1 //===--- Stmt.cpp - Statement AST Node Implementation ---------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the Stmt class and statement subclasses.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/ASTDiagnostic.h"
16 #include "clang/AST/ExprCXX.h"
17 #include "clang/AST/ExprObjC.h"
18 #include "clang/AST/Stmt.h"
19 #include "clang/AST/StmtCXX.h"
20 #include "clang/AST/StmtObjC.h"
21 #include "clang/AST/StmtOpenMP.h"
22 #include "clang/AST/Type.h"
23 #include "clang/Basic/CharInfo.h"
24 #include "clang/Basic/TargetInfo.h"
25 #include "clang/Lex/Token.h"
26 #include "llvm/ADT/StringExtras.h"
27 #include "llvm/Support/raw_ostream.h"
28 using namespace clang;
29 
30 static struct StmtClassNameTable {
31   const char *Name;
32   unsigned Counter;
33   unsigned Size;
34 } StmtClassInfo[Stmt::lastStmtConstant+1];
35 
36 static StmtClassNameTable &getStmtInfoTableEntry(Stmt::StmtClass E) {
37   static bool Initialized = false;
38   if (Initialized)
39     return StmtClassInfo[E];
40 
41   // Intialize the table on the first use.
42   Initialized = true;
43 #define ABSTRACT_STMT(STMT)
44 #define STMT(CLASS, PARENT) \
45   StmtClassInfo[(unsigned)Stmt::CLASS##Class].Name = #CLASS;    \
46   StmtClassInfo[(unsigned)Stmt::CLASS##Class].Size = sizeof(CLASS);
47 #include "clang/AST/StmtNodes.inc"
48 
49   return StmtClassInfo[E];
50 }
51 
52 void *Stmt::operator new(size_t bytes, const ASTContext& C,
53                          unsigned alignment) {
54   return ::operator new(bytes, C, alignment);
55 }
56 
57 const char *Stmt::getStmtClassName() const {
58   return getStmtInfoTableEntry((StmtClass) StmtBits.sClass).Name;
59 }
60 
61 void Stmt::PrintStats() {
62   // Ensure the table is primed.
63   getStmtInfoTableEntry(Stmt::NullStmtClass);
64 
65   unsigned sum = 0;
66   llvm::errs() << "\n*** Stmt/Expr Stats:\n";
67   for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
68     if (StmtClassInfo[i].Name == nullptr) continue;
69     sum += StmtClassInfo[i].Counter;
70   }
71   llvm::errs() << "  " << sum << " stmts/exprs total.\n";
72   sum = 0;
73   for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
74     if (StmtClassInfo[i].Name == nullptr) continue;
75     if (StmtClassInfo[i].Counter == 0) continue;
76     llvm::errs() << "    " << StmtClassInfo[i].Counter << " "
77                  << StmtClassInfo[i].Name << ", " << StmtClassInfo[i].Size
78                  << " each (" << StmtClassInfo[i].Counter*StmtClassInfo[i].Size
79                  << " bytes)\n";
80     sum += StmtClassInfo[i].Counter*StmtClassInfo[i].Size;
81   }
82 
83   llvm::errs() << "Total bytes = " << sum << "\n";
84 }
85 
86 void Stmt::addStmtClass(StmtClass s) {
87   ++getStmtInfoTableEntry(s).Counter;
88 }
89 
90 bool Stmt::StatisticsEnabled = false;
91 void Stmt::EnableStatistics() {
92   StatisticsEnabled = true;
93 }
94 
95 Stmt *Stmt::IgnoreImplicit() {
96   Stmt *s = this;
97 
98   if (ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(s))
99     s = ewc->getSubExpr();
100 
101   while (ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(s))
102     s = ice->getSubExpr();
103 
104   return s;
105 }
106 
107 /// \brief Strip off all label-like statements.
108 ///
109 /// This will strip off label statements, case statements, attributed
110 /// statements and default statements recursively.
111 const Stmt *Stmt::stripLabelLikeStatements() const {
112   const Stmt *S = this;
113   while (true) {
114     if (const LabelStmt *LS = dyn_cast<LabelStmt>(S))
115       S = LS->getSubStmt();
116     else if (const SwitchCase *SC = dyn_cast<SwitchCase>(S))
117       S = SC->getSubStmt();
118     else if (const AttributedStmt *AS = dyn_cast<AttributedStmt>(S))
119       S = AS->getSubStmt();
120     else
121       return S;
122   }
123 }
124 
125 namespace {
126   struct good {};
127   struct bad {};
128 
129   // These silly little functions have to be static inline to suppress
130   // unused warnings, and they have to be defined to suppress other
131   // warnings.
132   static inline good is_good(good) { return good(); }
133 
134   typedef Stmt::child_range children_t();
135   template <class T> good implements_children(children_t T::*) {
136     return good();
137   }
138   LLVM_ATTRIBUTE_UNUSED
139   static inline bad implements_children(children_t Stmt::*) {
140     return bad();
141   }
142 
143   typedef SourceLocation getLocStart_t() const;
144   template <class T> good implements_getLocStart(getLocStart_t T::*) {
145     return good();
146   }
147   LLVM_ATTRIBUTE_UNUSED
148   static inline bad implements_getLocStart(getLocStart_t Stmt::*) {
149     return bad();
150   }
151 
152   typedef SourceLocation getLocEnd_t() const;
153   template <class T> good implements_getLocEnd(getLocEnd_t T::*) {
154     return good();
155   }
156   LLVM_ATTRIBUTE_UNUSED
157   static inline bad implements_getLocEnd(getLocEnd_t Stmt::*) {
158     return bad();
159   }
160 
161 #define ASSERT_IMPLEMENTS_children(type) \
162   (void) is_good(implements_children(&type::children))
163 #define ASSERT_IMPLEMENTS_getLocStart(type) \
164   (void) is_good(implements_getLocStart(&type::getLocStart))
165 #define ASSERT_IMPLEMENTS_getLocEnd(type) \
166   (void) is_good(implements_getLocEnd(&type::getLocEnd))
167 }
168 
169 /// Check whether the various Stmt classes implement their member
170 /// functions.
171 LLVM_ATTRIBUTE_UNUSED
172 static inline void check_implementations() {
173 #define ABSTRACT_STMT(type)
174 #define STMT(type, base) \
175   ASSERT_IMPLEMENTS_children(type); \
176   ASSERT_IMPLEMENTS_getLocStart(type); \
177   ASSERT_IMPLEMENTS_getLocEnd(type);
178 #include "clang/AST/StmtNodes.inc"
179 }
180 
181 Stmt::child_range Stmt::children() {
182   switch (getStmtClass()) {
183   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
184 #define ABSTRACT_STMT(type)
185 #define STMT(type, base) \
186   case Stmt::type##Class: \
187     return static_cast<type*>(this)->children();
188 #include "clang/AST/StmtNodes.inc"
189   }
190   llvm_unreachable("unknown statement kind!");
191 }
192 
193 // Amusing macro metaprogramming hack: check whether a class provides
194 // a more specific implementation of getSourceRange.
195 //
196 // See also Expr.cpp:getExprLoc().
197 namespace {
198   /// This implementation is used when a class provides a custom
199   /// implementation of getSourceRange.
200   template <class S, class T>
201   SourceRange getSourceRangeImpl(const Stmt *stmt,
202                                  SourceRange (T::*v)() const) {
203     return static_cast<const S*>(stmt)->getSourceRange();
204   }
205 
206   /// This implementation is used when a class doesn't provide a custom
207   /// implementation of getSourceRange.  Overload resolution should pick it over
208   /// the implementation above because it's more specialized according to
209   /// function template partial ordering.
210   template <class S>
211   SourceRange getSourceRangeImpl(const Stmt *stmt,
212                                  SourceRange (Stmt::*v)() const) {
213     return SourceRange(static_cast<const S*>(stmt)->getLocStart(),
214                        static_cast<const S*>(stmt)->getLocEnd());
215   }
216 }
217 
218 SourceRange Stmt::getSourceRange() const {
219   switch (getStmtClass()) {
220   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
221 #define ABSTRACT_STMT(type)
222 #define STMT(type, base) \
223   case Stmt::type##Class: \
224     return getSourceRangeImpl<type>(this, &type::getSourceRange);
225 #include "clang/AST/StmtNodes.inc"
226   }
227   llvm_unreachable("unknown statement kind!");
228 }
229 
230 SourceLocation Stmt::getLocStart() const {
231 //  llvm::errs() << "getLocStart() for " << getStmtClassName() << "\n";
232   switch (getStmtClass()) {
233   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
234 #define ABSTRACT_STMT(type)
235 #define STMT(type, base) \
236   case Stmt::type##Class: \
237     return static_cast<const type*>(this)->getLocStart();
238 #include "clang/AST/StmtNodes.inc"
239   }
240   llvm_unreachable("unknown statement kind");
241 }
242 
243 SourceLocation Stmt::getLocEnd() const {
244   switch (getStmtClass()) {
245   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
246 #define ABSTRACT_STMT(type)
247 #define STMT(type, base) \
248   case Stmt::type##Class: \
249     return static_cast<const type*>(this)->getLocEnd();
250 #include "clang/AST/StmtNodes.inc"
251   }
252   llvm_unreachable("unknown statement kind");
253 }
254 
255 CompoundStmt::CompoundStmt(const ASTContext &C, ArrayRef<Stmt*> Stmts,
256                            SourceLocation LB, SourceLocation RB)
257   : Stmt(CompoundStmtClass), LBracLoc(LB), RBracLoc(RB) {
258   CompoundStmtBits.NumStmts = Stmts.size();
259   assert(CompoundStmtBits.NumStmts == Stmts.size() &&
260          "NumStmts doesn't fit in bits of CompoundStmtBits.NumStmts!");
261 
262   if (Stmts.size() == 0) {
263     Body = nullptr;
264     return;
265   }
266 
267   Body = new (C) Stmt*[Stmts.size()];
268   std::copy(Stmts.begin(), Stmts.end(), Body);
269 }
270 
271 void CompoundStmt::setStmts(const ASTContext &C, Stmt **Stmts,
272                             unsigned NumStmts) {
273   if (this->Body)
274     C.Deallocate(Body);
275   this->CompoundStmtBits.NumStmts = NumStmts;
276 
277   Body = new (C) Stmt*[NumStmts];
278   memcpy(Body, Stmts, sizeof(Stmt *) * NumStmts);
279 }
280 
281 const char *LabelStmt::getName() const {
282   return getDecl()->getIdentifier()->getNameStart();
283 }
284 
285 AttributedStmt *AttributedStmt::Create(const ASTContext &C, SourceLocation Loc,
286                                        ArrayRef<const Attr*> Attrs,
287                                        Stmt *SubStmt) {
288   assert(!Attrs.empty() && "Attrs should not be empty");
289   void *Mem = C.Allocate(sizeof(AttributedStmt) + sizeof(Attr *) * Attrs.size(),
290                          llvm::alignOf<AttributedStmt>());
291   return new (Mem) AttributedStmt(Loc, Attrs, SubStmt);
292 }
293 
294 AttributedStmt *AttributedStmt::CreateEmpty(const ASTContext &C,
295                                             unsigned NumAttrs) {
296   assert(NumAttrs > 0 && "NumAttrs should be greater than zero");
297   void *Mem = C.Allocate(sizeof(AttributedStmt) + sizeof(Attr *) * NumAttrs,
298                          llvm::alignOf<AttributedStmt>());
299   return new (Mem) AttributedStmt(EmptyShell(), NumAttrs);
300 }
301 
302 std::string AsmStmt::generateAsmString(const ASTContext &C) const {
303   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
304     return gccAsmStmt->generateAsmString(C);
305   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
306     return msAsmStmt->generateAsmString(C);
307   llvm_unreachable("unknown asm statement kind!");
308 }
309 
310 StringRef AsmStmt::getOutputConstraint(unsigned i) const {
311   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
312     return gccAsmStmt->getOutputConstraint(i);
313   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
314     return msAsmStmt->getOutputConstraint(i);
315   llvm_unreachable("unknown asm statement kind!");
316 }
317 
318 const Expr *AsmStmt::getOutputExpr(unsigned i) const {
319   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
320     return gccAsmStmt->getOutputExpr(i);
321   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
322     return msAsmStmt->getOutputExpr(i);
323   llvm_unreachable("unknown asm statement kind!");
324 }
325 
326 StringRef AsmStmt::getInputConstraint(unsigned i) const {
327   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
328     return gccAsmStmt->getInputConstraint(i);
329   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
330     return msAsmStmt->getInputConstraint(i);
331   llvm_unreachable("unknown asm statement kind!");
332 }
333 
334 const Expr *AsmStmt::getInputExpr(unsigned i) const {
335   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
336     return gccAsmStmt->getInputExpr(i);
337   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
338     return msAsmStmt->getInputExpr(i);
339   llvm_unreachable("unknown asm statement kind!");
340 }
341 
342 StringRef AsmStmt::getClobber(unsigned i) const {
343   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
344     return gccAsmStmt->getClobber(i);
345   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
346     return msAsmStmt->getClobber(i);
347   llvm_unreachable("unknown asm statement kind!");
348 }
349 
350 /// getNumPlusOperands - Return the number of output operands that have a "+"
351 /// constraint.
352 unsigned AsmStmt::getNumPlusOperands() const {
353   unsigned Res = 0;
354   for (unsigned i = 0, e = getNumOutputs(); i != e; ++i)
355     if (isOutputPlusConstraint(i))
356       ++Res;
357   return Res;
358 }
359 
360 StringRef GCCAsmStmt::getClobber(unsigned i) const {
361   return getClobberStringLiteral(i)->getString();
362 }
363 
364 Expr *GCCAsmStmt::getOutputExpr(unsigned i) {
365   return cast<Expr>(Exprs[i]);
366 }
367 
368 /// getOutputConstraint - Return the constraint string for the specified
369 /// output operand.  All output constraints are known to be non-empty (either
370 /// '=' or '+').
371 StringRef GCCAsmStmt::getOutputConstraint(unsigned i) const {
372   return getOutputConstraintLiteral(i)->getString();
373 }
374 
375 Expr *GCCAsmStmt::getInputExpr(unsigned i) {
376   return cast<Expr>(Exprs[i + NumOutputs]);
377 }
378 void GCCAsmStmt::setInputExpr(unsigned i, Expr *E) {
379   Exprs[i + NumOutputs] = E;
380 }
381 
382 /// getInputConstraint - Return the specified input constraint.  Unlike output
383 /// constraints, these can be empty.
384 StringRef GCCAsmStmt::getInputConstraint(unsigned i) const {
385   return getInputConstraintLiteral(i)->getString();
386 }
387 
388 void GCCAsmStmt::setOutputsAndInputsAndClobbers(const ASTContext &C,
389                                                 IdentifierInfo **Names,
390                                                 StringLiteral **Constraints,
391                                                 Stmt **Exprs,
392                                                 unsigned NumOutputs,
393                                                 unsigned NumInputs,
394                                                 StringLiteral **Clobbers,
395                                                 unsigned NumClobbers) {
396   this->NumOutputs = NumOutputs;
397   this->NumInputs = NumInputs;
398   this->NumClobbers = NumClobbers;
399 
400   unsigned NumExprs = NumOutputs + NumInputs;
401 
402   C.Deallocate(this->Names);
403   this->Names = new (C) IdentifierInfo*[NumExprs];
404   std::copy(Names, Names + NumExprs, this->Names);
405 
406   C.Deallocate(this->Exprs);
407   this->Exprs = new (C) Stmt*[NumExprs];
408   std::copy(Exprs, Exprs + NumExprs, this->Exprs);
409 
410   C.Deallocate(this->Constraints);
411   this->Constraints = new (C) StringLiteral*[NumExprs];
412   std::copy(Constraints, Constraints + NumExprs, this->Constraints);
413 
414   C.Deallocate(this->Clobbers);
415   this->Clobbers = new (C) StringLiteral*[NumClobbers];
416   std::copy(Clobbers, Clobbers + NumClobbers, this->Clobbers);
417 }
418 
419 /// getNamedOperand - Given a symbolic operand reference like %[foo],
420 /// translate this into a numeric value needed to reference the same operand.
421 /// This returns -1 if the operand name is invalid.
422 int GCCAsmStmt::getNamedOperand(StringRef SymbolicName) const {
423   unsigned NumPlusOperands = 0;
424 
425   // Check if this is an output operand.
426   for (unsigned i = 0, e = getNumOutputs(); i != e; ++i) {
427     if (getOutputName(i) == SymbolicName)
428       return i;
429   }
430 
431   for (unsigned i = 0, e = getNumInputs(); i != e; ++i)
432     if (getInputName(i) == SymbolicName)
433       return getNumOutputs() + NumPlusOperands + i;
434 
435   // Not found.
436   return -1;
437 }
438 
439 /// AnalyzeAsmString - Analyze the asm string of the current asm, decomposing
440 /// it into pieces.  If the asm string is erroneous, emit errors and return
441 /// true, otherwise return false.
442 unsigned GCCAsmStmt::AnalyzeAsmString(SmallVectorImpl<AsmStringPiece>&Pieces,
443                                 const ASTContext &C, unsigned &DiagOffs) const {
444   StringRef Str = getAsmString()->getString();
445   const char *StrStart = Str.begin();
446   const char *StrEnd = Str.end();
447   const char *CurPtr = StrStart;
448 
449   // "Simple" inline asms have no constraints or operands, just convert the asm
450   // string to escape $'s.
451   if (isSimple()) {
452     std::string Result;
453     for (; CurPtr != StrEnd; ++CurPtr) {
454       switch (*CurPtr) {
455       case '$':
456         Result += "$$";
457         break;
458       default:
459         Result += *CurPtr;
460         break;
461       }
462     }
463     Pieces.push_back(AsmStringPiece(Result));
464     return 0;
465   }
466 
467   // CurStringPiece - The current string that we are building up as we scan the
468   // asm string.
469   std::string CurStringPiece;
470 
471   bool HasVariants = !C.getTargetInfo().hasNoAsmVariants();
472 
473   while (1) {
474     // Done with the string?
475     if (CurPtr == StrEnd) {
476       if (!CurStringPiece.empty())
477         Pieces.push_back(AsmStringPiece(CurStringPiece));
478       return 0;
479     }
480 
481     char CurChar = *CurPtr++;
482     switch (CurChar) {
483     case '$': CurStringPiece += "$$"; continue;
484     case '{': CurStringPiece += (HasVariants ? "$(" : "{"); continue;
485     case '|': CurStringPiece += (HasVariants ? "$|" : "|"); continue;
486     case '}': CurStringPiece += (HasVariants ? "$)" : "}"); continue;
487     case '%':
488       break;
489     default:
490       CurStringPiece += CurChar;
491       continue;
492     }
493 
494     // Escaped "%" character in asm string.
495     if (CurPtr == StrEnd) {
496       // % at end of string is invalid (no escape).
497       DiagOffs = CurPtr-StrStart-1;
498       return diag::err_asm_invalid_escape;
499     }
500 
501     char EscapedChar = *CurPtr++;
502     if (EscapedChar == '%') {  // %% -> %
503       // Escaped percentage sign.
504       CurStringPiece += '%';
505       continue;
506     }
507 
508     if (EscapedChar == '=') {  // %= -> Generate an unique ID.
509       CurStringPiece += "${:uid}";
510       continue;
511     }
512 
513     // Otherwise, we have an operand.  If we have accumulated a string so far,
514     // add it to the Pieces list.
515     if (!CurStringPiece.empty()) {
516       Pieces.push_back(AsmStringPiece(CurStringPiece));
517       CurStringPiece.clear();
518     }
519 
520     // Handle %x4 and %x[foo] by capturing x as the modifier character.
521     char Modifier = '\0';
522     if (isLetter(EscapedChar)) {
523       if (CurPtr == StrEnd) { // Premature end.
524         DiagOffs = CurPtr-StrStart-1;
525         return diag::err_asm_invalid_escape;
526       }
527       Modifier = EscapedChar;
528       EscapedChar = *CurPtr++;
529     }
530 
531     if (isDigit(EscapedChar)) {
532       // %n - Assembler operand n
533       unsigned N = 0;
534 
535       --CurPtr;
536       while (CurPtr != StrEnd && isDigit(*CurPtr))
537         N = N*10 + ((*CurPtr++)-'0');
538 
539       unsigned NumOperands =
540         getNumOutputs() + getNumPlusOperands() + getNumInputs();
541       if (N >= NumOperands) {
542         DiagOffs = CurPtr-StrStart-1;
543         return diag::err_asm_invalid_operand_number;
544       }
545 
546       Pieces.push_back(AsmStringPiece(N, Modifier));
547       continue;
548     }
549 
550     // Handle %[foo], a symbolic operand reference.
551     if (EscapedChar == '[') {
552       DiagOffs = CurPtr-StrStart-1;
553 
554       // Find the ']'.
555       const char *NameEnd = (const char*)memchr(CurPtr, ']', StrEnd-CurPtr);
556       if (NameEnd == nullptr)
557         return diag::err_asm_unterminated_symbolic_operand_name;
558       if (NameEnd == CurPtr)
559         return diag::err_asm_empty_symbolic_operand_name;
560 
561       StringRef SymbolicName(CurPtr, NameEnd - CurPtr);
562 
563       int N = getNamedOperand(SymbolicName);
564       if (N == -1) {
565         // Verify that an operand with that name exists.
566         DiagOffs = CurPtr-StrStart;
567         return diag::err_asm_unknown_symbolic_operand_name;
568       }
569       Pieces.push_back(AsmStringPiece(N, Modifier));
570 
571       CurPtr = NameEnd+1;
572       continue;
573     }
574 
575     DiagOffs = CurPtr-StrStart-1;
576     return diag::err_asm_invalid_escape;
577   }
578 }
579 
580 /// Assemble final IR asm string (GCC-style).
581 std::string GCCAsmStmt::generateAsmString(const ASTContext &C) const {
582   // Analyze the asm string to decompose it into its pieces.  We know that Sema
583   // has already done this, so it is guaranteed to be successful.
584   SmallVector<GCCAsmStmt::AsmStringPiece, 4> Pieces;
585   unsigned DiagOffs;
586   AnalyzeAsmString(Pieces, C, DiagOffs);
587 
588   std::string AsmString;
589   for (unsigned i = 0, e = Pieces.size(); i != e; ++i) {
590     if (Pieces[i].isString())
591       AsmString += Pieces[i].getString();
592     else if (Pieces[i].getModifier() == '\0')
593       AsmString += '$' + llvm::utostr(Pieces[i].getOperandNo());
594     else
595       AsmString += "${" + llvm::utostr(Pieces[i].getOperandNo()) + ':' +
596                    Pieces[i].getModifier() + '}';
597   }
598   return AsmString;
599 }
600 
601 /// Assemble final IR asm string (MS-style).
602 std::string MSAsmStmt::generateAsmString(const ASTContext &C) const {
603   // FIXME: This needs to be translated into the IR string representation.
604   return AsmStr;
605 }
606 
607 Expr *MSAsmStmt::getOutputExpr(unsigned i) {
608   return cast<Expr>(Exprs[i]);
609 }
610 
611 Expr *MSAsmStmt::getInputExpr(unsigned i) {
612   return cast<Expr>(Exprs[i + NumOutputs]);
613 }
614 void MSAsmStmt::setInputExpr(unsigned i, Expr *E) {
615   Exprs[i + NumOutputs] = E;
616 }
617 
618 QualType CXXCatchStmt::getCaughtType() const {
619   if (ExceptionDecl)
620     return ExceptionDecl->getType();
621   return QualType();
622 }
623 
624 //===----------------------------------------------------------------------===//
625 // Constructors
626 //===----------------------------------------------------------------------===//
627 
628 GCCAsmStmt::GCCAsmStmt(const ASTContext &C, SourceLocation asmloc,
629                        bool issimple, bool isvolatile, unsigned numoutputs,
630                        unsigned numinputs, IdentifierInfo **names,
631                        StringLiteral **constraints, Expr **exprs,
632                        StringLiteral *asmstr, unsigned numclobbers,
633                        StringLiteral **clobbers, SourceLocation rparenloc)
634   : AsmStmt(GCCAsmStmtClass, asmloc, issimple, isvolatile, numoutputs,
635             numinputs, numclobbers), RParenLoc(rparenloc), AsmStr(asmstr) {
636 
637   unsigned NumExprs = NumOutputs + NumInputs;
638 
639   Names = new (C) IdentifierInfo*[NumExprs];
640   std::copy(names, names + NumExprs, Names);
641 
642   Exprs = new (C) Stmt*[NumExprs];
643   std::copy(exprs, exprs + NumExprs, Exprs);
644 
645   Constraints = new (C) StringLiteral*[NumExprs];
646   std::copy(constraints, constraints + NumExprs, Constraints);
647 
648   Clobbers = new (C) StringLiteral*[NumClobbers];
649   std::copy(clobbers, clobbers + NumClobbers, Clobbers);
650 }
651 
652 MSAsmStmt::MSAsmStmt(const ASTContext &C, SourceLocation asmloc,
653                      SourceLocation lbraceloc, bool issimple, bool isvolatile,
654                      ArrayRef<Token> asmtoks, unsigned numoutputs,
655                      unsigned numinputs,
656                      ArrayRef<StringRef> constraints, ArrayRef<Expr*> exprs,
657                      StringRef asmstr, ArrayRef<StringRef> clobbers,
658                      SourceLocation endloc)
659   : AsmStmt(MSAsmStmtClass, asmloc, issimple, isvolatile, numoutputs,
660             numinputs, clobbers.size()), LBraceLoc(lbraceloc),
661             EndLoc(endloc), NumAsmToks(asmtoks.size()) {
662 
663   initialize(C, asmstr, asmtoks, constraints, exprs, clobbers);
664 }
665 
666 static StringRef copyIntoContext(const ASTContext &C, StringRef str) {
667   size_t size = str.size();
668   char *buffer = new (C) char[size];
669   memcpy(buffer, str.data(), size);
670   return StringRef(buffer, size);
671 }
672 
673 void MSAsmStmt::initialize(const ASTContext &C, StringRef asmstr,
674                            ArrayRef<Token> asmtoks,
675                            ArrayRef<StringRef> constraints,
676                            ArrayRef<Expr*> exprs,
677                            ArrayRef<StringRef> clobbers) {
678   assert(NumAsmToks == asmtoks.size());
679   assert(NumClobbers == clobbers.size());
680 
681   unsigned NumExprs = exprs.size();
682   assert(NumExprs == NumOutputs + NumInputs);
683   assert(NumExprs == constraints.size());
684 
685   AsmStr = copyIntoContext(C, asmstr);
686 
687   Exprs = new (C) Stmt*[NumExprs];
688   for (unsigned i = 0, e = NumExprs; i != e; ++i)
689     Exprs[i] = exprs[i];
690 
691   AsmToks = new (C) Token[NumAsmToks];
692   for (unsigned i = 0, e = NumAsmToks; i != e; ++i)
693     AsmToks[i] = asmtoks[i];
694 
695   Constraints = new (C) StringRef[NumExprs];
696   for (unsigned i = 0, e = NumExprs; i != e; ++i) {
697     Constraints[i] = copyIntoContext(C, constraints[i]);
698   }
699 
700   Clobbers = new (C) StringRef[NumClobbers];
701   for (unsigned i = 0, e = NumClobbers; i != e; ++i) {
702     // FIXME: Avoid the allocation/copy if at all possible.
703     Clobbers[i] = copyIntoContext(C, clobbers[i]);
704   }
705 }
706 
707 ObjCForCollectionStmt::ObjCForCollectionStmt(Stmt *Elem, Expr *Collect,
708                                              Stmt *Body,  SourceLocation FCL,
709                                              SourceLocation RPL)
710 : Stmt(ObjCForCollectionStmtClass) {
711   SubExprs[ELEM] = Elem;
712   SubExprs[COLLECTION] = Collect;
713   SubExprs[BODY] = Body;
714   ForLoc = FCL;
715   RParenLoc = RPL;
716 }
717 
718 ObjCAtTryStmt::ObjCAtTryStmt(SourceLocation atTryLoc, Stmt *atTryStmt,
719                              Stmt **CatchStmts, unsigned NumCatchStmts,
720                              Stmt *atFinallyStmt)
721   : Stmt(ObjCAtTryStmtClass), AtTryLoc(atTryLoc),
722     NumCatchStmts(NumCatchStmts), HasFinally(atFinallyStmt != nullptr) {
723   Stmt **Stmts = getStmts();
724   Stmts[0] = atTryStmt;
725   for (unsigned I = 0; I != NumCatchStmts; ++I)
726     Stmts[I + 1] = CatchStmts[I];
727 
728   if (HasFinally)
729     Stmts[NumCatchStmts + 1] = atFinallyStmt;
730 }
731 
732 ObjCAtTryStmt *ObjCAtTryStmt::Create(const ASTContext &Context,
733                                      SourceLocation atTryLoc,
734                                      Stmt *atTryStmt,
735                                      Stmt **CatchStmts,
736                                      unsigned NumCatchStmts,
737                                      Stmt *atFinallyStmt) {
738   unsigned Size = sizeof(ObjCAtTryStmt) +
739     (1 + NumCatchStmts + (atFinallyStmt != nullptr)) * sizeof(Stmt *);
740   void *Mem = Context.Allocate(Size, llvm::alignOf<ObjCAtTryStmt>());
741   return new (Mem) ObjCAtTryStmt(atTryLoc, atTryStmt, CatchStmts, NumCatchStmts,
742                                  atFinallyStmt);
743 }
744 
745 ObjCAtTryStmt *ObjCAtTryStmt::CreateEmpty(const ASTContext &Context,
746                                           unsigned NumCatchStmts,
747                                           bool HasFinally) {
748   unsigned Size = sizeof(ObjCAtTryStmt) +
749     (1 + NumCatchStmts + HasFinally) * sizeof(Stmt *);
750   void *Mem = Context.Allocate(Size, llvm::alignOf<ObjCAtTryStmt>());
751   return new (Mem) ObjCAtTryStmt(EmptyShell(), NumCatchStmts, HasFinally);
752 }
753 
754 SourceLocation ObjCAtTryStmt::getLocEnd() const {
755   if (HasFinally)
756     return getFinallyStmt()->getLocEnd();
757   if (NumCatchStmts)
758     return getCatchStmt(NumCatchStmts - 1)->getLocEnd();
759   return getTryBody()->getLocEnd();
760 }
761 
762 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, SourceLocation tryLoc,
763                                Stmt *tryBlock, ArrayRef<Stmt*> handlers) {
764   std::size_t Size = sizeof(CXXTryStmt);
765   Size += ((handlers.size() + 1) * sizeof(Stmt));
766 
767   void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
768   return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers);
769 }
770 
771 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, EmptyShell Empty,
772                                unsigned numHandlers) {
773   std::size_t Size = sizeof(CXXTryStmt);
774   Size += ((numHandlers + 1) * sizeof(Stmt));
775 
776   void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
777   return new (Mem) CXXTryStmt(Empty, numHandlers);
778 }
779 
780 CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, Stmt *tryBlock,
781                        ArrayRef<Stmt*> handlers)
782   : Stmt(CXXTryStmtClass), TryLoc(tryLoc), NumHandlers(handlers.size()) {
783   Stmt **Stmts = reinterpret_cast<Stmt **>(this + 1);
784   Stmts[0] = tryBlock;
785   std::copy(handlers.begin(), handlers.end(), Stmts + 1);
786 }
787 
788 CXXForRangeStmt::CXXForRangeStmt(DeclStmt *Range, DeclStmt *BeginEndStmt,
789                                  Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
790                                  Stmt *Body, SourceLocation FL,
791                                  SourceLocation CL, SourceLocation RPL)
792   : Stmt(CXXForRangeStmtClass), ForLoc(FL), ColonLoc(CL), RParenLoc(RPL) {
793   SubExprs[RANGE] = Range;
794   SubExprs[BEGINEND] = BeginEndStmt;
795   SubExprs[COND] = Cond;
796   SubExprs[INC] = Inc;
797   SubExprs[LOOPVAR] = LoopVar;
798   SubExprs[BODY] = Body;
799 }
800 
801 Expr *CXXForRangeStmt::getRangeInit() {
802   DeclStmt *RangeStmt = getRangeStmt();
803   VarDecl *RangeDecl = dyn_cast_or_null<VarDecl>(RangeStmt->getSingleDecl());
804   assert(RangeDecl && "for-range should have a single var decl");
805   return RangeDecl->getInit();
806 }
807 
808 const Expr *CXXForRangeStmt::getRangeInit() const {
809   return const_cast<CXXForRangeStmt*>(this)->getRangeInit();
810 }
811 
812 VarDecl *CXXForRangeStmt::getLoopVariable() {
813   Decl *LV = cast<DeclStmt>(getLoopVarStmt())->getSingleDecl();
814   assert(LV && "No loop variable in CXXForRangeStmt");
815   return cast<VarDecl>(LV);
816 }
817 
818 const VarDecl *CXXForRangeStmt::getLoopVariable() const {
819   return const_cast<CXXForRangeStmt*>(this)->getLoopVariable();
820 }
821 
822 IfStmt::IfStmt(const ASTContext &C, SourceLocation IL, VarDecl *var, Expr *cond,
823                Stmt *then, SourceLocation EL, Stmt *elsev)
824   : Stmt(IfStmtClass), IfLoc(IL), ElseLoc(EL)
825 {
826   setConditionVariable(C, var);
827   SubExprs[COND] = cond;
828   SubExprs[THEN] = then;
829   SubExprs[ELSE] = elsev;
830 }
831 
832 VarDecl *IfStmt::getConditionVariable() const {
833   if (!SubExprs[VAR])
834     return nullptr;
835 
836   DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
837   return cast<VarDecl>(DS->getSingleDecl());
838 }
839 
840 void IfStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
841   if (!V) {
842     SubExprs[VAR] = nullptr;
843     return;
844   }
845 
846   SourceRange VarRange = V->getSourceRange();
847   SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
848                                    VarRange.getEnd());
849 }
850 
851 ForStmt::ForStmt(const ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar,
852                  Expr *Inc, Stmt *Body, SourceLocation FL, SourceLocation LP,
853                  SourceLocation RP)
854   : Stmt(ForStmtClass), ForLoc(FL), LParenLoc(LP), RParenLoc(RP)
855 {
856   SubExprs[INIT] = Init;
857   setConditionVariable(C, condVar);
858   SubExprs[COND] = Cond;
859   SubExprs[INC] = Inc;
860   SubExprs[BODY] = Body;
861 }
862 
863 VarDecl *ForStmt::getConditionVariable() const {
864   if (!SubExprs[CONDVAR])
865     return nullptr;
866 
867   DeclStmt *DS = cast<DeclStmt>(SubExprs[CONDVAR]);
868   return cast<VarDecl>(DS->getSingleDecl());
869 }
870 
871 void ForStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
872   if (!V) {
873     SubExprs[CONDVAR] = nullptr;
874     return;
875   }
876 
877   SourceRange VarRange = V->getSourceRange();
878   SubExprs[CONDVAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
879                                        VarRange.getEnd());
880 }
881 
882 SwitchStmt::SwitchStmt(const ASTContext &C, VarDecl *Var, Expr *cond)
883   : Stmt(SwitchStmtClass), FirstCase(nullptr), AllEnumCasesCovered(0)
884 {
885   setConditionVariable(C, Var);
886   SubExprs[COND] = cond;
887   SubExprs[BODY] = nullptr;
888 }
889 
890 VarDecl *SwitchStmt::getConditionVariable() const {
891   if (!SubExprs[VAR])
892     return nullptr;
893 
894   DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
895   return cast<VarDecl>(DS->getSingleDecl());
896 }
897 
898 void SwitchStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
899   if (!V) {
900     SubExprs[VAR] = nullptr;
901     return;
902   }
903 
904   SourceRange VarRange = V->getSourceRange();
905   SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
906                                    VarRange.getEnd());
907 }
908 
909 Stmt *SwitchCase::getSubStmt() {
910   if (isa<CaseStmt>(this))
911     return cast<CaseStmt>(this)->getSubStmt();
912   return cast<DefaultStmt>(this)->getSubStmt();
913 }
914 
915 WhileStmt::WhileStmt(const ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body,
916                      SourceLocation WL)
917   : Stmt(WhileStmtClass) {
918   setConditionVariable(C, Var);
919   SubExprs[COND] = cond;
920   SubExprs[BODY] = body;
921   WhileLoc = WL;
922 }
923 
924 VarDecl *WhileStmt::getConditionVariable() const {
925   if (!SubExprs[VAR])
926     return nullptr;
927 
928   DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
929   return cast<VarDecl>(DS->getSingleDecl());
930 }
931 
932 void WhileStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
933   if (!V) {
934     SubExprs[VAR] = nullptr;
935     return;
936   }
937 
938   SourceRange VarRange = V->getSourceRange();
939   SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
940                                    VarRange.getEnd());
941 }
942 
943 // IndirectGotoStmt
944 LabelDecl *IndirectGotoStmt::getConstantTarget() {
945   if (AddrLabelExpr *E =
946         dyn_cast<AddrLabelExpr>(getTarget()->IgnoreParenImpCasts()))
947     return E->getLabel();
948   return nullptr;
949 }
950 
951 // ReturnStmt
952 const Expr* ReturnStmt::getRetValue() const {
953   return cast_or_null<Expr>(RetExpr);
954 }
955 Expr* ReturnStmt::getRetValue() {
956   return cast_or_null<Expr>(RetExpr);
957 }
958 
959 SEHTryStmt::SEHTryStmt(bool IsCXXTry, SourceLocation TryLoc, Stmt *TryBlock,
960                        Stmt *Handler, int HandlerIndex, int HandlerParentIndex)
961     : Stmt(SEHTryStmtClass), IsCXXTry(IsCXXTry), TryLoc(TryLoc),
962       HandlerIndex(HandlerIndex), HandlerParentIndex(HandlerParentIndex) {
963   Children[TRY] = TryBlock;
964   Children[HANDLER] = Handler;
965 }
966 
967 SEHTryStmt *SEHTryStmt::Create(const ASTContext &C, bool IsCXXTry,
968                                SourceLocation TryLoc, Stmt *TryBlock,
969                                Stmt *Handler, int HandlerIndex,
970                                int HandlerParentIndex) {
971   return new (C) SEHTryStmt(IsCXXTry, TryLoc, TryBlock, Handler, HandlerIndex,
972                             HandlerParentIndex);
973 }
974 
975 SEHExceptStmt* SEHTryStmt::getExceptHandler() const {
976   return dyn_cast<SEHExceptStmt>(getHandler());
977 }
978 
979 SEHFinallyStmt* SEHTryStmt::getFinallyHandler() const {
980   return dyn_cast<SEHFinallyStmt>(getHandler());
981 }
982 
983 SEHExceptStmt::SEHExceptStmt(SourceLocation Loc,
984                              Expr *FilterExpr,
985                              Stmt *Block)
986   : Stmt(SEHExceptStmtClass),
987     Loc(Loc)
988 {
989   Children[FILTER_EXPR] = FilterExpr;
990   Children[BLOCK]       = Block;
991 }
992 
993 SEHExceptStmt* SEHExceptStmt::Create(const ASTContext &C, SourceLocation Loc,
994                                      Expr *FilterExpr, Stmt *Block) {
995   return new(C) SEHExceptStmt(Loc,FilterExpr,Block);
996 }
997 
998 SEHFinallyStmt::SEHFinallyStmt(SourceLocation Loc,
999                                Stmt *Block)
1000   : Stmt(SEHFinallyStmtClass),
1001     Loc(Loc),
1002     Block(Block)
1003 {}
1004 
1005 SEHFinallyStmt* SEHFinallyStmt::Create(const ASTContext &C, SourceLocation Loc,
1006                                        Stmt *Block) {
1007   return new(C)SEHFinallyStmt(Loc,Block);
1008 }
1009 
1010 CapturedStmt::Capture *CapturedStmt::getStoredCaptures() const {
1011   unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
1012 
1013   // Offset of the first Capture object.
1014   unsigned FirstCaptureOffset =
1015     llvm::RoundUpToAlignment(Size, llvm::alignOf<Capture>());
1016 
1017   return reinterpret_cast<Capture *>(
1018       reinterpret_cast<char *>(const_cast<CapturedStmt *>(this))
1019       + FirstCaptureOffset);
1020 }
1021 
1022 CapturedStmt::CapturedStmt(Stmt *S, CapturedRegionKind Kind,
1023                            ArrayRef<Capture> Captures,
1024                            ArrayRef<Expr *> CaptureInits,
1025                            CapturedDecl *CD,
1026                            RecordDecl *RD)
1027   : Stmt(CapturedStmtClass), NumCaptures(Captures.size()),
1028     CapDeclAndKind(CD, Kind), TheRecordDecl(RD) {
1029   assert( S && "null captured statement");
1030   assert(CD && "null captured declaration for captured statement");
1031   assert(RD && "null record declaration for captured statement");
1032 
1033   // Copy initialization expressions.
1034   Stmt **Stored = getStoredStmts();
1035   for (unsigned I = 0, N = NumCaptures; I != N; ++I)
1036     *Stored++ = CaptureInits[I];
1037 
1038   // Copy the statement being captured.
1039   *Stored = S;
1040 
1041   // Copy all Capture objects.
1042   Capture *Buffer = getStoredCaptures();
1043   std::copy(Captures.begin(), Captures.end(), Buffer);
1044 }
1045 
1046 CapturedStmt::CapturedStmt(EmptyShell Empty, unsigned NumCaptures)
1047   : Stmt(CapturedStmtClass, Empty), NumCaptures(NumCaptures),
1048     CapDeclAndKind(nullptr, CR_Default), TheRecordDecl(nullptr) {
1049   getStoredStmts()[NumCaptures] = nullptr;
1050 }
1051 
1052 CapturedStmt *CapturedStmt::Create(const ASTContext &Context, Stmt *S,
1053                                    CapturedRegionKind Kind,
1054                                    ArrayRef<Capture> Captures,
1055                                    ArrayRef<Expr *> CaptureInits,
1056                                    CapturedDecl *CD,
1057                                    RecordDecl *RD) {
1058   // The layout is
1059   //
1060   // -----------------------------------------------------------
1061   // | CapturedStmt, Init, ..., Init, S, Capture, ..., Capture |
1062   // ----------------^-------------------^----------------------
1063   //                 getStoredStmts()    getStoredCaptures()
1064   //
1065   // where S is the statement being captured.
1066   //
1067   assert(CaptureInits.size() == Captures.size() && "wrong number of arguments");
1068 
1069   unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (Captures.size() + 1);
1070   if (!Captures.empty()) {
1071     // Realign for the following Capture array.
1072     Size = llvm::RoundUpToAlignment(Size, llvm::alignOf<Capture>());
1073     Size += sizeof(Capture) * Captures.size();
1074   }
1075 
1076   void *Mem = Context.Allocate(Size);
1077   return new (Mem) CapturedStmt(S, Kind, Captures, CaptureInits, CD, RD);
1078 }
1079 
1080 CapturedStmt *CapturedStmt::CreateDeserialized(const ASTContext &Context,
1081                                                unsigned NumCaptures) {
1082   unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
1083   if (NumCaptures > 0) {
1084     // Realign for the following Capture array.
1085     Size = llvm::RoundUpToAlignment(Size, llvm::alignOf<Capture>());
1086     Size += sizeof(Capture) * NumCaptures;
1087   }
1088 
1089   void *Mem = Context.Allocate(Size);
1090   return new (Mem) CapturedStmt(EmptyShell(), NumCaptures);
1091 }
1092 
1093 Stmt::child_range CapturedStmt::children() {
1094   // Children are captured field initilizers.
1095   return child_range(getStoredStmts(), getStoredStmts() + NumCaptures);
1096 }
1097 
1098 bool CapturedStmt::capturesVariable(const VarDecl *Var) const {
1099   for (const auto &I : captures()) {
1100     if (!I.capturesVariable())
1101       continue;
1102 
1103     // This does not handle variable redeclarations. This should be
1104     // extended to capture variables with redeclarations, for example
1105     // a thread-private variable in OpenMP.
1106     if (I.getCapturedVar() == Var)
1107       return true;
1108   }
1109 
1110   return false;
1111 }
1112 
1113 StmtRange OMPClause::children() {
1114   switch(getClauseKind()) {
1115   default : break;
1116 #define OPENMP_CLAUSE(Name, Class)                                       \
1117   case OMPC_ ## Name : return static_cast<Class *>(this)->children();
1118 #include "clang/Basic/OpenMPKinds.def"
1119   }
1120   llvm_unreachable("unknown OMPClause");
1121 }
1122 
1123 OMPPrivateClause *OMPPrivateClause::Create(const ASTContext &C,
1124                                            SourceLocation StartLoc,
1125                                            SourceLocation LParenLoc,
1126                                            SourceLocation EndLoc,
1127                                            ArrayRef<Expr *> VL) {
1128   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPPrivateClause),
1129                                                   llvm::alignOf<Expr *>()) +
1130                          sizeof(Expr *) * VL.size());
1131   OMPPrivateClause *Clause = new (Mem) OMPPrivateClause(StartLoc, LParenLoc,
1132                                                         EndLoc, VL.size());
1133   Clause->setVarRefs(VL);
1134   return Clause;
1135 }
1136 
1137 OMPPrivateClause *OMPPrivateClause::CreateEmpty(const ASTContext &C,
1138                                                 unsigned N) {
1139   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPPrivateClause),
1140                                                   llvm::alignOf<Expr *>()) +
1141                          sizeof(Expr *) * N);
1142   return new (Mem) OMPPrivateClause(N);
1143 }
1144 
1145 OMPFirstprivateClause *OMPFirstprivateClause::Create(const ASTContext &C,
1146                                                      SourceLocation StartLoc,
1147                                                      SourceLocation LParenLoc,
1148                                                      SourceLocation EndLoc,
1149                                                      ArrayRef<Expr *> VL) {
1150   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPFirstprivateClause),
1151                                                   llvm::alignOf<Expr *>()) +
1152                          sizeof(Expr *) * VL.size());
1153   OMPFirstprivateClause *Clause = new (Mem) OMPFirstprivateClause(StartLoc,
1154                                                                   LParenLoc,
1155                                                                   EndLoc,
1156                                                                   VL.size());
1157   Clause->setVarRefs(VL);
1158   return Clause;
1159 }
1160 
1161 OMPFirstprivateClause *OMPFirstprivateClause::CreateEmpty(const ASTContext &C,
1162                                                           unsigned N) {
1163   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPFirstprivateClause),
1164                                                   llvm::alignOf<Expr *>()) +
1165                          sizeof(Expr *) * N);
1166   return new (Mem) OMPFirstprivateClause(N);
1167 }
1168 
1169 OMPLastprivateClause *OMPLastprivateClause::Create(const ASTContext &C,
1170                                                    SourceLocation StartLoc,
1171                                                    SourceLocation LParenLoc,
1172                                                    SourceLocation EndLoc,
1173                                                    ArrayRef<Expr *> VL) {
1174   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPLastprivateClause),
1175                                                   llvm::alignOf<Expr *>()) +
1176                          sizeof(Expr *) * VL.size());
1177   OMPLastprivateClause *Clause =
1178       new (Mem) OMPLastprivateClause(StartLoc, LParenLoc, EndLoc, VL.size());
1179   Clause->setVarRefs(VL);
1180   return Clause;
1181 }
1182 
1183 OMPLastprivateClause *OMPLastprivateClause::CreateEmpty(const ASTContext &C,
1184                                                         unsigned N) {
1185   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPLastprivateClause),
1186                                                   llvm::alignOf<Expr *>()) +
1187                          sizeof(Expr *) * N);
1188   return new (Mem) OMPLastprivateClause(N);
1189 }
1190 
1191 OMPSharedClause *OMPSharedClause::Create(const ASTContext &C,
1192                                          SourceLocation StartLoc,
1193                                          SourceLocation LParenLoc,
1194                                          SourceLocation EndLoc,
1195                                          ArrayRef<Expr *> VL) {
1196   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPSharedClause),
1197                                                   llvm::alignOf<Expr *>()) +
1198                          sizeof(Expr *) * VL.size());
1199   OMPSharedClause *Clause = new (Mem) OMPSharedClause(StartLoc, LParenLoc,
1200                                                       EndLoc, VL.size());
1201   Clause->setVarRefs(VL);
1202   return Clause;
1203 }
1204 
1205 OMPSharedClause *OMPSharedClause::CreateEmpty(const ASTContext &C,
1206                                               unsigned N) {
1207   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPSharedClause),
1208                                                   llvm::alignOf<Expr *>()) +
1209                          sizeof(Expr *) * N);
1210   return new (Mem) OMPSharedClause(N);
1211 }
1212 
1213 OMPLinearClause *OMPLinearClause::Create(const ASTContext &C,
1214                                          SourceLocation StartLoc,
1215                                          SourceLocation LParenLoc,
1216                                          SourceLocation ColonLoc,
1217                                          SourceLocation EndLoc,
1218                                          ArrayRef<Expr *> VL, Expr *Step) {
1219   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPLinearClause),
1220                                                   llvm::alignOf<Expr *>()) +
1221                          sizeof(Expr *) * (VL.size() + 1));
1222   OMPLinearClause *Clause = new (Mem)
1223       OMPLinearClause(StartLoc, LParenLoc, ColonLoc, EndLoc, VL.size());
1224   Clause->setVarRefs(VL);
1225   Clause->setStep(Step);
1226   return Clause;
1227 }
1228 
1229 OMPLinearClause *OMPLinearClause::CreateEmpty(const ASTContext &C,
1230                                               unsigned NumVars) {
1231   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPLinearClause),
1232                                                   llvm::alignOf<Expr *>()) +
1233                          sizeof(Expr *) * (NumVars + 1));
1234   return new (Mem) OMPLinearClause(NumVars);
1235 }
1236 
1237 OMPAlignedClause *
1238 OMPAlignedClause::Create(const ASTContext &C, SourceLocation StartLoc,
1239                          SourceLocation LParenLoc, SourceLocation ColonLoc,
1240                          SourceLocation EndLoc, ArrayRef<Expr *> VL, Expr *A) {
1241   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPAlignedClause),
1242                                                   llvm::alignOf<Expr *>()) +
1243                          sizeof(Expr *) * (VL.size() + 1));
1244   OMPAlignedClause *Clause = new (Mem)
1245       OMPAlignedClause(StartLoc, LParenLoc, ColonLoc, EndLoc, VL.size());
1246   Clause->setVarRefs(VL);
1247   Clause->setAlignment(A);
1248   return Clause;
1249 }
1250 
1251 OMPAlignedClause *OMPAlignedClause::CreateEmpty(const ASTContext &C,
1252                                                 unsigned NumVars) {
1253   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPAlignedClause),
1254                                                   llvm::alignOf<Expr *>()) +
1255                          sizeof(Expr *) * (NumVars + 1));
1256   return new (Mem) OMPAlignedClause(NumVars);
1257 }
1258 
1259 OMPCopyinClause *OMPCopyinClause::Create(const ASTContext &C,
1260                                          SourceLocation StartLoc,
1261                                          SourceLocation LParenLoc,
1262                                          SourceLocation EndLoc,
1263                                          ArrayRef<Expr *> VL) {
1264   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPCopyinClause),
1265                                                   llvm::alignOf<Expr *>()) +
1266                          sizeof(Expr *) * VL.size());
1267   OMPCopyinClause *Clause = new (Mem) OMPCopyinClause(StartLoc, LParenLoc,
1268                                                       EndLoc, VL.size());
1269   Clause->setVarRefs(VL);
1270   return Clause;
1271 }
1272 
1273 OMPCopyinClause *OMPCopyinClause::CreateEmpty(const ASTContext &C,
1274                                               unsigned N) {
1275   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPCopyinClause),
1276                                                   llvm::alignOf<Expr *>()) +
1277                          sizeof(Expr *) * N);
1278   return new (Mem) OMPCopyinClause(N);
1279 }
1280 
1281 OMPCopyprivateClause *OMPCopyprivateClause::Create(const ASTContext &C,
1282                                                    SourceLocation StartLoc,
1283                                                    SourceLocation LParenLoc,
1284                                                    SourceLocation EndLoc,
1285                                                    ArrayRef<Expr *> VL) {
1286   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPCopyprivateClause),
1287                                                   llvm::alignOf<Expr *>()) +
1288                          sizeof(Expr *) * VL.size());
1289   OMPCopyprivateClause *Clause =
1290       new (Mem) OMPCopyprivateClause(StartLoc, LParenLoc, EndLoc, VL.size());
1291   Clause->setVarRefs(VL);
1292   return Clause;
1293 }
1294 
1295 OMPCopyprivateClause *OMPCopyprivateClause::CreateEmpty(const ASTContext &C,
1296                                                         unsigned N) {
1297   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPCopyprivateClause),
1298                                                   llvm::alignOf<Expr *>()) +
1299                          sizeof(Expr *) * N);
1300   return new (Mem) OMPCopyprivateClause(N);
1301 }
1302 
1303 void OMPExecutableDirective::setClauses(ArrayRef<OMPClause *> Clauses) {
1304   assert(Clauses.size() == getNumClauses() &&
1305          "Number of clauses is not the same as the preallocated buffer");
1306   std::copy(Clauses.begin(), Clauses.end(), getClauses().begin());
1307 }
1308 
1309 OMPReductionClause *OMPReductionClause::Create(
1310     const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc,
1311     SourceLocation EndLoc, SourceLocation ColonLoc, ArrayRef<Expr *> VL,
1312     NestedNameSpecifierLoc QualifierLoc, const DeclarationNameInfo &NameInfo) {
1313   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPReductionClause),
1314                                                   llvm::alignOf<Expr *>()) +
1315                          sizeof(Expr *) * VL.size());
1316   OMPReductionClause *Clause = new (Mem) OMPReductionClause(
1317       StartLoc, LParenLoc, EndLoc, ColonLoc, VL.size(), QualifierLoc, NameInfo);
1318   Clause->setVarRefs(VL);
1319   return Clause;
1320 }
1321 
1322 OMPReductionClause *OMPReductionClause::CreateEmpty(const ASTContext &C,
1323                                                     unsigned N) {
1324   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPReductionClause),
1325                                                   llvm::alignOf<Expr *>()) +
1326                          sizeof(Expr *) * N);
1327   return new (Mem) OMPReductionClause(N);
1328 }
1329 
1330 OMPFlushClause *OMPFlushClause::Create(const ASTContext &C,
1331                                        SourceLocation StartLoc,
1332                                        SourceLocation LParenLoc,
1333                                        SourceLocation EndLoc,
1334                                        ArrayRef<Expr *> VL) {
1335   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPFlushClause),
1336                                                   llvm::alignOf<Expr *>()) +
1337                          sizeof(Expr *) * VL.size());
1338   OMPFlushClause *Clause =
1339       new (Mem) OMPFlushClause(StartLoc, LParenLoc, EndLoc, VL.size());
1340   Clause->setVarRefs(VL);
1341   return Clause;
1342 }
1343 
1344 OMPFlushClause *OMPFlushClause::CreateEmpty(const ASTContext &C, unsigned N) {
1345   void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPFlushClause),
1346                                                   llvm::alignOf<Expr *>()) +
1347                          sizeof(Expr *) * N);
1348   return new (Mem) OMPFlushClause(N);
1349 }
1350 
1351 OMPParallelDirective *OMPParallelDirective::Create(
1352                                               const ASTContext &C,
1353                                               SourceLocation StartLoc,
1354                                               SourceLocation EndLoc,
1355                                               ArrayRef<OMPClause *> Clauses,
1356                                               Stmt *AssociatedStmt) {
1357   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPParallelDirective),
1358                                            llvm::alignOf<OMPClause *>());
1359   void *Mem = C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() +
1360                          sizeof(Stmt *));
1361   OMPParallelDirective *Dir = new (Mem) OMPParallelDirective(StartLoc, EndLoc,
1362                                                              Clauses.size());
1363   Dir->setClauses(Clauses);
1364   Dir->setAssociatedStmt(AssociatedStmt);
1365   return Dir;
1366 }
1367 
1368 OMPParallelDirective *OMPParallelDirective::CreateEmpty(const ASTContext &C,
1369                                                         unsigned NumClauses,
1370                                                         EmptyShell) {
1371   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPParallelDirective),
1372                                            llvm::alignOf<OMPClause *>());
1373   void *Mem = C.Allocate(Size + sizeof(OMPClause *) * NumClauses +
1374                          sizeof(Stmt *));
1375   return new (Mem) OMPParallelDirective(NumClauses);
1376 }
1377 
1378 OMPSimdDirective *
1379 OMPSimdDirective::Create(const ASTContext &C, SourceLocation StartLoc,
1380                          SourceLocation EndLoc, unsigned CollapsedNum,
1381                          ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt) {
1382   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSimdDirective),
1383                                            llvm::alignOf<OMPClause *>());
1384   void *Mem =
1385       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
1386   OMPSimdDirective *Dir = new (Mem)
1387       OMPSimdDirective(StartLoc, EndLoc, CollapsedNum, Clauses.size());
1388   Dir->setClauses(Clauses);
1389   Dir->setAssociatedStmt(AssociatedStmt);
1390   return Dir;
1391 }
1392 
1393 OMPSimdDirective *OMPSimdDirective::CreateEmpty(const ASTContext &C,
1394                                                 unsigned NumClauses,
1395                                                 unsigned CollapsedNum,
1396                                                 EmptyShell) {
1397   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSimdDirective),
1398                                            llvm::alignOf<OMPClause *>());
1399   void *Mem =
1400       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
1401   return new (Mem) OMPSimdDirective(CollapsedNum, NumClauses);
1402 }
1403 
1404 OMPForDirective *
1405 OMPForDirective::Create(const ASTContext &C, SourceLocation StartLoc,
1406                         SourceLocation EndLoc, unsigned CollapsedNum,
1407                         ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt) {
1408   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPForDirective),
1409                                            llvm::alignOf<OMPClause *>());
1410   void *Mem =
1411       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
1412   OMPForDirective *Dir =
1413       new (Mem) OMPForDirective(StartLoc, EndLoc, CollapsedNum, Clauses.size());
1414   Dir->setClauses(Clauses);
1415   Dir->setAssociatedStmt(AssociatedStmt);
1416   return Dir;
1417 }
1418 
1419 OMPForDirective *OMPForDirective::CreateEmpty(const ASTContext &C,
1420                                               unsigned NumClauses,
1421                                               unsigned CollapsedNum,
1422                                               EmptyShell) {
1423   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPForDirective),
1424                                            llvm::alignOf<OMPClause *>());
1425   void *Mem =
1426       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
1427   return new (Mem) OMPForDirective(CollapsedNum, NumClauses);
1428 }
1429 
1430 OMPSectionsDirective *OMPSectionsDirective::Create(
1431     const ASTContext &C, SourceLocation StartLoc, SourceLocation EndLoc,
1432     ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt) {
1433   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSectionsDirective),
1434                                            llvm::alignOf<OMPClause *>());
1435   void *Mem =
1436       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
1437   OMPSectionsDirective *Dir =
1438       new (Mem) OMPSectionsDirective(StartLoc, EndLoc, Clauses.size());
1439   Dir->setClauses(Clauses);
1440   Dir->setAssociatedStmt(AssociatedStmt);
1441   return Dir;
1442 }
1443 
1444 OMPSectionsDirective *OMPSectionsDirective::CreateEmpty(const ASTContext &C,
1445                                                         unsigned NumClauses,
1446                                                         EmptyShell) {
1447   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSectionsDirective),
1448                                            llvm::alignOf<OMPClause *>());
1449   void *Mem =
1450       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
1451   return new (Mem) OMPSectionsDirective(NumClauses);
1452 }
1453 
1454 OMPSectionDirective *OMPSectionDirective::Create(const ASTContext &C,
1455                                                  SourceLocation StartLoc,
1456                                                  SourceLocation EndLoc,
1457                                                  Stmt *AssociatedStmt) {
1458   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSectionsDirective),
1459                                            llvm::alignOf<Stmt *>());
1460   void *Mem = C.Allocate(Size + sizeof(Stmt *));
1461   OMPSectionDirective *Dir = new (Mem) OMPSectionDirective(StartLoc, EndLoc);
1462   Dir->setAssociatedStmt(AssociatedStmt);
1463   return Dir;
1464 }
1465 
1466 OMPSectionDirective *OMPSectionDirective::CreateEmpty(const ASTContext &C,
1467                                                       EmptyShell) {
1468   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSectionDirective),
1469                                            llvm::alignOf<Stmt *>());
1470   void *Mem = C.Allocate(Size + sizeof(Stmt *));
1471   return new (Mem) OMPSectionDirective();
1472 }
1473 
1474 OMPSingleDirective *OMPSingleDirective::Create(const ASTContext &C,
1475                                                SourceLocation StartLoc,
1476                                                SourceLocation EndLoc,
1477                                                ArrayRef<OMPClause *> Clauses,
1478                                                Stmt *AssociatedStmt) {
1479   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSingleDirective),
1480                                            llvm::alignOf<OMPClause *>());
1481   void *Mem =
1482       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
1483   OMPSingleDirective *Dir =
1484       new (Mem) OMPSingleDirective(StartLoc, EndLoc, Clauses.size());
1485   Dir->setClauses(Clauses);
1486   Dir->setAssociatedStmt(AssociatedStmt);
1487   return Dir;
1488 }
1489 
1490 OMPSingleDirective *OMPSingleDirective::CreateEmpty(const ASTContext &C,
1491                                                     unsigned NumClauses,
1492                                                     EmptyShell) {
1493   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPSingleDirective),
1494                                            llvm::alignOf<OMPClause *>());
1495   void *Mem =
1496       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
1497   return new (Mem) OMPSingleDirective(NumClauses);
1498 }
1499 
1500 OMPMasterDirective *OMPMasterDirective::Create(const ASTContext &C,
1501                                                SourceLocation StartLoc,
1502                                                SourceLocation EndLoc,
1503                                                Stmt *AssociatedStmt) {
1504   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPMasterDirective),
1505                                            llvm::alignOf<Stmt *>());
1506   void *Mem = C.Allocate(Size + sizeof(Stmt *));
1507   OMPMasterDirective *Dir = new (Mem) OMPMasterDirective(StartLoc, EndLoc);
1508   Dir->setAssociatedStmt(AssociatedStmt);
1509   return Dir;
1510 }
1511 
1512 OMPMasterDirective *OMPMasterDirective::CreateEmpty(const ASTContext &C,
1513                                                     EmptyShell) {
1514   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPMasterDirective),
1515                                            llvm::alignOf<Stmt *>());
1516   void *Mem = C.Allocate(Size + sizeof(Stmt *));
1517   return new (Mem) OMPMasterDirective();
1518 }
1519 
1520 OMPCriticalDirective *OMPCriticalDirective::Create(
1521     const ASTContext &C, const DeclarationNameInfo &Name,
1522     SourceLocation StartLoc, SourceLocation EndLoc, Stmt *AssociatedStmt) {
1523   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPCriticalDirective),
1524                                            llvm::alignOf<Stmt *>());
1525   void *Mem = C.Allocate(Size + sizeof(Stmt *));
1526   OMPCriticalDirective *Dir =
1527       new (Mem) OMPCriticalDirective(Name, StartLoc, EndLoc);
1528   Dir->setAssociatedStmt(AssociatedStmt);
1529   return Dir;
1530 }
1531 
1532 OMPCriticalDirective *OMPCriticalDirective::CreateEmpty(const ASTContext &C,
1533                                                         EmptyShell) {
1534   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPCriticalDirective),
1535                                            llvm::alignOf<Stmt *>());
1536   void *Mem = C.Allocate(Size + sizeof(Stmt *));
1537   return new (Mem) OMPCriticalDirective();
1538 }
1539 
1540 OMPParallelForDirective *
1541 OMPParallelForDirective::Create(const ASTContext &C, SourceLocation StartLoc,
1542                                 SourceLocation EndLoc, unsigned CollapsedNum,
1543                                 ArrayRef<OMPClause *> Clauses,
1544                                 Stmt *AssociatedStmt) {
1545   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPParallelForDirective),
1546                                            llvm::alignOf<OMPClause *>());
1547   void *Mem =
1548       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
1549   OMPParallelForDirective *Dir = new (Mem)
1550       OMPParallelForDirective(StartLoc, EndLoc, CollapsedNum, Clauses.size());
1551   Dir->setClauses(Clauses);
1552   Dir->setAssociatedStmt(AssociatedStmt);
1553   return Dir;
1554 }
1555 
1556 OMPParallelForDirective *
1557 OMPParallelForDirective::CreateEmpty(const ASTContext &C, unsigned NumClauses,
1558                                      unsigned CollapsedNum, EmptyShell) {
1559   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPParallelForDirective),
1560                                            llvm::alignOf<OMPClause *>());
1561   void *Mem =
1562       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
1563   return new (Mem) OMPParallelForDirective(CollapsedNum, NumClauses);
1564 }
1565 
1566 OMPParallelSectionsDirective *OMPParallelSectionsDirective::Create(
1567     const ASTContext &C, SourceLocation StartLoc, SourceLocation EndLoc,
1568     ArrayRef<OMPClause *> Clauses, Stmt *AssociatedStmt) {
1569   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPParallelSectionsDirective),
1570                                            llvm::alignOf<OMPClause *>());
1571   void *Mem =
1572       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
1573   OMPParallelSectionsDirective *Dir =
1574       new (Mem) OMPParallelSectionsDirective(StartLoc, EndLoc, Clauses.size());
1575   Dir->setClauses(Clauses);
1576   Dir->setAssociatedStmt(AssociatedStmt);
1577   return Dir;
1578 }
1579 
1580 OMPParallelSectionsDirective *
1581 OMPParallelSectionsDirective::CreateEmpty(const ASTContext &C,
1582                                           unsigned NumClauses, EmptyShell) {
1583   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPParallelSectionsDirective),
1584                                            llvm::alignOf<OMPClause *>());
1585   void *Mem =
1586       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
1587   return new (Mem) OMPParallelSectionsDirective(NumClauses);
1588 }
1589 
1590 OMPTaskDirective *OMPTaskDirective::Create(const ASTContext &C,
1591                                            SourceLocation StartLoc,
1592                                            SourceLocation EndLoc,
1593                                            ArrayRef<OMPClause *> Clauses,
1594                                            Stmt *AssociatedStmt) {
1595   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPTaskDirective),
1596                                            llvm::alignOf<OMPClause *>());
1597   void *Mem =
1598       C.Allocate(Size + sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *));
1599   OMPTaskDirective *Dir =
1600       new (Mem) OMPTaskDirective(StartLoc, EndLoc, Clauses.size());
1601   Dir->setClauses(Clauses);
1602   Dir->setAssociatedStmt(AssociatedStmt);
1603   return Dir;
1604 }
1605 
1606 OMPTaskDirective *OMPTaskDirective::CreateEmpty(const ASTContext &C,
1607                                                 unsigned NumClauses,
1608                                                 EmptyShell) {
1609   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPTaskDirective),
1610                                            llvm::alignOf<OMPClause *>());
1611   void *Mem =
1612       C.Allocate(Size + sizeof(OMPClause *) * NumClauses + sizeof(Stmt *));
1613   return new (Mem) OMPTaskDirective(NumClauses);
1614 }
1615 
1616 OMPTaskyieldDirective *OMPTaskyieldDirective::Create(const ASTContext &C,
1617                                                      SourceLocation StartLoc,
1618                                                      SourceLocation EndLoc) {
1619   void *Mem = C.Allocate(sizeof(OMPTaskyieldDirective));
1620   OMPTaskyieldDirective *Dir =
1621       new (Mem) OMPTaskyieldDirective(StartLoc, EndLoc);
1622   return Dir;
1623 }
1624 
1625 OMPTaskyieldDirective *OMPTaskyieldDirective::CreateEmpty(const ASTContext &C,
1626                                                           EmptyShell) {
1627   void *Mem = C.Allocate(sizeof(OMPTaskyieldDirective));
1628   return new (Mem) OMPTaskyieldDirective();
1629 }
1630 
1631 OMPBarrierDirective *OMPBarrierDirective::Create(const ASTContext &C,
1632                                                  SourceLocation StartLoc,
1633                                                  SourceLocation EndLoc) {
1634   void *Mem = C.Allocate(sizeof(OMPBarrierDirective));
1635   OMPBarrierDirective *Dir = new (Mem) OMPBarrierDirective(StartLoc, EndLoc);
1636   return Dir;
1637 }
1638 
1639 OMPBarrierDirective *OMPBarrierDirective::CreateEmpty(const ASTContext &C,
1640                                                       EmptyShell) {
1641   void *Mem = C.Allocate(sizeof(OMPBarrierDirective));
1642   return new (Mem) OMPBarrierDirective();
1643 }
1644 
1645 OMPTaskwaitDirective *OMPTaskwaitDirective::Create(const ASTContext &C,
1646                                                    SourceLocation StartLoc,
1647                                                    SourceLocation EndLoc) {
1648   void *Mem = C.Allocate(sizeof(OMPTaskwaitDirective));
1649   OMPTaskwaitDirective *Dir = new (Mem) OMPTaskwaitDirective(StartLoc, EndLoc);
1650   return Dir;
1651 }
1652 
1653 OMPTaskwaitDirective *OMPTaskwaitDirective::CreateEmpty(const ASTContext &C,
1654                                                         EmptyShell) {
1655   void *Mem = C.Allocate(sizeof(OMPTaskwaitDirective));
1656   return new (Mem) OMPTaskwaitDirective();
1657 }
1658 
1659 OMPFlushDirective *OMPFlushDirective::Create(const ASTContext &C,
1660                                              SourceLocation StartLoc,
1661                                              SourceLocation EndLoc,
1662                                              ArrayRef<OMPClause *> Clauses) {
1663   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPFlushDirective),
1664                                            llvm::alignOf<OMPClause *>());
1665   void *Mem = C.Allocate(Size + sizeof(OMPClause *) * Clauses.size());
1666   OMPFlushDirective *Dir =
1667       new (Mem) OMPFlushDirective(StartLoc, EndLoc, Clauses.size());
1668   Dir->setClauses(Clauses);
1669   return Dir;
1670 }
1671 
1672 OMPFlushDirective *OMPFlushDirective::CreateEmpty(const ASTContext &C,
1673                                                   unsigned NumClauses,
1674                                                   EmptyShell) {
1675   unsigned Size = llvm::RoundUpToAlignment(sizeof(OMPFlushDirective),
1676                                            llvm::alignOf<OMPClause *>());
1677   void *Mem = C.Allocate(Size + sizeof(OMPClause *) * NumClauses);
1678   return new (Mem) OMPFlushDirective(NumClauses);
1679 }
1680 
1681