clang  3.9.0
Stmt.cpp
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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"
16 #include "clang/AST/ExprCXX.h"
17 #include "clang/AST/ExprObjC.h"
18 #include "clang/AST/ExprOpenMP.h"
19 #include "clang/AST/Stmt.h"
20 #include "clang/AST/StmtCXX.h"
21 #include "clang/AST/StmtObjC.h"
22 #include "clang/AST/StmtOpenMP.h"
23 #include "clang/AST/Type.h"
24 #include "clang/Basic/CharInfo.h"
25 #include "clang/Basic/TargetInfo.h"
26 #include "clang/Lex/Token.h"
27 #include "llvm/ADT/StringExtras.h"
28 #include "llvm/Support/raw_ostream.h"
29 using namespace clang;
30 
31 static struct StmtClassNameTable {
32  const char *Name;
33  unsigned Counter;
34  unsigned Size;
35 } StmtClassInfo[Stmt::lastStmtConstant+1];
36 
37 static StmtClassNameTable &getStmtInfoTableEntry(Stmt::StmtClass E) {
38  static bool Initialized = false;
39  if (Initialized)
40  return StmtClassInfo[E];
41 
42  // Intialize the table on the first use.
43  Initialized = true;
44 #define ABSTRACT_STMT(STMT)
45 #define STMT(CLASS, PARENT) \
46  StmtClassInfo[(unsigned)Stmt::CLASS##Class].Name = #CLASS; \
47  StmtClassInfo[(unsigned)Stmt::CLASS##Class].Size = sizeof(CLASS);
48 #include "clang/AST/StmtNodes.inc"
49 
50  return StmtClassInfo[E];
51 }
52 
53 void *Stmt::operator new(size_t bytes, const ASTContext& C,
54  unsigned alignment) {
55  return ::operator new(bytes, C, alignment);
56 }
57 
58 const char *Stmt::getStmtClassName() const {
59  return getStmtInfoTableEntry((StmtClass) StmtBits.sClass).Name;
60 }
61 
62 void Stmt::PrintStats() {
63  // Ensure the table is primed.
64  getStmtInfoTableEntry(Stmt::NullStmtClass);
65 
66  unsigned sum = 0;
67  llvm::errs() << "\n*** Stmt/Expr Stats:\n";
68  for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
69  if (StmtClassInfo[i].Name == nullptr) continue;
70  sum += StmtClassInfo[i].Counter;
71  }
72  llvm::errs() << " " << sum << " stmts/exprs total.\n";
73  sum = 0;
74  for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
75  if (StmtClassInfo[i].Name == nullptr) continue;
76  if (StmtClassInfo[i].Counter == 0) continue;
77  llvm::errs() << " " << StmtClassInfo[i].Counter << " "
78  << StmtClassInfo[i].Name << ", " << StmtClassInfo[i].Size
79  << " each (" << StmtClassInfo[i].Counter*StmtClassInfo[i].Size
80  << " bytes)\n";
82  }
83 
84  llvm::errs() << "Total bytes = " << sum << "\n";
85 }
86 
87 void Stmt::addStmtClass(StmtClass s) {
89 }
90 
91 bool Stmt::StatisticsEnabled = false;
92 void Stmt::EnableStatistics() {
93  StatisticsEnabled = true;
94 }
95 
96 Stmt *Stmt::IgnoreImplicit() {
97  Stmt *s = this;
98 
99  if (auto *ewc = dyn_cast<ExprWithCleanups>(s))
100  s = ewc->getSubExpr();
101 
102  if (auto *mte = dyn_cast<MaterializeTemporaryExpr>(s))
103  s = mte->GetTemporaryExpr();
104 
105  if (auto *bte = dyn_cast<CXXBindTemporaryExpr>(s))
106  s = bte->getSubExpr();
107 
108  while (auto *ice = dyn_cast<ImplicitCastExpr>(s))
109  s = ice->getSubExpr();
110 
111  return s;
112 }
113 
114 /// \brief Skip no-op (attributed, compound) container stmts and skip captured
115 /// stmt at the top, if \a IgnoreCaptured is true.
116 Stmt *Stmt::IgnoreContainers(bool IgnoreCaptured) {
117  Stmt *S = this;
118  if (IgnoreCaptured)
119  if (auto CapS = dyn_cast_or_null<CapturedStmt>(S))
120  S = CapS->getCapturedStmt();
121  while (true) {
122  if (auto AS = dyn_cast_or_null<AttributedStmt>(S))
123  S = AS->getSubStmt();
124  else if (auto CS = dyn_cast_or_null<CompoundStmt>(S)) {
125  if (CS->size() != 1)
126  break;
127  S = CS->body_back();
128  } else
129  break;
130  }
131  return S;
132 }
133 
134 /// \brief Strip off all label-like statements.
135 ///
136 /// This will strip off label statements, case statements, attributed
137 /// statements and default statements recursively.
138 const Stmt *Stmt::stripLabelLikeStatements() const {
139  const Stmt *S = this;
140  while (true) {
141  if (const LabelStmt *LS = dyn_cast<LabelStmt>(S))
142  S = LS->getSubStmt();
143  else if (const SwitchCase *SC = dyn_cast<SwitchCase>(S))
144  S = SC->getSubStmt();
145  else if (const AttributedStmt *AS = dyn_cast<AttributedStmt>(S))
146  S = AS->getSubStmt();
147  else
148  return S;
149  }
150 }
151 
152 namespace {
153  struct good {};
154  struct bad {};
155 
156  // These silly little functions have to be static inline to suppress
157  // unused warnings, and they have to be defined to suppress other
158  // warnings.
159  static inline good is_good(good) { return good(); }
160 
161  typedef Stmt::child_range children_t();
162  template <class T> good implements_children(children_t T::*) {
163  return good();
164  }
165  LLVM_ATTRIBUTE_UNUSED
166  static inline bad implements_children(children_t Stmt::*) {
167  return bad();
168  }
169 
170  typedef SourceLocation getLocStart_t() const;
171  template <class T> good implements_getLocStart(getLocStart_t T::*) {
172  return good();
173  }
174  LLVM_ATTRIBUTE_UNUSED
175  static inline bad implements_getLocStart(getLocStart_t Stmt::*) {
176  return bad();
177  }
178 
179  typedef SourceLocation getLocEnd_t() const;
180  template <class T> good implements_getLocEnd(getLocEnd_t T::*) {
181  return good();
182  }
183  LLVM_ATTRIBUTE_UNUSED
184  static inline bad implements_getLocEnd(getLocEnd_t Stmt::*) {
185  return bad();
186  }
187 
188 #define ASSERT_IMPLEMENTS_children(type) \
189  (void) is_good(implements_children(&type::children))
190 #define ASSERT_IMPLEMENTS_getLocStart(type) \
191  (void) is_good(implements_getLocStart(&type::getLocStart))
192 #define ASSERT_IMPLEMENTS_getLocEnd(type) \
193  (void) is_good(implements_getLocEnd(&type::getLocEnd))
194 }
195 
196 /// Check whether the various Stmt classes implement their member
197 /// functions.
198 LLVM_ATTRIBUTE_UNUSED
199 static inline void check_implementations() {
200 #define ABSTRACT_STMT(type)
201 #define STMT(type, base) \
202  ASSERT_IMPLEMENTS_children(type); \
203  ASSERT_IMPLEMENTS_getLocStart(type); \
204  ASSERT_IMPLEMENTS_getLocEnd(type);
205 #include "clang/AST/StmtNodes.inc"
206 }
207 
208 Stmt::child_range Stmt::children() {
209  switch (getStmtClass()) {
210  case Stmt::NoStmtClass: llvm_unreachable("statement without class");
211 #define ABSTRACT_STMT(type)
212 #define STMT(type, base) \
213  case Stmt::type##Class: \
214  return static_cast<type*>(this)->children();
215 #include "clang/AST/StmtNodes.inc"
216  }
217  llvm_unreachable("unknown statement kind!");
218 }
219 
220 // Amusing macro metaprogramming hack: check whether a class provides
221 // a more specific implementation of getSourceRange.
222 //
223 // See also Expr.cpp:getExprLoc().
224 namespace {
225  /// This implementation is used when a class provides a custom
226  /// implementation of getSourceRange.
227  template <class S, class T>
228  SourceRange getSourceRangeImpl(const Stmt *stmt,
229  SourceRange (T::*v)() const) {
230  return static_cast<const S*>(stmt)->getSourceRange();
231  }
232 
233  /// This implementation is used when a class doesn't provide a custom
234  /// implementation of getSourceRange. Overload resolution should pick it over
235  /// the implementation above because it's more specialized according to
236  /// function template partial ordering.
237  template <class S>
238  SourceRange getSourceRangeImpl(const Stmt *stmt,
239  SourceRange (Stmt::*v)() const) {
240  return SourceRange(static_cast<const S*>(stmt)->getLocStart(),
241  static_cast<const S*>(stmt)->getLocEnd());
242  }
243 }
244 
246  switch (getStmtClass()) {
247  case Stmt::NoStmtClass: llvm_unreachable("statement without class");
248 #define ABSTRACT_STMT(type)
249 #define STMT(type, base) \
250  case Stmt::type##Class: \
251  return getSourceRangeImpl<type>(this, &type::getSourceRange);
252 #include "clang/AST/StmtNodes.inc"
253  }
254  llvm_unreachable("unknown statement kind!");
255 }
256 
257 SourceLocation Stmt::getLocStart() const {
258 // llvm::errs() << "getLocStart() for " << getStmtClassName() << "\n";
259  switch (getStmtClass()) {
260  case Stmt::NoStmtClass: llvm_unreachable("statement without class");
261 #define ABSTRACT_STMT(type)
262 #define STMT(type, base) \
263  case Stmt::type##Class: \
264  return static_cast<const type*>(this)->getLocStart();
265 #include "clang/AST/StmtNodes.inc"
266  }
267  llvm_unreachable("unknown statement kind");
268 }
269 
270 SourceLocation Stmt::getLocEnd() const {
271  switch (getStmtClass()) {
272  case Stmt::NoStmtClass: llvm_unreachable("statement without class");
273 #define ABSTRACT_STMT(type)
274 #define STMT(type, base) \
275  case Stmt::type##Class: \
276  return static_cast<const type*>(this)->getLocEnd();
277 #include "clang/AST/StmtNodes.inc"
278  }
279  llvm_unreachable("unknown statement kind");
280 }
281 
284  : Stmt(CompoundStmtClass), LBraceLoc(LB), RBraceLoc(RB) {
285  CompoundStmtBits.NumStmts = Stmts.size();
286  assert(CompoundStmtBits.NumStmts == Stmts.size() &&
287  "NumStmts doesn't fit in bits of CompoundStmtBits.NumStmts!");
288 
289  if (Stmts.size() == 0) {
290  Body = nullptr;
291  return;
292  }
293 
294  Body = new (C) Stmt*[Stmts.size()];
295  std::copy(Stmts.begin(), Stmts.end(), Body);
296 }
297 
299  if (Body)
300  C.Deallocate(Body);
301  CompoundStmtBits.NumStmts = Stmts.size();
302  assert(CompoundStmtBits.NumStmts == Stmts.size() &&
303  "NumStmts doesn't fit in bits of CompoundStmtBits.NumStmts!");
304 
305  Body = new (C) Stmt*[Stmts.size()];
306  std::copy(Stmts.begin(), Stmts.end(), Body);
307 }
308 
309 const char *LabelStmt::getName() const {
310  return getDecl()->getIdentifier()->getNameStart();
311 }
312 
314  ArrayRef<const Attr*> Attrs,
315  Stmt *SubStmt) {
316  assert(!Attrs.empty() && "Attrs should not be empty");
317  void *Mem = C.Allocate(sizeof(AttributedStmt) + sizeof(Attr *) * Attrs.size(),
318  llvm::alignOf<AttributedStmt>());
319  return new (Mem) AttributedStmt(Loc, Attrs, SubStmt);
320 }
321 
323  unsigned NumAttrs) {
324  assert(NumAttrs > 0 && "NumAttrs should be greater than zero");
325  void *Mem = C.Allocate(sizeof(AttributedStmt) + sizeof(Attr *) * NumAttrs,
326  llvm::alignOf<AttributedStmt>());
327  return new (Mem) AttributedStmt(EmptyShell(), NumAttrs);
328 }
329 
330 std::string AsmStmt::generateAsmString(const ASTContext &C) const {
331  if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
332  return gccAsmStmt->generateAsmString(C);
333  if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
334  return msAsmStmt->generateAsmString(C);
335  llvm_unreachable("unknown asm statement kind!");
336 }
337 
338 StringRef AsmStmt::getOutputConstraint(unsigned i) const {
339  if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
340  return gccAsmStmt->getOutputConstraint(i);
341  if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
342  return msAsmStmt->getOutputConstraint(i);
343  llvm_unreachable("unknown asm statement kind!");
344 }
345 
346 const Expr *AsmStmt::getOutputExpr(unsigned i) const {
347  if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
348  return gccAsmStmt->getOutputExpr(i);
349  if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
350  return msAsmStmt->getOutputExpr(i);
351  llvm_unreachable("unknown asm statement kind!");
352 }
353 
354 StringRef AsmStmt::getInputConstraint(unsigned i) const {
355  if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
356  return gccAsmStmt->getInputConstraint(i);
357  if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
358  return msAsmStmt->getInputConstraint(i);
359  llvm_unreachable("unknown asm statement kind!");
360 }
361 
362 const Expr *AsmStmt::getInputExpr(unsigned i) const {
363  if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
364  return gccAsmStmt->getInputExpr(i);
365  if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
366  return msAsmStmt->getInputExpr(i);
367  llvm_unreachable("unknown asm statement kind!");
368 }
369 
370 StringRef AsmStmt::getClobber(unsigned i) const {
371  if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
372  return gccAsmStmt->getClobber(i);
373  if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
374  return msAsmStmt->getClobber(i);
375  llvm_unreachable("unknown asm statement kind!");
376 }
377 
378 /// getNumPlusOperands - Return the number of output operands that have a "+"
379 /// constraint.
380 unsigned AsmStmt::getNumPlusOperands() const {
381  unsigned Res = 0;
382  for (unsigned i = 0, e = getNumOutputs(); i != e; ++i)
383  if (isOutputPlusConstraint(i))
384  ++Res;
385  return Res;
386 }
387 
389  assert(isOperand() && "Only Operands can have modifiers.");
390  return isLetter(Str[0]) ? Str[0] : '\0';
391 }
392 
393 StringRef GCCAsmStmt::getClobber(unsigned i) const {
394  return getClobberStringLiteral(i)->getString();
395 }
396 
398  return cast<Expr>(Exprs[i]);
399 }
400 
401 /// getOutputConstraint - Return the constraint string for the specified
402 /// output operand. All output constraints are known to be non-empty (either
403 /// '=' or '+').
404 StringRef GCCAsmStmt::getOutputConstraint(unsigned i) const {
406 }
407 
409  return cast<Expr>(Exprs[i + NumOutputs]);
410 }
411 void GCCAsmStmt::setInputExpr(unsigned i, Expr *E) {
412  Exprs[i + NumOutputs] = E;
413 }
414 
415 /// getInputConstraint - Return the specified input constraint. Unlike output
416 /// constraints, these can be empty.
417 StringRef GCCAsmStmt::getInputConstraint(unsigned i) const {
419 }
420 
421 void GCCAsmStmt::setOutputsAndInputsAndClobbers(const ASTContext &C,
422  IdentifierInfo **Names,
423  StringLiteral **Constraints,
424  Stmt **Exprs,
425  unsigned NumOutputs,
426  unsigned NumInputs,
427  StringLiteral **Clobbers,
428  unsigned NumClobbers) {
429  this->NumOutputs = NumOutputs;
430  this->NumInputs = NumInputs;
431  this->NumClobbers = NumClobbers;
432 
433  unsigned NumExprs = NumOutputs + NumInputs;
434 
435  C.Deallocate(this->Names);
436  this->Names = new (C) IdentifierInfo*[NumExprs];
437  std::copy(Names, Names + NumExprs, this->Names);
438 
439  C.Deallocate(this->Exprs);
440  this->Exprs = new (C) Stmt*[NumExprs];
441  std::copy(Exprs, Exprs + NumExprs, this->Exprs);
442 
443  C.Deallocate(this->Constraints);
444  this->Constraints = new (C) StringLiteral*[NumExprs];
445  std::copy(Constraints, Constraints + NumExprs, this->Constraints);
446 
447  C.Deallocate(this->Clobbers);
448  this->Clobbers = new (C) StringLiteral*[NumClobbers];
449  std::copy(Clobbers, Clobbers + NumClobbers, this->Clobbers);
450 }
451 
452 /// getNamedOperand - Given a symbolic operand reference like %[foo],
453 /// translate this into a numeric value needed to reference the same operand.
454 /// This returns -1 if the operand name is invalid.
455 int GCCAsmStmt::getNamedOperand(StringRef SymbolicName) const {
456  unsigned NumPlusOperands = 0;
457 
458  // Check if this is an output operand.
459  for (unsigned i = 0, e = getNumOutputs(); i != e; ++i) {
460  if (getOutputName(i) == SymbolicName)
461  return i;
462  }
463 
464  for (unsigned i = 0, e = getNumInputs(); i != e; ++i)
465  if (getInputName(i) == SymbolicName)
466  return getNumOutputs() + NumPlusOperands + i;
467 
468  // Not found.
469  return -1;
470 }
471 
472 /// AnalyzeAsmString - Analyze the asm string of the current asm, decomposing
473 /// it into pieces. If the asm string is erroneous, emit errors and return
474 /// true, otherwise return false.
476  const ASTContext &C, unsigned &DiagOffs) const {
477  StringRef Str = getAsmString()->getString();
478  const char *StrStart = Str.begin();
479  const char *StrEnd = Str.end();
480  const char *CurPtr = StrStart;
481 
482  // "Simple" inline asms have no constraints or operands, just convert the asm
483  // string to escape $'s.
484  if (isSimple()) {
485  std::string Result;
486  for (; CurPtr != StrEnd; ++CurPtr) {
487  switch (*CurPtr) {
488  case '$':
489  Result += "$$";
490  break;
491  default:
492  Result += *CurPtr;
493  break;
494  }
495  }
496  Pieces.push_back(AsmStringPiece(Result));
497  return 0;
498  }
499 
500  // CurStringPiece - The current string that we are building up as we scan the
501  // asm string.
502  std::string CurStringPiece;
503 
504  bool HasVariants = !C.getTargetInfo().hasNoAsmVariants();
505 
506  unsigned LastAsmStringToken = 0;
507  unsigned LastAsmStringOffset = 0;
508 
509  while (1) {
510  // Done with the string?
511  if (CurPtr == StrEnd) {
512  if (!CurStringPiece.empty())
513  Pieces.push_back(AsmStringPiece(CurStringPiece));
514  return 0;
515  }
516 
517  char CurChar = *CurPtr++;
518  switch (CurChar) {
519  case '$': CurStringPiece += "$$"; continue;
520  case '{': CurStringPiece += (HasVariants ? "$(" : "{"); continue;
521  case '|': CurStringPiece += (HasVariants ? "$|" : "|"); continue;
522  case '}': CurStringPiece += (HasVariants ? "$)" : "}"); continue;
523  case '%':
524  break;
525  default:
526  CurStringPiece += CurChar;
527  continue;
528  }
529 
530  // Escaped "%" character in asm string.
531  if (CurPtr == StrEnd) {
532  // % at end of string is invalid (no escape).
533  DiagOffs = CurPtr-StrStart-1;
534  return diag::err_asm_invalid_escape;
535  }
536 
537  char EscapedChar = *CurPtr++;
538  if (EscapedChar == '%') { // %% -> %
539  // Escaped percentage sign.
540  CurStringPiece += '%';
541  continue;
542  }
543 
544  if (EscapedChar == '=') { // %= -> Generate an unique ID.
545  CurStringPiece += "${:uid}";
546  continue;
547  }
548 
549  // Otherwise, we have an operand. If we have accumulated a string so far,
550  // add it to the Pieces list.
551  if (!CurStringPiece.empty()) {
552  Pieces.push_back(AsmStringPiece(CurStringPiece));
553  CurStringPiece.clear();
554  }
555 
556  // Handle operands that have asmSymbolicName (e.g., %x[foo]) and those that
557  // don't (e.g., %x4). 'x' following the '%' is the constraint modifier.
558 
559  const char *Begin = CurPtr - 1; // Points to the character following '%'.
560  const char *Percent = Begin - 1; // Points to '%'.
561 
562  if (isLetter(EscapedChar)) {
563  if (CurPtr == StrEnd) { // Premature end.
564  DiagOffs = CurPtr-StrStart-1;
565  return diag::err_asm_invalid_escape;
566  }
567  EscapedChar = *CurPtr++;
568  }
569 
570  const TargetInfo &TI = C.getTargetInfo();
571  const SourceManager &SM = C.getSourceManager();
572  const LangOptions &LO = C.getLangOpts();
573 
574  // Handle operands that don't have asmSymbolicName (e.g., %x4).
575  if (isDigit(EscapedChar)) {
576  // %n - Assembler operand n
577  unsigned N = 0;
578 
579  --CurPtr;
580  while (CurPtr != StrEnd && isDigit(*CurPtr))
581  N = N*10 + ((*CurPtr++)-'0');
582 
583  unsigned NumOperands =
585  if (N >= NumOperands) {
586  DiagOffs = CurPtr-StrStart-1;
587  return diag::err_asm_invalid_operand_number;
588  }
589 
590  // Str contains "x4" (Operand without the leading %).
591  std::string Str(Begin, CurPtr - Begin);
592 
593  // (BeginLoc, EndLoc) represents the range of the operand we are currently
594  // processing. Unlike Str, the range includes the leading '%'.
596  Percent - StrStart, SM, LO, TI, &LastAsmStringToken,
597  &LastAsmStringOffset);
599  CurPtr - StrStart, SM, LO, TI, &LastAsmStringToken,
600  &LastAsmStringOffset);
601 
602  Pieces.emplace_back(N, std::move(Str), BeginLoc, EndLoc);
603  continue;
604  }
605 
606  // Handle operands that have asmSymbolicName (e.g., %x[foo]).
607  if (EscapedChar == '[') {
608  DiagOffs = CurPtr-StrStart-1;
609 
610  // Find the ']'.
611  const char *NameEnd = (const char*)memchr(CurPtr, ']', StrEnd-CurPtr);
612  if (NameEnd == nullptr)
613  return diag::err_asm_unterminated_symbolic_operand_name;
614  if (NameEnd == CurPtr)
615  return diag::err_asm_empty_symbolic_operand_name;
616 
617  StringRef SymbolicName(CurPtr, NameEnd - CurPtr);
618 
619  int N = getNamedOperand(SymbolicName);
620  if (N == -1) {
621  // Verify that an operand with that name exists.
622  DiagOffs = CurPtr-StrStart;
623  return diag::err_asm_unknown_symbolic_operand_name;
624  }
625 
626  // Str contains "x[foo]" (Operand without the leading %).
627  std::string Str(Begin, NameEnd + 1 - Begin);
628 
629  // (BeginLoc, EndLoc) represents the range of the operand we are currently
630  // processing. Unlike Str, the range includes the leading '%'.
632  Percent - StrStart, SM, LO, TI, &LastAsmStringToken,
633  &LastAsmStringOffset);
635  NameEnd + 1 - StrStart, SM, LO, TI, &LastAsmStringToken,
636  &LastAsmStringOffset);
637 
638  Pieces.emplace_back(N, std::move(Str), BeginLoc, EndLoc);
639 
640  CurPtr = NameEnd+1;
641  continue;
642  }
643 
644  DiagOffs = CurPtr-StrStart-1;
645  return diag::err_asm_invalid_escape;
646  }
647 }
648 
649 /// Assemble final IR asm string (GCC-style).
650 std::string GCCAsmStmt::generateAsmString(const ASTContext &C) const {
651  // Analyze the asm string to decompose it into its pieces. We know that Sema
652  // has already done this, so it is guaranteed to be successful.
654  unsigned DiagOffs;
655  AnalyzeAsmString(Pieces, C, DiagOffs);
656 
657  std::string AsmString;
658  for (unsigned i = 0, e = Pieces.size(); i != e; ++i) {
659  if (Pieces[i].isString())
660  AsmString += Pieces[i].getString();
661  else if (Pieces[i].getModifier() == '\0')
662  AsmString += '$' + llvm::utostr(Pieces[i].getOperandNo());
663  else
664  AsmString += "${" + llvm::utostr(Pieces[i].getOperandNo()) + ':' +
665  Pieces[i].getModifier() + '}';
666  }
667  return AsmString;
668 }
669 
670 /// Assemble final IR asm string (MS-style).
671 std::string MSAsmStmt::generateAsmString(const ASTContext &C) const {
672  // FIXME: This needs to be translated into the IR string representation.
673  return AsmStr;
674 }
675 
677  return cast<Expr>(Exprs[i]);
678 }
679 
681  return cast<Expr>(Exprs[i + NumOutputs]);
682 }
683 void MSAsmStmt::setInputExpr(unsigned i, Expr *E) {
684  Exprs[i + NumOutputs] = E;
685 }
686 
687 //===----------------------------------------------------------------------===//
688 // Constructors
689 //===----------------------------------------------------------------------===//
690 
692  bool issimple, bool isvolatile, unsigned numoutputs,
693  unsigned numinputs, IdentifierInfo **names,
694  StringLiteral **constraints, Expr **exprs,
695  StringLiteral *asmstr, unsigned numclobbers,
696  StringLiteral **clobbers, SourceLocation rparenloc)
697  : AsmStmt(GCCAsmStmtClass, asmloc, issimple, isvolatile, numoutputs,
698  numinputs, numclobbers), RParenLoc(rparenloc), AsmStr(asmstr) {
699 
700  unsigned NumExprs = NumOutputs + NumInputs;
701 
702  Names = new (C) IdentifierInfo*[NumExprs];
703  std::copy(names, names + NumExprs, Names);
704 
705  Exprs = new (C) Stmt*[NumExprs];
706  std::copy(exprs, exprs + NumExprs, Exprs);
707 
708  Constraints = new (C) StringLiteral*[NumExprs];
709  std::copy(constraints, constraints + NumExprs, Constraints);
710 
711  Clobbers = new (C) StringLiteral*[NumClobbers];
712  std::copy(clobbers, clobbers + NumClobbers, Clobbers);
713 }
714 
716  SourceLocation lbraceloc, bool issimple, bool isvolatile,
717  ArrayRef<Token> asmtoks, unsigned numoutputs,
718  unsigned numinputs,
719  ArrayRef<StringRef> constraints, ArrayRef<Expr*> exprs,
720  StringRef asmstr, ArrayRef<StringRef> clobbers,
721  SourceLocation endloc)
722  : AsmStmt(MSAsmStmtClass, asmloc, issimple, isvolatile, numoutputs,
723  numinputs, clobbers.size()), LBraceLoc(lbraceloc),
724  EndLoc(endloc), NumAsmToks(asmtoks.size()) {
725 
726  initialize(C, asmstr, asmtoks, constraints, exprs, clobbers);
727 }
728 
729 static StringRef copyIntoContext(const ASTContext &C, StringRef str) {
730  return str.copy(C);
731 }
732 
733 void MSAsmStmt::initialize(const ASTContext &C, StringRef asmstr,
734  ArrayRef<Token> asmtoks,
735  ArrayRef<StringRef> constraints,
736  ArrayRef<Expr*> exprs,
737  ArrayRef<StringRef> clobbers) {
738  assert(NumAsmToks == asmtoks.size());
739  assert(NumClobbers == clobbers.size());
740 
741  assert(exprs.size() == NumOutputs + NumInputs);
742  assert(exprs.size() == constraints.size());
743 
744  AsmStr = copyIntoContext(C, asmstr);
745 
746  Exprs = new (C) Stmt*[exprs.size()];
747  std::copy(exprs.begin(), exprs.end(), Exprs);
748 
749  AsmToks = new (C) Token[asmtoks.size()];
750  std::copy(asmtoks.begin(), asmtoks.end(), AsmToks);
751 
752  Constraints = new (C) StringRef[exprs.size()];
753  std::transform(constraints.begin(), constraints.end(), Constraints,
754  [&](StringRef Constraint) {
755  return copyIntoContext(C, Constraint);
756  });
757 
758  Clobbers = new (C) StringRef[NumClobbers];
759  // FIXME: Avoid the allocation/copy if at all possible.
760  std::transform(clobbers.begin(), clobbers.end(), Clobbers,
761  [&](StringRef Clobber) {
762  return copyIntoContext(C, Clobber);
763  });
764 }
765 
766 IfStmt::IfStmt(const ASTContext &C, SourceLocation IL, bool IsConstexpr,
767  Stmt *init, VarDecl *var, Expr *cond, Stmt *then,
768  SourceLocation EL, Stmt *elsev)
769  : Stmt(IfStmtClass), IfLoc(IL), ElseLoc(EL) {
770  setConstexpr(IsConstexpr);
771  setConditionVariable(C, var);
772  SubExprs[INIT] = init;
773  SubExprs[COND] = cond;
774  SubExprs[THEN] = then;
775  SubExprs[ELSE] = elsev;
776 }
777 
779  if (!SubExprs[VAR])
780  return nullptr;
781 
782  DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
783  return cast<VarDecl>(DS->getSingleDecl());
784 }
785 
787  if (!V) {
788  SubExprs[VAR] = nullptr;
789  return;
790  }
791 
792  SourceRange VarRange = V->getSourceRange();
793  SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
794  VarRange.getEnd());
795 }
796 
797 ForStmt::ForStmt(const ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar,
798  Expr *Inc, Stmt *Body, SourceLocation FL, SourceLocation LP,
799  SourceLocation RP)
800  : Stmt(ForStmtClass), ForLoc(FL), LParenLoc(LP), RParenLoc(RP)
801 {
802  SubExprs[INIT] = Init;
803  setConditionVariable(C, condVar);
804  SubExprs[COND] = Cond;
805  SubExprs[INC] = Inc;
806  SubExprs[BODY] = Body;
807 }
808 
810  if (!SubExprs[CONDVAR])
811  return nullptr;
812 
813  DeclStmt *DS = cast<DeclStmt>(SubExprs[CONDVAR]);
814  return cast<VarDecl>(DS->getSingleDecl());
815 }
816 
818  if (!V) {
819  SubExprs[CONDVAR] = nullptr;
820  return;
821  }
822 
823  SourceRange VarRange = V->getSourceRange();
824  SubExprs[CONDVAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
825  VarRange.getEnd());
826 }
827 
829  Expr *cond)
830  : Stmt(SwitchStmtClass), FirstCase(nullptr, false) {
831  setConditionVariable(C, Var);
832  SubExprs[INIT] = init;
833  SubExprs[COND] = cond;
834  SubExprs[BODY] = nullptr;
835 }
836 
838  if (!SubExprs[VAR])
839  return nullptr;
840 
841  DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
842  return cast<VarDecl>(DS->getSingleDecl());
843 }
844 
846  if (!V) {
847  SubExprs[VAR] = nullptr;
848  return;
849  }
850 
851  SourceRange VarRange = V->getSourceRange();
852  SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
853  VarRange.getEnd());
854 }
855 
857  if (isa<CaseStmt>(this))
858  return cast<CaseStmt>(this)->getSubStmt();
859  return cast<DefaultStmt>(this)->getSubStmt();
860 }
861 
862 WhileStmt::WhileStmt(const ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body,
863  SourceLocation WL)
864  : Stmt(WhileStmtClass) {
865  setConditionVariable(C, Var);
866  SubExprs[COND] = cond;
867  SubExprs[BODY] = body;
868  WhileLoc = WL;
869 }
870 
872  if (!SubExprs[VAR])
873  return nullptr;
874 
875  DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
876  return cast<VarDecl>(DS->getSingleDecl());
877 }
878 
880  if (!V) {
881  SubExprs[VAR] = nullptr;
882  return;
883  }
884 
885  SourceRange VarRange = V->getSourceRange();
886  SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
887  VarRange.getEnd());
888 }
889 
890 // IndirectGotoStmt
892  if (AddrLabelExpr *E =
893  dyn_cast<AddrLabelExpr>(getTarget()->IgnoreParenImpCasts()))
894  return E->getLabel();
895  return nullptr;
896 }
897 
898 // ReturnStmt
900  return cast_or_null<Expr>(RetExpr);
901 }
903  return cast_or_null<Expr>(RetExpr);
904 }
905 
906 SEHTryStmt::SEHTryStmt(bool IsCXXTry,
907  SourceLocation TryLoc,
908  Stmt *TryBlock,
909  Stmt *Handler)
910  : Stmt(SEHTryStmtClass),
911  IsCXXTry(IsCXXTry),
912  TryLoc(TryLoc)
913 {
914  Children[TRY] = TryBlock;
915  Children[HANDLER] = Handler;
916 }
917 
918 SEHTryStmt* SEHTryStmt::Create(const ASTContext &C, bool IsCXXTry,
919  SourceLocation TryLoc, Stmt *TryBlock,
920  Stmt *Handler) {
921  return new(C) SEHTryStmt(IsCXXTry,TryLoc,TryBlock,Handler);
922 }
923 
925  return dyn_cast<SEHExceptStmt>(getHandler());
926 }
927 
929  return dyn_cast<SEHFinallyStmt>(getHandler());
930 }
931 
932 SEHExceptStmt::SEHExceptStmt(SourceLocation Loc,
933  Expr *FilterExpr,
934  Stmt *Block)
935  : Stmt(SEHExceptStmtClass),
936  Loc(Loc)
937 {
938  Children[FILTER_EXPR] = FilterExpr;
939  Children[BLOCK] = Block;
940 }
941 
943  Expr *FilterExpr, Stmt *Block) {
944  return new(C) SEHExceptStmt(Loc,FilterExpr,Block);
945 }
946 
947 SEHFinallyStmt::SEHFinallyStmt(SourceLocation Loc,
948  Stmt *Block)
949  : Stmt(SEHFinallyStmtClass),
950  Loc(Loc),
951  Block(Block)
952 {}
953 
955  Stmt *Block) {
956  return new(C)SEHFinallyStmt(Loc,Block);
957 }
958 
960  VarDecl *Var)
961  : VarAndKind(Var, Kind), Loc(Loc) {
962  switch (Kind) {
963  case VCK_This:
964  assert(!Var && "'this' capture cannot have a variable!");
965  break;
966  case VCK_ByRef:
967  assert(Var && "capturing by reference must have a variable!");
968  break;
969  case VCK_ByCopy:
970  assert(Var && "capturing by copy must have a variable!");
971  assert(
972  (Var->getType()->isScalarType() || (Var->getType()->isReferenceType() &&
973  Var->getType()
974  ->castAs<ReferenceType>()
975  ->getPointeeType()
976  ->isScalarType())) &&
977  "captures by copy are expected to have a scalar type!");
978  break;
979  case VCK_VLAType:
980  assert(!Var &&
981  "Variable-length array type capture cannot have a variable!");
982  break;
983  }
984 }
985 
988  return VarAndKind.getInt();
989 }
990 
992  assert((capturesVariable() || capturesVariableByCopy()) &&
993  "No variable available for 'this' or VAT capture");
994  return VarAndKind.getPointer();
995 }
996 
997 CapturedStmt::Capture *CapturedStmt::getStoredCaptures() const {
998  unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
999 
1000  // Offset of the first Capture object.
1001  unsigned FirstCaptureOffset = llvm::alignTo(Size, llvm::alignOf<Capture>());
1002 
1003  return reinterpret_cast<Capture *>(
1004  reinterpret_cast<char *>(const_cast<CapturedStmt *>(this))
1005  + FirstCaptureOffset);
1006 }
1007 
1008 CapturedStmt::CapturedStmt(Stmt *S, CapturedRegionKind Kind,
1009  ArrayRef<Capture> Captures,
1010  ArrayRef<Expr *> CaptureInits,
1011  CapturedDecl *CD,
1012  RecordDecl *RD)
1013  : Stmt(CapturedStmtClass), NumCaptures(Captures.size()),
1014  CapDeclAndKind(CD, Kind), TheRecordDecl(RD) {
1015  assert( S && "null captured statement");
1016  assert(CD && "null captured declaration for captured statement");
1017  assert(RD && "null record declaration for captured statement");
1018 
1019  // Copy initialization expressions.
1020  Stmt **Stored = getStoredStmts();
1021  for (unsigned I = 0, N = NumCaptures; I != N; ++I)
1022  *Stored++ = CaptureInits[I];
1023 
1024  // Copy the statement being captured.
1025  *Stored = S;
1026 
1027  // Copy all Capture objects.
1028  Capture *Buffer = getStoredCaptures();
1029  std::copy(Captures.begin(), Captures.end(), Buffer);
1030 }
1031 
1032 CapturedStmt::CapturedStmt(EmptyShell Empty, unsigned NumCaptures)
1033  : Stmt(CapturedStmtClass, Empty), NumCaptures(NumCaptures),
1034  CapDeclAndKind(nullptr, CR_Default), TheRecordDecl(nullptr) {
1035  getStoredStmts()[NumCaptures] = nullptr;
1036 }
1037 
1039  CapturedRegionKind Kind,
1040  ArrayRef<Capture> Captures,
1041  ArrayRef<Expr *> CaptureInits,
1042  CapturedDecl *CD,
1043  RecordDecl *RD) {
1044  // The layout is
1045  //
1046  // -----------------------------------------------------------
1047  // | CapturedStmt, Init, ..., Init, S, Capture, ..., Capture |
1048  // ----------------^-------------------^----------------------
1049  // getStoredStmts() getStoredCaptures()
1050  //
1051  // where S is the statement being captured.
1052  //
1053  assert(CaptureInits.size() == Captures.size() && "wrong number of arguments");
1054 
1055  unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (Captures.size() + 1);
1056  if (!Captures.empty()) {
1057  // Realign for the following Capture array.
1058  Size = llvm::alignTo(Size, llvm::alignOf<Capture>());
1059  Size += sizeof(Capture) * Captures.size();
1060  }
1061 
1062  void *Mem = Context.Allocate(Size);
1063  return new (Mem) CapturedStmt(S, Kind, Captures, CaptureInits, CD, RD);
1064 }
1065 
1067  unsigned NumCaptures) {
1068  unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
1069  if (NumCaptures > 0) {
1070  // Realign for the following Capture array.
1071  Size = llvm::alignTo(Size, llvm::alignOf<Capture>());
1072  Size += sizeof(Capture) * NumCaptures;
1073  }
1074 
1075  void *Mem = Context.Allocate(Size);
1076  return new (Mem) CapturedStmt(EmptyShell(), NumCaptures);
1077 }
1078 
1079 Stmt::child_range CapturedStmt::children() {
1080  // Children are captured field initilizers.
1081  return child_range(getStoredStmts(), getStoredStmts() + NumCaptures);
1082 }
1083 
1085  return CapDeclAndKind.getPointer();
1086 }
1088  return CapDeclAndKind.getPointer();
1089 }
1090 
1091 /// \brief Set the outlined function declaration.
1093  assert(D && "null CapturedDecl");
1094  CapDeclAndKind.setPointer(D);
1095 }
1096 
1097 /// \brief Retrieve the captured region kind.
1099  return CapDeclAndKind.getInt();
1100 }
1101 
1102 /// \brief Set the captured region kind.
1104  CapDeclAndKind.setInt(Kind);
1105 }
1106 
1107 bool CapturedStmt::capturesVariable(const VarDecl *Var) const {
1108  for (const auto &I : captures()) {
1109  if (!I.capturesVariable())
1110  continue;
1111 
1112  // This does not handle variable redeclarations. This should be
1113  // extended to capture variables with redeclarations, for example
1114  // a thread-private variable in OpenMP.
1115  if (I.getCapturedVar() == Var)
1116  return true;
1117  }
1118 
1119  return false;
1120 }
static AttributedStmt * CreateEmpty(const ASTContext &C, unsigned NumAttrs)
Definition: Stmt.cpp:322
void setConditionVariable(const ASTContext &C, VarDecl *V)
Definition: Stmt.cpp:817
Defines the clang::ASTContext interface.
SourceLocation getEnd() const
Capture(SourceLocation Loc, VariableCaptureKind Kind, VarDecl *Var=nullptr)
Create a new capture.
Definition: Stmt.cpp:959
This represents a GCC inline-assembly statement extension.
Definition: Stmt.h:1565
unsigned getNumOutputs() const
Definition: Stmt.h:1462
static LLVM_READONLY bool isDigit(unsigned char c)
Return true if this character is an ASCII digit: [0-9].
Definition: CharInfo.h:94
void setStmts(const ASTContext &C, ArrayRef< Stmt * > Stmts)
Definition: Stmt.cpp:298
IdentifierInfo * getIdentifier() const
getIdentifier - Get the identifier that names this declaration, if there is one.
Definition: Decl.h:232
const internal::VariadicAllOfMatcher< Stmt > stmt
Matches statements.
Definition: ASTMatchers.h:985
const char * Name
Definition: Stmt.cpp:32
C Language Family Type Representation.
const Expr * getOutputExpr(unsigned i) const
Definition: Stmt.cpp:346
static LLVM_READONLY bool isLetter(unsigned char c)
Return true if this character is an ASCII letter: [a-zA-Z].
Definition: CharInfo.h:112
Represents an attribute applied to a statement.
Definition: Stmt.h:830
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)
Definition: Stmt.cpp:691
static CapturedStmt * Create(const ASTContext &Context, Stmt *S, CapturedRegionKind Kind, ArrayRef< Capture > Captures, ArrayRef< Expr * > CaptureInits, CapturedDecl *CD, RecordDecl *RD)
Definition: Stmt.cpp:1038
std::unique_ptr< llvm::MemoryBuffer > Buffer
unsigned NumOutputs
Definition: Stmt.h:1425
VarDecl * getConditionVariable() const
Retrieve the variable declared in this "for" statement, if any.
Definition: Stmt.cpp:809
void setConditionVariable(const ASTContext &C, VarDecl *V)
Definition: Stmt.cpp:879
std::string generateAsmString(const ASTContext &C) const
Assemble final IR asm string.
Definition: Stmt.cpp:650
void setInputExpr(unsigned i, Expr *E)
Definition: Stmt.cpp:683
void setInputExpr(unsigned i, Expr *E)
Definition: Stmt.cpp:411
VarDecl - An instance of this class is created to represent a variable declaration or definition...
Definition: Decl.h:768
VarDecl * getCapturedVar() const
Retrieve the declaration of the variable being captured.
Definition: Stmt.cpp:991
CapturedRegionKind getCapturedRegionKind() const
Retrieve the captured region kind.
Definition: Stmt.cpp:1098
Defines the Objective-C statement AST node classes.
static StringRef bytes(const std::vector< T, Allocator > &v)
Definition: ASTWriter.cpp:69
Defines the clang::Expr interface and subclasses for C++ expressions.
static struct StmtClassNameTable StmtClassInfo[Stmt::lastStmtConstant+1]
LabelStmt - Represents a label, which has a substatement.
Definition: Stmt.h:789
bool isOutputPlusConstraint(unsigned i) const
isOutputPlusConstraint - Return true if the specified output constraint is a "+" constraint (which is...
Definition: Stmt.h:1472
RecordDecl - Represents a struct/union/class.
Definition: Decl.h:3253
One of these records is kept for each identifier that is lexed.
bool isScalarType() const
Definition: Type.h:5715
IfStmt(const ASTContext &C, SourceLocation IL, bool IsConstexpr, Stmt *init, VarDecl *var, Expr *cond, Stmt *then, SourceLocation EL=SourceLocation(), Stmt *elsev=nullptr)
Definition: Stmt.cpp:766
unsigned getNumInputs() const
Definition: Stmt.h:1484
class LLVM_ALIGNAS(8) DependentTemplateSpecializationType const IdentifierInfo * Name
Represents a template specialization type whose template cannot be resolved, e.g. ...
Definition: Type.h:4549
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:92
WhileStmt(const ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body, SourceLocation WL)
Definition: Stmt.cpp:862
bool isReferenceType() const
Definition: Type.h:5491
void Deallocate(void *Ptr) const
Definition: ASTContext.h:574
Token - This structure provides full information about a lexed token.
Definition: Token.h:35
void setCapturedDecl(CapturedDecl *D)
Set the outlined function declaration.
Definition: Stmt.cpp:1092
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:48
OpenMPLinearClauseKind getModifier() const
Return modifier.
StringRef getOutputConstraint(unsigned i) const
getOutputConstraint - Return the constraint string for the specified output operand.
Definition: Stmt.cpp:338
const TargetInfo & getTargetInfo() const
Definition: ASTContext.h:588
const LangOptions & getLangOpts() const
Definition: ASTContext.h:604
StringRef getClobber(unsigned i) const
Definition: Stmt.cpp:393
Expr * getOutputExpr(unsigned i)
Definition: Stmt.cpp:397
StringLiteral * getClobberStringLiteral(unsigned i)
Definition: Stmt.h:1729
This represents the body of a CapturedStmt, and serves as its DeclContext.
Definition: Decl.h:3625
detail::InMemoryDirectory::const_iterator I
QualType getType() const
Definition: Decl.h:599
static SEHTryStmt * Create(const ASTContext &C, bool isCXXTry, SourceLocation TryLoc, Stmt *TryBlock, Stmt *Handler)
Definition: Stmt.cpp:918
unsigned NumClobbers
Definition: Stmt.h:1427
Describes the capture of either a variable, or 'this', or variable-length array type.
Definition: Stmt.h:2019
Stmt * getHandler() const
Definition: Stmt.h:1955
StringRef getInputConstraint(unsigned i) const
getInputConstraint - Return the specified input constraint.
Definition: Stmt.cpp:417
bool hasNoAsmVariants() const
Return true if {|} are normal characters in the asm string.
ASTContext * Context
std::string generateAsmString(const ASTContext &C) const
Assemble final IR asm string.
Definition: Stmt.cpp:330
std::string generateAsmString(const ASTContext &C) const
Assemble final IR asm string.
Definition: Stmt.cpp:671
Exposes information about the current target.
LabelDecl * getDecl() const
Definition: Stmt.h:806
Expr - This represents one expression.
Definition: Expr.h:105
const Expr * getInputExpr(unsigned i) const
Definition: Stmt.cpp:362
bool capturesVariable(const VarDecl *Var) const
True if this variable has been captured.
Definition: Stmt.cpp:1107
VarDecl * getConditionVariable() const
Retrieve the variable declared in this "while" statement, if any.
Definition: Stmt.cpp:871
AsmStringPiece - this is part of a decomposed asm string specification (for use with the AnalyzeAsmSt...
Definition: Stmt.h:1599
LabelDecl * getConstantTarget()
getConstantTarget - Returns the fixed target of this indirect goto, if one exists.
Definition: Stmt.cpp:891
child_range children()
Definition: Stmt.cpp:1079
StringRef getInputName(unsigned i) const
Definition: Stmt.h:1687
static StringRef copyIntoContext(const ASTContext &C, StringRef str)
Definition: Stmt.cpp:729
This represents a Microsoft inline-assembly statement extension.
Definition: Stmt.h:1744
Expr * getInputExpr(unsigned i)
Definition: Stmt.cpp:680
Expr * getOutputExpr(unsigned i)
Definition: Stmt.cpp:676
static AttributedStmt * Create(const ASTContext &C, SourceLocation Loc, ArrayRef< const Attr * > Attrs, Stmt *SubStmt)
Definition: Stmt.cpp:313
StringRef getInputConstraint(unsigned i) const
getInputConstraint - Return the specified input constraint.
Definition: Stmt.cpp:354
The result type of a method or function.
do v
Definition: arm_acle.h:78
const SourceManager & SM
Definition: Format.cpp:1184
static SEHFinallyStmt * Create(const ASTContext &C, SourceLocation FinallyLoc, Stmt *Block)
Definition: Stmt.cpp:954
AsmStmt is the base class for GCCAsmStmt and MSAsmStmt.
Definition: Stmt.h:1414
const StringLiteral * getAsmString() const
Definition: Stmt.h:1592
#define false
Definition: stdbool.h:33
Kind
This captures a statement into a function.
Definition: Stmt.h:2006
Encodes a location in the source.
char getModifier() const
getModifier - Get the modifier for this operand, if present.
Definition: Stmt.cpp:388
const char * getNameStart() const
Return the beginning of the actual null-terminated string for this identifier.
void setConstexpr(bool C)
Definition: Stmt.h:934
VariableCaptureKind getCaptureKind() const
Determine the kind of capture.
Definition: Stmt.cpp:987
DeclStmt - Adaptor class for mixing declarations with statements and expressions. ...
Definition: Stmt.h:443
LabelDecl - Represents the declaration of a label.
Definition: Decl.h:424
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)
Definition: Stmt.cpp:715
void setConditionVariable(const ASTContext &C, VarDecl *V)
Definition: Stmt.cpp:845
VarDecl * getConditionVariable() const
Retrieve the variable declared in this "switch" statement, if any.
Definition: Stmt.cpp:837
SEHExceptStmt * getExceptHandler() const
Returns 0 if not defined.
Definition: Stmt.cpp:924
Expr * getInputExpr(unsigned i)
Definition: Stmt.cpp:408
SourceLocation getBegin() const
const T * castAs() const
Member-template castAs<specific type>.
Definition: Type.h:5849
StringRef getOutputName(unsigned i) const
Definition: Stmt.h:1659
SourceRange getSourceRange() const override LLVM_READONLY
Definition: Decl.cpp:1840
const Decl * getSingleDecl() const
Definition: Stmt.h:461
AddrLabelExpr - The GNU address of label extension, representing &&label.
Definition: Expr.h:3339
VarDecl * getConditionVariable() const
Retrieve the variable declared in this "if" statement, if any.
Definition: Stmt.cpp:778
CompoundStmt(const ASTContext &C, ArrayRef< Stmt * > Stmts, SourceLocation LB, SourceLocation RB)
Definition: Stmt.cpp:282
child_range children()
unsigned AnalyzeAsmString(SmallVectorImpl< AsmStringPiece > &Pieces, const ASTContext &C, unsigned &DiagOffs) const
AnalyzeAsmString - Analyze the asm string of the current asm, decomposing it into pieces...
Definition: Stmt.cpp:475
static CapturedStmt * CreateDeserialized(const ASTContext &Context, unsigned NumCaptures)
Definition: Stmt.cpp:1066
SourceRange getSourceRange(const SourceRange &Range)
Returns the SourceRange of a SourceRange.
Definition: FixIt.h:34
unsigned Counter
Definition: Stmt.cpp:33
const StringLiteral * getOutputConstraintLiteral(unsigned i) const
Definition: Stmt.h:1668
StringRef getString() const
Definition: Expr.h:1514
static LLVM_ATTRIBUTE_UNUSED void check_implementations()
Check whether the various Stmt classes implement their member functions.
Definition: Stmt.cpp:199
detail::InMemoryDirectory::const_iterator E
const Expr * getRetValue() const
Definition: Stmt.cpp:899
void setConditionVariable(const ASTContext &C, VarDecl *V)
Definition: Stmt.cpp:786
This file defines OpenMP AST classes for executable directives and clauses.
SwitchStmt(const ASTContext &C, Stmt *Init, VarDecl *Var, Expr *cond)
Definition: Stmt.cpp:828
int getNamedOperand(StringRef SymbolicName) const
getNamedOperand - Given a symbolic operand reference like %[foo], translate this into a numeric value...
Definition: Stmt.cpp:455
unsigned getNumPlusOperands() const
getNumPlusOperands - Return the number of output operands that have a "+" constraint.
Definition: Stmt.cpp:380
Base for LValueReferenceType and RValueReferenceType.
Definition: Type.h:2319
ForStmt(const ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar, Expr *Inc, Stmt *Body, SourceLocation FL, SourceLocation LP, SourceLocation RP)
Definition: Stmt.cpp:797
StringRef getClobber(unsigned i) const
Definition: Stmt.cpp:370
Stmt * getSubStmt()
Definition: Stmt.cpp:856
SourceManager & getSourceManager()
Definition: ASTContext.h:561
Stmt ** Exprs
Definition: Stmt.h:1429
Expr * getTarget()
Definition: Stmt.h:1277
CapturedDecl * getCapturedDecl()
Retrieve the outlined function declaration.
Definition: Stmt.cpp:1084
const StringLiteral * getInputConstraintLiteral(unsigned i) const
Definition: Stmt.h:1696
unsigned Size
Definition: Stmt.cpp:34
void * Allocate(size_t Size, unsigned Align=8) const
Definition: ASTContext.h:568
VariableCaptureKind
The different capture forms: by 'this', by reference, capture for variable-length array type etc...
Definition: Stmt.h:2010
bool isSimple() const
Definition: Stmt.h:1446
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1466
Defines the clang::TargetInfo interface.
StringRef getOutputConstraint(unsigned i) const
getOutputConstraint - Return the constraint string for the specified output operand.
Definition: Stmt.cpp:404
capture_range captures()
Definition: Stmt.h:2140
CapturedRegionKind
The different kinds of captured statement.
Definition: CapturedStmt.h:17
static StmtClassNameTable & getStmtInfoTableEntry(Stmt::StmtClass E)
Definition: Stmt.cpp:37
A trivial tuple used to represent a source range.
unsigned NumInputs
Definition: Stmt.h:1426
SourceLocation getLocationOfByte(unsigned ByteNo, const SourceManager &SM, const LangOptions &Features, const TargetInfo &Target, unsigned *StartToken=nullptr, unsigned *StartTokenByteOffset=nullptr) const
getLocationOfByte - Return a source location that points to the specified byte of this string literal...
Definition: Expr.cpp:1009
const char * getName() const
Definition: Stmt.cpp:309
static SEHExceptStmt * Create(const ASTContext &C, SourceLocation ExceptLoc, Expr *FilterExpr, Stmt *Block)
Definition: Stmt.cpp:942
This class handles loading and caching of source files into memory.
void setCapturedRegionKind(CapturedRegionKind Kind)
Set the captured region kind.
Definition: Stmt.cpp:1103
Attr - This represents one attribute.
Definition: Attr.h:45
SEHFinallyStmt * getFinallyHandler() const
Definition: Stmt.cpp:928
#define BLOCK(DERIVED, BASE)
Definition: Template.h:423