenFunction &CGF, SourceLocation Loc); |
831 | |
832 | /// Emit __kmpc_error call for error directive |
833 | /// extern void __kmpc_error(ident_t *loc, int severity, const char *message); |
834 | virtual void emitErrorCall(CodeGenFunction &CGF, SourceLocation Loc, Expr *ME, |
835 | bool IsFatal); |
836 | |
837 | /// Emit a taskgroup region. |
838 | /// \param TaskgroupOpGen Generator for the statement associated with the |
839 | /// given taskgroup region. |
840 | virtual void emitTaskgroupRegion(CodeGenFunction &CGF, |
841 | const RegionCodeGenTy &TaskgroupOpGen, |
842 | SourceLocation Loc); |
843 | |
844 | /// Emits a single region. |
845 | /// \param SingleOpGen Generator for the statement associated with the given |
846 | /// single region. |
847 | virtual void emitSingleRegion(CodeGenFunction &CGF, |
848 | const RegionCodeGenTy &SingleOpGen, |
849 | SourceLocation Loc, |
850 | ArrayRef<const Expr *> CopyprivateVars, |
851 | ArrayRef<const Expr *> DestExprs, |
852 | ArrayRef<const Expr *> SrcExprs, |
853 | ArrayRef<const Expr *> AssignmentOps); |
854 | |
855 | /// Emit an ordered region. |
856 | /// \param OrderedOpGen Generator for the statement associated with the given |
857 | /// ordered region. |
858 | virtual void emitOrderedRegion(CodeGenFunction &CGF, |
859 | const RegionCodeGenTy &OrderedOpGen, |
860 | SourceLocation Loc, bool IsThreads); |
861 | |
862 | /// Emit an implicit/explicit barrier for OpenMP threads. |
863 | /// \param Kind Directive for which this implicit barrier call must be |
864 | /// generated. Must be OMPD_barrier for explicit barrier generation. |
865 | /// \param EmitChecks true if need to emit checks for cancellation barriers. |
866 | /// \param ForceSimpleCall true simple barrier call must be emitted, false if |
867 | /// runtime class decides which one to emit (simple or with cancellation |
868 | /// checks). |
869 | /// |
870 | virtual void emitBarrierCall(CodeGenFunction &CGF, SourceLocation Loc, |
871 | OpenMPDirectiveKind Kind, |
872 | bool EmitChecks = true, |
873 | bool ForceSimpleCall = false); |
874 | |
875 | /// Check if the specified \a ScheduleKind is static non-chunked. |
876 | /// This kind of worksharing directive is emitted without outer loop. |
877 | /// \param ScheduleKind Schedule kind specified in the 'schedule' clause. |
878 | /// \param Chunked True if chunk is specified in the clause. |
879 | /// |
880 | virtual bool isStaticNonchunked(OpenMPScheduleClauseKind ScheduleKind, |
881 | bool Chunked) const; |
882 | |
883 | /// Check if the specified \a ScheduleKind is static non-chunked. |
884 | /// This kind of distribute directive is emitted without outer loop. |
885 | /// \param ScheduleKind Schedule kind specified in the 'dist_schedule' clause. |
886 | /// \param Chunked True if chunk is specified in the clause. |
887 | /// |
888 | virtual bool isStaticNonchunked(OpenMPDistScheduleClauseKind ScheduleKind, |
889 | bool Chunked) const; |
890 | |
891 | /// Check if the specified \a ScheduleKind is static chunked. |
892 | /// \param ScheduleKind Schedule kind specified in the 'schedule' clause. |
893 | /// \param Chunked True if chunk is specified in the clause. |
894 | /// |
895 | virtual bool isStaticChunked(OpenMPScheduleClauseKind ScheduleKind, |
896 | bool Chunked) const; |
897 | |
898 | /// Check if the specified \a ScheduleKind is static non-chunked. |
899 | /// \param ScheduleKind Schedule kind specified in the 'dist_schedule' clause. |
900 | /// \param Chunked True if chunk is specified in the clause. |
901 | /// |
902 | virtual bool isStaticChunked(OpenMPDistScheduleClauseKind ScheduleKind, |
903 | bool Chunked) const; |
904 | |
905 | /// Check if the specified \a ScheduleKind is dynamic. |
906 | /// This kind of worksharing directive is emitted without outer loop. |
907 | /// \param ScheduleKind Schedule Kind specified in the 'schedule' clause. |
908 | /// |
909 | virtual bool isDynamic(OpenMPScheduleClauseKind ScheduleKind) const; |
910 | |
911 | /// struct with the values to be passed to the dispatch runtime function |
912 | struct DispatchRTInput { |
913 | /// Loop lower bound |
914 | llvm::Value *LB = nullptr; |
915 | /// Loop upper bound |
916 | llvm::Value *UB = nullptr; |
917 | /// Chunk size specified using 'schedule' clause (nullptr if chunk |
918 | /// was not specified) |
919 | llvm::Value *Chunk = nullptr; |
920 | DispatchRTInput() = default; |
921 | DispatchRTInput(llvm::Value *LB, llvm::Value *UB, llvm::Value *Chunk) |
922 | : LB(LB), UB(UB), Chunk(Chunk) {} |
923 | }; |
924 | |
925 | /// Call the appropriate runtime routine to initialize it before start |
926 | /// of loop. |
927 | |
928 | /// This is used for non static scheduled types and when the ordered |
929 | /// clause is present on the loop construct. |
930 | /// Depending on the loop schedule, it is necessary to call some runtime |
931 | /// routine before start of the OpenMP loop to get the loop upper / lower |
932 | /// bounds \a LB and \a UB and stride \a ST. |
933 | /// |
934 | /// \param CGF Reference to current CodeGenFunction. |
935 | /// \param Loc Clang source location. |
936 | /// \param ScheduleKind Schedule kind, specified by the 'schedule' clause. |
937 | /// \param IVSize Size of the iteration variable in bits. |
938 | /// \param IVSigned Sign of the iteration variable. |
939 | /// \param Ordered true if loop is ordered, false otherwise. |
940 | /// \param DispatchValues struct containing llvm values for lower bound, upper |
941 | /// bound, and chunk expression. |
942 | /// For the default (nullptr) value, the chunk 1 will be used. |
943 | /// |
944 | virtual void emitForDispatchInit(CodeGenFunction &CGF, SourceLocation Loc, |
945 | const OpenMPScheduleTy &ScheduleKind, |
946 | unsigned IVSize, bool IVSigned, bool Ordered, |
947 | const DispatchRTInput &DispatchValues); |
948 | |
949 | /// Struct with the values to be passed to the static runtime function |
950 | struct StaticRTInput { |
951 | /// Size of the iteration variable in bits. |
952 | unsigned IVSize = 0; |
953 | /// Sign of the iteration variable. |
954 | bool IVSigned = false; |
955 | /// true if loop is ordered, false otherwise. |
956 | bool Ordered = false; |
957 | /// Address of the output variable in which the flag of the last iteration |
958 | /// is returned. |
959 | Address IL = Address::invalid(); |
960 | /// Address of the output variable in which the lower iteration number is |
961 | /// returned. |
962 | Address LB = Address::invalid(); |
963 | /// Address of the output variable in which the upper iteration number is |
964 | /// returned. |
965 | Address UB = Address::invalid(); |
966 | /// Address of the output variable in which the stride value is returned |
967 | /// necessary to generated the static_chunked scheduled loop. |
968 | Address ST = Address::invalid(); |
969 | /// Value of the chunk for the static_chunked scheduled loop. For the |
970 | /// default (nullptr) value, the chunk 1 will be used. |
971 | llvm::Value *Chunk = nullptr; |
972 | StaticRTInput(unsigned IVSize, bool IVSigned, bool Ordered, Address IL, |
973 | Address LB, Address UB, Address ST, |
974 | llvm::Value *Chunk = nullptr) |
975 | : IVSize(IVSize), IVSigned(IVSigned), Ordered(Ordered), IL(IL), LB(LB), |
976 | UB(UB), ST(ST), Chunk(Chunk) {} |
977 | }; |
978 | /// Call the appropriate runtime routine to initialize it before start |
979 | /// of loop. |
980 | /// |
981 | /// This is used only in case of static schedule, when the user did not |
982 | /// specify a ordered clause on the loop construct. |
983 | /// Depending on the loop schedule, it is necessary to call some runtime |
984 | /// routine before start of the OpenMP loop to get the loop upper / lower |
985 | /// bounds LB and UB and stride ST. |
986 | /// |
987 | /// \param CGF Reference to current CodeGenFunction. |
988 | /// \param Loc Clang source location. |
989 | /// \param DKind Kind of the directive. |
990 | /// \param ScheduleKind Schedule kind, specified by the 'schedule' clause. |
991 | /// \param Values Input arguments for the construct. |
992 | /// |
993 | virtual void emitForStaticInit(CodeGenFunction &CGF, SourceLocation Loc, |
994 | OpenMPDirectiveKind DKind, |
995 | const OpenMPScheduleTy &ScheduleKind, |
996 | const StaticRTInput &Values); |
997 | |
998 | /// |
999 | /// \param CGF Reference to current CodeGenFunction. |
1000 | /// \param Loc Clang source location. |
1001 | /// \param SchedKind Schedule kind, specified by the 'dist_schedule' clause. |
1002 | /// \param Values Input arguments for the construct. |
1003 | /// |
1004 | virtual void emitDistributeStaticInit(CodeGenFunction &CGF, |
1005 | SourceLocation Loc, |
1006 | OpenMPDistScheduleClauseKind SchedKind, |
1007 | const StaticRTInput &Values); |
1008 | |
1009 | /// Call the appropriate runtime routine to notify that we finished |
1010 | /// iteration of the ordered loop with the dynamic scheduling. |
1011 | /// |
1012 | /// \param CGF Reference to current CodeGenFunction. |
1013 | /// \param Loc Clang source location. |
1014 | /// \param IVSize Size of the iteration variable in bits. |
1015 | /// \param IVSigned Sign of the iteration variable. |
1016 | /// |
1017 | virtual void emitForOrderedIterationEnd(CodeGenFunction &CGF, |
1018 | SourceLocation Loc, unsigned IVSize, |
1019 | bool IVSigned); |
1020 | |
1021 | /// Call the appropriate runtime routine to notify that we finished |
1022 | /// all the work with current loop. |
1023 | /// |
1024 | /// \param CGF Reference to current CodeGenFunction. |
1025 | /// \param Loc Clang source location. |
1026 | /// \param DKind Kind of the directive for which the static finish is emitted. |
1027 | /// |
1028 | virtual void emitForStaticFinish(CodeGenFunction &CGF, SourceLocation Loc, |
1029 | OpenMPDirectiveKind DKind); |
1030 | |
1031 | /// Call __kmpc_dispatch_next( |
1032 | /// ident_t *loc, kmp_int32 tid, kmp_int32 *p_lastiter, |
1033 | /// kmp_int[32|64] *p_lower, kmp_int[32|64] *p_upper, |
1034 | /// kmp_int[32|64] *p_stride); |
1035 | /// \param IVSize Size of the iteration variable in bits. |
1036 | /// \param IVSigned Sign of the iteration variable. |
1037 | /// \param IL Address of the output variable in which the flag of the |
1038 | /// last iteration is returned. |
1039 | /// \param LB Address of the output variable in which the lower iteration |
1040 | /// number is returned. |
1041 | /// \param UB Address of the output variable in which the upper iteration |
1042 | /// number is returned. |
1043 | /// \param ST Address of the output variable in which the stride value is |
1044 | /// returned. |
1045 | virtual llvm::Value *emitForNext(CodeGenFunction &CGF, SourceLocation Loc, |
1046 | unsigned IVSize, bool IVSigned, |
1047 | Address IL, Address LB, |
1048 | Address UB, Address ST); |
1049 | |
1050 | /// Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32 |
1051 | /// global_tid, kmp_int32 num_threads) to generate code for 'num_threads' |
1052 | /// clause. |
1053 | /// \param NumThreads An integer value of threads. |
1054 | virtual void emitNumThreadsClause(CodeGenFunction &CGF, |
1055 | llvm::Value *NumThreads, |
1056 | SourceLocation Loc); |
1057 | |
1058 | /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 |
1059 | /// global_tid, int proc_bind) to generate code for 'proc_bind' clause. |
1060 | virtual void emitProcBindClause(CodeGenFunction &CGF, |
1061 | llvm::omp::ProcBindKind ProcBind, |
1062 | SourceLocation Loc); |
1063 | |
1064 | /// Returns address of the threadprivate variable for the current |
1065 | /// thread. |
1066 | /// \param VD Threadprivate variable. |
1067 | /// \param VDAddr Address of the global variable \a VD. |
1068 | /// \param Loc Location of the reference to threadprivate var. |
1069 | /// \return Address of the threadprivate variable for the current thread. |
1070 | virtual Address getAddrOfThreadPrivate(CodeGenFunction &CGF, |
1071 | const VarDecl *VD, |
1072 | Address VDAddr, |
1073 | SourceLocation Loc); |
1074 | |
1075 | /// Returns the address of the variable marked as declare target with link |
1076 | /// clause OR as declare target with to clause and unified memory. |
1077 | virtual Address getAddrOfDeclareTargetVar(const VarDecl *VD); |
1078 | |
1079 | /// Emit a code for initialization of threadprivate variable. It emits |
1080 | /// a call to runtime library which adds initial value to the newly created |
1081 | /// threadprivate variable (if it is not constant) and registers destructor |
1082 | /// for the variable (if any). |
1083 | /// \param VD Threadprivate variable. |
1084 | /// \param VDAddr Address of the global variable \a VD. |
1085 | /// \param Loc Location of threadprivate declaration. |
1086 | /// \param PerformInit true if initialization expression is not constant. |
1087 | virtual llvm::Function * |
1088 | emitThreadPrivateVarDefinition(const VarDecl *VD, Address VDAddr, |
1089 | SourceLocation Loc, bool PerformInit, |
1090 | CodeGenFunction *CGF = nullptr); |
1091 | |
1092 | /// Emit code for handling declare target functions in the runtime. |
1093 | /// \param FD Declare target function. |
1094 | /// \param Addr Address of the global \a FD. |
1095 | /// \param PerformInit true if initialization expression is not constant. |
1096 | virtual void emitDeclareTargetFunction(const FunctionDecl *FD, |
1097 | llvm::GlobalValue *GV); |
1098 | |
1099 | /// Creates artificial threadprivate variable with name \p Name and type \p |
1100 | /// VarType. |
1101 | /// \param VarType Type of the artificial threadprivate variable. |
1102 | /// \param Name Name of the artificial threadprivate variable. |
1103 | virtual Address getAddrOfArtificialThreadPrivate(CodeGenFunction &CGF, |
1104 | QualType VarType, |
1105 | StringRef Name); |
1106 | |
1107 | /// Emit flush of the variables specified in 'omp flush' directive. |
1108 | /// \param Vars List of variables to flush. |
1109 | virtual void emitFlush(CodeGenFunction &CGF, ArrayRef<const Expr *> Vars, |
1110 | SourceLocation Loc, llvm::AtomicOrdering AO); |
1111 | |
1112 | /// Emit task region for the task directive. The task region is |
1113 | /// emitted in several steps: |
1114 | /// 1. Emit a call to kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 |
1115 | /// gtid, kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, |
1116 | /// kmp_routine_entry_t *task_entry). Here task_entry is a pointer to the |
1117 | /// function: |
1118 | /// kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) { |
1119 | /// TaskFunction(gtid, tt->part_id, tt->shareds); |
1120 | /// return 0; |
1121 | /// } |
1122 | /// 2. Copy a list of shared variables to field shareds of the resulting |
1123 | /// structure kmp_task_t returned by the previous call (if any). |
1124 | /// 3. Copy a pointer to destructions function to field destructions of the |
1125 | /// resulting structure kmp_task_t. |
1126 | /// 4. Emit a call to kmp_int32 __kmpc_omp_task(ident_t *, kmp_int32 gtid, |
1127 | /// kmp_task_t *new_task), where new_task is a resulting structure from |
1128 | /// previous items. |
1129 | /// \param D Current task directive. |
1130 | /// \param TaskFunction An LLVM function with type void (*)(i32 /*gtid*/, i32 |
1131 | /// /*part_id*/, captured_struct */*__context*/); |
1132 | /// \param SharedsTy A type which contains references the shared variables. |
1133 | /// \param Shareds Context with the list of shared variables from the \p |
1134 | /// TaskFunction. |
1135 | /// \param IfCond Not a nullptr if 'if' clause was specified, nullptr |
1136 | /// otherwise. |
1137 | /// \param Data Additional data for task generation like tiednsee, final |
1138 | /// state, list of privates etc. |
1139 | virtual void emitTaskCall(CodeGenFunction &CGF, SourceLocation Loc, |
1140 | const OMPExecutableDirective &D, |
1141 | llvm::Function *TaskFunction, QualType SharedsTy, |
1142 | Address Shareds, const Expr *IfCond, |
1143 | const OMPTaskDataTy &Data); |
1144 | |
1145 | /// Emit task region for the taskloop directive. The taskloop region is |
1146 | /// emitted in several steps: |
1147 | /// 1. Emit a call to kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 |
1148 | /// gtid, kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, |
1149 | /// kmp_routine_entry_t *task_entry). Here task_entry is a pointer to the |
1150 | /// function: |
1151 | /// kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) { |
1152 | /// TaskFunction(gtid, tt->part_id, tt->shareds); |
1153 | /// return 0; |
1154 | /// } |
1155 | /// 2. Copy a list of shared variables to field shareds of the resulting |
1156 | /// structure kmp_task_t returned by the previous call (if any). |
1157 | /// 3. Copy a pointer to destructions function to field destructions of the |
1158 | /// resulting structure kmp_task_t. |
1159 | /// 4. Emit a call to void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t |
1160 | /// *task, int if_val, kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int |
1161 | /// nogroup, int sched, kmp_uint64 grainsize, void *task_dup ), where new_task |
1162 | /// is a resulting structure from |
1163 | /// previous items. |
1164 | /// \param D Current task directive. |
1165 | /// \param TaskFunction An LLVM function with type void (*)(i32 /*gtid*/, i32 |
1166 | /// /*part_id*/, captured_struct */*__context*/); |
1167 | /// \param SharedsTy A type which contains references the shared variables. |
1168 | /// \param Shareds Context with the list of shared variables from the \p |
1169 | /// TaskFunction. |
1170 | /// \param IfCond Not a nullptr if 'if' clause was specified, nullptr |
1171 | /// otherwise. |
1172 | /// \param Data Additional data for task generation like tiednsee, final |
1173 | /// state, list of privates etc. |
1174 | virtual void emitTaskLoopCall(CodeGenFunction &CGF, SourceLocation Loc, |
1175 | const OMPLoopDirective &D, |
1176 | llvm::Function *TaskFunction, |
1177 | QualType SharedsTy, Address Shareds, |
1178 | const Expr *IfCond, const OMPTaskDataTy &Data); |
1179 | |
1180 | /// Emit code for the directive that does not require outlining. |
1181 | /// |
1182 | /// \param InnermostKind Kind of innermost directive (for simple directives it |
1183 | /// is a directive itself, for combined - its innermost directive). |
1184 | /// \param CodeGen Code generation sequence for the \a D directive. |
1185 | /// \param HasCancel true if region has inner cancel directive, false |
1186 | /// otherwise. |
1187 | virtual void emitInlinedDirective(CodeGenFunction &CGF, |
1188 | OpenMPDirectiveKind InnermostKind, |
1189 | const RegionCodeGenTy &CodeGen, |
1190 | bool HasCancel = false); |
1191 | |
1192 | /// Emits reduction function. |
1193 | /// \param ReducerName Name of the function calling the reduction. |
1194 | /// \param ArgsElemType Array type containing pointers to reduction variables. |
1195 | /// \param Privates List of private copies for original reduction arguments. |
1196 | /// \param LHSExprs List of LHS in \a ReductionOps reduction operations. |
1197 | /// \param RHSExprs List of RHS in \a ReductionOps reduction operations. |
1198 | /// \param ReductionOps List of reduction operations in form 'LHS binop RHS' |
1199 | /// or 'operator binop(LHS, RHS)'. |
1200 | llvm::Function *emitReductionFunction( |
1201 | StringRef ReducerName, SourceLocation Loc, llvm::Type *ArgsElemType, |
1202 | ArrayRef<const Expr *> Privates, ArrayRef<const Expr *> LHSExprs, |
1203 | ArrayRef<const Expr *> RHSExprs, ArrayRef<const Expr *> ReductionOps); |
1204 | |
1205 | /// Emits single reduction combiner |
1206 | void emitSingleReductionCombiner(CodeGenFunction &CGF, |
1207 | const Expr *ReductionOp, |
1208 | const Expr *PrivateRef, |
1209 | const DeclRefExpr *LHS, |
1210 | const DeclRefExpr *RHS); |
1211 | |
1212 | struct ReductionOptionsTy { |
1213 | bool WithNowait; |
1214 | bool SimpleReduction; |
1215 | OpenMPDirectiveKind ReductionKind; |
1216 | }; |
1217 | /// Emit a code for reduction clause. Next code should be emitted for |
1218 | /// reduction: |
1219 | /// \code |
1220 | /// |
1221 | /// static kmp_critical_name lock = { 0 }; |
1222 | /// |
1223 | /// void reduce_func(void *lhs[<n>], void *rhs[<n>]) { |
1224 | /// ... |
1225 | /// *(Type<i>*)lhs[i] = RedOp<i>(*(Type<i>*)lhs[i], *(Type<i>*)rhs[i]); |
1226 | /// ... |
1227 | /// } |
1228 | /// |
1229 | /// ... |
1230 | /// void *RedList[<n>] = {&<RHSExprs>[0], ..., &<RHSExprs>[<n>-1]}; |
1231 | /// switch (__kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), |
1232 | /// RedList, reduce_func, &<lock>)) { |
1233 | /// case 1: |
1234 | /// ... |
1235 | /// <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); |
1236 | /// ... |
1237 | /// __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); |
1238 | /// break; |
1239 | /// case 2: |
1240 | /// ... |
1241 | /// Atomic(<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i])); |
1242 | /// ... |
1243 | /// break; |
1244 | /// default:; |
1245 | /// } |
1246 | /// \endcode |
1247 | /// |
1248 | /// \param Privates List of private copies for original reduction arguments. |
1249 | /// \param LHSExprs List of LHS in \a ReductionOps reduction operations. |
1250 | /// \param RHSExprs List of RHS in \a ReductionOps reduction operations. |
1251 | /// \param ReductionOps List of reduction operations in form 'LHS binop RHS' |
1252 | /// or 'operator binop(LHS, RHS)'. |
1253 | /// \param Options List of options for reduction codegen: |
1254 | /// WithNowait true if parent directive has also nowait clause, false |
1255 | /// otherwise. |
1256 | /// SimpleReduction Emit reduction operation only. Used for omp simd |
1257 | /// directive on the host. |
1258 | /// ReductionKind The kind of reduction to perform. |
1259 | virtual void emitReduction(CodeGenFunction &CGF, SourceLocation Loc, |
1260 | ArrayRef<const Expr *> Privates, |
1261 | ArrayRef<const Expr *> LHSExprs, |
1262 | ArrayRef<const Expr *> RHSExprs, |
1263 | ArrayRef<const Expr *> ReductionOps, |
1264 | ReductionOptionsTy Options); |
1265 | |
1266 | /// Emit a code for initialization of task reduction clause. Next code |
1267 | /// should be emitted for reduction: |
1268 | /// \code |
1269 | /// |
1270 | /// _taskred_item_t red_data[n]; |
1271 | /// ... |
1272 | /// red_data[i].shar = &shareds[i]; |
1273 | /// red_data[i].orig = &origs[i]; |
1274 | /// red_data[i].size = sizeof(origs[i]); |
1275 | /// red_data[i].f_init = (void*)RedInit<i>; |
1276 | /// red_data[i].f_fini = (void*)RedDest<i>; |
1277 | /// red_data[i].f_comb = (void*)RedOp<i>; |
1278 | /// red_data[i].flags = <Flag_i>; |
1279 | /// ... |
1280 | /// void* tg1 = __kmpc_taskred_init(gtid, n, red_data); |
1281 | /// \endcode |
1282 | /// For reduction clause with task modifier it emits the next call: |
1283 | /// \code |
1284 | /// |
1285 | /// _taskred_item_t red_data[n]; |
1286 | /// ... |
1287 | /// red_data[i].shar = &shareds[i]; |
1288 | /// red_data[i].orig = &origs[i]; |
1289 | /// red_data[i].size = sizeof(origs[i]); |
1290 | /// red_data[i].f_init = (void*)RedInit<i>; |
1291 | /// red_data[i].f_fini = (void*)RedDest<i>; |
1292 | /// red_data[i].f_comb = (void*)RedOp<i>; |
1293 | /// red_data[i].flags = <Flag_i>; |
1294 | /// ... |
1295 | /// void* tg1 = __kmpc_taskred_modifier_init(loc, gtid, is_worksharing, n, |
1296 | /// red_data); |
1297 | /// \endcode |
1298 | /// \param LHSExprs List of LHS in \a Data.ReductionOps reduction operations. |
1299 | /// \param RHSExprs List of RHS in \a Data.ReductionOps reduction operations. |
1300 | /// \param Data Additional data for task generation like tiedness, final |
1301 | /// state, list of privates, reductions etc. |
1302 | virtual llvm::Value *emitTaskReductionInit(CodeGenFunction &CGF, |
1303 | SourceLocation Loc, |
1304 | ArrayRef<const Expr *> LHSExprs, |
1305 | ArrayRef<const Expr *> RHSExprs, |
1306 | const OMPTaskDataTy &Data); |
1307 | |
1308 | /// Emits the following code for reduction clause with task modifier: |
1309 | /// \code |
1310 | /// __kmpc_task_reduction_modifier_fini(loc, gtid, is_worksharing); |
1311 | /// \endcode |
1312 | virtual void emitTaskReductionFini(CodeGenFunction &CGF, SourceLocation Loc, |
1313 | bool IsWorksharingReduction); |
1314 | |
1315 | /// Required to resolve existing problems in the runtime. Emits threadprivate |
1316 | /// variables to store the size of the VLAs/array sections for |
1317 | /// initializer/combiner/finalizer functions. |
1318 | /// \param RCG Allows to reuse an existing data for the reductions. |
1319 | /// \param N Reduction item for which fixups must be emitted. |
1320 | virtual void emitTaskReductionFixups(CodeGenFunction &CGF, SourceLocation Loc, |
1321 | ReductionCodeGen &RCG, unsigned N); |
1322 | |
1323 | /// Get the address of `void *` type of the privatue copy of the reduction |
1324 | /// item specified by the \p SharedLVal. |
1325 | /// \param ReductionsPtr Pointer to the reduction data returned by the |
1326 | /// emitTaskReductionInit function. |
1327 | /// \param SharedLVal Address of the original reduction item. |
1328 | virtual Address getTaskReductionItem(CodeGenFunction &CGF, SourceLocation Loc, |
1329 | llvm::Value *ReductionsPtr, |
1330 | LValue SharedLVal); |
1331 | |
1332 | /// Emit code for 'taskwait' directive. |
1333 | virtual void emitTaskwaitCall(CodeGenFunction &CGF, SourceLocation Loc, |
1334 | const OMPTaskDataTy &Data); |
1335 | |
1336 | /// Emit code for 'cancellation point' construct. |
1337 | /// \param CancelRegion Region kind for which the cancellation point must be |
1338 | /// emitted. |
1339 | /// |
1340 | virtual void emitCancellationPointCall(CodeGenFunction &CGF, |
1341 | SourceLocation Loc, |
1342 | OpenMPDirectiveKind CancelRegion); |
1343 | |
1344 | /// Emit code for 'cancel' construct. |
1345 | /// \param IfCond Condition in the associated 'if' clause, if it was |
1346 | /// specified, nullptr otherwise. |
1347 | /// \param CancelRegion Region kind for which the cancel must be emitted. |
1348 | /// |
1349 | virtual void emitCancelCall(CodeGenFunction &CGF, SourceLocation Loc, |
1350 | const Expr *IfCond, |
1351 | OpenMPDirectiveKind CancelRegion); |
1352 | |
1353 | /// Emit outilined function for 'target' directive. |
1354 | /// \param D Directive to emit. |
1355 | /// \param ParentName Name of the function that encloses the target region. |
1356 | /// \param OutlinedFn Outlined function value to be defined by this call. |
1357 | /// \param OutlinedFnID Outlined function ID value to be defined by this call. |
1358 | /// \param IsOffloadEntry True if the outlined function is an offload entry. |
1359 | /// \param CodeGen Code generation sequence for the \a D directive. |
1360 | /// An outlined function may not be an entry if, e.g. the if clause always |
1361 | /// evaluates to false. |
1362 | virtual void emitTargetOutlinedFunction(const OMPExecutableDirective &D, |
1363 | StringRef ParentName, |
1364 | llvm::Function *&OutlinedFn, |
1365 | llvm::Constant *&OutlinedFnID, |
1366 | bool IsOffloadEntry, |
1367 | const RegionCodeGenTy &CodeGen); |
1368 | |
1369 | /// Emit the target offloading code associated with \a D. The emitted |
1370 | /// code attempts offloading the execution to the device, an the event of |
1371 | /// a failure it executes the host version outlined in \a OutlinedFn. |
1372 | /// \param D Directive to emit. |
1373 | /// \param OutlinedFn Host version of the code to be offloaded. |
1374 | /// \param OutlinedFnID ID of host version of the code to be offloaded. |
1375 | /// \param IfCond Expression evaluated in if clause associated with the target |
1376 | /// directive, or null if no if clause is used. |
1377 | /// \param Device Expression evaluated in device clause associated with the |
1378 | /// target directive, or null if no device clause is used and device modifier. |
1379 | /// \param SizeEmitter Callback to emit number of iterations for loop-based |
1380 | /// directives. |
1381 | virtual void emitTargetCall( |
1382 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
1383 | llvm::Function *OutlinedFn, llvm::Value *OutlinedFnID, const Expr *IfCond, |
1384 | llvm::PointerIntPair<const Expr *, 2, OpenMPDeviceClauseModifier> Device, |
1385 | llvm::function_ref<llvm::Value *(CodeGenFunction &CGF, |
1386 | const OMPLoopDirective &D)> |
1387 | SizeEmitter); |
1388 | |
1389 | /// Emit the target regions enclosed in \a GD function definition or |
1390 | /// the function itself in case it is a valid device function. Returns true if |
1391 | /// \a GD was dealt with successfully. |
1392 | /// \param GD Function to scan. |
1393 | virtual bool emitTargetFunctions(GlobalDecl GD); |
1394 | |
1395 | /// Emit the global variable if it is a valid device global variable. |
1396 | /// Returns true if \a GD was dealt with successfully. |
1397 | /// \param GD Variable declaration to emit. |
1398 | virtual bool emitTargetGlobalVariable(GlobalDecl GD); |
1399 | |
1400 | /// Checks if the provided global decl \a GD is a declare target variable and |
1401 | /// registers it when emitting code for the host. |
1402 | virtual void registerTargetGlobalVariable(const VarDecl *VD, |
1403 | llvm::Constant *Addr); |
1404 | |
1405 | /// Emit the global \a GD if it is meaningful for the target. Returns |
1406 | /// if it was emitted successfully. |
1407 | /// \param GD Global to scan. |
1408 | virtual bool emitTargetGlobal(GlobalDecl GD); |
1409 | |
1410 | /// Creates and returns a registration function for when at least one |
1411 | /// requires directives was used in the current module. |
1412 | llvm::Function *emitRequiresDirectiveRegFun(); |
1413 | |
1414 | /// Creates all the offload entries in the current compilation unit |
1415 | /// along with the associated metadata. |
1416 | void createOffloadEntriesAndInfoMetadata(); |
1417 | |
1418 | /// Emits code for teams call of the \a OutlinedFn with |
1419 | /// variables captured in a record which address is stored in \a |
1420 | /// CapturedStruct. |
1421 | /// \param OutlinedFn Outlined function to be run by team masters. Type of |
1422 | /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). |
1423 | /// \param CapturedVars A pointer to the record with the references to |
1424 | /// variables used in \a OutlinedFn function. |
1425 | /// |
1426 | virtual void emitTeamsCall(CodeGenFunction &CGF, |
1427 | const OMPExecutableDirective &D, |
1428 | SourceLocation Loc, llvm::Function *OutlinedFn, |
1429 | ArrayRef<llvm::Value *> CapturedVars); |
1430 | |
1431 | /// Emits call to void __kmpc_push_num_teams(ident_t *loc, kmp_int32 |
1432 | /// global_tid, kmp_int32 num_teams, kmp_int32 thread_limit) to generate code |
1433 | /// for num_teams clause. |
1434 | /// \param NumTeams An integer expression of teams. |
1435 | /// \param ThreadLimit An integer expression of threads. |
1436 | virtual void emitNumTeamsClause(CodeGenFunction &CGF, const Expr *NumTeams, |
1437 | const Expr *ThreadLimit, SourceLocation Loc); |
1438 | |
1439 | /// Emits call to void __kmpc_set_thread_limit(ident_t *loc, kmp_int32 |
1440 | /// global_tid, kmp_int32 thread_limit) to generate code for |
1441 | /// thread_limit clause on target directive |
1442 | /// \param ThreadLimit An integer expression of threads. |
1443 | virtual void emitThreadLimitClause(CodeGenFunction &CGF, |
1444 | const Expr *ThreadLimit, |
1445 | SourceLocation Loc); |
1446 | |
1447 | /// Struct that keeps all the relevant information that should be kept |
1448 | /// throughout a 'target data' region. |
1449 | class TargetDataInfo : public llvm::OpenMPIRBuilder::TargetDataInfo { |
1450 | public: |
1451 | explicit TargetDataInfo() : llvm::OpenMPIRBuilder::TargetDataInfo() {} |
1452 | explicit TargetDataInfo(bool RequiresDevicePointerInfo, |
1453 | bool SeparateBeginEndCalls) |
1454 | : llvm::OpenMPIRBuilder::TargetDataInfo(RequiresDevicePointerInfo, |
1455 | SeparateBeginEndCalls) {} |
1456 | /// Map between the a declaration of a capture and the corresponding new |
1457 | /// llvm address where the runtime returns the device pointers. |
1458 | llvm::DenseMap<const ValueDecl *, llvm::Value *> CaptureDeviceAddrMap; |
1459 | }; |
1460 | |
1461 | /// Emit the target data mapping code associated with \a D. |
1462 | /// \param D Directive to emit. |
1463 | /// \param IfCond Expression evaluated in if clause associated with the |
1464 | /// target directive, or null if no device clause is used. |
1465 | /// \param Device Expression evaluated in device clause associated with the |
1466 | /// target directive, or null if no device clause is used. |
1467 | /// \param Info A record used to store information that needs to be preserved |
1468 | /// until the region is closed. |
1469 | virtual void emitTargetDataCalls(CodeGenFunction &CGF, |
1470 | const OMPExecutableDirective &D, |
1471 | const Expr *IfCond, const Expr *Device, |
1472 | const RegionCodeGenTy &CodeGen, |
1473 | CGOpenMPRuntime::TargetDataInfo &Info); |
1474 | |
1475 | /// Emit the data mapping/movement code associated with the directive |
1476 | /// \a D that should be of the form 'target [{enter|exit} data | update]'. |
1477 | /// \param D Directive to emit. |
1478 | /// \param IfCond Expression evaluated in if clause associated with the target |
1479 | /// directive, or null if no if clause is used. |
1480 | /// \param Device Expression evaluated in device clause associated with the |
1481 | /// target directive, or null if no device clause is used. |
1482 | virtual void emitTargetDataStandAloneCall(CodeGenFunction &CGF, |
1483 | const OMPExecutableDirective &D, |
1484 | const Expr *IfCond, |
1485 | const Expr *Device); |
1486 | |
1487 | /// Marks function \a Fn with properly mangled versions of vector functions. |
1488 | /// \param FD Function marked as 'declare simd'. |
1489 | /// \param Fn LLVM function that must be marked with 'declare simd' |
1490 | /// attributes. |
1491 | virtual void emitDeclareSimdFunction(const FunctionDecl *FD, |
1492 | llvm::Function *Fn); |
1493 | |
1494 | /// Emit initialization for doacross loop nesting support. |
1495 | /// \param D Loop-based construct used in doacross nesting construct. |
1496 | virtual void emitDoacrossInit(CodeGenFunction &CGF, const OMPLoopDirective &D, |
1497 | ArrayRef<Expr *> NumIterations); |
1498 | |
1499 | /// Emit code for doacross ordered directive with 'depend' clause. |
1500 | /// \param C 'depend' clause with 'sink|source' dependency kind. |
1501 | virtual void emitDoacrossOrdered(CodeGenFunction &CGF, |
1502 | const OMPDependClause *C); |
1503 | |
1504 | /// Emit code for doacross ordered directive with 'doacross' clause. |
1505 | /// \param C 'doacross' clause with 'sink|source' dependence type. |
1506 | virtual void emitDoacrossOrdered(CodeGenFunction &CGF, |
1507 | const OMPDoacrossClause *C); |
1508 | |
1509 | /// Translates the native parameter of outlined function if this is required |
1510 | /// for target. |
1511 | /// \param FD Field decl from captured record for the parameter. |
1512 | /// \param NativeParam Parameter itself. |
1513 | virtual const VarDecl *translateParameter(const FieldDecl *FD, |
1514 | const VarDecl *NativeParam) const { |
1515 | return NativeParam; |
1516 | } |
1517 | |
1518 | /// Gets the address of the native argument basing on the address of the |
1519 | /// target-specific parameter. |
1520 | /// \param NativeParam Parameter itself. |
1521 | /// \param TargetParam Corresponding target-specific parameter. |
1522 | virtual Address getParameterAddress(CodeGenFunction &CGF, |
1523 | const VarDecl *NativeParam, |
1524 | const VarDecl *TargetParam) const; |
1525 | |
1526 | /// Choose default schedule type and chunk value for the |
1527 | /// dist_schedule clause. |
1528 | virtual void getDefaultDistScheduleAndChunk(CodeGenFunction &CGF, |
1529 | const OMPLoopDirective &S, OpenMPDistScheduleClauseKind &ScheduleKind, |
1530 | llvm::Value *&Chunk) const {} |
1531 | |
1532 | /// Choose default schedule type and chunk value for the |
1533 | /// schedule clause. |
1534 | virtual void getDefaultScheduleAndChunk(CodeGenFunction &CGF, |
1535 | const OMPLoopDirective &S, OpenMPScheduleClauseKind &ScheduleKind, |
1536 | const Expr *&ChunkExpr) const; |
1537 | |
1538 | /// Emits call of the outlined function with the provided arguments, |
1539 | /// translating these arguments to correct target-specific arguments. |
1540 | virtual void |
1541 | emitOutlinedFunctionCall(CodeGenFunction &CGF, SourceLocation Loc, |
1542 | llvm::FunctionCallee OutlinedFn, |
1543 | ArrayRef<llvm::Value *> Args = std::nullopt) const; |
1544 | |
1545 | /// Emits OpenMP-specific function prolog. |
1546 | /// Required for device constructs. |
1547 | virtual void emitFunctionProlog(CodeGenFunction &CGF, const Decl *D); |
1548 | |
1549 | /// Gets the OpenMP-specific address of the local variable. |
1550 | virtual Address getAddressOfLocalVariable(CodeGenFunction &CGF, |
1551 | const VarDecl *VD); |
1552 | |
1553 | /// Marks the declaration as already emitted for the device code and returns |
1554 | /// true, if it was marked already, and false, otherwise. |
1555 | bool markAsGlobalTarget(GlobalDecl GD); |
1556 | |
1557 | /// Emit deferred declare target variables marked for deferred emission. |
1558 | void emitDeferredTargetDecls() const; |
1559 | |
1560 | /// Adjust some parameters for the target-based directives, like addresses of |
1561 | /// the variables captured by reference in lambdas. |
1562 | virtual void |
1563 | adjustTargetSpecificDataForLambdas(CodeGenFunction &CGF, |
1564 | const OMPExecutableDirective &D) const; |
1565 | |
1566 | /// Perform check on requires decl to ensure that target architecture |
1567 | /// supports unified addressing |
1568 | virtual void processRequiresDirective(const OMPRequiresDecl *D); |
1569 | |
1570 | /// Gets default memory ordering as specified in requires directive. |
1571 | llvm::AtomicOrdering getDefaultMemoryOrdering() const; |
1572 | |
1573 | /// Checks if the variable has associated OMPAllocateDeclAttr attribute with |
1574 | /// the predefined allocator and translates it into the corresponding address |
1575 | /// space. |
1576 | virtual bool hasAllocateAttributeForGlobalVar(const VarDecl *VD, LangAS &AS); |
1577 | |
1578 | /// Return whether the unified_shared_memory has been specified. |
1579 | bool hasRequiresUnifiedSharedMemory() const; |
1580 | |
1581 | /// Checks if the \p VD variable is marked as nontemporal declaration in |
1582 | /// current context. |
1583 | bool isNontemporalDecl(const ValueDecl *VD) const; |
1584 | |
1585 | /// Create specialized alloca to handle lastprivate conditionals. |
1586 | Address emitLastprivateConditionalInit(CodeGenFunction &CGF, |
1587 | const VarDecl *VD); |
1588 | |
1589 | /// Checks if the provided \p LVal is lastprivate conditional and emits the |
1590 | /// code to update the value of the original variable. |
1591 | /// \code |
1592 | /// lastprivate(conditional: a) |
1593 | /// ... |
1594 | /// <type> a; |
1595 | /// lp_a = ...; |
1596 | /// #pragma omp critical(a) |
1597 | /// if (last_iv_a <= iv) { |
1598 | /// last_iv_a = iv; |
1599 | /// global_a = lp_a; |
1600 | /// } |
1601 | /// \endcode |
1602 | virtual void checkAndEmitLastprivateConditional(CodeGenFunction &CGF, |
1603 | const Expr *LHS); |
1604 | |
1605 | /// Checks if the lastprivate conditional was updated in inner region and |
1606 | /// writes the value. |
1607 | /// \code |
1608 | /// lastprivate(conditional: a) |
1609 | /// ... |
1610 | /// <type> a;bool Fired = false; |
1611 | /// #pragma omp ... shared(a) |
1612 | /// { |
1613 | /// lp_a = ...; |
1614 | /// Fired = true; |
1615 | /// } |
1616 | /// if (Fired) { |
1617 | /// #pragma omp critical(a) |
1618 | /// if (last_iv_a <= iv) { |
1619 | /// last_iv_a = iv; |
1620 | /// global_a = lp_a; |
1621 | /// } |
1622 | /// Fired = false; |
1623 | /// } |
1624 | /// \endcode |
1625 | virtual void checkAndEmitSharedLastprivateConditional( |
1626 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
1627 | const llvm::DenseSet<CanonicalDeclPtr<const VarDecl>> &IgnoredDecls); |
1628 | |
1629 | /// Gets the address of the global copy used for lastprivate conditional |
1630 | /// update, if any. |
1631 | /// \param PrivLVal LValue for the private copy. |
1632 | /// \param VD Original lastprivate declaration. |
1633 | virtual void emitLastprivateConditionalFinalUpdate(CodeGenFunction &CGF, |
1634 | LValue PrivLVal, |
1635 | const VarDecl *VD, |
1636 | SourceLocation Loc); |
1637 | |
1638 | /// Emits list of dependecies based on the provided data (array of |
1639 | /// dependence/expression pairs). |
1640 | /// \returns Pointer to the first element of the array casted to VoidPtr type. |
1641 | std::pair<llvm::Value *, Address> |
1642 | emitDependClause(CodeGenFunction &CGF, |
1643 | ArrayRef<OMPTaskDataTy::DependData> Dependencies, |
1644 | SourceLocation Loc); |
1645 | |
1646 | /// Emits list of dependecies based on the provided data (array of |
1647 | /// dependence/expression pairs) for depobj construct. In this case, the |
1648 | /// variable is allocated in dynamically. \returns Pointer to the first |
1649 | /// element of the array casted to VoidPtr type. |
1650 | Address emitDepobjDependClause(CodeGenFunction &CGF, |
1651 | const OMPTaskDataTy::DependData &Dependencies, |
1652 | SourceLocation Loc); |
1653 | |
1654 | /// Emits the code to destroy the dependency object provided in depobj |
1655 | /// directive. |
1656 | void emitDestroyClause(CodeGenFunction &CGF, LValue DepobjLVal, |
1657 | SourceLocation Loc); |
1658 | |
1659 | /// Updates the dependency kind in the specified depobj object. |
1660 | /// \param DepobjLVal LValue for the main depobj object. |
1661 | /// \param NewDepKind New dependency kind. |
1662 | void emitUpdateClause(CodeGenFunction &CGF, LValue DepobjLVal, |
1663 | OpenMPDependClauseKind NewDepKind, SourceLocation Loc); |
1664 | |
1665 | /// Initializes user defined allocators specified in the uses_allocators |
1666 | /// clauses. |
1667 | void emitUsesAllocatorsInit(CodeGenFunction &CGF, const Expr *Allocator, |
1668 | const Expr *AllocatorTraits); |
1669 | |
1670 | /// Destroys user defined allocators specified in the uses_allocators clause. |
1671 | void emitUsesAllocatorsFini(CodeGenFunction &CGF, const Expr *Allocator); |
1672 | |
1673 | /// Returns true if the variable is a local variable in untied task. |
1674 | bool isLocalVarInUntiedTask(CodeGenFunction &CGF, const VarDecl *VD) const; |
1675 | }; |
1676 | |
1677 | /// Class supports emissionof SIMD-only code. |
1678 | class CGOpenMPSIMDRuntime final : public CGOpenMPRuntime { |
1679 | public: |
1680 | explicit CGOpenMPSIMDRuntime(CodeGenModule &CGM) : CGOpenMPRuntime(CGM) {} |
1681 | ~CGOpenMPSIMDRuntime() override {} |
1682 | |
1683 | /// Emits outlined function for the specified OpenMP parallel directive |
1684 | /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID, |
1685 | /// kmp_int32 BoundID, struct context_vars*). |
1686 | /// \param CGF Reference to current CodeGenFunction. |
1687 | /// \param D OpenMP directive. |
1688 | /// \param ThreadIDVar Variable for thread id in the current OpenMP region. |
1689 | /// \param InnermostKind Kind of innermost directive (for simple directives it |
1690 | /// is a directive itself, for combined - its innermost directive). |
1691 | /// \param CodeGen Code generation sequence for the \a D directive. |
1692 | llvm::Function *emitParallelOutlinedFunction( |
1693 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
1694 | const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind, |
1695 | const RegionCodeGenTy &CodeGen) override; |
1696 | |
1697 | /// Emits outlined function for the specified OpenMP teams directive |
1698 | /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID, |
1699 | /// kmp_int32 BoundID, struct context_vars*). |
1700 | /// \param CGF Reference to current CodeGenFunction. |
1701 | /// \param D OpenMP directive. |
1702 | /// \param ThreadIDVar Variable for thread id in the current OpenMP region. |
1703 | /// \param InnermostKind Kind of innermost directive (for simple directives it |
1704 | /// is a directive itself, for combined - its innermost directive). |
1705 | /// \param CodeGen Code generation sequence for the \a D directive. |
1706 | llvm::Function *emitTeamsOutlinedFunction( |
1707 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
1708 | const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind, |
1709 | const RegionCodeGenTy &CodeGen) override; |
1710 | |
1711 | /// Emits outlined function for the OpenMP task directive \a D. This |
1712 | /// outlined function has type void(*)(kmp_int32 ThreadID, struct task_t* |
1713 | /// TaskT). |
1714 | /// \param D OpenMP directive. |
1715 | /// \param ThreadIDVar Variable for thread id in the current OpenMP region. |
1716 | /// \param PartIDVar Variable for partition id in the current OpenMP untied |
1717 | /// task region. |
1718 | /// \param TaskTVar Variable for task_t argument. |
1719 | /// \param InnermostKind Kind of innermost directive (for simple directives it |
1720 | /// is a directive itself, for combined - its innermost directive). |
1721 | /// \param CodeGen Code generation sequence for the \a D directive. |
1722 | /// \param Tied true if task is generated for tied task, false otherwise. |
1723 | /// \param NumberOfParts Number of parts in untied task. Ignored for tied |
1724 | /// tasks. |
1725 | /// |
1726 | llvm::Function *emitTaskOutlinedFunction( |
1727 | const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, |
1728 | const VarDecl *PartIDVar, const VarDecl *TaskTVar, |
1729 | OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen, |
1730 | bool Tied, unsigned &NumberOfParts) override; |
1731 | |
1732 | /// Emits code for parallel or serial call of the \a OutlinedFn with |
1733 | /// variables captured in a record which address is stored in \a |
1734 | /// CapturedStruct. |
1735 | /// \param OutlinedFn Outlined function to be run in parallel threads. Type of |
1736 | /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). |
1737 | /// \param CapturedVars A pointer to the record with the references to |
1738 | /// variables used in \a OutlinedFn function. |
1739 | /// \param IfCond Condition in the associated 'if' clause, if it was |
1740 | /// specified, nullptr otherwise. |
1741 | /// \param NumThreads The value corresponding to the num_threads clause, if |
1742 | /// any, or nullptr. |
1743 | /// |
1744 | void emitParallelCall(CodeGenFunction &CGF, SourceLocation Loc, |
1745 | llvm::Function *OutlinedFn, |
1746 | ArrayRef<llvm::Value *> CapturedVars, |
1747 | const Expr *IfCond, llvm::Value *NumThreads) override; |
1748 | |
1749 | /// Emits a critical region. |
1750 | /// \param CriticalName Name of the critical region. |
1751 | /// \param CriticalOpGen Generator for the statement associated with the given |
1752 | /// critical region. |
1753 | /// \param Hint Value of the 'hint' clause (optional). |
1754 | void emitCriticalRegion(CodeGenFunction &CGF, StringRef CriticalName, |
1755 | const RegionCodeGenTy &CriticalOpGen, |
1756 | SourceLocation Loc, |
1757 | const Expr *Hint = nullptr) override; |
1758 | |
1759 | /// Emits a master region. |
1760 | /// \param MasterOpGen Generator for the statement associated with the given |
1761 | /// master region. |
1762 | void emitMasterRegion(CodeGenFunction &CGF, |
1763 | const RegionCodeGenTy &MasterOpGen, |
1764 | SourceLocation Loc) override; |
1765 | |
1766 | /// Emits a masked region. |
1767 | /// \param MaskedOpGen Generator for the statement associated with the given |
1768 | /// masked region. |
1769 | void emitMaskedRegion(CodeGenFunction &CGF, |
1770 | const RegionCodeGenTy &MaskedOpGen, SourceLocation Loc, |
1771 | const Expr *Filter = nullptr) override; |
1772 | |
1773 | /// Emits a masked region. |
1774 | /// \param MaskedOpGen Generator for the statement associated with the given |
1775 | /// masked region. |
1776 | |
1777 | /// Emits code for a taskyield directive. |
1778 | void emitTaskyieldCall(CodeGenFunction &CGF, SourceLocation Loc) override; |
1779 | |
1780 | /// Emit a taskgroup region. |
1781 | /// \param TaskgroupOpGen Generator for the statement associated with the |
1782 | /// given taskgroup region. |
1783 | void emitTaskgroupRegion(CodeGenFunction &CGF, |
1784 | const RegionCodeGenTy &TaskgroupOpGen, |
1785 | SourceLocation Loc) override; |
1786 | |
1787 | /// Emits a single region. |
1788 | /// \param SingleOpGen Generator for the statement associated with the given |
1789 | /// single region. |
1790 | void emitSingleRegion(CodeGenFunction &CGF, |
1791 | const RegionCodeGenTy &SingleOpGen, SourceLocation Loc, |
1792 | ArrayRef<const Expr *> CopyprivateVars, |
1793 | ArrayRef<const Expr *> DestExprs, |
1794 | ArrayRef<const Expr *> SrcExprs, |
1795 | ArrayRef<const Expr *> AssignmentOps) override; |
1796 | |
1797 | /// Emit an ordered region. |
1798 | /// \param OrderedOpGen Generator for the statement associated with the given |
1799 | /// ordered region. |
1800 | void emitOrderedRegion(CodeGenFunction &CGF, |
1801 | const RegionCodeGenTy &OrderedOpGen, |
1802 | SourceLocation Loc, bool IsThreads) override; |
1803 | |
1804 | /// Emit an implicit/explicit barrier for OpenMP threads. |
1805 | /// \param Kind Directive for which this implicit barrier call must be |
1806 | /// generated. Must be OMPD_barrier for explicit barrier generation. |
1807 | /// \param EmitChecks true if need to emit checks for cancellation barriers. |
1808 | /// \param ForceSimpleCall true simple barrier call must be emitted, false if |
1809 | /// runtime class decides which one to emit (simple or with cancellation |
1810 | /// checks). |
1811 | /// |
1812 | void emitBarrierCall(CodeGenFunction &CGF, SourceLocation Loc, |
1813 | OpenMPDirectiveKind Kind, bool EmitChecks = true, |
1814 | bool ForceSimpleCall = false) override; |
1815 | |
1816 | /// This is used for non static scheduled types and when the ordered |
1817 | /// clause is present on the loop construct. |
1818 | /// Depending on the loop schedule, it is necessary to call some runtime |
1819 | /// routine before start of the OpenMP loop to get the loop upper / lower |
1820 | /// bounds \a LB and \a UB and stride \a ST. |
1821 | /// |
1822 | /// \param CGF Reference to current CodeGenFunction. |
1823 | /// \param Loc Clang source location. |
1824 | /// \param ScheduleKind Schedule kind, specified by the 'schedule' clause. |
1825 | /// \param IVSize Size of the iteration variable in bits. |
1826 | /// \param IVSigned Sign of the iteration variable. |
1827 | /// \param Ordered true if loop is ordered, false otherwise. |
1828 | /// \param DispatchValues struct containing llvm values for lower bound, upper |
1829 | /// bound, and chunk expression. |
1830 | /// For the default (nullptr) value, the chunk 1 will be used. |
1831 | /// |
1832 | void emitForDispatchInit(CodeGenFunction &CGF, SourceLocation Loc, |
1833 | const OpenMPScheduleTy &ScheduleKind, |
1834 | unsigned IVSize, bool IVSigned, bool Ordered, |
1835 | const DispatchRTInput &DispatchValues) override; |
1836 | |
1837 | /// Call the appropriate runtime routine to initialize it before start |
1838 | /// of loop. |
1839 | /// |
1840 | /// This is used only in case of static schedule, when the user did not |
1841 | /// specify a ordered clause on the loop construct. |
1842 | /// Depending on the loop schedule, it is necessary to call some runtime |
1843 | /// routine before start of the OpenMP loop to get the loop upper / lower |
1844 | /// bounds LB and UB and stride ST. |
1845 | /// |
1846 | /// \param CGF Reference to current CodeGenFunction. |
1847 | /// \param Loc Clang source location. |
1848 | /// \param DKind Kind of the directive. |
1849 | /// \param ScheduleKind Schedule kind, specified by the 'schedule' clause. |
1850 | /// \param Values Input arguments for the construct. |
1851 | /// |
1852 | void emitForStaticInit(CodeGenFunction &CGF, SourceLocation Loc, |
1853 | OpenMPDirectiveKind DKind, |
1854 | const OpenMPScheduleTy &ScheduleKind, |
1855 | const StaticRTInput &Values) override; |
1856 | |
1857 | /// |
1858 | /// \param CGF Reference to current CodeGenFunction. |
1859 | /// \param Loc Clang source location. |
1860 | /// \param SchedKind Schedule kind, specified by the 'dist_schedule' clause. |
1861 | /// \param Values Input arguments for the construct. |
1862 | /// |
1863 | void emitDistributeStaticInit(CodeGenFunction &CGF, SourceLocation Loc, |
1864 | OpenMPDistScheduleClauseKind SchedKind, |
1865 | const StaticRTInput &Values) override; |
1866 | |
1867 | /// Call the appropriate runtime routine to notify that we finished |
1868 | /// iteration of the ordered loop with the dynamic scheduling. |
1869 | /// |
1870 | /// \param CGF Reference to current CodeGenFunction. |
1871 | /// \param Loc Clang source location. |
1872 | /// \param IVSize Size of the iteration variable in bits. |
1873 | /// \param IVSigned Sign of the iteration variable. |
1874 | /// |
1875 | void emitForOrderedIterationEnd(CodeGenFunction &CGF, SourceLocation Loc, |
1876 | unsigned IVSize, bool IVSigned) override; |
1877 | |
1878 | /// Call the appropriate runtime routine to notify that we finished |
1879 | /// all the work with current loop. |
1880 | /// |
1881 | /// \param CGF Reference to current CodeGenFunction. |
1882 | /// \param Loc Clang source location. |
1883 | /// \param DKind Kind of the directive for which the static finish is emitted. |
1884 | /// |
1885 | void emitForStaticFinish(CodeGenFunction &CGF, SourceLocation Loc, |
1886 | OpenMPDirectiveKind DKind) override; |
1887 | |
1888 | /// Call __kmpc_dispatch_next( |
1889 | /// ident_t *loc, kmp_int32 tid, kmp_int32 *p_lastiter, |
1890 | /// kmp_int[32|64] *p_lower, kmp_int[32|64] *p_upper, |
1891 | /// kmp_int[32|64] *p_stride); |
1892 | /// \param IVSize Size of the iteration variable in bits. |
1893 | /// \param IVSigned Sign of the iteration variable. |
1894 | /// \param IL Address of the output variable in which the flag of the |
1895 | /// last iteration is returned. |
1896 | /// \param LB Address of the output variable in which the lower iteration |
1897 | /// number is returned. |
1898 | /// \param UB Address of the output variable in which the upper iteration |
1899 | /// number is returned. |
1900 | /// \param ST Address of the output variable in which the stride value is |
1901 | /// returned. |
1902 | llvm::Value *emitForNext(CodeGenFunction &CGF, SourceLocation Loc, |
1903 | unsigned IVSize, bool IVSigned, Address IL, |
1904 | Address LB, Address UB, Address ST) override; |
1905 | |
1906 | /// Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32 |
1907 | /// global_tid, kmp_int32 num_threads) to generate code for 'num_threads' |
1908 | /// clause. |
1909 | /// \param NumThreads An integer value of threads. |
1910 | void emitNumThreadsClause(CodeGenFunction &CGF, llvm::Value *NumThreads, |
1911 | SourceLocation Loc) override; |
1912 | |
1913 | /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 |
1914 | /// global_tid, int proc_bind) to generate code for 'proc_bind' clause. |
1915 | void emitProcBindClause(CodeGenFunction &CGF, |
1916 | llvm::omp::ProcBindKind ProcBind, |
1917 | SourceLocation Loc) override; |
1918 | |
1919 | /// Returns address of the threadprivate variable for the current |
1920 | /// thread. |
1921 | /// \param VD Threadprivate variable. |
1922 | /// \param VDAddr Address of the global variable \a VD. |
1923 | /// \param Loc Location of the reference to threadprivate var. |
1924 | /// \return Address of the threadprivate variable for the current thread. |
1925 | Address getAddrOfThreadPrivate(CodeGenFunction &CGF, const VarDecl *VD, |
1926 | Address VDAddr, SourceLocation Loc) override; |
1927 | |
1928 | /// Emit a code for initialization of threadprivate variable. It emits |
1929 | /// a call to runtime library which adds initial value to the newly created |
1930 | /// threadprivate variable (if it is not constant) and registers destructor |
1931 | /// for the variable (if any). |
1932 | /// \param VD Threadprivate variable. |
1933 | /// \param VDAddr Address of the global variable \a VD. |
1934 | /// \param Loc Location of threadprivate declaration. |
1935 | /// \param PerformInit true if initialization expression is not constant. |
1936 | llvm::Function * |
1937 | emitThreadPrivateVarDefinition(const VarDecl *VD, Address VDAddr, |
1938 | SourceLocation Loc, bool PerformInit, |
1939 | CodeGenFunction *CGF = nullptr) override; |
1940 | |
1941 | /// Creates artificial threadprivate variable with name \p Name and type \p |
1942 | /// VarType. |
1943 | /// \param VarType Type of the artificial threadprivate variable. |
1944 | /// \param Name Name of the artificial threadprivate variable. |
1945 | Address getAddrOfArtificialThreadPrivate(CodeGenFunction &CGF, |
1946 | QualType VarType, |
1947 | StringRef Name) override; |
1948 | |
1949 | /// Emit flush of the variables specified in 'omp flush' directive. |
1950 | /// \param Vars List of variables to flush. |
1951 | void emitFlush(CodeGenFunction &CGF, ArrayRef<const Expr *> Vars, |
1952 | SourceLocation Loc, llvm::AtomicOrdering AO) override; |
1953 | |
1954 | /// Emit task region for the task directive. The task region is |
1955 | /// emitted in several steps: |
1956 | /// 1. Emit a call to kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 |
1957 | /// gtid, kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, |
1958 | /// kmp_routine_entry_t *task_entry). Here task_entry is a pointer to the |
1959 | /// function: |
1960 | /// kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) { |
1961 | /// TaskFunction(gtid, tt->part_id, tt->shareds); |
1962 | /// return 0; |
1963 | /// } |
1964 | /// 2. Copy a list of shared variables to field shareds of the resulting |
1965 | /// structure kmp_task_t returned by the previous call (if any). |
1966 | /// 3. Copy a pointer to destructions function to field destructions of the |
1967 | /// resulting structure kmp_task_t. |
1968 | /// 4. Emit a call to kmp_int32 __kmpc_omp_task(ident_t *, kmp_int32 gtid, |
1969 | /// kmp_task_t *new_task), where new_task is a resulting structure from |
1970 | /// previous items. |
1971 | /// \param D Current task directive. |
1972 | /// \param TaskFunction An LLVM function with type void (*)(i32 /*gtid*/, i32 |
1973 | /// /*part_id*/, captured_struct */*__context*/); |
1974 | /// \param SharedsTy A type which contains references the shared variables. |
1975 | /// \param Shareds Context with the list of shared variables from the \p |
1976 | /// TaskFunction. |
1977 | /// \param IfCond Not a nullptr if 'if' clause was specified, nullptr |
1978 | /// otherwise. |
1979 | /// \param Data Additional data for task generation like tiednsee, final |
1980 | /// state, list of privates etc. |
1981 | void emitTaskCall(CodeGenFunction &CGF, SourceLocation Loc, |
1982 | const OMPExecutableDirective &D, |
1983 | llvm::Function *TaskFunction, QualType SharedsTy, |
1984 | Address Shareds, const Expr *IfCond, |
1985 | const OMPTaskDataTy &Data) override; |
1986 | |
1987 | /// Emit task region for the taskloop directive. The taskloop region is |
1988 | /// emitted in several steps: |
1989 | /// 1. Emit a call to kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 |
1990 | /// gtid, kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, |
1991 | /// kmp_routine_entry_t *task_entry). Here task_entry is a pointer to the |
1992 | /// function: |
1993 | /// kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) { |
1994 | /// TaskFunction(gtid, tt->part_id, tt->shareds); |
1995 | /// return 0; |
1996 | /// } |
1997 | /// 2. Copy a list of shared variables to field shareds of the resulting |
1998 | /// structure kmp_task_t returned by the previous call (if any). |
1999 | /// 3. Copy a pointer to destructions function to field destructions of the |
2000 | /// resulting structure kmp_task_t. |
2001 | /// 4. Emit a call to void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t |
2002 | /// *task, int if_val, kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int |
2003 | /// nogroup, int sched, kmp_uint64 grainsize, void *task_dup ), where new_task |
2004 | /// is a resulting structure from |
2005 | /// previous items. |
2006 | /// \param D Current task directive. |
2007 | /// \param TaskFunction An LLVM function with type void (*)(i32 /*gtid*/, i32 |
2008 | /// /*part_id*/, captured_struct */*__context*/); |
2009 | /// \param SharedsTy A type which contains references the shared variables. |
2010 | /// \param Shareds Context with the list of shared variables from the \p |
2011 | /// TaskFunction. |
2012 | /// \param IfCond Not a nullptr if 'if' clause was specified, nullptr |
2013 | /// otherwise. |
2014 | /// \param Data Additional data for task generation like tiednsee, final |
2015 | /// state, list of privates etc. |
2016 | void emitTaskLoopCall(CodeGenFunction &CGF, SourceLocation Loc, |
2017 | const OMPLoopDirective &D, llvm::Function *TaskFunction, |
2018 | QualType SharedsTy, Address Shareds, const Expr *IfCond, |
2019 | const OMPTaskDataTy &Data) override; |
2020 | |
2021 | /// Emit a code for reduction clause. Next code should be emitted for |
2022 | /// reduction: |
2023 | /// \code |
2024 | /// |
2025 | /// static kmp_critical_name lock = { 0 }; |
2026 | /// |
2027 | /// void reduce_func(void *lhs[<n>], void *rhs[<n>]) { |
2028 | /// ... |
2029 | /// *(Type<i>*)lhs[i] = RedOp<i>(*(Type<i>*)lhs[i], *(Type<i>*)rhs[i]); |
2030 | /// ... |
2031 | /// } |
2032 | /// |
2033 | /// ... |
2034 | /// void *RedList[<n>] = {&<RHSExprs>[0], ..., &<RHSExprs>[<n>-1]}; |
2035 | /// switch (__kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), |
2036 | /// RedList, reduce_func, &<lock>)) { |
2037 | /// case 1: |
2038 | /// ... |
2039 | /// <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); |
2040 | /// ... |
2041 | /// __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); |
2042 | /// break; |
2043 | /// case 2: |
2044 | /// ... |
2045 | /// Atomic(<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i])); |
2046 | /// ... |
2047 | /// break; |
2048 | /// default:; |
2049 | /// } |
2050 | /// \endcode |
2051 | /// |
2052 | /// \param Privates List of private copies for original reduction arguments. |
2053 | /// \param LHSExprs List of LHS in \a ReductionOps reduction operations. |
2054 | /// \param RHSExprs List of RHS in \a ReductionOps reduction operations. |
2055 | /// \param ReductionOps List of reduction operations in form 'LHS binop RHS' |
2056 | /// or 'operator binop(LHS, RHS)'. |
2057 | /// \param Options List of options for reduction codegen: |
2058 | /// WithNowait true if parent directive has also nowait clause, false |
2059 | /// otherwise. |
2060 | /// SimpleReduction Emit reduction operation only. Used for omp simd |
2061 | /// directive on the host. |
2062 | /// ReductionKind The kind of reduction to perform. |
2063 | void emitReduction(CodeGenFunction &CGF, SourceLocation Loc, |
2064 | ArrayRef<const Expr *> Privates, |
2065 | ArrayRef<const Expr *> LHSExprs, |
2066 | ArrayRef<const Expr *> RHSExprs, |
2067 | ArrayRef<const Expr *> ReductionOps, |
2068 | ReductionOptionsTy Options) override; |
2069 | |
2070 | /// Emit a code for initialization of task reduction clause. Next code |
2071 | /// should be emitted for reduction: |
2072 | /// \code |
2073 | /// |
2074 | /// _taskred_item_t red_data[n]; |
2075 | /// ... |
2076 | /// red_data[i].shar = &shareds[i]; |
2077 | /// red_data[i].orig = &origs[i]; |
2078 | /// red_data[i].size = sizeof(origs[i]); |
2079 | /// red_data[i].f_init = (void*)RedInit<i>; |
2080 | /// red_data[i].f_fini = (void*)RedDest<i>; |
2081 | /// red_data[i].f_comb = (void*)RedOp<i>; |
2082 | /// red_data[i].flags = <Flag_i>; |
2083 | /// ... |
2084 | /// void* tg1 = __kmpc_taskred_init(gtid, n, red_data); |
2085 | /// \endcode |
2086 | /// For reduction clause with task modifier it emits the next call: |
2087 | /// \code |
2088 | /// |
2089 | /// _taskred_item_t red_data[n]; |
2090 | /// ... |
2091 | /// red_data[i].shar = &shareds[i]; |
2092 | /// red_data[i].orig = &origs[i]; |
2093 | /// red_data[i].size = sizeof(origs[i]); |
2094 | /// red_data[i].f_init = (void*)RedInit<i>; |
2095 | /// red_data[i].f_fini = (void*)RedDest<i>; |
2096 | /// red_data[i].f_comb = (void*)RedOp<i>; |
2097 | /// red_data[i].flags = <Flag_i>; |
2098 | /// ... |
2099 | /// void* tg1 = __kmpc_taskred_modifier_init(loc, gtid, is_worksharing, n, |
2100 | /// red_data); |
2101 | /// \endcode |
2102 | /// \param LHSExprs List of LHS in \a Data.ReductionOps reduction operations. |
2103 | /// \param RHSExprs List of RHS in \a Data.ReductionOps reduction operations. |
2104 | /// \param Data Additional data for task generation like tiedness, final |
2105 | /// state, list of privates, reductions etc. |
2106 | llvm::Value *emitTaskReductionInit(CodeGenFunction &CGF, SourceLocation Loc, |
2107 | ArrayRef<const Expr *> LHSExprs, |
2108 | ArrayRef<const Expr *> RHSExprs, |
2109 | const OMPTaskDataTy &Data) override; |
2110 | |
2111 | /// Emits the following code for reduction clause with task modifier: |
2112 | /// \code |
2113 | /// __kmpc_task_reduction_modifier_fini(loc, gtid, is_worksharing); |
2114 | /// \endcode |
2115 | void emitTaskReductionFini(CodeGenFunction &CGF, SourceLocation Loc, |
2116 | bool IsWorksharingReduction) override; |
2117 | |
2118 | /// Required to resolve existing problems in the runtime. Emits threadprivate |
2119 | /// variables to store the size of the VLAs/array sections for |
2120 | /// initializer/combiner/finalizer functions + emits threadprivate variable to |
2121 | /// store the pointer to the original reduction item for the custom |
2122 | /// initializer defined by declare reduction construct. |
2123 | /// \param RCG Allows to reuse an existing data for the reductions. |
2124 | /// \param N Reduction item for which fixups must be emitted. |
2125 | void emitTaskReductionFixups(CodeGenFunction &CGF, SourceLocation Loc, |
2126 | ReductionCodeGen &RCG, unsigned N) override; |
2127 | |
2128 | /// Get the address of `void *` type of the privatue copy of the reduction |
2129 | /// item specified by the \p SharedLVal. |
2130 | /// \param ReductionsPtr Pointer to the reduction data returned by the |
2131 | /// emitTaskReductionInit function. |
2132 | /// \param SharedLVal Address of the original reduction item. |
2133 | Address getTaskReductionItem(CodeGenFunction &CGF, SourceLocation Loc, |
2134 | llvm::Value *ReductionsPtr, |
2135 | LValue SharedLVal) override; |
2136 | |
2137 | /// Emit code for 'taskwait' directive. |
2138 | void emitTaskwaitCall(CodeGenFunction &CGF, SourceLocation Loc, |
2139 | const OMPTaskDataTy &Data) override; |
2140 | |
2141 | /// Emit code for 'cancellation point' construct. |
2142 | /// \param CancelRegion Region kind for which the cancellation point must be |
2143 | /// emitted. |
2144 | /// |
2145 | void emitCancellationPointCall(CodeGenFunction &CGF, SourceLocation Loc, |
2146 | OpenMPDirectiveKind CancelRegion) override; |
2147 | |
2148 | /// Emit code for 'cancel' construct. |
2149 | /// \param IfCond Condition in the associated 'if' clause, if it was |
2150 | /// specified, nullptr otherwise. |
2151 | /// \param CancelRegion Region kind for which the cancel must be emitted. |
2152 | /// |
2153 | void emitCancelCall(CodeGenFunction &CGF, SourceLocation Loc, |
2154 | const Expr *IfCond, |
2155 | OpenMPDirectiveKind CancelRegion) override; |
2156 | |
2157 | /// Emit outilined function for 'target' directive. |
2158 | /// \param D Directive to emit. |
2159 | /// \param ParentName Name of the function that encloses the target region. |
2160 | /// \param OutlinedFn Outlined function value to be defined by this call. |
2161 | /// \param OutlinedFnID Outlined function ID value to be defined by this call. |
2162 | /// \param IsOffloadEntry True if the outlined function is an offload entry. |
2163 | /// \param CodeGen Code generation sequence for the \a D directive. |
2164 | /// An outlined function may not be an entry if, e.g. the if clause always |
2165 | /// evaluates to false. |
2166 | void emitTargetOutlinedFunction(const OMPExecutableDirective &D, |
2167 | StringRef ParentName, |
2168 | llvm::Function *&OutlinedFn, |
2169 | llvm::Constant *&OutlinedFnID, |
2170 | bool IsOffloadEntry, |
2171 | const RegionCodeGenTy &CodeGen) override; |
2172 | |
2173 | /// Emit the target offloading code associated with \a D. The emitted |
2174 | /// code attempts offloading the execution to the device, an the event of |
2175 | /// a failure it executes the host version outlined in \a OutlinedFn. |
2176 | /// \param D Directive to emit. |
2177 | /// \param OutlinedFn Host version of the code to be offloaded. |
2178 | /// \param OutlinedFnID ID of host version of the code to be offloaded. |
2179 | /// \param IfCond Expression evaluated in if clause associated with the target |
2180 | /// directive, or null if no if clause is used. |
2181 | /// \param Device Expression evaluated in device clause associated with the |
2182 | /// target directive, or null if no device clause is used and device modifier. |
2183 | void emitTargetCall( |
2184 | CodeGenFunction &CGF, const OMPExecutableDirective &D, |
2185 | llvm::Function *OutlinedFn, llvm::Value *OutlinedFnID, const Expr *IfCond, |
2186 | llvm::PointerIntPair<const Expr *, 2, OpenMPDeviceClauseModifier> Device, |
2187 | llvm::function_ref<llvm::Value *(CodeGenFunction &CGF, |
2188 | const OMPLoopDirective &D)> |
2189 | SizeEmitter) override; |
2190 | |
2191 | /// Emit the target regions enclosed in \a GD function definition or |
2192 | /// the function itself in case it is a valid device function. Returns true if |
2193 | /// \a GD was dealt with successfully. |
2194 | /// \param GD Function to scan. |
2195 | bool emitTargetFunctions(GlobalDecl GD) override; |
2196 | |
2197 | /// Emit the global variable if it is a valid device global variable. |
2198 | /// Returns true if \a GD was dealt with successfully. |
2199 | /// \param GD Variable declaration to emit. |
2200 | bool emitTargetGlobalVariable(GlobalDecl GD) override; |
2201 | |
2202 | /// Emit the global \a GD if it is meaningful for the target. Returns |
2203 | /// if it was emitted successfully. |
2204 | /// \param GD Global to scan. |
2205 | bool emitTargetGlobal(GlobalDecl GD) override; |
2206 | |
2207 | /// Emits code for teams call of the \a OutlinedFn with |
2208 | /// variables captured in a record which address is stored in \a |
2209 | /// CapturedStruct. |
2210 | /// \param OutlinedFn Outlined function to be run by team masters. Type of |
2211 | /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*). |
2212 | /// \param CapturedVars A pointer to the record with the references to |
2213 | /// variables used in \a OutlinedFn function. |
2214 | /// |
2215 | void emitTeamsCall(CodeGenFunction &CGF, const OMPExecutableDirective &D, |
2216 | SourceLocation Loc, llvm::Function *OutlinedFn, |
2217 | ArrayRef<llvm::Value *> CapturedVars) override; |
2218 | |
2219 | /// Emits call to void __kmpc_push_num_teams(ident_t *loc, kmp_int32 |
2220 | /// global_tid, kmp_int32 num_teams, kmp_int32 thread_limit) to generate code |
2221 | /// for num_teams clause. |
2222 | /// \param NumTeams An integer expression of teams. |
2223 | /// \param ThreadLimit An integer expression of threads. |
2224 | void emitNumTeamsClause(CodeGenFunction &CGF, const Expr *NumTeams, |
2225 | const Expr *ThreadLimit, SourceLocation Loc) override; |
2226 | |
2227 | /// Emit the target data mapping code associated with \a D. |
2228 | /// \param D Directive to emit. |
2229 | /// \param IfCond Expression evaluated in if clause associated with the |
2230 | /// target directive, or null if no device clause is used. |
2231 | /// \param Device Expression evaluated in device clause associated with the |
2232 | /// target directive, or null if no device clause is used. |
2233 | /// \param Info A record used to store information that needs to be preserved |
2234 | /// until the region is closed. |
2235 | void emitTargetDataCalls(CodeGenFunction &CGF, |
2236 | const OMPExecutableDirective &D, const Expr *IfCond, |
2237 | const Expr *Device, const RegionCodeGenTy &CodeGen, |
2238 | CGOpenMPRuntime::TargetDataInfo &Info) override; |
2239 | |
2240 | /// Emit the data mapping/movement code associated with the directive |
2241 | /// \a D that should be of the form 'target [{enter|exit} data | update]'. |
2242 | /// \param D Directive to emit. |
2243 | /// \param IfCond Expression evaluated in if clause associated with the target |
2244 | /// directive, or null if no if clause is used. |
2245 | /// \param Device Expression evaluated in device clause associated with the |
2246 | /// target directive, or null if no device clause is used. |
2247 | void emitTargetDataStandAloneCall(CodeGenFunction &CGF, |
2248 | const OMPExecutableDirective &D, |
2249 | const Expr *IfCond, |
2250 | const Expr *Device) override; |
2251 | |
2252 | /// Emit initialization for doacross loop nesting support. |
2253 | /// \param D Loop-based construct used in doacross nesting construct. |
2254 | void emitDoacrossInit(CodeGenFunction &CGF, const OMPLoopDirective &D, |
2255 | ArrayRef<Expr *> NumIterations) override; |
2256 | |
2257 | /// Emit code for doacross ordered directive with 'depend' clause. |
2258 | /// \param C 'depend' clause with 'sink|source' dependency kind. |
2259 | void emitDoacrossOrdered(CodeGenFunction &CGF, |
2260 | const OMPDependClause *C) override; |
2261 | |
2262 | /// Emit code for doacross ordered directive with 'doacross' clause. |
2263 | /// \param C 'doacross' clause with 'sink|source' dependence type. |
2264 | void emitDoacrossOrdered(CodeGenFunction &CGF, |
2265 | const OMPDoacrossClause *C) override; |
2266 | |
2267 | /// Translates the native parameter of outlined function if this is required |
2268 | /// for target. |
2269 | /// \param FD Field decl from captured record for the parameter. |
2270 | /// \param NativeParam Parameter itself. |
2271 | const VarDecl *translateParameter(const FieldDecl *FD, |
2272 | const VarDecl *NativeParam) const override; |
2273 | |
2274 | /// Gets the address of the native argument basing on the address of the |
2275 | /// target-specific parameter. |
2276 | /// \param NativeParam Parameter itself. |
2277 | /// \param TargetParam Corresponding target-specific parameter. |
2278 | Address getParameterAddress(CodeGenFunction &CGF, const VarDecl *NativeParam, |
2279 | const VarDecl *TargetParam) const override; |
2280 | |
2281 | /// Gets the OpenMP-specific address of the local variable. |
2282 | Address getAddressOfLocalVariable(CodeGenFunction &CGF, |
2283 | const VarDecl *VD) override { |
2284 | return Address::invalid(); |
2285 | } |
2286 | }; |
2287 | |
2288 | } // namespace CodeGen |
2289 | // Utility for openmp doacross clause kind |
2290 | namespace { |
2291 | template <typename T> class OMPDoacrossKind { |
2292 | public: |
2293 | bool isSink(const T *) { return false; } |
2294 | bool isSource(const T *) { return false; } |
2295 | }; |
2296 | template <> class OMPDoacrossKind<OMPDependClause> { |
2297 | public: |
2298 | bool isSink(const OMPDependClause *C) { |
2299 | return C->getDependencyKind() == OMPC_DEPEND_sink; |
2300 | } |
2301 | bool isSource(const OMPDependClause *C) { |
2302 | return C->getDependencyKind() == OMPC_DEPEND_source; |
2303 | } |
2304 | }; |
2305 | template <> class OMPDoacrossKind<OMPDoacrossClause> { |
2306 | public: |
2307 | bool isSource(const OMPDoacrossClause *C) { |
2308 | return C->getDependenceType() == OMPC_DOACROSS_source || |
2309 | C->getDependenceType() == OMPC_DOACROSS_source_omp_cur_iteration; |
2310 | } |
2311 | bool isSink(const OMPDoacrossClause *C) { |
2312 | return C->getDependenceType() == OMPC_DOACROSS_sink || |
2313 | C->getDependenceType() == OMPC_DOACROSS_sink_omp_cur_iteration; |
2314 | } |
2315 | }; |
2316 | } // namespace |
2317 | } // namespace clang |
2318 | |
2319 | #endif |
2320 | |