08c5a7b8fd
With MSVC, PCH files are created along with an object file that needs to
be linked into the final library or executable. That object file
contains the code generated when building the headers. In particular, it
will include definitions of inline dllexport functions, and because they
are emitted in this object file, other files using the PCH do not need
to emit them. See the bug for an example.
This patch makes clang-cl match MSVC's behaviour in this regard, causing
significant compile-time savings when building dlls using precompiled
headers.
For example, in a 64-bit optimized shared library build of Chromium with
PCH, it reduces the binary size and compile time of
stroke_opacity_custom.obj from 9315564 bytes to 3659629 bytes and 14.6
to 6.63 s. The wall-clock time of building blink_core.dll goes from
38m41s to 22m33s. ("user" time goes from 1979m to 1142m).
Differential Revision: https://reviews.llvm.org/D48426
llvm-svn: 335466
339 lines
12 KiB
C++
339 lines
12 KiB
C++
//===--- MultiplexExternalSemaSource.cpp ---------------------------------===//
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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 event dispatching to the subscribed clients.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/MultiplexExternalSemaSource.h"
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#include "clang/AST/DeclContextInternals.h"
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#include "clang/Sema/Lookup.h"
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using namespace clang;
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///Constructs a new multiplexing external sema source and appends the
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/// given element to it.
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///
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MultiplexExternalSemaSource::MultiplexExternalSemaSource(ExternalSemaSource &s1,
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ExternalSemaSource &s2){
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Sources.push_back(&s1);
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Sources.push_back(&s2);
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}
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// pin the vtable here.
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MultiplexExternalSemaSource::~MultiplexExternalSemaSource() {}
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///Appends new source to the source list.
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///
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///\param[in] source - An ExternalSemaSource.
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///
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void MultiplexExternalSemaSource::addSource(ExternalSemaSource &source) {
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Sources.push_back(&source);
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}
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//===----------------------------------------------------------------------===//
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// ExternalASTSource.
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//===----------------------------------------------------------------------===//
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Decl *MultiplexExternalSemaSource::GetExternalDecl(uint32_t ID) {
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for(size_t i = 0; i < Sources.size(); ++i)
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if (Decl *Result = Sources[i]->GetExternalDecl(ID))
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return Result;
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return nullptr;
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}
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void MultiplexExternalSemaSource::CompleteRedeclChain(const Decl *D) {
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for (size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->CompleteRedeclChain(D);
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}
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Selector MultiplexExternalSemaSource::GetExternalSelector(uint32_t ID) {
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Selector Sel;
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for(size_t i = 0; i < Sources.size(); ++i) {
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Sel = Sources[i]->GetExternalSelector(ID);
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if (!Sel.isNull())
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return Sel;
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}
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return Sel;
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}
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uint32_t MultiplexExternalSemaSource::GetNumExternalSelectors() {
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uint32_t total = 0;
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for(size_t i = 0; i < Sources.size(); ++i)
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total += Sources[i]->GetNumExternalSelectors();
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return total;
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}
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Stmt *MultiplexExternalSemaSource::GetExternalDeclStmt(uint64_t Offset) {
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for(size_t i = 0; i < Sources.size(); ++i)
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if (Stmt *Result = Sources[i]->GetExternalDeclStmt(Offset))
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return Result;
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return nullptr;
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}
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CXXBaseSpecifier *MultiplexExternalSemaSource::GetExternalCXXBaseSpecifiers(
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uint64_t Offset){
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for(size_t i = 0; i < Sources.size(); ++i)
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if (CXXBaseSpecifier *R = Sources[i]->GetExternalCXXBaseSpecifiers(Offset))
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return R;
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return nullptr;
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}
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CXXCtorInitializer **
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MultiplexExternalSemaSource::GetExternalCXXCtorInitializers(uint64_t Offset) {
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for (auto *S : Sources)
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if (auto *R = S->GetExternalCXXCtorInitializers(Offset))
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return R;
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return nullptr;
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}
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ExternalASTSource::ExtKind
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MultiplexExternalSemaSource::hasExternalDefinitions(const Decl *D) {
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for (const auto &S : Sources)
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if (auto EK = S->hasExternalDefinitions(D))
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if (EK != EK_ReplyHazy)
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return EK;
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return EK_ReplyHazy;
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}
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bool MultiplexExternalSemaSource::
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FindExternalVisibleDeclsByName(const DeclContext *DC, DeclarationName Name) {
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bool AnyDeclsFound = false;
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for (size_t i = 0; i < Sources.size(); ++i)
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AnyDeclsFound |= Sources[i]->FindExternalVisibleDeclsByName(DC, Name);
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return AnyDeclsFound;
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}
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void MultiplexExternalSemaSource::completeVisibleDeclsMap(const DeclContext *DC){
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->completeVisibleDeclsMap(DC);
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}
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void MultiplexExternalSemaSource::FindExternalLexicalDecls(
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const DeclContext *DC, llvm::function_ref<bool(Decl::Kind)> IsKindWeWant,
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SmallVectorImpl<Decl *> &Result) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->FindExternalLexicalDecls(DC, IsKindWeWant, Result);
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}
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void MultiplexExternalSemaSource::FindFileRegionDecls(FileID File,
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unsigned Offset,
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unsigned Length,
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SmallVectorImpl<Decl *> &Decls){
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->FindFileRegionDecls(File, Offset, Length, Decls);
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}
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void MultiplexExternalSemaSource::CompleteType(TagDecl *Tag) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->CompleteType(Tag);
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}
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void MultiplexExternalSemaSource::CompleteType(ObjCInterfaceDecl *Class) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->CompleteType(Class);
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}
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void MultiplexExternalSemaSource::ReadComments() {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadComments();
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}
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void MultiplexExternalSemaSource::StartedDeserializing() {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->StartedDeserializing();
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}
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void MultiplexExternalSemaSource::FinishedDeserializing() {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->FinishedDeserializing();
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}
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void MultiplexExternalSemaSource::StartTranslationUnit(ASTConsumer *Consumer) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->StartTranslationUnit(Consumer);
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}
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void MultiplexExternalSemaSource::PrintStats() {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->PrintStats();
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}
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Module *MultiplexExternalSemaSource::getModule(unsigned ID) {
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for (size_t i = 0; i < Sources.size(); ++i)
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if (auto M = Sources[i]->getModule(ID))
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return M;
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return nullptr;
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}
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bool MultiplexExternalSemaSource::DeclIsFromPCHWithObjectFile(const Decl *D) {
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for (auto *S : Sources)
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if (S->DeclIsFromPCHWithObjectFile(D))
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return true;
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return false;
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}
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bool MultiplexExternalSemaSource::layoutRecordType(const RecordDecl *Record,
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uint64_t &Size,
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uint64_t &Alignment,
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llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
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llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
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llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets){
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for(size_t i = 0; i < Sources.size(); ++i)
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if (Sources[i]->layoutRecordType(Record, Size, Alignment, FieldOffsets,
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BaseOffsets, VirtualBaseOffsets))
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return true;
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return false;
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}
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void MultiplexExternalSemaSource::
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getMemoryBufferSizes(MemoryBufferSizes &sizes) const {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->getMemoryBufferSizes(sizes);
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}
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//===----------------------------------------------------------------------===//
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// ExternalSemaSource.
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//===----------------------------------------------------------------------===//
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void MultiplexExternalSemaSource::InitializeSema(Sema &S) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->InitializeSema(S);
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}
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void MultiplexExternalSemaSource::ForgetSema() {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ForgetSema();
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}
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void MultiplexExternalSemaSource::ReadMethodPool(Selector Sel) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadMethodPool(Sel);
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}
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void MultiplexExternalSemaSource::updateOutOfDateSelector(Selector Sel) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->updateOutOfDateSelector(Sel);
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}
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void MultiplexExternalSemaSource::ReadKnownNamespaces(
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SmallVectorImpl<NamespaceDecl*> &Namespaces){
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadKnownNamespaces(Namespaces);
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}
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void MultiplexExternalSemaSource::ReadUndefinedButUsed(
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llvm::MapVector<NamedDecl *, SourceLocation> &Undefined) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadUndefinedButUsed(Undefined);
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}
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void MultiplexExternalSemaSource::ReadMismatchingDeleteExpressions(
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llvm::MapVector<FieldDecl *,
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llvm::SmallVector<std::pair<SourceLocation, bool>, 4>> &
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Exprs) {
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for (auto &Source : Sources)
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Source->ReadMismatchingDeleteExpressions(Exprs);
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}
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bool MultiplexExternalSemaSource::LookupUnqualified(LookupResult &R, Scope *S){
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->LookupUnqualified(R, S);
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return !R.empty();
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}
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void MultiplexExternalSemaSource::ReadTentativeDefinitions(
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SmallVectorImpl<VarDecl*> &TentativeDefs) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadTentativeDefinitions(TentativeDefs);
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}
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void MultiplexExternalSemaSource::ReadUnusedFileScopedDecls(
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SmallVectorImpl<const DeclaratorDecl*> &Decls) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadUnusedFileScopedDecls(Decls);
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}
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void MultiplexExternalSemaSource::ReadDelegatingConstructors(
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SmallVectorImpl<CXXConstructorDecl*> &Decls) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadDelegatingConstructors(Decls);
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}
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void MultiplexExternalSemaSource::ReadExtVectorDecls(
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SmallVectorImpl<TypedefNameDecl*> &Decls) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadExtVectorDecls(Decls);
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}
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void MultiplexExternalSemaSource::ReadUnusedLocalTypedefNameCandidates(
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llvm::SmallSetVector<const TypedefNameDecl *, 4> &Decls) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadUnusedLocalTypedefNameCandidates(Decls);
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}
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void MultiplexExternalSemaSource::ReadReferencedSelectors(
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SmallVectorImpl<std::pair<Selector, SourceLocation> > &Sels) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadReferencedSelectors(Sels);
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}
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void MultiplexExternalSemaSource::ReadWeakUndeclaredIdentifiers(
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SmallVectorImpl<std::pair<IdentifierInfo*, WeakInfo> > &WI) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadWeakUndeclaredIdentifiers(WI);
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}
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void MultiplexExternalSemaSource::ReadUsedVTables(
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SmallVectorImpl<ExternalVTableUse> &VTables) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadUsedVTables(VTables);
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}
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void MultiplexExternalSemaSource::ReadPendingInstantiations(
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SmallVectorImpl<std::pair<ValueDecl*,
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SourceLocation> > &Pending) {
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for(size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadPendingInstantiations(Pending);
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}
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void MultiplexExternalSemaSource::ReadLateParsedTemplates(
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llvm::MapVector<const FunctionDecl *, std::unique_ptr<LateParsedTemplate>>
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&LPTMap) {
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for (size_t i = 0; i < Sources.size(); ++i)
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Sources[i]->ReadLateParsedTemplates(LPTMap);
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}
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TypoCorrection MultiplexExternalSemaSource::CorrectTypo(
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const DeclarationNameInfo &Typo,
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int LookupKind, Scope *S, CXXScopeSpec *SS,
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CorrectionCandidateCallback &CCC,
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DeclContext *MemberContext,
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bool EnteringContext,
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const ObjCObjectPointerType *OPT) {
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for (size_t I = 0, E = Sources.size(); I < E; ++I) {
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if (TypoCorrection C = Sources[I]->CorrectTypo(Typo, LookupKind, S, SS, CCC,
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MemberContext,
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EnteringContext, OPT))
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return C;
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}
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return TypoCorrection();
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}
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bool MultiplexExternalSemaSource::MaybeDiagnoseMissingCompleteType(
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SourceLocation Loc, QualType T) {
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for (size_t I = 0, E = Sources.size(); I < E; ++I) {
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if (Sources[I]->MaybeDiagnoseMissingCompleteType(Loc, T))
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return true;
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}
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return false;
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}
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