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1121 lines
36 KiB
1121 lines
36 KiB
//===--- Stmt.cpp - Statement AST Node Implementation ---------------------===//
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//
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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
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Stmt class and statement subclasses.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/ASTDiagnostic.h"
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#include "clang/AST/ExprCXX.h"
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#include "clang/AST/ExprObjC.h"
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#include "clang/AST/ExprOpenMP.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"
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#include "clang/AST/StmtOpenMP.h"
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#include "clang/AST/Type.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Lex/Token.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/raw_ostream.h"
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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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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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// 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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void *Stmt::operator new(size_t bytes, const ASTContext& C,
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unsigned alignment) {
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return ::operator new(bytes, C, alignment);
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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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}
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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;
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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 == nullptr) 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;
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for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
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if (StmtClassInfo[i].Name == nullptr) continue;
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if (StmtClassInfo[i].Counter == 0) continue;
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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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llvm::errs() << "Total bytes = " << sum << "\n";
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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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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 (auto *ewc = dyn_cast<ExprWithCleanups>(s))
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s = ewc->getSubExpr();
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if (auto *mte = dyn_cast<MaterializeTemporaryExpr>(s))
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s = mte->GetTemporaryExpr();
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if (auto *bte = dyn_cast<CXXBindTemporaryExpr>(s))
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s = bte->getSubExpr();
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while (auto *ice = dyn_cast<ImplicitCastExpr>(s))
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s = ice->getSubExpr();
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return s;
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}
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/// \brief Skip no-op (attributed, compound) container stmts and skip captured
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/// stmt at the top, if \a IgnoreCaptured is true.
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Stmt *Stmt::IgnoreContainers(bool IgnoreCaptured) {
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Stmt *S = this;
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if (IgnoreCaptured)
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if (auto CapS = dyn_cast_or_null<CapturedStmt>(S))
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S = CapS->getCapturedStmt();
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while (true) {
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if (auto AS = dyn_cast_or_null<AttributedStmt>(S))
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S = AS->getSubStmt();
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else if (auto CS = dyn_cast_or_null<CompoundStmt>(S)) {
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if (CS->size() != 1)
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break;
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S = CS->body_back();
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} else
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break;
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}
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return S;
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}
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/// \brief Strip off all label-like statements.
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///
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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
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// 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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}
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typedef SourceLocation getLocStart_t() const;
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template <class T> good implements_getLocStart(getLocStart_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_getLocStart(getLocStart_t Stmt::*) {
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return bad();
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}
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typedef SourceLocation getLocEnd_t() const;
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template <class T> good implements_getLocEnd(getLocEnd_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_getLocEnd(getLocEnd_t Stmt::*) {
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return bad();
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}
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#define ASSERT_IMPLEMENTS_children(type) \
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(void) is_good(implements_children(&type::children))
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#define ASSERT_IMPLEMENTS_getLocStart(type) \
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(void) is_good(implements_getLocStart(&type::getLocStart))
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#define ASSERT_IMPLEMENTS_getLocEnd(type) \
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(void) is_good(implements_getLocEnd(&type::getLocEnd))
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}
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/// Check whether the various Stmt classes implement their member
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/// functions.
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LLVM_ATTRIBUTE_UNUSED
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static inline void check_implementations() {
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#define ABSTRACT_STMT(type)
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#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);
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#include "clang/AST/StmtNodes.inc"
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}
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Stmt::child_range Stmt::children() {
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switch (getStmtClass()) {
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case Stmt::NoStmtClass: llvm_unreachable("statement without class");
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#define ABSTRACT_STMT(type)
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#define STMT(type, base) \
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case Stmt::type##Class: \
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return static_cast<type*>(this)->children();
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#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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// Amusing macro metaprogramming hack: check whether a class provides
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// a more specific implementation of getSourceRange.
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//
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// See also Expr.cpp:getExprLoc().
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namespace {
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/// This implementation is used when a class provides a custom
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/// implementation of getSourceRange.
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template <class S, class T>
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SourceRange getSourceRangeImpl(const Stmt *stmt,
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SourceRange (T::*v)() const) {
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return static_cast<const S*>(stmt)->getSourceRange();
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}
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/// This implementation is used when a class doesn't provide a custom
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/// implementation of getSourceRange. Overload resolution should pick it over
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/// the implementation above because it's more specialized according to
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/// function template partial ordering.
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template <class S>
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SourceRange getSourceRangeImpl(const Stmt *stmt,
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SourceRange (Stmt::*v)() const) {
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return SourceRange(static_cast<const S*>(stmt)->getLocStart(),
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static_cast<const S*>(stmt)->getLocEnd());
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}
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}
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SourceRange Stmt::getSourceRange() const {
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switch (getStmtClass()) {
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case Stmt::NoStmtClass: llvm_unreachable("statement without class");
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#define ABSTRACT_STMT(type)
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#define STMT(type, base) \
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case Stmt::type##Class: \
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return getSourceRangeImpl<type>(this, &type::getSourceRange);
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#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");
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#define ABSTRACT_STMT(type)
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#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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}
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llvm_unreachable("unknown statement kind");
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}
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SourceLocation Stmt::getLocEnd() const {
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switch (getStmtClass()) {
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case Stmt::NoStmtClass: llvm_unreachable("statement without class");
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#define ABSTRACT_STMT(type)
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#define STMT(type, base) \
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case Stmt::type##Class: \
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return static_cast<const type*>(this)->getLocEnd();
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#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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CompoundStmt::CompoundStmt(const ASTContext &C, ArrayRef<Stmt*> Stmts,
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SourceLocation LB, SourceLocation RB)
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: Stmt(CompoundStmtClass), LBraceLoc(LB), RBraceLoc(RB) {
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CompoundStmtBits.NumStmts = Stmts.size();
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assert(CompoundStmtBits.NumStmts == Stmts.size() &&
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"NumStmts doesn't fit in bits of CompoundStmtBits.NumStmts!");
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if (Stmts.size() == 0) {
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Body = nullptr;
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return;
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}
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Body = new (C) Stmt*[Stmts.size()];
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std::copy(Stmts.begin(), Stmts.end(), Body);
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}
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void CompoundStmt::setStmts(const ASTContext &C, ArrayRef<Stmt *> Stmts) {
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if (Body)
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C.Deallocate(Body);
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CompoundStmtBits.NumStmts = Stmts.size();
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assert(CompoundStmtBits.NumStmts == Stmts.size() &&
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"NumStmts doesn't fit in bits of CompoundStmtBits.NumStmts!");
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Body = new (C) Stmt*[Stmts.size()];
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std::copy(Stmts.begin(), Stmts.end(), Body);
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}
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const char *LabelStmt::getName() const {
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return getDecl()->getIdentifier()->getNameStart();
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}
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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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assert(!Attrs.empty() && "Attrs should not be empty");
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void *Mem = C.Allocate(sizeof(AttributedStmt) + sizeof(Attr *) * Attrs.size(),
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llvm::alignOf<AttributedStmt>());
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return new (Mem) AttributedStmt(Loc, Attrs, SubStmt);
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}
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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");
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void *Mem = C.Allocate(sizeof(AttributedStmt) + sizeof(Attr *) * NumAttrs,
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llvm::alignOf<AttributedStmt>());
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return new (Mem) AttributedStmt(EmptyShell(), NumAttrs);
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}
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std::string AsmStmt::generateAsmString(const ASTContext &C) const {
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if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
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return gccAsmStmt->generateAsmString(C);
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if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
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return msAsmStmt->generateAsmString(C);
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llvm_unreachable("unknown asm statement kind!");
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}
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StringRef AsmStmt::getOutputConstraint(unsigned i) const {
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if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
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return gccAsmStmt->getOutputConstraint(i);
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if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
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return msAsmStmt->getOutputConstraint(i);
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llvm_unreachable("unknown asm statement kind!");
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}
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const Expr *AsmStmt::getOutputExpr(unsigned i) const {
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if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
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return gccAsmStmt->getOutputExpr(i);
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if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
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return msAsmStmt->getOutputExpr(i);
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llvm_unreachable("unknown asm statement kind!");
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}
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StringRef AsmStmt::getInputConstraint(unsigned i) const {
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if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
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return gccAsmStmt->getInputConstraint(i);
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if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
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return msAsmStmt->getInputConstraint(i);
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llvm_unreachable("unknown asm statement kind!");
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}
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const Expr *AsmStmt::getInputExpr(unsigned i) const {
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if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
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return gccAsmStmt->getInputExpr(i);
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if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
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return msAsmStmt->getInputExpr(i);
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llvm_unreachable("unknown asm statement kind!");
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}
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StringRef AsmStmt::getClobber(unsigned i) const {
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if (const GCCAsmStmt *gccAsmStmt = dyn_cast<GCCAsmStmt>(this))
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return gccAsmStmt->getClobber(i);
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if (const MSAsmStmt *msAsmStmt = dyn_cast<MSAsmStmt>(this))
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return msAsmStmt->getClobber(i);
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llvm_unreachable("unknown asm statement kind!");
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}
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/// getNumPlusOperands - Return the number of output operands that have a "+"
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/// constraint.
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unsigned AsmStmt::getNumPlusOperands() const {
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unsigned Res = 0;
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for (unsigned i = 0, e = getNumOutputs(); i != e; ++i)
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if (isOutputPlusConstraint(i))
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++Res;
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return Res;
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}
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char GCCAsmStmt::AsmStringPiece::getModifier() const {
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assert(isOperand() && "Only Operands can have modifiers.");
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return isLetter(Str[0]) ? Str[0] : '\0';
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}
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StringRef GCCAsmStmt::getClobber(unsigned i) const {
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return getClobberStringLiteral(i)->getString();
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}
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Expr *GCCAsmStmt::getOutputExpr(unsigned i) {
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return cast<Expr>(Exprs[i]);
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}
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/// getOutputConstraint - Return the constraint string for the specified
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/// output operand. All output constraints are known to be non-empty (either
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/// '=' or '+').
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StringRef GCCAsmStmt::getOutputConstraint(unsigned i) const {
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return getOutputConstraintLiteral(i)->getString();
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}
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Expr *GCCAsmStmt::getInputExpr(unsigned i) {
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return cast<Expr>(Exprs[i + NumOutputs]);
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}
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void GCCAsmStmt::setInputExpr(unsigned i, Expr *E) {
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Exprs[i + NumOutputs] = E;
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}
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/// getInputConstraint - Return the specified input constraint. Unlike output
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/// constraints, these can be empty.
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StringRef GCCAsmStmt::getInputConstraint(unsigned i) const {
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return getInputConstraintLiteral(i)->getString();
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}
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void GCCAsmStmt::setOutputsAndInputsAndClobbers(const ASTContext &C,
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IdentifierInfo **Names,
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StringLiteral **Constraints,
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Stmt **Exprs,
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unsigned NumOutputs,
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unsigned NumInputs,
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StringLiteral **Clobbers,
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unsigned NumClobbers) {
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this->NumOutputs = NumOutputs;
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this->NumInputs = NumInputs;
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this->NumClobbers = NumClobbers;
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unsigned NumExprs = NumOutputs + NumInputs;
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C.Deallocate(this->Names);
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this->Names = new (C) IdentifierInfo*[NumExprs];
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std::copy(Names, Names + NumExprs, this->Names);
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C.Deallocate(this->Exprs);
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this->Exprs = new (C) Stmt*[NumExprs];
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std::copy(Exprs, Exprs + NumExprs, this->Exprs);
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C.Deallocate(this->Constraints);
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this->Constraints = new (C) StringLiteral*[NumExprs];
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std::copy(Constraints, Constraints + NumExprs, this->Constraints);
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C.Deallocate(this->Clobbers);
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this->Clobbers = new (C) StringLiteral*[NumClobbers];
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std::copy(Clobbers, Clobbers + NumClobbers, this->Clobbers);
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}
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/// getNamedOperand - Given a symbolic operand reference like %[foo],
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/// translate this into a numeric value needed to reference the same operand.
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/// This returns -1 if the operand name is invalid.
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int GCCAsmStmt::getNamedOperand(StringRef SymbolicName) const {
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unsigned NumPlusOperands = 0;
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// Check if this is an output operand.
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for (unsigned i = 0, e = getNumOutputs(); i != e; ++i) {
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if (getOutputName(i) == SymbolicName)
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return i;
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}
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for (unsigned i = 0, e = getNumInputs(); i != e; ++i)
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if (getInputName(i) == SymbolicName)
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return getNumOutputs() + NumPlusOperands + i;
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// Not found.
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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 += "$$";
|
|
break;
|
|
default:
|
|
Result += *CurPtr;
|
|
break;
|
|
}
|
|
}
|
|
Pieces.push_back(AsmStringPiece(Result));
|
|
return 0;
|
|
}
|
|
|
|
// CurStringPiece - The current string that we are building up as we scan the
|
|
// asm string.
|
|
std::string CurStringPiece;
|
|
|
|
bool HasVariants = !C.getTargetInfo().hasNoAsmVariants();
|
|
|
|
unsigned LastAsmStringToken = 0;
|
|
unsigned LastAsmStringOffset = 0;
|
|
|
|
while (1) {
|
|
// Done with the string?
|
|
if (CurPtr == StrEnd) {
|
|
if (!CurStringPiece.empty())
|
|
Pieces.push_back(AsmStringPiece(CurStringPiece));
|
|
return 0;
|
|
}
|
|
|
|
char CurChar = *CurPtr++;
|
|
switch (CurChar) {
|
|
case '$': CurStringPiece += "$$"; 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 operands that have asmSymbolicName (e.g., %x[foo]) and those that
|
|
// don't (e.g., %x4). 'x' following the '%' is the constraint modifier.
|
|
|
|
const char *Begin = CurPtr - 1; // Points to the character following '%'.
|
|
const char *Percent = Begin - 1; // Points to '%'.
|
|
|
|
if (isLetter(EscapedChar)) {
|
|
if (CurPtr == StrEnd) { // Premature end.
|
|
DiagOffs = CurPtr-StrStart-1;
|
|
return diag::err_asm_invalid_escape;
|
|
}
|
|
EscapedChar = *CurPtr++;
|
|
}
|
|
|
|
const TargetInfo &TI = C.getTargetInfo();
|
|
const SourceManager &SM = C.getSourceManager();
|
|
const LangOptions &LO = C.getLangOpts();
|
|
|
|
// Handle operands that don't have asmSymbolicName (e.g., %x4).
|
|
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;
|
|
}
|
|
|
|
// Str contains "x4" (Operand without the leading %).
|
|
std::string Str(Begin, CurPtr - Begin);
|
|
|
|
// (BeginLoc, EndLoc) represents the range of the operand we are currently
|
|
// processing. Unlike Str, the range includes the leading '%'.
|
|
SourceLocation BeginLoc = getAsmString()->getLocationOfByte(
|
|
Percent - StrStart, SM, LO, TI, &LastAsmStringToken,
|
|
&LastAsmStringOffset);
|
|
SourceLocation EndLoc = getAsmString()->getLocationOfByte(
|
|
CurPtr - StrStart, SM, LO, TI, &LastAsmStringToken,
|
|
&LastAsmStringOffset);
|
|
|
|
Pieces.emplace_back(N, std::move(Str), BeginLoc, EndLoc);
|
|
continue;
|
|
}
|
|
|
|
// Handle operands that have asmSymbolicName (e.g., %x[foo]).
|
|
if (EscapedChar == '[') {
|
|
DiagOffs = CurPtr-StrStart-1;
|
|
|
|
// Find the ']'.
|
|
const char *NameEnd = (const char*)memchr(CurPtr, ']', StrEnd-CurPtr);
|
|
if (NameEnd == nullptr)
|
|
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;
|
|
}
|
|
|
|
// Str contains "x[foo]" (Operand without the leading %).
|
|
std::string Str(Begin, NameEnd + 1 - Begin);
|
|
|
|
// (BeginLoc, EndLoc) represents the range of the operand we are currently
|
|
// processing. Unlike Str, the range includes the leading '%'.
|
|
SourceLocation BeginLoc = getAsmString()->getLocationOfByte(
|
|
Percent - StrStart, SM, LO, TI, &LastAsmStringToken,
|
|
&LastAsmStringOffset);
|
|
SourceLocation EndLoc = getAsmString()->getLocationOfByte(
|
|
NameEnd + 1 - StrStart, SM, LO, TI, &LastAsmStringToken,
|
|
&LastAsmStringOffset);
|
|
|
|
Pieces.emplace_back(N, std::move(Str), BeginLoc, EndLoc);
|
|
|
|
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;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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) {
|
|
return str.copy(C);
|
|
}
|
|
|
|
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());
|
|
|
|
assert(exprs.size() == NumOutputs + NumInputs);
|
|
assert(exprs.size() == constraints.size());
|
|
|
|
AsmStr = copyIntoContext(C, asmstr);
|
|
|
|
Exprs = new (C) Stmt*[exprs.size()];
|
|
std::copy(exprs.begin(), exprs.end(), Exprs);
|
|
|
|
AsmToks = new (C) Token[asmtoks.size()];
|
|
std::copy(asmtoks.begin(), asmtoks.end(), AsmToks);
|
|
|
|
Constraints = new (C) StringRef[exprs.size()];
|
|
std::transform(constraints.begin(), constraints.end(), Constraints,
|
|
[&](StringRef Constraint) {
|
|
return copyIntoContext(C, Constraint);
|
|
});
|
|
|
|
Clobbers = new (C) StringRef[NumClobbers];
|
|
// FIXME: Avoid the allocation/copy if at all possible.
|
|
std::transform(clobbers.begin(), clobbers.end(), Clobbers,
|
|
[&](StringRef Clobber) {
|
|
return copyIntoContext(C, Clobber);
|
|
});
|
|
}
|
|
|
|
IfStmt::IfStmt(const ASTContext &C, SourceLocation IL, bool IsConstexpr,
|
|
Stmt *init, VarDecl *var, Expr *cond, Stmt *then,
|
|
SourceLocation EL, Stmt *elsev)
|
|
: Stmt(IfStmtClass), IfLoc(IL), ElseLoc(EL) {
|
|
setConstexpr(IsConstexpr);
|
|
setConditionVariable(C, var);
|
|
SubExprs[INIT] = init;
|
|
SubExprs[COND] = cond;
|
|
SubExprs[THEN] = then;
|
|
SubExprs[ELSE] = elsev;
|
|
}
|
|
|
|
VarDecl *IfStmt::getConditionVariable() const {
|
|
if (!SubExprs[VAR])
|
|
return nullptr;
|
|
|
|
DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
|
|
return cast<VarDecl>(DS->getSingleDecl());
|
|
}
|
|
|
|
void IfStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
|
|
if (!V) {
|
|
SubExprs[VAR] = nullptr;
|
|
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 nullptr;
|
|
|
|
DeclStmt *DS = cast<DeclStmt>(SubExprs[CONDVAR]);
|
|
return cast<VarDecl>(DS->getSingleDecl());
|
|
}
|
|
|
|
void ForStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
|
|
if (!V) {
|
|
SubExprs[CONDVAR] = nullptr;
|
|
return;
|
|
}
|
|
|
|
SourceRange VarRange = V->getSourceRange();
|
|
SubExprs[CONDVAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
|
|
VarRange.getEnd());
|
|
}
|
|
|
|
SwitchStmt::SwitchStmt(const ASTContext &C, Stmt *init, VarDecl *Var,
|
|
Expr *cond)
|
|
: Stmt(SwitchStmtClass), FirstCase(nullptr, false) {
|
|
setConditionVariable(C, Var);
|
|
SubExprs[INIT] = init;
|
|
SubExprs[COND] = cond;
|
|
SubExprs[BODY] = nullptr;
|
|
}
|
|
|
|
VarDecl *SwitchStmt::getConditionVariable() const {
|
|
if (!SubExprs[VAR])
|
|
return nullptr;
|
|
|
|
DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
|
|
return cast<VarDecl>(DS->getSingleDecl());
|
|
}
|
|
|
|
void SwitchStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
|
|
if (!V) {
|
|
SubExprs[VAR] = nullptr;
|
|
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 nullptr;
|
|
|
|
DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
|
|
return cast<VarDecl>(DS->getSingleDecl());
|
|
}
|
|
|
|
void WhileStmt::setConditionVariable(const ASTContext &C, VarDecl *V) {
|
|
if (!V) {
|
|
SubExprs[VAR] = nullptr;
|
|
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 nullptr;
|
|
}
|
|
|
|
// ReturnStmt
|
|
const Expr* ReturnStmt::getRetValue() const {
|
|
return cast_or_null<Expr>(RetExpr);
|
|
}
|
|
Expr* ReturnStmt::getRetValue() {
|
|
return cast_or_null<Expr>(RetExpr);
|
|
}
|
|
|
|
SEHTryStmt::SEHTryStmt(bool IsCXXTry,
|
|
SourceLocation TryLoc,
|
|
Stmt *TryBlock,
|
|
Stmt *Handler)
|
|
: Stmt(SEHTryStmtClass),
|
|
IsCXXTry(IsCXXTry),
|
|
TryLoc(TryLoc)
|
|
{
|
|
Children[TRY] = TryBlock;
|
|
Children[HANDLER] = Handler;
|
|
}
|
|
|
|
SEHTryStmt* SEHTryStmt::Create(const ASTContext &C, bool IsCXXTry,
|
|
SourceLocation TryLoc, Stmt *TryBlock,
|
|
Stmt *Handler) {
|
|
return new(C) SEHTryStmt(IsCXXTry,TryLoc,TryBlock,Handler);
|
|
}
|
|
|
|
SEHExceptStmt* SEHTryStmt::getExceptHandler() const {
|
|
return dyn_cast<SEHExceptStmt>(getHandler());
|
|
}
|
|
|
|
SEHFinallyStmt* SEHTryStmt::getFinallyHandler() const {
|
|
return dyn_cast<SEHFinallyStmt>(getHandler());
|
|
}
|
|
|
|
SEHExceptStmt::SEHExceptStmt(SourceLocation Loc,
|
|
Expr *FilterExpr,
|
|
Stmt *Block)
|
|
: Stmt(SEHExceptStmtClass),
|
|
Loc(Loc)
|
|
{
|
|
Children[FILTER_EXPR] = FilterExpr;
|
|
Children[BLOCK] = Block;
|
|
}
|
|
|
|
SEHExceptStmt* SEHExceptStmt::Create(const ASTContext &C, SourceLocation Loc,
|
|
Expr *FilterExpr, Stmt *Block) {
|
|
return new(C) SEHExceptStmt(Loc,FilterExpr,Block);
|
|
}
|
|
|
|
SEHFinallyStmt::SEHFinallyStmt(SourceLocation Loc,
|
|
Stmt *Block)
|
|
: Stmt(SEHFinallyStmtClass),
|
|
Loc(Loc),
|
|
Block(Block)
|
|
{}
|
|
|
|
SEHFinallyStmt* SEHFinallyStmt::Create(const ASTContext &C, SourceLocation Loc,
|
|
Stmt *Block) {
|
|
return new(C)SEHFinallyStmt(Loc,Block);
|
|
}
|
|
|
|
CapturedStmt::Capture::Capture(SourceLocation Loc, VariableCaptureKind Kind,
|
|
VarDecl *Var)
|
|
: VarAndKind(Var, Kind), Loc(Loc) {
|
|
switch (Kind) {
|
|
case VCK_This:
|
|
assert(!Var && "'this' capture cannot have a variable!");
|
|
break;
|
|
case VCK_ByRef:
|
|
assert(Var && "capturing by reference must have a variable!");
|
|
break;
|
|
case VCK_ByCopy:
|
|
assert(Var && "capturing by copy must have a variable!");
|
|
assert(
|
|
(Var->getType()->isScalarType() || (Var->getType()->isReferenceType() &&
|
|
Var->getType()
|
|
->castAs<ReferenceType>()
|
|
->getPointeeType()
|
|
->isScalarType())) &&
|
|
"captures by copy are expected to have a scalar type!");
|
|
break;
|
|
case VCK_VLAType:
|
|
assert(!Var &&
|
|
"Variable-length array type capture cannot have a variable!");
|
|
break;
|
|
}
|
|
}
|
|
|
|
CapturedStmt::VariableCaptureKind
|
|
CapturedStmt::Capture::getCaptureKind() const {
|
|
return VarAndKind.getInt();
|
|
}
|
|
|
|
VarDecl *CapturedStmt::Capture::getCapturedVar() const {
|
|
assert((capturesVariable() || capturesVariableByCopy()) &&
|
|
"No variable available for 'this' or VAT capture");
|
|
return VarAndKind.getPointer();
|
|
}
|
|
|
|
CapturedStmt::Capture *CapturedStmt::getStoredCaptures() const {
|
|
unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
|
|
|
|
// Offset of the first Capture object.
|
|
unsigned FirstCaptureOffset = llvm::alignTo(Size, llvm::alignOf<Capture>());
|
|
|
|
return reinterpret_cast<Capture *>(
|
|
reinterpret_cast<char *>(const_cast<CapturedStmt *>(this))
|
|
+ FirstCaptureOffset);
|
|
}
|
|
|
|
CapturedStmt::CapturedStmt(Stmt *S, CapturedRegionKind Kind,
|
|
ArrayRef<Capture> Captures,
|
|
ArrayRef<Expr *> CaptureInits,
|
|
CapturedDecl *CD,
|
|
RecordDecl *RD)
|
|
: Stmt(CapturedStmtClass), NumCaptures(Captures.size()),
|
|
CapDeclAndKind(CD, Kind), TheRecordDecl(RD) {
|
|
assert( S && "null captured statement");
|
|
assert(CD && "null captured declaration for captured statement");
|
|
assert(RD && "null record declaration for captured statement");
|
|
|
|
// Copy initialization expressions.
|
|
Stmt **Stored = getStoredStmts();
|
|
for (unsigned I = 0, N = NumCaptures; I != N; ++I)
|
|
*Stored++ = CaptureInits[I];
|
|
|
|
// Copy the statement being captured.
|
|
*Stored = S;
|
|
|
|
// Copy all Capture objects.
|
|
Capture *Buffer = getStoredCaptures();
|
|
std::copy(Captures.begin(), Captures.end(), Buffer);
|
|
}
|
|
|
|
CapturedStmt::CapturedStmt(EmptyShell Empty, unsigned NumCaptures)
|
|
: Stmt(CapturedStmtClass, Empty), NumCaptures(NumCaptures),
|
|
CapDeclAndKind(nullptr, CR_Default), TheRecordDecl(nullptr) {
|
|
getStoredStmts()[NumCaptures] = nullptr;
|
|
}
|
|
|
|
CapturedStmt *CapturedStmt::Create(const ASTContext &Context, Stmt *S,
|
|
CapturedRegionKind Kind,
|
|
ArrayRef<Capture> Captures,
|
|
ArrayRef<Expr *> CaptureInits,
|
|
CapturedDecl *CD,
|
|
RecordDecl *RD) {
|
|
// The layout is
|
|
//
|
|
// -----------------------------------------------------------
|
|
// | CapturedStmt, Init, ..., Init, S, Capture, ..., Capture |
|
|
// ----------------^-------------------^----------------------
|
|
// getStoredStmts() getStoredCaptures()
|
|
//
|
|
// where S is the statement being captured.
|
|
//
|
|
assert(CaptureInits.size() == Captures.size() && "wrong number of arguments");
|
|
|
|
unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (Captures.size() + 1);
|
|
if (!Captures.empty()) {
|
|
// Realign for the following Capture array.
|
|
Size = llvm::alignTo(Size, llvm::alignOf<Capture>());
|
|
Size += sizeof(Capture) * Captures.size();
|
|
}
|
|
|
|
void *Mem = Context.Allocate(Size);
|
|
return new (Mem) CapturedStmt(S, Kind, Captures, CaptureInits, CD, RD);
|
|
}
|
|
|
|
CapturedStmt *CapturedStmt::CreateDeserialized(const ASTContext &Context,
|
|
unsigned NumCaptures) {
|
|
unsigned Size = sizeof(CapturedStmt) + sizeof(Stmt *) * (NumCaptures + 1);
|
|
if (NumCaptures > 0) {
|
|
// Realign for the following Capture array.
|
|
Size = llvm::alignTo(Size, llvm::alignOf<Capture>());
|
|
Size += sizeof(Capture) * NumCaptures;
|
|
}
|
|
|
|
void *Mem = Context.Allocate(Size);
|
|
return new (Mem) CapturedStmt(EmptyShell(), NumCaptures);
|
|
}
|
|
|
|
Stmt::child_range CapturedStmt::children() {
|
|
// Children are captured field initilizers.
|
|
return child_range(getStoredStmts(), getStoredStmts() + NumCaptures);
|
|
}
|
|
|
|
CapturedDecl *CapturedStmt::getCapturedDecl() {
|
|
return CapDeclAndKind.getPointer();
|
|
}
|
|
const CapturedDecl *CapturedStmt::getCapturedDecl() const {
|
|
return CapDeclAndKind.getPointer();
|
|
}
|
|
|
|
/// \brief Set the outlined function declaration.
|
|
void CapturedStmt::setCapturedDecl(CapturedDecl *D) {
|
|
assert(D && "null CapturedDecl");
|
|
CapDeclAndKind.setPointer(D);
|
|
}
|
|
|
|
/// \brief Retrieve the captured region kind.
|
|
CapturedRegionKind CapturedStmt::getCapturedRegionKind() const {
|
|
return CapDeclAndKind.getInt();
|
|
}
|
|
|
|
/// \brief Set the captured region kind.
|
|
void CapturedStmt::setCapturedRegionKind(CapturedRegionKind Kind) {
|
|
CapDeclAndKind.setInt(Kind);
|
|
}
|
|
|
|
bool CapturedStmt::capturesVariable(const VarDecl *Var) const {
|
|
for (const auto &I : captures()) {
|
|
if (!I.capturesVariable())
|
|
continue;
|
|
|
|
// This does not handle variable redeclarations. This should be
|
|
// extended to capture variables with redeclarations, for example
|
|
// a thread-private variable in OpenMP.
|
|
if (I.getCapturedVar() == Var)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|