You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
596 lines
18 KiB
596 lines
18 KiB
//===--- Transforms.cpp - Transformations to ARC mode ---------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Transforms.h"
|
|
#include "Internals.h"
|
|
#include "clang/ARCMigrate/ARCMT.h"
|
|
#include "clang/AST/ASTContext.h"
|
|
#include "clang/AST/RecursiveASTVisitor.h"
|
|
#include "clang/Analysis/DomainSpecific/CocoaConventions.h"
|
|
#include "clang/Basic/SourceManager.h"
|
|
#include "clang/Basic/TargetInfo.h"
|
|
#include "clang/Lex/Lexer.h"
|
|
#include "clang/Lex/Preprocessor.h"
|
|
#include "clang/Sema/Sema.h"
|
|
|
|
using namespace clang;
|
|
using namespace arcmt;
|
|
using namespace trans;
|
|
|
|
ASTTraverser::~ASTTraverser() { }
|
|
|
|
bool MigrationPass::CFBridgingFunctionsDefined() {
|
|
if (!EnableCFBridgeFns.hasValue())
|
|
EnableCFBridgeFns = SemaRef.isKnownName("CFBridgingRetain") &&
|
|
SemaRef.isKnownName("CFBridgingRelease");
|
|
return *EnableCFBridgeFns;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Helpers.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
bool trans::canApplyWeak(ASTContext &Ctx, QualType type,
|
|
bool AllowOnUnknownClass) {
|
|
if (!Ctx.getLangOpts().ObjCWeakRuntime)
|
|
return false;
|
|
|
|
QualType T = type;
|
|
if (T.isNull())
|
|
return false;
|
|
|
|
// iOS is always safe to use 'weak'.
|
|
if (Ctx.getTargetInfo().getTriple().isiOS() ||
|
|
Ctx.getTargetInfo().getTriple().isWatchOS())
|
|
AllowOnUnknownClass = true;
|
|
|
|
while (const PointerType *ptr = T->getAs<PointerType>())
|
|
T = ptr->getPointeeType();
|
|
if (const ObjCObjectPointerType *ObjT = T->getAs<ObjCObjectPointerType>()) {
|
|
ObjCInterfaceDecl *Class = ObjT->getInterfaceDecl();
|
|
if (!AllowOnUnknownClass && (!Class || Class->getName() == "NSObject"))
|
|
return false; // id/NSObject is not safe for weak.
|
|
if (!AllowOnUnknownClass && !Class->hasDefinition())
|
|
return false; // forward classes are not verifiable, therefore not safe.
|
|
if (Class && Class->isArcWeakrefUnavailable())
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool trans::isPlusOneAssign(const BinaryOperator *E) {
|
|
if (E->getOpcode() != BO_Assign)
|
|
return false;
|
|
|
|
return isPlusOne(E->getRHS());
|
|
}
|
|
|
|
bool trans::isPlusOne(const Expr *E) {
|
|
if (!E)
|
|
return false;
|
|
if (const FullExpr *FE = dyn_cast<FullExpr>(E))
|
|
E = FE->getSubExpr();
|
|
|
|
if (const ObjCMessageExpr *
|
|
ME = dyn_cast<ObjCMessageExpr>(E->IgnoreParenCasts()))
|
|
if (ME->getMethodFamily() == OMF_retain)
|
|
return true;
|
|
|
|
if (const CallExpr *
|
|
callE = dyn_cast<CallExpr>(E->IgnoreParenCasts())) {
|
|
if (const FunctionDecl *FD = callE->getDirectCallee()) {
|
|
if (FD->hasAttr<CFReturnsRetainedAttr>())
|
|
return true;
|
|
|
|
if (FD->isGlobal() &&
|
|
FD->getIdentifier() &&
|
|
FD->getParent()->isTranslationUnit() &&
|
|
FD->isExternallyVisible() &&
|
|
ento::cocoa::isRefType(callE->getType(), "CF",
|
|
FD->getIdentifier()->getName())) {
|
|
StringRef fname = FD->getIdentifier()->getName();
|
|
if (fname.endswith("Retain") ||
|
|
fname.find("Create") != StringRef::npos ||
|
|
fname.find("Copy") != StringRef::npos) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const ImplicitCastExpr *implCE = dyn_cast<ImplicitCastExpr>(E);
|
|
while (implCE && implCE->getCastKind() == CK_BitCast)
|
|
implCE = dyn_cast<ImplicitCastExpr>(implCE->getSubExpr());
|
|
|
|
return implCE && implCE->getCastKind() == CK_ARCConsumeObject;
|
|
}
|
|
|
|
/// 'Loc' is the end of a statement range. This returns the location
|
|
/// immediately after the semicolon following the statement.
|
|
/// If no semicolon is found or the location is inside a macro, the returned
|
|
/// source location will be invalid.
|
|
SourceLocation trans::findLocationAfterSemi(SourceLocation loc,
|
|
ASTContext &Ctx, bool IsDecl) {
|
|
SourceLocation SemiLoc = findSemiAfterLocation(loc, Ctx, IsDecl);
|
|
if (SemiLoc.isInvalid())
|
|
return SourceLocation();
|
|
return SemiLoc.getLocWithOffset(1);
|
|
}
|
|
|
|
/// \arg Loc is the end of a statement range. This returns the location
|
|
/// of the semicolon following the statement.
|
|
/// If no semicolon is found or the location is inside a macro, the returned
|
|
/// source location will be invalid.
|
|
SourceLocation trans::findSemiAfterLocation(SourceLocation loc,
|
|
ASTContext &Ctx,
|
|
bool IsDecl) {
|
|
SourceManager &SM = Ctx.getSourceManager();
|
|
if (loc.isMacroID()) {
|
|
if (!Lexer::isAtEndOfMacroExpansion(loc, SM, Ctx.getLangOpts(), &loc))
|
|
return SourceLocation();
|
|
}
|
|
loc = Lexer::getLocForEndOfToken(loc, /*Offset=*/0, SM, Ctx.getLangOpts());
|
|
|
|
// Break down the source location.
|
|
std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(loc);
|
|
|
|
// Try to load the file buffer.
|
|
bool invalidTemp = false;
|
|
StringRef file = SM.getBufferData(locInfo.first, &invalidTemp);
|
|
if (invalidTemp)
|
|
return SourceLocation();
|
|
|
|
const char *tokenBegin = file.data() + locInfo.second;
|
|
|
|
// Lex from the start of the given location.
|
|
Lexer lexer(SM.getLocForStartOfFile(locInfo.first),
|
|
Ctx.getLangOpts(),
|
|
file.begin(), tokenBegin, file.end());
|
|
Token tok;
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.isNot(tok::semi)) {
|
|
if (!IsDecl)
|
|
return SourceLocation();
|
|
// Declaration may be followed with other tokens; such as an __attribute,
|
|
// before ending with a semicolon.
|
|
return findSemiAfterLocation(tok.getLocation(), Ctx, /*IsDecl*/true);
|
|
}
|
|
|
|
return tok.getLocation();
|
|
}
|
|
|
|
bool trans::hasSideEffects(Expr *E, ASTContext &Ctx) {
|
|
if (!E || !E->HasSideEffects(Ctx))
|
|
return false;
|
|
|
|
E = E->IgnoreParenCasts();
|
|
ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(E);
|
|
if (!ME)
|
|
return true;
|
|
switch (ME->getMethodFamily()) {
|
|
case OMF_autorelease:
|
|
case OMF_dealloc:
|
|
case OMF_release:
|
|
case OMF_retain:
|
|
switch (ME->getReceiverKind()) {
|
|
case ObjCMessageExpr::SuperInstance:
|
|
return false;
|
|
case ObjCMessageExpr::Instance:
|
|
return hasSideEffects(ME->getInstanceReceiver(), Ctx);
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool trans::isGlobalVar(Expr *E) {
|
|
E = E->IgnoreParenCasts();
|
|
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E))
|
|
return DRE->getDecl()->getDeclContext()->isFileContext() &&
|
|
DRE->getDecl()->isExternallyVisible();
|
|
if (ConditionalOperator *condOp = dyn_cast<ConditionalOperator>(E))
|
|
return isGlobalVar(condOp->getTrueExpr()) &&
|
|
isGlobalVar(condOp->getFalseExpr());
|
|
|
|
return false;
|
|
}
|
|
|
|
StringRef trans::getNilString(MigrationPass &Pass) {
|
|
return Pass.SemaRef.PP.isMacroDefined("nil") ? "nil" : "0";
|
|
}
|
|
|
|
namespace {
|
|
|
|
class ReferenceClear : public RecursiveASTVisitor<ReferenceClear> {
|
|
ExprSet &Refs;
|
|
public:
|
|
ReferenceClear(ExprSet &refs) : Refs(refs) { }
|
|
bool VisitDeclRefExpr(DeclRefExpr *E) { Refs.erase(E); return true; }
|
|
};
|
|
|
|
class ReferenceCollector : public RecursiveASTVisitor<ReferenceCollector> {
|
|
ValueDecl *Dcl;
|
|
ExprSet &Refs;
|
|
|
|
public:
|
|
ReferenceCollector(ValueDecl *D, ExprSet &refs)
|
|
: Dcl(D), Refs(refs) { }
|
|
|
|
bool VisitDeclRefExpr(DeclRefExpr *E) {
|
|
if (E->getDecl() == Dcl)
|
|
Refs.insert(E);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class RemovablesCollector : public RecursiveASTVisitor<RemovablesCollector> {
|
|
ExprSet &Removables;
|
|
|
|
public:
|
|
RemovablesCollector(ExprSet &removables)
|
|
: Removables(removables) { }
|
|
|
|
bool shouldWalkTypesOfTypeLocs() const { return false; }
|
|
|
|
bool TraverseStmtExpr(StmtExpr *E) {
|
|
CompoundStmt *S = E->getSubStmt();
|
|
for (CompoundStmt::body_iterator
|
|
I = S->body_begin(), E = S->body_end(); I != E; ++I) {
|
|
if (I != E - 1)
|
|
mark(*I);
|
|
TraverseStmt(*I);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool VisitCompoundStmt(CompoundStmt *S) {
|
|
for (auto *I : S->body())
|
|
mark(I);
|
|
return true;
|
|
}
|
|
|
|
bool VisitIfStmt(IfStmt *S) {
|
|
mark(S->getThen());
|
|
mark(S->getElse());
|
|
return true;
|
|
}
|
|
|
|
bool VisitWhileStmt(WhileStmt *S) {
|
|
mark(S->getBody());
|
|
return true;
|
|
}
|
|
|
|
bool VisitDoStmt(DoStmt *S) {
|
|
mark(S->getBody());
|
|
return true;
|
|
}
|
|
|
|
bool VisitForStmt(ForStmt *S) {
|
|
mark(S->getInit());
|
|
mark(S->getInc());
|
|
mark(S->getBody());
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
void mark(Stmt *S) {
|
|
if (!S) return;
|
|
|
|
while (auto *Label = dyn_cast<LabelStmt>(S))
|
|
S = Label->getSubStmt();
|
|
if (auto *E = dyn_cast<Expr>(S))
|
|
S = E->IgnoreImplicit();
|
|
if (auto *E = dyn_cast<Expr>(S))
|
|
Removables.insert(E);
|
|
}
|
|
};
|
|
|
|
} // end anonymous namespace
|
|
|
|
void trans::clearRefsIn(Stmt *S, ExprSet &refs) {
|
|
ReferenceClear(refs).TraverseStmt(S);
|
|
}
|
|
|
|
void trans::collectRefs(ValueDecl *D, Stmt *S, ExprSet &refs) {
|
|
ReferenceCollector(D, refs).TraverseStmt(S);
|
|
}
|
|
|
|
void trans::collectRemovables(Stmt *S, ExprSet &exprs) {
|
|
RemovablesCollector(exprs).TraverseStmt(S);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// MigrationContext
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
namespace {
|
|
|
|
class ASTTransform : public RecursiveASTVisitor<ASTTransform> {
|
|
MigrationContext &MigrateCtx;
|
|
typedef RecursiveASTVisitor<ASTTransform> base;
|
|
|
|
public:
|
|
ASTTransform(MigrationContext &MigrateCtx) : MigrateCtx(MigrateCtx) { }
|
|
|
|
bool shouldWalkTypesOfTypeLocs() const { return false; }
|
|
|
|
bool TraverseObjCImplementationDecl(ObjCImplementationDecl *D) {
|
|
ObjCImplementationContext ImplCtx(MigrateCtx, D);
|
|
for (MigrationContext::traverser_iterator
|
|
I = MigrateCtx.traversers_begin(),
|
|
E = MigrateCtx.traversers_end(); I != E; ++I)
|
|
(*I)->traverseObjCImplementation(ImplCtx);
|
|
|
|
return base::TraverseObjCImplementationDecl(D);
|
|
}
|
|
|
|
bool TraverseStmt(Stmt *rootS) {
|
|
if (!rootS)
|
|
return true;
|
|
|
|
BodyContext BodyCtx(MigrateCtx, rootS);
|
|
for (MigrationContext::traverser_iterator
|
|
I = MigrateCtx.traversers_begin(),
|
|
E = MigrateCtx.traversers_end(); I != E; ++I)
|
|
(*I)->traverseBody(BodyCtx);
|
|
|
|
return true;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
MigrationContext::~MigrationContext() {
|
|
for (traverser_iterator
|
|
I = traversers_begin(), E = traversers_end(); I != E; ++I)
|
|
delete *I;
|
|
}
|
|
|
|
bool MigrationContext::isGCOwnedNonObjC(QualType T) {
|
|
while (!T.isNull()) {
|
|
if (const AttributedType *AttrT = T->getAs<AttributedType>()) {
|
|
if (AttrT->getAttrKind() == attr::ObjCOwnership)
|
|
return !AttrT->getModifiedType()->isObjCRetainableType();
|
|
}
|
|
|
|
if (T->isArrayType())
|
|
T = Pass.Ctx.getBaseElementType(T);
|
|
else if (const PointerType *PT = T->getAs<PointerType>())
|
|
T = PT->getPointeeType();
|
|
else if (const ReferenceType *RT = T->getAs<ReferenceType>())
|
|
T = RT->getPointeeType();
|
|
else
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool MigrationContext::rewritePropertyAttribute(StringRef fromAttr,
|
|
StringRef toAttr,
|
|
SourceLocation atLoc) {
|
|
if (atLoc.isMacroID())
|
|
return false;
|
|
|
|
SourceManager &SM = Pass.Ctx.getSourceManager();
|
|
|
|
// Break down the source location.
|
|
std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(atLoc);
|
|
|
|
// Try to load the file buffer.
|
|
bool invalidTemp = false;
|
|
StringRef file = SM.getBufferData(locInfo.first, &invalidTemp);
|
|
if (invalidTemp)
|
|
return false;
|
|
|
|
const char *tokenBegin = file.data() + locInfo.second;
|
|
|
|
// Lex from the start of the given location.
|
|
Lexer lexer(SM.getLocForStartOfFile(locInfo.first),
|
|
Pass.Ctx.getLangOpts(),
|
|
file.begin(), tokenBegin, file.end());
|
|
Token tok;
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.isNot(tok::at)) return false;
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.isNot(tok::raw_identifier)) return false;
|
|
if (tok.getRawIdentifier() != "property")
|
|
return false;
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.isNot(tok::l_paren)) return false;
|
|
|
|
Token BeforeTok = tok;
|
|
Token AfterTok;
|
|
AfterTok.startToken();
|
|
SourceLocation AttrLoc;
|
|
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.is(tok::r_paren))
|
|
return false;
|
|
|
|
while (1) {
|
|
if (tok.isNot(tok::raw_identifier)) return false;
|
|
if (tok.getRawIdentifier() == fromAttr) {
|
|
if (!toAttr.empty()) {
|
|
Pass.TA.replaceText(tok.getLocation(), fromAttr, toAttr);
|
|
return true;
|
|
}
|
|
// We want to remove the attribute.
|
|
AttrLoc = tok.getLocation();
|
|
}
|
|
|
|
do {
|
|
lexer.LexFromRawLexer(tok);
|
|
if (AttrLoc.isValid() && AfterTok.is(tok::unknown))
|
|
AfterTok = tok;
|
|
} while (tok.isNot(tok::comma) && tok.isNot(tok::r_paren));
|
|
if (tok.is(tok::r_paren))
|
|
break;
|
|
if (AttrLoc.isInvalid())
|
|
BeforeTok = tok;
|
|
lexer.LexFromRawLexer(tok);
|
|
}
|
|
|
|
if (toAttr.empty() && AttrLoc.isValid() && AfterTok.isNot(tok::unknown)) {
|
|
// We want to remove the attribute.
|
|
if (BeforeTok.is(tok::l_paren) && AfterTok.is(tok::r_paren)) {
|
|
Pass.TA.remove(SourceRange(BeforeTok.getLocation(),
|
|
AfterTok.getLocation()));
|
|
} else if (BeforeTok.is(tok::l_paren) && AfterTok.is(tok::comma)) {
|
|
Pass.TA.remove(SourceRange(AttrLoc, AfterTok.getLocation()));
|
|
} else {
|
|
Pass.TA.remove(SourceRange(BeforeTok.getLocation(), AttrLoc));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool MigrationContext::addPropertyAttribute(StringRef attr,
|
|
SourceLocation atLoc) {
|
|
if (atLoc.isMacroID())
|
|
return false;
|
|
|
|
SourceManager &SM = Pass.Ctx.getSourceManager();
|
|
|
|
// Break down the source location.
|
|
std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(atLoc);
|
|
|
|
// Try to load the file buffer.
|
|
bool invalidTemp = false;
|
|
StringRef file = SM.getBufferData(locInfo.first, &invalidTemp);
|
|
if (invalidTemp)
|
|
return false;
|
|
|
|
const char *tokenBegin = file.data() + locInfo.second;
|
|
|
|
// Lex from the start of the given location.
|
|
Lexer lexer(SM.getLocForStartOfFile(locInfo.first),
|
|
Pass.Ctx.getLangOpts(),
|
|
file.begin(), tokenBegin, file.end());
|
|
Token tok;
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.isNot(tok::at)) return false;
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.isNot(tok::raw_identifier)) return false;
|
|
if (tok.getRawIdentifier() != "property")
|
|
return false;
|
|
lexer.LexFromRawLexer(tok);
|
|
|
|
if (tok.isNot(tok::l_paren)) {
|
|
Pass.TA.insert(tok.getLocation(), std::string("(") + attr.str() + ") ");
|
|
return true;
|
|
}
|
|
|
|
lexer.LexFromRawLexer(tok);
|
|
if (tok.is(tok::r_paren)) {
|
|
Pass.TA.insert(tok.getLocation(), attr);
|
|
return true;
|
|
}
|
|
|
|
if (tok.isNot(tok::raw_identifier)) return false;
|
|
|
|
Pass.TA.insert(tok.getLocation(), std::string(attr) + ", ");
|
|
return true;
|
|
}
|
|
|
|
void MigrationContext::traverse(TranslationUnitDecl *TU) {
|
|
for (traverser_iterator
|
|
I = traversers_begin(), E = traversers_end(); I != E; ++I)
|
|
(*I)->traverseTU(*this);
|
|
|
|
ASTTransform(*this).TraverseDecl(TU);
|
|
}
|
|
|
|
static void GCRewriteFinalize(MigrationPass &pass) {
|
|
ASTContext &Ctx = pass.Ctx;
|
|
TransformActions &TA = pass.TA;
|
|
DeclContext *DC = Ctx.getTranslationUnitDecl();
|
|
Selector FinalizeSel =
|
|
Ctx.Selectors.getNullarySelector(&pass.Ctx.Idents.get("finalize"));
|
|
|
|
typedef DeclContext::specific_decl_iterator<ObjCImplementationDecl>
|
|
impl_iterator;
|
|
for (impl_iterator I = impl_iterator(DC->decls_begin()),
|
|
E = impl_iterator(DC->decls_end()); I != E; ++I) {
|
|
for (const auto *MD : I->instance_methods()) {
|
|
if (!MD->hasBody())
|
|
continue;
|
|
|
|
if (MD->isInstanceMethod() && MD->getSelector() == FinalizeSel) {
|
|
const ObjCMethodDecl *FinalizeM = MD;
|
|
Transaction Trans(TA);
|
|
TA.insert(FinalizeM->getSourceRange().getBegin(),
|
|
"#if !__has_feature(objc_arc)\n");
|
|
CharSourceRange::getTokenRange(FinalizeM->getSourceRange());
|
|
const SourceManager &SM = pass.Ctx.getSourceManager();
|
|
const LangOptions &LangOpts = pass.Ctx.getLangOpts();
|
|
bool Invalid;
|
|
std::string str = "\n#endif\n";
|
|
str += Lexer::getSourceText(
|
|
CharSourceRange::getTokenRange(FinalizeM->getSourceRange()),
|
|
SM, LangOpts, &Invalid);
|
|
TA.insertAfterToken(FinalizeM->getSourceRange().getEnd(), str);
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// getAllTransformations.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static void traverseAST(MigrationPass &pass) {
|
|
MigrationContext MigrateCtx(pass);
|
|
|
|
if (pass.isGCMigration()) {
|
|
MigrateCtx.addTraverser(new GCCollectableCallsTraverser);
|
|
MigrateCtx.addTraverser(new GCAttrsTraverser());
|
|
}
|
|
MigrateCtx.addTraverser(new PropertyRewriteTraverser());
|
|
MigrateCtx.addTraverser(new BlockObjCVariableTraverser());
|
|
MigrateCtx.addTraverser(new ProtectedScopeTraverser());
|
|
|
|
MigrateCtx.traverse(pass.Ctx.getTranslationUnitDecl());
|
|
}
|
|
|
|
static void independentTransforms(MigrationPass &pass) {
|
|
rewriteAutoreleasePool(pass);
|
|
removeRetainReleaseDeallocFinalize(pass);
|
|
rewriteUnusedInitDelegate(pass);
|
|
removeZeroOutPropsInDeallocFinalize(pass);
|
|
makeAssignARCSafe(pass);
|
|
rewriteUnbridgedCasts(pass);
|
|
checkAPIUses(pass);
|
|
traverseAST(pass);
|
|
}
|
|
|
|
std::vector<TransformFn> arcmt::getAllTransformations(
|
|
LangOptions::GCMode OrigGCMode,
|
|
bool NoFinalizeRemoval) {
|
|
std::vector<TransformFn> transforms;
|
|
|
|
if (OrigGCMode == LangOptions::GCOnly && NoFinalizeRemoval)
|
|
transforms.push_back(GCRewriteFinalize);
|
|
transforms.push_back(independentTransforms);
|
|
// This depends on previous transformations removing various expressions.
|
|
transforms.push_back(removeEmptyStatementsAndDeallocFinalize);
|
|
|
|
return transforms;
|
|
}
|