1221 lines
		
	
	
		
			41 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			1221 lines
		
	
	
		
			41 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| //===--- Stmt.cpp - Statement AST Node Implementation ---------------------===//
 | |
| //
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| //                     The LLVM Compiler Infrastructure
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| //
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| // This file is distributed under the University of Illinois Open Source
 | |
| // License. See LICENSE.TXT for details.
 | |
| //
 | |
| //===----------------------------------------------------------------------===//
 | |
| //
 | |
| // This file implements the Stmt class and statement subclasses.
 | |
| //
 | |
| //===----------------------------------------------------------------------===//
 | |
| 
 | |
| #include "clang/AST/ASTContext.h"
 | |
| #include "clang/AST/ASTDiagnostic.h"
 | |
| #include "clang/AST/ExprCXX.h"
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| #include "clang/AST/ExprObjC.h"
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| #include "clang/AST/Stmt.h"
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| #include "clang/AST/StmtCXX.h"
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| #include "clang/AST/StmtObjC.h"
 | |
| #include "clang/AST/StmtOpenMP.h"
 | |
| #include "clang/AST/Type.h"
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| #include "clang/Basic/CharInfo.h"
 | |
| #include "clang/Basic/TargetInfo.h"
 | |
| #include "clang/Lex/Token.h"
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| #include "llvm/ADT/StringExtras.h"
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| #include "llvm/Support/raw_ostream.h"
 | |
| using namespace clang;
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| 
 | |
| static struct StmtClassNameTable {
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|   const char *Name;
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|   unsigned Counter;
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|   unsigned Size;
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| } StmtClassInfo[Stmt::lastStmtConstant+1];
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| 
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| static StmtClassNameTable &getStmtInfoTableEntry(Stmt::StmtClass E) {
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|   static bool Initialized = false;
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|   if (Initialized)
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|     return StmtClassInfo[E];
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| 
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|   // Intialize the table on the first use.
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|   Initialized = true;
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| #define ABSTRACT_STMT(STMT)
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| #define STMT(CLASS, PARENT) \
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|   StmtClassInfo[(unsigned)Stmt::CLASS##Class].Name = #CLASS;    \
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|   StmtClassInfo[(unsigned)Stmt::CLASS##Class].Size = sizeof(CLASS);
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| #include "clang/AST/StmtNodes.inc"
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| 
 | |
|   return StmtClassInfo[E];
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| }
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| 
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| void *Stmt::operator new(size_t bytes, const ASTContext& C,
 | |
|                          unsigned alignment) {
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|   return ::operator new(bytes, C, alignment);
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| }
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| 
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| const char *Stmt::getStmtClassName() const {
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|   return getStmtInfoTableEntry((StmtClass) StmtBits.sClass).Name;
 | |
| }
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| 
 | |
| void Stmt::PrintStats() {
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|   // Ensure the table is primed.
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|   getStmtInfoTableEntry(Stmt::NullStmtClass);
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| 
 | |
|   unsigned sum = 0;
 | |
|   llvm::errs() << "\n*** Stmt/Expr Stats:\n";
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|   for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
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|     if (StmtClassInfo[i].Name == 0) continue;
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|     sum += StmtClassInfo[i].Counter;
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|   }
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|   llvm::errs() << "  " << sum << " stmts/exprs total.\n";
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|   sum = 0;
 | |
|   for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
 | |
|     if (StmtClassInfo[i].Name == 0) continue;
 | |
|     if (StmtClassInfo[i].Counter == 0) continue;
 | |
|     llvm::errs() << "    " << StmtClassInfo[i].Counter << " "
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|                  << StmtClassInfo[i].Name << ", " << StmtClassInfo[i].Size
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|                  << " each (" << StmtClassInfo[i].Counter*StmtClassInfo[i].Size
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|                  << " bytes)\n";
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|     sum += StmtClassInfo[i].Counter*StmtClassInfo[i].Size;
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|   }
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| 
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|   llvm::errs() << "Total bytes = " << sum << "\n";
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| }
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| 
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| void Stmt::addStmtClass(StmtClass s) {
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|   ++getStmtInfoTableEntry(s).Counter;
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| }
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| 
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| bool Stmt::StatisticsEnabled = false;
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| void Stmt::EnableStatistics() {
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|   StatisticsEnabled = true;
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| }
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| 
 | |
| Stmt *Stmt::IgnoreImplicit() {
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|   Stmt *s = this;
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| 
 | |
|   if (ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(s))
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|     s = ewc->getSubExpr();
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| 
 | |
|   while (ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(s))
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|     s = ice->getSubExpr();
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| 
 | |
|   return s;
 | |
| }
 | |
| 
 | |
| /// \brief Strip off all label-like statements.
 | |
| ///
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| /// This will strip off label statements, case statements, attributed
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| /// statements and default statements recursively.
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| const Stmt *Stmt::stripLabelLikeStatements() const {
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|   const Stmt *S = this;
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|   while (true) {
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|     if (const LabelStmt *LS = dyn_cast<LabelStmt>(S))
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|       S = LS->getSubStmt();
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|     else if (const SwitchCase *SC = dyn_cast<SwitchCase>(S))
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|       S = SC->getSubStmt();
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|     else if (const AttributedStmt *AS = dyn_cast<AttributedStmt>(S))
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|       S = AS->getSubStmt();
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|     else
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|       return S;
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|   }
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| }
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| 
 | |
| namespace {
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|   struct good {};
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|   struct bad {};
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| 
 | |
|   // These silly little functions have to be static inline to suppress
 | |
|   // unused warnings, and they have to be defined to suppress other
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|   // warnings.
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|   static inline good is_good(good) { return good(); }
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| 
 | |
|   typedef Stmt::child_range children_t();
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|   template <class T> good implements_children(children_t T::*) {
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|     return good();
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|   }
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|   LLVM_ATTRIBUTE_UNUSED
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|   static inline bad implements_children(children_t Stmt::*) {
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|     return bad();
 | |
|   }
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| 
 | |
|   typedef SourceLocation getLocStart_t() const;
 | |
|   template <class T> good implements_getLocStart(getLocStart_t T::*) {
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|     return good();
 | |
|   }
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|   LLVM_ATTRIBUTE_UNUSED
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|   static inline bad implements_getLocStart(getLocStart_t Stmt::*) {
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|     return bad();
 | |
|   }
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| 
 | |
|   typedef SourceLocation getLocEnd_t() const;
 | |
|   template <class T> good implements_getLocEnd(getLocEnd_t T::*) {
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|     return good();
 | |
|   }
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|   LLVM_ATTRIBUTE_UNUSED
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|   static inline bad implements_getLocEnd(getLocEnd_t Stmt::*) {
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|     return bad();
 | |
|   }
 | |
| 
 | |
| #define ASSERT_IMPLEMENTS_children(type) \
 | |
|   (void) is_good(implements_children(&type::children))
 | |
| #define ASSERT_IMPLEMENTS_getLocStart(type) \
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|   (void) is_good(implements_getLocStart(&type::getLocStart))
 | |
| #define ASSERT_IMPLEMENTS_getLocEnd(type) \
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|   (void) is_good(implements_getLocEnd(&type::getLocEnd))
 | |
| }
 | |
| 
 | |
| /// Check whether the various Stmt classes implement their member
 | |
| /// functions.
 | |
| LLVM_ATTRIBUTE_UNUSED
 | |
| static inline void check_implementations() {
 | |
| #define ABSTRACT_STMT(type)
 | |
| #define STMT(type, base) \
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|   ASSERT_IMPLEMENTS_children(type); \
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|   ASSERT_IMPLEMENTS_getLocStart(type); \
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|   ASSERT_IMPLEMENTS_getLocEnd(type);
 | |
| #include "clang/AST/StmtNodes.inc"
 | |
| }
 | |
| 
 | |
| Stmt::child_range Stmt::children() {
 | |
|   switch (getStmtClass()) {
 | |
|   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
 | |
| #define ABSTRACT_STMT(type)
 | |
| #define STMT(type, base) \
 | |
|   case Stmt::type##Class: \
 | |
|     return static_cast<type*>(this)->children();
 | |
| #include "clang/AST/StmtNodes.inc"
 | |
|   }
 | |
|   llvm_unreachable("unknown statement kind!");
 | |
| }
 | |
| 
 | |
| // Amusing macro metaprogramming hack: check whether a class provides
 | |
| // a more specific implementation of getSourceRange.
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| //
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| // See also Expr.cpp:getExprLoc().
 | |
| namespace {
 | |
|   /// This implementation is used when a class provides a custom
 | |
|   /// implementation of getSourceRange.
 | |
|   template <class S, class T>
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|   SourceRange getSourceRangeImpl(const Stmt *stmt,
 | |
|                                  SourceRange (T::*v)() const) {
 | |
|     return static_cast<const S*>(stmt)->getSourceRange();
 | |
|   }
 | |
| 
 | |
|   /// This implementation is used when a class doesn't provide a custom
 | |
|   /// implementation of getSourceRange.  Overload resolution should pick it over
 | |
|   /// the implementation above because it's more specialized according to
 | |
|   /// function template partial ordering.
 | |
|   template <class S>
 | |
|   SourceRange getSourceRangeImpl(const Stmt *stmt,
 | |
|                                  SourceRange (Stmt::*v)() const) {
 | |
|     return SourceRange(static_cast<const S*>(stmt)->getLocStart(),
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|                        static_cast<const S*>(stmt)->getLocEnd());
 | |
|   }
 | |
| }
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| 
 | |
| SourceRange Stmt::getSourceRange() const {
 | |
|   switch (getStmtClass()) {
 | |
|   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
 | |
| #define ABSTRACT_STMT(type)
 | |
| #define STMT(type, base) \
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|   case Stmt::type##Class: \
 | |
|     return getSourceRangeImpl<type>(this, &type::getSourceRange);
 | |
| #include "clang/AST/StmtNodes.inc"
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|   }
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|   llvm_unreachable("unknown statement kind!");
 | |
| }
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| 
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| SourceLocation Stmt::getLocStart() const {
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| //  llvm::errs() << "getLocStart() for " << getStmtClassName() << "\n";
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|   switch (getStmtClass()) {
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|   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
 | |
| #define ABSTRACT_STMT(type)
 | |
| #define STMT(type, base) \
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|   case Stmt::type##Class: \
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|     return static_cast<const type*>(this)->getLocStart();
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| #include "clang/AST/StmtNodes.inc"
 | |
|   }
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|   llvm_unreachable("unknown statement kind");
 | |
| }
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| 
 | |
| SourceLocation Stmt::getLocEnd() const {
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|   switch (getStmtClass()) {
 | |
|   case Stmt::NoStmtClass: llvm_unreachable("statement without class");
 | |
| #define ABSTRACT_STMT(type)
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| #define STMT(type, base) \
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|   case Stmt::type##Class: \
 | |
|     return static_cast<const type*>(this)->getLocEnd();
 | |
| #include "clang/AST/StmtNodes.inc"
 | |
|   }
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|   llvm_unreachable("unknown statement kind");
 | |
| }
 | |
| 
 | |
| CompoundStmt::CompoundStmt(const ASTContext &C, ArrayRef<Stmt*> Stmts,
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|                            SourceLocation LB, SourceLocation RB)
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|   : Stmt(CompoundStmtClass), LBracLoc(LB), RBracLoc(RB) {
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|   CompoundStmtBits.NumStmts = Stmts.size();
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|   assert(CompoundStmtBits.NumStmts == Stmts.size() &&
 | |
|          "NumStmts doesn't fit in bits of CompoundStmtBits.NumStmts!");
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| 
 | |
|   if (Stmts.size() == 0) {
 | |
|     Body = 0;
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   Body = new (C) Stmt*[Stmts.size()];
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|   std::copy(Stmts.begin(), Stmts.end(), Body);
 | |
| }
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| 
 | |
| void CompoundStmt::setStmts(const ASTContext &C, Stmt **Stmts,
 | |
|                             unsigned NumStmts) {
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|   if (this->Body)
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|     C.Deallocate(Body);
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|   this->CompoundStmtBits.NumStmts = NumStmts;
 | |
| 
 | |
|   Body = new (C) Stmt*[NumStmts];
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|   memcpy(Body, Stmts, sizeof(Stmt *) * NumStmts);
 | |
| }
 | |
| 
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| const char *LabelStmt::getName() const {
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|   return getDecl()->getIdentifier()->getNameStart();
 | |
| }
 | |
| 
 | |
| AttributedStmt *AttributedStmt::Create(const ASTContext &C, SourceLocation Loc,
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|                                        ArrayRef<const Attr*> Attrs,
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|                                        Stmt *SubStmt) {
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|   void *Mem = C.Allocate(sizeof(AttributedStmt) +
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|                          sizeof(Attr*) * (Attrs.size() - 1),
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|                          llvm::alignOf<AttributedStmt>());
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|   return new (Mem) AttributedStmt(Loc, Attrs, SubStmt);
 | |
| }
 | |
| 
 | |
| AttributedStmt *AttributedStmt::CreateEmpty(const ASTContext &C,
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|                                             unsigned NumAttrs) {
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|   assert(NumAttrs > 0 && "NumAttrs should be greater than zero");
 | |
|   void *Mem = C.Allocate(sizeof(AttributedStmt) +
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|                          sizeof(Attr*) * (NumAttrs - 1),
 | |
|                          llvm::alignOf<AttributedStmt>());
 | |
|   return new (Mem) AttributedStmt(EmptyShell(), NumAttrs);
 | |
| }
 | |
| 
 | |
| std::string AsmStmt::generateAsmString(const ASTContext &C) const {
 | |
|   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
 | |
|     return gccAsmStmt->generateAsmString(C);
 | |
|   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
 | |
|     return msAsmStmt->generateAsmString(C);
 | |
|   llvm_unreachable("unknown asm statement kind!");
 | |
| }
 | |
| 
 | |
| StringRef AsmStmt::getOutputConstraint(unsigned i) const {
 | |
|   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
 | |
|     return gccAsmStmt->getOutputConstraint(i);
 | |
|   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
 | |
|     return msAsmStmt->getOutputConstraint(i);
 | |
|   llvm_unreachable("unknown asm statement kind!");
 | |
| }
 | |
| 
 | |
| const Expr *AsmStmt::getOutputExpr(unsigned i) const {
 | |
|   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
 | |
|     return gccAsmStmt->getOutputExpr(i);
 | |
|   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
 | |
|     return msAsmStmt->getOutputExpr(i);
 | |
|   llvm_unreachable("unknown asm statement kind!");
 | |
| }
 | |
| 
 | |
| StringRef AsmStmt::getInputConstraint(unsigned i) const {
 | |
|   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
 | |
|     return gccAsmStmt->getInputConstraint(i);
 | |
|   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
 | |
|     return msAsmStmt->getInputConstraint(i);
 | |
|   llvm_unreachable("unknown asm statement kind!");
 | |
| }
 | |
| 
 | |
| const Expr *AsmStmt::getInputExpr(unsigned i) const {
 | |
|   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
 | |
|     return gccAsmStmt->getInputExpr(i);
 | |
|   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
 | |
|     return msAsmStmt->getInputExpr(i);
 | |
|   llvm_unreachable("unknown asm statement kind!");
 | |
| }
 | |
| 
 | |
| StringRef AsmStmt::getClobber(unsigned i) const {
 | |
|   if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
 | |
|     return gccAsmStmt->getClobber(i);
 | |
|   if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
 | |
|     return msAsmStmt->getClobber(i);
 | |
|   llvm_unreachable("unknown asm statement kind!");
 | |
| }
 | |
| 
 | |
| /// getNumPlusOperands - Return the number of output operands that have a "+"
 | |
| /// constraint.
 | |
| unsigned AsmStmt::getNumPlusOperands() const {
 | |
|   unsigned Res = 0;
 | |
|   for (unsigned i = 0, e = getNumOutputs(); i != e; ++i)
 | |
|     if (isOutputPlusConstraint(i))
 | |
|       ++Res;
 | |
|   return Res;
 | |
| }
 | |
| 
 | |
| StringRef GCCAsmStmt::getClobber(unsigned i) const {
 | |
|   return getClobberStringLiteral(i)->getString();
 | |
| }
 | |
| 
 | |
| Expr *GCCAsmStmt::getOutputExpr(unsigned i) {
 | |
|   return cast<Expr>(Exprs[i]);
 | |
| }
 | |
| 
 | |
| /// getOutputConstraint - Return the constraint string for the specified
 | |
| /// output operand.  All output constraints are known to be non-empty (either
 | |
| /// '=' or '+').
 | |
| StringRef GCCAsmStmt::getOutputConstraint(unsigned i) const {
 | |
|   return getOutputConstraintLiteral(i)->getString();
 | |
| }
 | |
| 
 | |
| Expr *GCCAsmStmt::getInputExpr(unsigned i) {
 | |
|   return cast<Expr>(Exprs[i + NumOutputs]);
 | |
| }
 | |
| void GCCAsmStmt::setInputExpr(unsigned i, Expr *E) {
 | |
|   Exprs[i + NumOutputs] = E;
 | |
| }
 | |
| 
 | |
| /// getInputConstraint - Return the specified input constraint.  Unlike output
 | |
| /// constraints, these can be empty.
 | |
| StringRef GCCAsmStmt::getInputConstraint(unsigned i) const {
 | |
|   return getInputConstraintLiteral(i)->getString();
 | |
| }
 | |
| 
 | |
| void GCCAsmStmt::setOutputsAndInputsAndClobbers(const ASTContext &C,
 | |
|                                                 IdentifierInfo **Names,
 | |
|                                                 StringLiteral **Constraints,
 | |
|                                                 Stmt **Exprs,
 | |
|                                                 unsigned NumOutputs,
 | |
|                                                 unsigned NumInputs,
 | |
|                                                 StringLiteral **Clobbers,
 | |
|                                                 unsigned NumClobbers) {
 | |
|   this->NumOutputs = NumOutputs;
 | |
|   this->NumInputs = NumInputs;
 | |
|   this->NumClobbers = NumClobbers;
 | |
| 
 | |
|   unsigned NumExprs = NumOutputs + NumInputs;
 | |
| 
 | |
|   C.Deallocate(this->Names);
 | |
|   this->Names = new (C) IdentifierInfo*[NumExprs];
 | |
|   std::copy(Names, Names + NumExprs, this->Names);
 | |
| 
 | |
|   C.Deallocate(this->Exprs);
 | |
|   this->Exprs = new (C) Stmt*[NumExprs];
 | |
|   std::copy(Exprs, Exprs + NumExprs, this->Exprs);
 | |
| 
 | |
|   C.Deallocate(this->Constraints);
 | |
|   this->Constraints = new (C) StringLiteral*[NumExprs];
 | |
|   std::copy(Constraints, Constraints + NumExprs, this->Constraints);
 | |
| 
 | |
|   C.Deallocate(this->Clobbers);
 | |
|   this->Clobbers = new (C) StringLiteral*[NumClobbers];
 | |
|   std::copy(Clobbers, Clobbers + NumClobbers, this->Clobbers);
 | |
| }
 | |
| 
 | |
| /// getNamedOperand - Given a symbolic operand reference like %[foo],
 | |
| /// translate this into a numeric value needed to reference the same operand.
 | |
| /// This returns -1 if the operand name is invalid.
 | |
| int GCCAsmStmt::getNamedOperand(StringRef SymbolicName) const {
 | |
|   unsigned NumPlusOperands = 0;
 | |
| 
 | |
|   // Check if this is an output operand.
 | |
|   for (unsigned i = 0, e = getNumOutputs(); i != e; ++i) {
 | |
|     if (getOutputName(i) == SymbolicName)
 | |
|       return i;
 | |
|   }
 | |
| 
 | |
|   for (unsigned i = 0, e = getNumInputs(); i != e; ++i)
 | |
|     if (getInputName(i) == SymbolicName)
 | |
|       return getNumOutputs() + NumPlusOperands + i;
 | |
| 
 | |
|   // Not found.
 | |
|   return -1;
 | |
| }
 | |
| 
 | |
| /// AnalyzeAsmString - Analyze the asm string of the current asm, decomposing
 | |
| /// it into pieces.  If the asm string is erroneous, emit errors and return
 | |
| /// true, otherwise return false.
 | |
| unsigned GCCAsmStmt::AnalyzeAsmString(SmallVectorImpl<AsmStringPiece>&Pieces,
 | |
|                                 const ASTContext &C, unsigned &DiagOffs) const {
 | |
|   StringRef Str = getAsmString()->getString();
 | |
|   const char *StrStart = Str.begin();
 | |
|   const char *StrEnd = Str.end();
 | |
|   const char *CurPtr = StrStart;
 | |
| 
 | |
|   // "Simple" inline asms have no constraints or operands, just convert the asm
 | |
|   // string to escape $'s.
 | |
|   if (isSimple()) {
 | |
|     std::string Result;
 | |
|     for (; CurPtr != StrEnd; ++CurPtr) {
 | |
|       switch (*CurPtr) {
 | |
|       case '$':
 | |
|         Result += "$$";
 | |
|         break;
 | |
|       default:
 | |
|         Result += *CurPtr;
 | |
|         break;
 | |
|       }
 | |
|     }
 | |
|     Pieces.push_back(AsmStringPiece(Result));
 | |
|     return 0;
 | |
|   }
 | |
| 
 | |
|   // CurStringPiece - The current string that we are building up as we scan the
 | |
|   // asm string.
 | |
|   std::string CurStringPiece;
 | |
| 
 | |
|   bool HasVariants = !C.getTargetInfo().hasNoAsmVariants();
 | |
| 
 | |
|   while (1) {
 | |
|     // Done with the string?
 | |
|     if (CurPtr == StrEnd) {
 | |
|       if (!CurStringPiece.empty())
 | |
|         Pieces.push_back(AsmStringPiece(CurStringPiece));
 | |
|       return 0;
 | |
|     }
 | |
| 
 | |
|     char CurChar = *CurPtr++;
 | |
|     switch (CurChar) {
 | |
|     case '$': CurStringPiece += "$$"; continue;
 | |
|     case '{': CurStringPiece += (HasVariants ? "$(" : "{"); continue;
 | |
|     case '|': CurStringPiece += (HasVariants ? "$|" : "|"); continue;
 | |
|     case '}': CurStringPiece += (HasVariants ? "$)" : "}"); continue;
 | |
|     case '%':
 | |
|       break;
 | |
|     default:
 | |
|       CurStringPiece += CurChar;
 | |
|       continue;
 | |
|     }
 | |
| 
 | |
|     // Escaped "%" character in asm string.
 | |
|     if (CurPtr == StrEnd) {
 | |
|       // % at end of string is invalid (no escape).
 | |
|       DiagOffs = CurPtr-StrStart-1;
 | |
|       return diag::err_asm_invalid_escape;
 | |
|     }
 | |
| 
 | |
|     char EscapedChar = *CurPtr++;
 | |
|     if (EscapedChar == '%') {  // %% -> %
 | |
|       // Escaped percentage sign.
 | |
|       CurStringPiece += '%';
 | |
|       continue;
 | |
|     }
 | |
| 
 | |
|     if (EscapedChar == '=') {  // %= -> Generate an unique ID.
 | |
|       CurStringPiece += "${:uid}";
 | |
|       continue;
 | |
|     }
 | |
| 
 | |
|     // Otherwise, we have an operand.  If we have accumulated a string so far,
 | |
|     // add it to the Pieces list.
 | |
|     if (!CurStringPiece.empty()) {
 | |
|       Pieces.push_back(AsmStringPiece(CurStringPiece));
 | |
|       CurStringPiece.clear();
 | |
|     }
 | |
| 
 | |
|     // Handle %x4 and %x[foo] by capturing x as the modifier character.
 | |
|     char Modifier = '\0';
 | |
|     if (isLetter(EscapedChar)) {
 | |
|       if (CurPtr == StrEnd) { // Premature end.
 | |
|         DiagOffs = CurPtr-StrStart-1;
 | |
|         return diag::err_asm_invalid_escape;
 | |
|       }
 | |
|       Modifier = EscapedChar;
 | |
|       EscapedChar = *CurPtr++;
 | |
|     }
 | |
| 
 | |
|     if (isDigit(EscapedChar)) {
 | |
|       // %n - Assembler operand n
 | |
|       unsigned N = 0;
 | |
| 
 | |
|       --CurPtr;
 | |
|       while (CurPtr != StrEnd && isDigit(*CurPtr))
 | |
|         N = N*10 + ((*CurPtr++)-'0');
 | |
| 
 | |
|       unsigned NumOperands =
 | |
|         getNumOutputs() + getNumPlusOperands() + getNumInputs();
 | |
|       if (N >= NumOperands) {
 | |
|         DiagOffs = CurPtr-StrStart-1;
 | |
|         return diag::err_asm_invalid_operand_number;
 | |
|       }
 | |
| 
 | |
|       Pieces.push_back(AsmStringPiece(N, Modifier));
 | |
|       continue;
 | |
|     }
 | |
| 
 | |
|     // Handle %[foo], a symbolic operand reference.
 | |
|     if (EscapedChar == '[') {
 | |
|       DiagOffs = CurPtr-StrStart-1;
 | |
| 
 | |
|       // Find the ']'.
 | |
|       const char *NameEnd = (const char*)memchr(CurPtr, ']', StrEnd-CurPtr);
 | |
|       if (NameEnd == 0)
 | |
|         return diag::err_asm_unterminated_symbolic_operand_name;
 | |
|       if (NameEnd == CurPtr)
 | |
|         return diag::err_asm_empty_symbolic_operand_name;
 | |
| 
 | |
|       StringRef SymbolicName(CurPtr, NameEnd - CurPtr);
 | |
| 
 | |
|       int N = getNamedOperand(SymbolicName);
 | |
|       if (N == -1) {
 | |
|         // Verify that an operand with that name exists.
 | |
|         DiagOffs = CurPtr-StrStart;
 | |
|         return diag::err_asm_unknown_symbolic_operand_name;
 | |
|       }
 | |
|       Pieces.push_back(AsmStringPiece(N, Modifier));
 | |
| 
 | |
|       CurPtr = NameEnd+1;
 | |
|       continue;
 | |
|     }
 | |
| 
 | |
|     DiagOffs = CurPtr-StrStart-1;
 | |
|     return diag::err_asm_invalid_escape;
 | |
|   }
 | |
| }
 | |
| 
 | |
| /// Assemble final IR asm string (GCC-style).
 | |
| std::string GCCAsmStmt::generateAsmString(const ASTContext &C) const {
 | |
|   // Analyze the asm string to decompose it into its pieces.  We know that Sema
 | |
|   // has already done this, so it is guaranteed to be successful.
 | |
|   SmallVector<GCCAsmStmt::AsmStringPiece, 4> Pieces;
 | |
|   unsigned DiagOffs;
 | |
|   AnalyzeAsmString(Pieces, C, DiagOffs);
 | |
| 
 | |
|   std::string AsmString;
 | |
|   for (unsigned i = 0, e = Pieces.size(); i != e; ++i) {
 | |
|     if (Pieces[i].isString())
 | |
|       AsmString += Pieces[i].getString();
 | |
|     else if (Pieces[i].getModifier() == '\0')
 | |
|       AsmString += '$' + llvm::utostr(Pieces[i].getOperandNo());
 | |
|     else
 | |
|       AsmString += "${" + llvm::utostr(Pieces[i].getOperandNo()) + ':' +
 | |
|                    Pieces[i].getModifier() + '}';
 | |
|   }
 | |
|   return AsmString;
 | |
| }
 | |
| 
 | |
| /// Assemble final IR asm string (MS-style).
 | |
| std::string MSAsmStmt::generateAsmString(const ASTContext &C) const {
 | |
|   // FIXME: This needs to be translated into the IR string representation.
 | |
|   return AsmStr;
 | |
| }
 | |
| 
 | |
| Expr *MSAsmStmt::getOutputExpr(unsigned i) {
 | |
|   return cast<Expr>(Exprs[i]);
 | |
| }
 | |
| 
 | |
| Expr *MSAsmStmt::getInputExpr(unsigned i) {
 | |
|   return cast<Expr>(Exprs[i + NumOutputs]);
 | |
| }
 | |
| void MSAsmStmt::setInputExpr(unsigned i, Expr *E) {
 | |
|   Exprs[i + NumOutputs] = E;
 | |
| }
 | |
| 
 | |
| QualType CXXCatchStmt::getCaughtType() const {
 | |
|   if (ExceptionDecl)
 | |
|     return ExceptionDecl->getType();
 | |
|   return QualType();
 | |
| }
 | |
| 
 | |
| //===----------------------------------------------------------------------===//
 | |
| // Constructors
 | |
| //===----------------------------------------------------------------------===//
 | |
| 
 | |
| GCCAsmStmt::GCCAsmStmt(const ASTContext &C, SourceLocation asmloc,
 | |
|                        bool issimple, bool isvolatile, unsigned numoutputs,
 | |
|                        unsigned numinputs, IdentifierInfo **names,
 | |
|                        StringLiteral **constraints, Expr **exprs,
 | |
|                        StringLiteral *asmstr, unsigned numclobbers,
 | |
|                        StringLiteral **clobbers, SourceLocation rparenloc)
 | |
|   : AsmStmt(GCCAsmStmtClass, asmloc, issimple, isvolatile, numoutputs,
 | |
|             numinputs, numclobbers), RParenLoc(rparenloc), AsmStr(asmstr) {
 | |
| 
 | |
|   unsigned NumExprs = NumOutputs + NumInputs;
 | |
| 
 | |
|   Names = new (C) IdentifierInfo*[NumExprs];
 | |
|   std::copy(names, names + NumExprs, Names);
 | |
| 
 | |
|   Exprs = new (C) Stmt*[NumExprs];
 | |
|   std::copy(exprs, exprs + NumExprs, Exprs);
 | |
| 
 | |
|   Constraints = new (C) StringLiteral*[NumExprs];
 | |
|   std::copy(constraints, constraints + NumExprs, Constraints);
 | |
| 
 | |
|   Clobbers = new (C) StringLiteral*[NumClobbers];
 | |
|   std::copy(clobbers, clobbers + NumClobbers, Clobbers);
 | |
| }
 | |
| 
 | |
| MSAsmStmt::MSAsmStmt(const ASTContext &C, SourceLocation asmloc,
 | |
|                      SourceLocation lbraceloc, bool issimple, bool isvolatile,
 | |
|                      ArrayRef<Token> asmtoks, unsigned numoutputs,
 | |
|                      unsigned numinputs,
 | |
|                      ArrayRef<StringRef> constraints, ArrayRef<Expr*> exprs,
 | |
|                      StringRef asmstr, ArrayRef<StringRef> clobbers,
 | |
|                      SourceLocation endloc)
 | |
|   : AsmStmt(MSAsmStmtClass, asmloc, issimple, isvolatile, numoutputs,
 | |
|             numinputs, clobbers.size()), LBraceLoc(lbraceloc),
 | |
|             EndLoc(endloc), NumAsmToks(asmtoks.size()) {
 | |
| 
 | |
|   initialize(C, asmstr, asmtoks, constraints, exprs, clobbers);
 | |
| }
 | |
| 
 | |
| static StringRef copyIntoContext(const ASTContext &C, StringRef str) {
 | |
|   size_t size = str.size();
 | |
|   char *buffer = new (C) char[size];
 | |
|   memcpy(buffer, str.data(), size);
 | |
|   return StringRef(buffer, size);
 | |
| }
 | |
| 
 | |
| void MSAsmStmt::initialize(const ASTContext &C, StringRef asmstr,
 | |
|                            ArrayRef<Token> asmtoks,
 | |
|                            ArrayRef<StringRef> constraints,
 | |
|                            ArrayRef<Expr*> exprs,
 | |
|                            ArrayRef<StringRef> clobbers) {
 | |
|   assert(NumAsmToks == asmtoks.size());
 | |
|   assert(NumClobbers == clobbers.size());
 | |
| 
 | |
|   unsigned NumExprs = exprs.size();
 | |
|   assert(NumExprs == NumOutputs + NumInputs);
 | |
|   assert(NumExprs == constraints.size());
 | |
| 
 | |
|   AsmStr = copyIntoContext(C, asmstr);
 | |
| 
 | |
|   Exprs = new (C) Stmt*[NumExprs];
 | |
|   for (unsigned i = 0, e = NumExprs; i != e; ++i)
 | |
|     Exprs[i] = exprs[i];
 | |
| 
 | |
|   AsmToks = new (C) Token[NumAsmToks];
 | |
|   for (unsigned i = 0, e = NumAsmToks; i != e; ++i)
 | |
|     AsmToks[i] = asmtoks[i];
 | |
| 
 | |
|   Constraints = new (C) StringRef[NumExprs];
 | |
|   for (unsigned i = 0, e = NumExprs; i != e; ++i) {
 | |
|     Constraints[i] = copyIntoContext(C, constraints[i]);
 | |
|   }
 | |
| 
 | |
|   Clobbers = new (C) StringRef[NumClobbers];
 | |
|   for (unsigned i = 0, e = NumClobbers; i != e; ++i) {
 | |
|     // FIXME: Avoid the allocation/copy if at all possible.
 | |
|     Clobbers[i] = copyIntoContext(C, clobbers[i]);
 | |
|   }
 | |
| }
 | |
| 
 | |
| ObjCForCollectionStmt::ObjCForCollectionStmt(Stmt *Elem, Expr *Collect,
 | |
|                                              Stmt *Body,  SourceLocation FCL,
 | |
|                                              SourceLocation RPL)
 | |
| : Stmt(ObjCForCollectionStmtClass) {
 | |
|   SubExprs[ELEM] = Elem;
 | |
|   SubExprs[COLLECTION] = Collect;
 | |
|   SubExprs[BODY] = Body;
 | |
|   ForLoc = FCL;
 | |
|   RParenLoc = RPL;
 | |
| }
 | |
| 
 | |
| ObjCAtTryStmt::ObjCAtTryStmt(SourceLocation atTryLoc, Stmt *atTryStmt,
 | |
|                              Stmt **CatchStmts, unsigned NumCatchStmts,
 | |
|                              Stmt *atFinallyStmt)
 | |
|   : Stmt(ObjCAtTryStmtClass), AtTryLoc(atTryLoc),
 | |
|     NumCatchStmts(NumCatchStmts), HasFinally(atFinallyStmt != 0)
 | |
| {
 | |
|   Stmt **Stmts = getStmts();
 | |
|   Stmts[0] = atTryStmt;
 | |
|   for (unsigned I = 0; I != NumCatchStmts; ++I)
 | |
|     Stmts[I + 1] = CatchStmts[I];
 | |
| 
 | |
|   if (HasFinally)
 | |
|     Stmts[NumCatchStmts + 1] = atFinallyStmt;
 | |
| }
 | |
| 
 | |
| ObjCAtTryStmt *ObjCAtTryStmt::Create(const ASTContext &Context,
 | |
|                                      SourceLocation atTryLoc,
 | |
|                                      Stmt *atTryStmt,
 | |
|                                      Stmt **CatchStmts,
 | |
|                                      unsigned NumCatchStmts,
 | |
|                                      Stmt *atFinallyStmt) {
 | |
|   unsigned Size = sizeof(ObjCAtTryStmt) +
 | |
|     (1 + NumCatchStmts + (atFinallyStmt != 0)) * sizeof(Stmt *);
 | |
|   void *Mem = Context.Allocate(Size, llvm::alignOf<ObjCAtTryStmt>());
 | |
|   return new (Mem) ObjCAtTryStmt(atTryLoc, atTryStmt, CatchStmts, NumCatchStmts,
 | |
|                                  atFinallyStmt);
 | |
| }
 | |
| 
 | |
| ObjCAtTryStmt *ObjCAtTryStmt::CreateEmpty(const ASTContext &Context,
 | |
|                                           unsigned NumCatchStmts,
 | |
|                                           bool HasFinally) {
 | |
|   unsigned Size = sizeof(ObjCAtTryStmt) +
 | |
|     (1 + NumCatchStmts + HasFinally) * sizeof(Stmt *);
 | |
|   void *Mem = Context.Allocate(Size, llvm::alignOf<ObjCAtTryStmt>());
 | |
|   return new (Mem) ObjCAtTryStmt(EmptyShell(), NumCatchStmts, HasFinally);
 | |
| }
 | |
| 
 | |
| SourceLocation ObjCAtTryStmt::getLocEnd() const {
 | |
|   if (HasFinally)
 | |
|     return getFinallyStmt()->getLocEnd();
 | |
|   if (NumCatchStmts)
 | |
|     return getCatchStmt(NumCatchStmts - 1)->getLocEnd();
 | |
|   return getTryBody()->getLocEnd();
 | |
| }
 | |
| 
 | |
| CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, SourceLocation tryLoc,
 | |
|                                Stmt *tryBlock, ArrayRef<Stmt*> handlers) {
 | |
|   std::size_t Size = sizeof(CXXTryStmt);
 | |
|   Size += ((handlers.size() + 1) * sizeof(Stmt));
 | |
| 
 | |
|   void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
 | |
|   return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers);
 | |
| }
 | |
| 
 | |
| CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, EmptyShell Empty,
 | |
|                                unsigned numHandlers) {
 | |
|   std::size_t Size = sizeof(CXXTryStmt);
 | |
|   Size += ((numHandlers + 1) * sizeof(Stmt));
 | |
| 
 | |
|   void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
 | |
|   return new (Mem) CXXTryStmt(Empty, numHandlers);
 | |
| }
 | |
| 
 | |
| CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, Stmt *tryBlock,
 | |
|                        ArrayRef<Stmt*> handlers)
 | |
|   : Stmt(CXXTryStmtClass), TryLoc(tryLoc), NumHandlers(handlers.size()) {
 | |
|   Stmt **Stmts = reinterpret_cast<Stmt **>(this + 1);
 | |
|   Stmts[0] = tryBlock;
 | |
|   std::copy(handlers.begin(), handlers.end(), Stmts + 1);
 | |
| }
 | |
| 
 | |
| CXXForRangeStmt::CXXForRangeStmt(DeclStmt *Range, DeclStmt *BeginEndStmt,
 | |
|                                  Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
 | |
|                                  Stmt *Body, SourceLocation FL,
 | |
|                                  SourceLocation CL, SourceLocation RPL)
 | |
|   : Stmt(CXXForRangeStmtClass), ForLoc(FL), ColonLoc(CL), RParenLoc(RPL) {
 | |
|   SubExprs[RANGE] = Range;
 | |
|   SubExprs[BEGINEND] = BeginEndStmt;
 | |
|   SubExprs[COND] = Cond;
 | |
|   SubExprs[INC] = Inc;
 | |
|   SubExprs[LOOPVAR] = LoopVar;
 | |
|   SubExprs[BODY] = Body;
 | |
| }
 | |
| 
 | |
| Expr *CXXForRangeStmt::getRangeInit() {
 | |
|   DeclStmt *RangeStmt = getRangeStmt();
 | |
|   VarDecl *RangeDecl = dyn_cast_or_null<VarDecl>(RangeStmt->getSingleDecl());
 | |
|   assert(RangeDecl &&& "for-range should have a single var decl");
 | |
|   return RangeDecl->getInit();
 | |
| }
 | |
| 
 | |
| const Expr *CXXForRangeStmt::getRangeInit() const {
 | |
|   return const_cast<CXXForRangeStmt*>(this)->getRangeInit();
 | |
| }
 | |
| 
 | |
| VarDecl *CXXForRangeStmt::getLoopVariable() {
 | |
|   Decl *LV = cast<DeclStmt>(getLoopVarStmt())->getSingleDecl();
 | |
|   assert(LV && "No loop variable in CXXForRangeStmt");
 | |
|   return cast<VarDecl>(LV);
 | |
| }
 | |
| 
 | |
| const VarDecl *CXXForRangeStmt::getLoopVariable() const {
 | |
|   return const_cast<CXXForRangeStmt*>(this)->getLoopVariable();
 | |
| }
 | |
| 
 | |
| IfStmt::IfStmt(const ASTContext &C, SourceLocation IL, VarDecl *var, Expr *cond,
 | |
|                Stmt *then, SourceLocation EL, Stmt *elsev)
 | |
|   : Stmt(IfStmtClass), IfLoc(IL), ElseLoc(EL)
 | |
| {
 | |
|   setConditionVariable(C, var);
 | |
|   SubExprs[COND] = cond;
 | |
|   SubExprs[THEN] = then;
 | |
|   SubExprs[ELSE] = elsev;
 | |
| }
 | |
| 
 | |
| VarDecl *IfStmt::getConditionVariable() const {
 | |
|   if (!SubExprs[VAR])
 | |
|     return 0;
 | |
| 
 | |
|   DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
 | |
|   return cast<VarDecl>(DS->getSingleDecl());
 | |
| }
 | |
| 
 | |
| void IfStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
 | |
|   if (!V) {
 | |
|     SubExprs[VAR] = 0;
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   SourceRange VarRange = V->getSourceRange();
 | |
|   SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
 | |
|                                    VarRange.getEnd());
 | |
| }
 | |
| 
 | |
| ForStmt::ForStmt(const ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar,
 | |
|                  Expr *Inc, Stmt *Body, SourceLocation FL, SourceLocation LP,
 | |
|                  SourceLocation RP)
 | |
|   : Stmt(ForStmtClass), ForLoc(FL), LParenLoc(LP), RParenLoc(RP)
 | |
| {
 | |
|   SubExprs[INIT] = Init;
 | |
|   setConditionVariable(C, condVar);
 | |
|   SubExprs[COND] = Cond;
 | |
|   SubExprs[INC] = Inc;
 | |
|   SubExprs[BODY] = Body;
 | |
| }
 | |
| 
 | |
| VarDecl *ForStmt::getConditionVariable() const {
 | |
|   if (!SubExprs[CONDVAR])
 | |
|     return 0;
 | |
| 
 | |
|   DeclStmt *DS = cast<DeclStmt>(SubExprs[CONDVAR]);
 | |
|   return cast<VarDecl>(DS->getSingleDecl());
 | |
| }
 | |
| 
 | |
| void ForStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
 | |
|   if (!V) {
 | |
|     SubExprs[CONDVAR] = 0;
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   SourceRange VarRange = V->getSourceRange();
 | |
|   SubExprs[CONDVAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
 | |
|                                        VarRange.getEnd());
 | |
| }
 | |
| 
 | |
| SwitchStmt::SwitchStmt(const ASTContext &C, VarDecl *Var, Expr *cond)
 | |
|   : Stmt(SwitchStmtClass), FirstCase(0), AllEnumCasesCovered(0)
 | |
| {
 | |
|   setConditionVariable(C, Var);
 | |
|   SubExprs[COND] = cond;
 | |
|   SubExprs[BODY] = NULL;
 | |
| }
 | |
| 
 | |
| VarDecl *SwitchStmt::getConditionVariable() const {
 | |
|   if (!SubExprs[VAR])
 | |
|     return 0;
 | |
| 
 | |
|   DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
 | |
|   return cast<VarDecl>(DS->getSingleDecl());
 | |
| }
 | |
| 
 | |
| void SwitchStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
 | |
|   if (!V) {
 | |
|     SubExprs[VAR] = 0;
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   SourceRange VarRange = V->getSourceRange();
 | |
|   SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
 | |
|                                    VarRange.getEnd());
 | |
| }
 | |
| 
 | |
| Stmt *SwitchCase::getSubStmt() {
 | |
|   if (isa<CaseStmt>(this))
 | |
|     return cast<CaseStmt>(this)->getSubStmt();
 | |
|   return cast<DefaultStmt>(this)->getSubStmt();
 | |
| }
 | |
| 
 | |
| WhileStmt::WhileStmt(const ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body,
 | |
|                      SourceLocation WL)
 | |
|   : Stmt(WhileStmtClass) {
 | |
|   setConditionVariable(C, Var);
 | |
|   SubExprs[COND] = cond;
 | |
|   SubExprs[BODY] = body;
 | |
|   WhileLoc = WL;
 | |
| }
 | |
| 
 | |
| VarDecl *WhileStmt::getConditionVariable() const {
 | |
|   if (!SubExprs[VAR])
 | |
|     return 0;
 | |
| 
 | |
|   DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
 | |
|   return cast<VarDecl>(DS->getSingleDecl());
 | |
| }
 | |
| 
 | |
| void WhileStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
 | |
|   if (!V) {
 | |
|     SubExprs[VAR] = 0;
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   SourceRange VarRange = V->getSourceRange();
 | |
|   SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
 | |
|                                    VarRange.getEnd());
 | |
| }
 | |
| 
 | |
| // IndirectGotoStmt
 | |
| LabelDecl *IndirectGotoStmt::getConstantTarget() {
 | |
|   if (AddrLabelExpr *E =
 | |
|         dyn_cast<AddrLabelExpr>(getTarget()->IgnoreParenImpCasts()))
 | |
|     return E->getLabel();
 | |
|   return 0;
 | |
| }
 | |
| 
 | |
| // ReturnStmt
 | |
| const Expr* ReturnStmt::getRetValue() const {
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|   return cast_or_null<Expr>(RetExpr);
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| }
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| Expr* ReturnStmt::getRetValue() {
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|   return cast_or_null<Expr>(RetExpr);
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| }
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| 
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| SEHTryStmt::SEHTryStmt(bool IsCXXTry,
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|                        SourceLocation TryLoc,
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|                        Stmt *TryBlock,
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|                        Stmt *Handler)
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|   : Stmt(SEHTryStmtClass),
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|     IsCXXTry(IsCXXTry),
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|     TryLoc(TryLoc)
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| {
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|   Children[TRY]     = TryBlock;
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|   Children[HANDLER] = Handler;
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| }
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| 
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| SEHTryStmt* SEHTryStmt::Create(const ASTContext &C, bool IsCXXTry,
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|                                SourceLocation TryLoc, Stmt *TryBlock,
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|                                Stmt *Handler) {
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|   return new(C) SEHTryStmt(IsCXXTry,TryLoc,TryBlock,Handler);
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| }
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| 
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| SEHExceptStmt* SEHTryStmt::getExceptHandler() const {
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|   return dyn_cast<SEHExceptStmt>(getHandler());
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| }
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| 
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| SEHFinallyStmt* SEHTryStmt::getFinallyHandler() const {
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|   return dyn_cast<SEHFinallyStmt>(getHandler());
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| }
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| 
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| SEHExceptStmt::SEHExceptStmt(SourceLocation Loc,
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|                              Expr *FilterExpr,
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|                              Stmt *Block)
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|   : Stmt(SEHExceptStmtClass),
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|     Loc(Loc)
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| {
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|   Children[FILTER_EXPR] = FilterExpr;
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|   Children[BLOCK]       = Block;
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| }
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| 
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| SEHExceptStmt* SEHExceptStmt::Create(const ASTContext &C, SourceLocation Loc,
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|                                      Expr *FilterExpr, Stmt *Block) {
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|   return new(C) SEHExceptStmt(Loc,FilterExpr,Block);
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| }
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| 
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| SEHFinallyStmt::SEHFinallyStmt(SourceLocation Loc,
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|                                Stmt *Block)
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|   : Stmt(SEHFinallyStmtClass),
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|     Loc(Loc),
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|     Block(Block)
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| {}
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| 
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| SEHFinallyStmt* SEHFinallyStmt::Create(const ASTContext &C, SourceLocation Loc,
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|                                        Stmt *Block) {
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|   return new(C)SEHFinallyStmt(Loc,Block);
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| }
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| 
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| CapturedStmt::Capture *CapturedStmt::getStoredCaptures() const {
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|   unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
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| 
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|   // Offset of the first Capture object.
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|   unsigned FirstCaptureOffset =
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|     llvm::RoundUpToAlignment(Size, llvm::alignOf<Capture>());
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| 
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|   return reinterpret_cast<Capture *>(
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|       reinterpret_cast<char *>(const_cast<CapturedStmt *>(this))
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|       + FirstCaptureOffset);
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| }
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| 
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| CapturedStmt::CapturedStmt(Stmt *S, CapturedRegionKind Kind,
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|                            ArrayRef<Capture> Captures,
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|                            ArrayRef<Expr *> CaptureInits,
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|                            CapturedDecl *CD,
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|                            RecordDecl *RD)
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|   : Stmt(CapturedStmtClass), NumCaptures(Captures.size()),
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|     CapDeclAndKind(CD, Kind), TheRecordDecl(RD) {
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|   assert( S && "null captured statement");
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|   assert(CD && "null captured declaration for captured statement");
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|   assert(RD && "null record declaration for captured statement");
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| 
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|   // Copy initialization expressions.
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|   Stmt **Stored = getStoredStmts();
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|   for (unsigned I = 0, N = NumCaptures; I != N; ++I)
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|     *Stored++ = CaptureInits[I];
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| 
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|   // Copy the statement being captured.
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|   *Stored = S;
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| 
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|   // Copy all Capture objects.
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|   Capture *Buffer = getStoredCaptures();
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|   std::copy(Captures.begin(), Captures.end(), Buffer);
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| }
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| 
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| CapturedStmt::CapturedStmt(EmptyShell Empty, unsigned NumCaptures)
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|   : Stmt(CapturedStmtClass, Empty), NumCaptures(NumCaptures),
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|     CapDeclAndKind(0, CR_Default), TheRecordDecl(0) {
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|   getStoredStmts()[NumCaptures] = 0;
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| }
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| 
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| CapturedStmt *CapturedStmt::Create(const ASTContext &Context, Stmt *S,
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|                                    CapturedRegionKind Kind,
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|                                    ArrayRef<Capture> Captures,
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|                                    ArrayRef<Expr *> CaptureInits,
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|                                    CapturedDecl *CD,
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|                                    RecordDecl *RD) {
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|   // The layout is
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|   //
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|   // -----------------------------------------------------------
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|   // | CapturedStmt, Init, ..., Init, S, Capture, ..., Capture |
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|   // ----------------^-------------------^----------------------
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|   //                 getStoredStmts()    getStoredCaptures()
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|   //
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|   // where S is the statement being captured.
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|   //
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|   assert(CaptureInits.size() == Captures.size() && "wrong number of arguments");
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| 
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|   unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (Captures.size() + 1);
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|   if (!Captures.empty()) {
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|     // Realign for the following Capture array.
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|     Size = llvm::RoundUpToAlignment(Size, llvm::alignOf<Capture>());
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|     Size += sizeof(Capture) * Captures.size();
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|   }
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| 
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|   void *Mem = Context.Allocate(Size);
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|   return new (Mem) CapturedStmt(S, Kind, Captures, CaptureInits, CD, RD);
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| }
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| 
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| CapturedStmt *CapturedStmt::CreateDeserialized(const ASTContext &Context,
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|                                                unsigned NumCaptures) {
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|   unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
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|   if (NumCaptures > 0) {
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|     // Realign for the following Capture array.
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|     Size = llvm::RoundUpToAlignment(Size, llvm::alignOf<Capture>());
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|     Size += sizeof(Capture) * NumCaptures;
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|   }
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| 
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|   void *Mem = Context.Allocate(Size);
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|   return new (Mem) CapturedStmt(EmptyShell(), NumCaptures);
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| }
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| 
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| Stmt::child_range CapturedStmt::children() {
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|   // Children are captured field initilizers.
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|   return child_range(getStoredStmts(), getStoredStmts() + NumCaptures);
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| }
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| 
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| bool CapturedStmt::capturesVariable(const VarDecl *Var) const {
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|   for (const_capture_iterator I = capture_begin(),
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|                               E = capture_end(); I != E; ++I) {
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|     if (!I->capturesVariable())
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|       continue;
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| 
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|     // This does not handle variable redeclarations. This should be
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|     // extended to capture variables with redeclarations, for example
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|     // a thread-private variable in OpenMP.
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|     if (I->getCapturedVar() == Var)
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|       return true;
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|   }
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| 
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|   return false;
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| }
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| 
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| StmtRange OMPClause::children() {
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|   switch(getClauseKind()) {
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|   default : break;
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| #define OPENMP_CLAUSE(Name, Class)                                       \
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|   case OMPC_ ## Name : return static_cast<Class *>(this)->children();
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| #include "clang/Basic/OpenMPKinds.def"
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|   }
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|   llvm_unreachable("unknown OMPClause");
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| }
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| 
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| OMPPrivateClause *OMPPrivateClause::Create(const ASTContext &C,
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|                                            SourceLocation StartLoc,
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|                                            SourceLocation LParenLoc,
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|                                            SourceLocation EndLoc,
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|                                            ArrayRef<Expr *> VL) {
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|   void *Mem = C.Allocate(sizeof(OMPPrivateClause) + sizeof(Expr *) * VL.size(),
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|                          llvm::alignOf<OMPPrivateClause>());
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|   OMPPrivateClause *Clause = new (Mem) OMPPrivateClause(StartLoc, LParenLoc,
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|                                                         EndLoc, VL.size());
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|   Clause->setVarRefs(VL);
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|   return Clause;
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| }
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| 
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| OMPPrivateClause *OMPPrivateClause::CreateEmpty(const ASTContext &C,
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|                                                 unsigned N) {
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|   void *Mem = C.Allocate(sizeof(OMPPrivateClause) + sizeof(Expr *) * N,
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|                          llvm::alignOf<OMPPrivateClause>());
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|   return new (Mem) OMPPrivateClause(N);
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| }
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| 
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| OMPFirstprivateClause *OMPFirstprivateClause::Create(const ASTContext &C,
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|                                                      SourceLocation StartLoc,
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|                                                      SourceLocation LParenLoc,
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|                                                      SourceLocation EndLoc,
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|                                                      ArrayRef<Expr *> VL) {
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|   void *Mem = C.Allocate(sizeof(OMPFirstprivateClause) +
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|                          sizeof(Expr *) * VL.size(),
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|                          llvm::alignOf<OMPFirstprivateClause>());
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|   OMPFirstprivateClause *Clause = new (Mem) OMPFirstprivateClause(StartLoc,
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|                                                                   LParenLoc,
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|                                                                   EndLoc,
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|                                                                   VL.size());
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|   Clause->setVarRefs(VL);
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|   return Clause;
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| }
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| 
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| OMPFirstprivateClause *OMPFirstprivateClause::CreateEmpty(const ASTContext &C,
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|                                                           unsigned N) {
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|   void *Mem = C.Allocate(sizeof(OMPFirstprivateClause) + sizeof(Expr *) * N,
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|                          llvm::alignOf<OMPFirstprivateClause>());
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|   return new (Mem) OMPFirstprivateClause(N);
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| }
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| 
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| OMPSharedClause *OMPSharedClause::Create(const ASTContext &C,
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|                                          SourceLocation StartLoc,
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|                                          SourceLocation LParenLoc,
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|                                          SourceLocation EndLoc,
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|                                          ArrayRef<Expr *> VL) {
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|   void *Mem = C.Allocate(sizeof(OMPSharedClause) + sizeof(Expr *) * VL.size(),
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|                          llvm::alignOf<OMPSharedClause>());
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|   OMPSharedClause *Clause = new (Mem) OMPSharedClause(StartLoc, LParenLoc,
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|                                                       EndLoc, VL.size());
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|   Clause->setVarRefs(VL);
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|   return Clause;
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| }
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| 
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| OMPSharedClause *OMPSharedClause::CreateEmpty(const ASTContext &C,
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|                                               unsigned N) {
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|   void *Mem = C.Allocate(sizeof(OMPSharedClause) + sizeof(Expr *) * N,
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|                          llvm::alignOf<OMPSharedClause>());
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|   return new (Mem) OMPSharedClause(N);
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| }
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| 
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| void OMPExecutableDirective::setClauses(ArrayRef<OMPClause *> Clauses) {
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|   assert(Clauses.size() == this->Clauses.size() &&
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|          "Number of clauses is not the same as the preallocated buffer");
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|   std::copy(Clauses.begin(), Clauses.end(), this->Clauses.begin());
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| }
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| 
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| OMPParallelDirective *OMPParallelDirective::Create(
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|                                               const ASTContext &C,
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|                                               SourceLocation StartLoc,
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|                                               SourceLocation EndLoc,
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|                                               ArrayRef<OMPClause *> Clauses,
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|                                               Stmt *AssociatedStmt) {
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|   void *Mem = C.Allocate(sizeof(OMPParallelDirective) +
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|                          sizeof(OMPClause *) * Clauses.size() + sizeof(Stmt *),
 | |
|                          llvm::alignOf<OMPParallelDirective>());
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|   OMPParallelDirective *Dir = new (Mem) OMPParallelDirective(StartLoc, EndLoc,
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|                                                              Clauses.size());
 | |
|   Dir->setClauses(Clauses);
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|   Dir->setAssociatedStmt(AssociatedStmt);
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|   return Dir;
 | |
| }
 | |
| 
 | |
| OMPParallelDirective *OMPParallelDirective::CreateEmpty(const ASTContext &C,
 | |
|                                                         unsigned N,
 | |
|                                                         EmptyShell) {
 | |
|   void *Mem = C.Allocate(sizeof(OMPParallelDirective) +
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|                          sizeof(OMPClause *) * N + sizeof(Stmt *),
 | |
|                          llvm::alignOf<OMPParallelDirective>());
 | |
|   return new (Mem) OMPParallelDirective(N);
 | |
| }
 | 
