r302965 - [modules] When creating a declaration, cache its owning module immediately
Richard Smith via cfe-commits
cfe-commits at lists.llvm.org
Fri May 12 16:27:01 PDT 2017
Author: rsmith
Date: Fri May 12 18:27:00 2017
New Revision: 302965
URL: http://llvm.org/viewvc/llvm-project?rev=302965&view=rev
Log:
[modules] When creating a declaration, cache its owning module immediately
rather than waiting until it's queried.
Currently this is only applied to local submodule visibility mode, as we don't
yet allocate storage for the owning module in non-local-visibility modules
compilations.
Modified:
cfe/trunk/include/clang/AST/Decl.h
cfe/trunk/include/clang/AST/DeclBase.h
cfe/trunk/include/clang/Sema/Sema.h
cfe/trunk/lib/AST/ASTDumper.cpp
cfe/trunk/lib/AST/Decl.cpp
cfe/trunk/lib/AST/DeclBase.cpp
cfe/trunk/lib/Sema/Sema.cpp
cfe/trunk/lib/Sema/SemaDecl.cpp
cfe/trunk/lib/Sema/SemaLookup.cpp
Modified: cfe/trunk/include/clang/AST/Decl.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Decl.h?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/Decl.h (original)
+++ cfe/trunk/include/clang/AST/Decl.h Fri May 12 18:27:00 2017
@@ -301,16 +301,6 @@ public:
using Decl::isModulePrivate;
using Decl::setModulePrivate;
- /// \brief Determine whether this declaration is hidden from name lookup.
- bool isHidden() const { return Hidden; }
-
- /// \brief Set whether this declaration is hidden from name lookup.
- void setHidden(bool Hide) {
- assert((!Hide || isFromASTFile() || hasLocalOwningModuleStorage()) &&
- "declaration with no owning module can't be hidden");
- Hidden = Hide;
- }
-
/// \brief Determine whether this declaration is a C++ class member.
bool isCXXClassMember() const {
const DeclContext *DC = getDeclContext();
Modified: cfe/trunk/include/clang/AST/DeclBase.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DeclBase.h?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/DeclBase.h (original)
+++ cfe/trunk/include/clang/AST/DeclBase.h Fri May 12 18:27:00 2017
@@ -706,6 +706,20 @@ public:
reinterpret_cast<Module **>(this)[-1] = M;
}
+ Module *getOwningModule() const {
+ return isFromASTFile() ? getImportedOwningModule() : getLocalOwningModule();
+ }
+
+ /// \brief Determine whether this declaration is hidden from name lookup.
+ bool isHidden() const { return Hidden; }
+
+ /// \brief Set whether this declaration is hidden from name lookup.
+ void setHidden(bool Hide) {
+ assert((!Hide || isFromASTFile() || hasLocalOwningModuleStorage()) &&
+ "declaration with no owning module can't be hidden");
+ Hidden = Hide;
+ }
+
unsigned getIdentifierNamespace() const {
return IdentifierNamespace;
}
Modified: cfe/trunk/include/clang/Sema/Sema.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Sema.h?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/include/clang/Sema/Sema.h (original)
+++ cfe/trunk/include/clang/Sema/Sema.h Fri May 12 18:27:00 2017
@@ -1463,11 +1463,9 @@ private:
VisibleModuleSet VisibleModules;
- Module *CachedFakeTopLevelModule;
-
public:
/// \brief Get the module owning an entity.
- Module *getOwningModule(Decl *Entity);
+ Module *getOwningModule(Decl *Entity) { return Entity->getOwningModule(); }
/// \brief Make a merged definition of an existing hidden definition \p ND
/// visible at the specified location.
Modified: cfe/trunk/lib/AST/ASTDumper.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ASTDumper.cpp?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/lib/AST/ASTDumper.cpp (original)
+++ cfe/trunk/lib/AST/ASTDumper.cpp Fri May 12 18:27:00 2017
@@ -1038,10 +1038,10 @@ void ASTDumper::dumpDecl(const Decl *D)
dumpSourceRange(D->getSourceRange());
OS << ' ';
dumpLocation(D->getLocation());
- if (Module *M = D->getImportedOwningModule())
+ if (D->isFromASTFile())
+ OS << " imported";
+ if (Module *M = D->getOwningModule())
OS << " in " << M->getFullModuleName();
- else if (Module *M = D->getLocalOwningModule())
- OS << " in (local) " << M->getFullModuleName();
if (auto *ND = dyn_cast<NamedDecl>(D))
for (Module *M : D->getASTContext().getModulesWithMergedDefinition(
const_cast<NamedDecl *>(ND)))
Modified: cfe/trunk/lib/AST/Decl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/Decl.cpp?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/lib/AST/Decl.cpp (original)
+++ cfe/trunk/lib/AST/Decl.cpp Fri May 12 18:27:00 2017
@@ -47,9 +47,7 @@ bool Decl::isOutOfLine() const {
TranslationUnitDecl::TranslationUnitDecl(ASTContext &ctx)
: Decl(TranslationUnit, nullptr, SourceLocation()),
- DeclContext(TranslationUnit), Ctx(ctx), AnonymousNamespace(nullptr) {
- Hidden = Ctx.getLangOpts().ModulesLocalVisibility;
-}
+ DeclContext(TranslationUnit), Ctx(ctx), AnonymousNamespace(nullptr) {}
//===----------------------------------------------------------------------===//
// NamedDecl Implementation
Modified: cfe/trunk/lib/AST/DeclBase.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/DeclBase.cpp?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/lib/AST/DeclBase.cpp (original)
+++ cfe/trunk/lib/AST/DeclBase.cpp Fri May 12 18:27:00 2017
@@ -83,7 +83,9 @@ void *Decl::operator new(std::size_t Siz
char *Buffer = reinterpret_cast<char *>(
::operator new(ExtraAlign + sizeof(Module *) + Size + Extra, Ctx));
Buffer += ExtraAlign;
- return new (Buffer) Module*(nullptr) + 1;
+ auto *ParentModule =
+ Parent ? cast<Decl>(Parent)->getOwningModule() : nullptr;
+ return new (Buffer) Module*(ParentModule) + 1;
}
return ::operator new(Size + Extra, Ctx);
}
@@ -273,6 +275,11 @@ void Decl::setLexicalDeclContext(DeclCon
getMultipleDC()->LexicalDC = DC;
}
Hidden = cast<Decl>(DC)->Hidden;
+ if (Hidden && !isFromASTFile()) {
+ assert(hasLocalOwningModuleStorage() &&
+ "hidden local declaration without local submodule visibility?");
+ setLocalOwningModule(cast<Decl>(DC)->getOwningModule());
+ }
}
void Decl::setDeclContextsImpl(DeclContext *SemaDC, DeclContext *LexicalDC,
Modified: cfe/trunk/lib/Sema/Sema.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/Sema.cpp?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/Sema.cpp (original)
+++ cfe/trunk/lib/Sema/Sema.cpp Fri May 12 18:27:00 2017
@@ -93,11 +93,10 @@ Sema::Sema(Preprocessor &pp, ASTContext
ValueWithBytesObjCTypeMethod(nullptr), NSArrayDecl(nullptr),
ArrayWithObjectsMethod(nullptr), NSDictionaryDecl(nullptr),
DictionaryWithObjectsMethod(nullptr), GlobalNewDeleteDeclared(false),
- TUKind(TUKind), NumSFINAEErrors(0), CachedFakeTopLevelModule(nullptr),
- AccessCheckingSFINAE(false), InNonInstantiationSFINAEContext(false),
- NonInstantiationEntries(0), ArgumentPackSubstitutionIndex(-1),
- CurrentInstantiationScope(nullptr), DisableTypoCorrection(false),
- TyposCorrected(0), AnalysisWarnings(*this),
+ TUKind(TUKind), NumSFINAEErrors(0), AccessCheckingSFINAE(false),
+ InNonInstantiationSFINAEContext(false), NonInstantiationEntries(0),
+ ArgumentPackSubstitutionIndex(-1), CurrentInstantiationScope(nullptr),
+ DisableTypoCorrection(false), TyposCorrected(0), AnalysisWarnings(*this),
ThreadSafetyDeclCache(nullptr), VarDataSharingAttributesStack(nullptr),
CurScope(nullptr), Ident_super(nullptr), Ident___float128(nullptr) {
TUScope = nullptr;
Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDecl.cpp Fri May 12 18:27:00 2017
@@ -16034,6 +16034,14 @@ void Sema::ActOnModuleBegin(SourceLocati
ModuleScopes.back().OuterVisibleModules = std::move(VisibleModules);
VisibleModules.setVisible(Mod, DirectiveLoc);
+
+ // The enclosing context is now part of this module.
+ // FIXME: Consider creating a child DeclContext to hold the entities
+ // lexically within the module.
+ if (getLangOpts().ModulesLocalVisibility) {
+ cast<Decl>(CurContext)->setHidden(true);
+ cast<Decl>(CurContext)->setLocalOwningModule(Mod);
+ }
}
void Sema::ActOnModuleEnd(SourceLocation EomLoc, Module *Mod) {
@@ -16062,6 +16070,13 @@ void Sema::ActOnModuleEnd(SourceLocation
DirectiveLoc = EomLoc;
}
BuildModuleInclude(DirectiveLoc, Mod);
+
+ // Any further declarations are in whatever module we returned to.
+ if (getLangOpts().ModulesLocalVisibility) {
+ cast<Decl>(CurContext)->setLocalOwningModule(getCurrentModule());
+ if (!getCurrentModule())
+ cast<Decl>(CurContext)->setHidden(false);
+ }
}
void Sema::createImplicitModuleImportForErrorRecovery(SourceLocation Loc,
Modified: cfe/trunk/lib/Sema/SemaLookup.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaLookup.cpp?rev=302965&r1=302964&r2=302965&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaLookup.cpp (original)
+++ cfe/trunk/lib/Sema/SemaLookup.cpp Fri May 12 18:27:00 2017
@@ -1326,62 +1326,6 @@ bool Sema::CppLookupName(LookupResult &R
return !R.empty();
}
-Module *Sema::getOwningModule(Decl *Entity) {
- // If it's imported, grab its owning module.
- Module *M = Entity->getImportedOwningModule();
- if (M || !isa<NamedDecl>(Entity) || !cast<NamedDecl>(Entity)->isHidden())
- return M;
- assert(!Entity->isFromASTFile() &&
- "hidden entity from AST file has no owning module");
-
- if (!getLangOpts().ModulesLocalVisibility) {
- // If we're not tracking visibility locally, the only way a declaration
- // can be hidden and local is if it's hidden because it's parent is (for
- // instance, maybe this is a lazily-declared special member of an imported
- // class).
- auto *Parent = cast<NamedDecl>(Entity->getDeclContext());
- assert(Parent->isHidden() && "unexpectedly hidden decl");
- return getOwningModule(Parent);
- }
-
- // It's local and hidden; grab or compute its owning module.
- M = Entity->getLocalOwningModule();
- if (M)
- return M;
-
- if (auto *Containing =
- PP.getModuleContainingLocation(Entity->getLocation())) {
- M = Containing;
- } else if (Entity->isInvalidDecl() || Entity->getLocation().isInvalid()) {
- // Don't bother tracking visibility for invalid declarations with broken
- // locations.
- cast<NamedDecl>(Entity)->setHidden(false);
- } else {
- // We need to assign a module to an entity that exists outside of any
- // module, so that we can hide it from modules that we textually enter.
- // Invent a fake module for all such entities.
- if (!CachedFakeTopLevelModule) {
- CachedFakeTopLevelModule =
- PP.getHeaderSearchInfo().getModuleMap().findOrCreateModule(
- "<top-level>", nullptr, false, false).first;
-
- auto &SrcMgr = PP.getSourceManager();
- SourceLocation StartLoc =
- SrcMgr.getLocForStartOfFile(SrcMgr.getMainFileID());
- auto &TopLevel = ModuleScopes.empty()
- ? VisibleModules
- : ModuleScopes[0].OuterVisibleModules;
- TopLevel.setVisible(CachedFakeTopLevelModule, StartLoc);
- }
-
- M = CachedFakeTopLevelModule;
- }
-
- if (M)
- Entity->setLocalOwningModule(M);
- return M;
-}
-
void Sema::makeMergedDefinitionVisible(NamedDecl *ND) {
if (auto *M = getCurrentModule())
Context.mergeDefinitionIntoModule(ND, M);
@@ -1520,7 +1464,6 @@ bool LookupResult::isVisibleSlow(Sema &S
if (SemaRef.getLangOpts().ModulesLocalVisibility) {
DeclModule = SemaRef.getOwningModule(D);
if (!DeclModule) {
- // getOwningModule() may have decided the declaration should not be hidden.
assert(!D->isHidden() && "hidden decl not from a module");
return true;
}
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