jansvoboda11 updated this revision to Diff 378945.
jansvoboda11 added a comment.
Implemented alternative approach: attach the caching listener to PCH reading as
well.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D111560/new/
https://reviews.llvm.org/D111560
Files:
clang/lib/Frontend/CompilerInstance.cpp
clang/lib/Tooling/DependencyScanning/DependencyScanningTool.cpp
clang/test/ClangScanDeps/modules-pch.c
clang/test/Modules/Inputs/pch-shared-module/mod.h
clang/test/Modules/Inputs/pch-shared-module/module.modulemap
clang/test/Modules/Inputs/pch-shared-module/pch.h
clang/test/Modules/pch-shared-module.c
Index: clang/test/Modules/pch-shared-module.c
===================================================================
--- /dev/null
+++ clang/test/Modules/pch-shared-module.c
@@ -0,0 +1,14 @@
+// rm -rf %t && mkdir %t
+
+// RUN: %clang_cc1 -fmodules -emit-module -fmodule-name=mod %S/Inputs/pch-shared-module/module.modulemap -o %t/mod.pcm
+
+// RUN: %clang_cc1 -fmodules -emit-pch %S/Inputs/pch-shared-module/pch.h -o %t/pch.h.gch \
+// RUN: -fmodule-file=%t/mod.pcm -fmodule-map-file=%S/Inputs/pch-shared-module/module.modulemap
+
+// Check that `mod.pcm` is loaded correctly, even though it's imported by the PCH as well.
+// RUN: %clang_cc1 -fmodules -fsyntax-only %s -include-pch %t/pch.h.gch -I %S/Inputs/pch-shared-module \
+// RUN: -fmodule-file=%t/mod.pcm -fmodule-map-file=%S/Inputs/pch-shared-module/module.modulemap -verify
+
+#include "mod.h"
+
+// expected-no-diagnostics
Index: clang/test/Modules/Inputs/pch-shared-module/pch.h
===================================================================
--- /dev/null
+++ clang/test/Modules/Inputs/pch-shared-module/pch.h
@@ -0,0 +1 @@
+#include "mod.h"
Index: clang/test/Modules/Inputs/pch-shared-module/module.modulemap
===================================================================
--- /dev/null
+++ clang/test/Modules/Inputs/pch-shared-module/module.modulemap
@@ -0,0 +1 @@
+module mod { header "mod.h" }
Index: clang/test/ClangScanDeps/modules-pch.c
===================================================================
--- clang/test/ClangScanDeps/modules-pch.c
+++ clang/test/ClangScanDeps/modules-pch.c
@@ -229,8 +229,7 @@
// CHECK-TU-WITH-COMMON-NEXT: "command-line": [
// CHECK-TU-WITH-COMMON-NEXT: "-fno-implicit-modules",
// CHECK-TU-WITH-COMMON-NEXT: "-fno-implicit-module-maps",
-// FIXME: Figure out why we need `=ModCommon2` here for Clang to pick up the PCM.
-// CHECK-TU-WITH-COMMON-NEXT: "-fmodule-file=ModCommon2=[[PREFIX]]/build/{{.*}}/ModCommon2-{{.*}}.pcm",
+// CHECK-TU-WITH-COMMON-NEXT: "-fmodule-file=[[PREFIX]]/build/{{.*}}/ModCommon2-{{.*}}.pcm",
// CHECK-TU-WITH-COMMON-NEXT: "-fmodule-map-file=[[PREFIX]]/module.modulemap"
// CHECK-TU-WITH-COMMON-NEXT: "-fmodule-file=[[PREFIX]]/build/[[HASH_MOD_TU_WITH_COMMON]]/ModTUWithCommon-{{.*}}.pcm",
// CHECK-TU-WITH-COMMON-NEXT: "-fmodule-map-file=[[PREFIX]]/module.modulemap"
Index: clang/lib/Tooling/DependencyScanning/DependencyScanningTool.cpp
===================================================================
--- clang/lib/Tooling/DependencyScanning/DependencyScanningTool.cpp
+++ clang/lib/Tooling/DependencyScanning/DependencyScanningTool.cpp
@@ -38,7 +38,7 @@
};
for (const PrebuiltModuleDep &PMD : PrebuiltModuleDeps) {
- Args.push_back("-fmodule-file=" + PMD.ModuleName + "=" + PMD.PCMFile);
+ Args.push_back("-fmodule-file=" + PMD.PCMFile);
Args.push_back("-fmodule-map-file=" + PMD.ModuleMapFile);
}
Index: clang/lib/Frontend/CompilerInstance.cpp
===================================================================
--- clang/lib/Frontend/CompilerInstance.cpp
+++ clang/lib/Frontend/CompilerInstance.cpp
@@ -441,6 +441,52 @@
InitOpts.RemappedFilesKeepOriginalName);
}
+namespace {
+// Helper to recursively read the module names for all modules we're adding.
+// We mark these as known and redirect any attempt to load that module to
+// the files we were handed.
+struct ReadModuleNames : ASTReaderListener {
+ Preprocessor &PP;
+ llvm::SmallVector<IdentifierInfo *, 8> LoadedModules;
+
+ ReadModuleNames(Preprocessor &PP) : PP(PP) {}
+
+ void ReadModuleName(StringRef ModuleName) override {
+ LoadedModules.push_back(PP.getIdentifierInfo(ModuleName));
+ }
+
+ void registerAll() {
+ ModuleMap &MM = PP.getHeaderSearchInfo().getModuleMap();
+ for (auto *II : LoadedModules)
+ MM.cacheModuleLoad(*II, MM.findModule(II->getName()));
+ LoadedModules.clear();
+ }
+
+ void markAllUnavailable() {
+ for (auto *II : LoadedModules) {
+ if (Module *M = PP.getHeaderSearchInfo().getModuleMap().findModule(
+ II->getName())) {
+ M->HasIncompatibleModuleFile = true;
+
+ // Mark module as available if the only reason it was unavailable
+ // was missing headers.
+ SmallVector<Module *, 2> Stack;
+ Stack.push_back(M);
+ while (!Stack.empty()) {
+ Module *Current = Stack.pop_back_val();
+ if (Current->IsUnimportable)
+ continue;
+ Current->IsAvailable = true;
+ Stack.insert(Stack.end(), Current->submodule_begin(),
+ Current->submodule_end());
+ }
+ }
+ }
+ LoadedModules.clear();
+ }
+};
+} // namespace
+
// Preprocessor
void CompilerInstance::createPreprocessor(TranslationUnitKind TUKind) {
@@ -603,6 +649,11 @@
for (auto &Listener : DependencyCollectors)
Listener->attachToASTReader(*Reader);
+ auto Listener = std::make_unique<ReadModuleNames>(PP);
+ auto &ListenerRef = *Listener;
+ ASTReader::ListenerScope ReadModuleNamesListener(*Reader,
+ std::move(Listener));
+
switch (Reader->ReadAST(Path,
Preamble ? serialization::MK_Preamble
: serialization::MK_PCH,
@@ -612,6 +663,7 @@
// Set the predefines buffer as suggested by the PCH reader. Typically, the
// predefines buffer will be empty.
PP.setPredefines(Reader->getSuggestedPredefines());
+ ListenerRef.registerAll();
return Reader;
case ASTReader::Failure:
@@ -627,6 +679,7 @@
break;
}
+ ListenerRef.markAllUnavailable();
Context.setExternalSource(nullptr);
return nullptr;
}
@@ -1634,52 +1687,6 @@
*FrontendTimerGroup);
llvm::TimeRegion TimeLoading(FrontendTimerGroup ? &Timer : nullptr);
- // Helper to recursively read the module names for all modules we're adding.
- // We mark these as known and redirect any attempt to load that module to
- // the files we were handed.
- struct ReadModuleNames : ASTReaderListener {
- CompilerInstance &CI;
- llvm::SmallVector<IdentifierInfo*, 8> LoadedModules;
-
- ReadModuleNames(CompilerInstance &CI) : CI(CI) {}
-
- void ReadModuleName(StringRef ModuleName) override {
- LoadedModules.push_back(
- CI.getPreprocessor().getIdentifierInfo(ModuleName));
- }
-
- void registerAll() {
- ModuleMap &MM = CI.getPreprocessor().getHeaderSearchInfo().getModuleMap();
- for (auto *II : LoadedModules)
- MM.cacheModuleLoad(*II, MM.findModule(II->getName()));
- LoadedModules.clear();
- }
-
- void markAllUnavailable() {
- for (auto *II : LoadedModules) {
- if (Module *M = CI.getPreprocessor()
- .getHeaderSearchInfo()
- .getModuleMap()
- .findModule(II->getName())) {
- M->HasIncompatibleModuleFile = true;
-
- // Mark module as available if the only reason it was unavailable
- // was missing headers.
- SmallVector<Module *, 2> Stack;
- Stack.push_back(M);
- while (!Stack.empty()) {
- Module *Current = Stack.pop_back_val();
- if (Current->IsUnimportable) continue;
- Current->IsAvailable = true;
- Stack.insert(Stack.end(),
- Current->submodule_begin(), Current->submodule_end());
- }
- }
- }
- LoadedModules.clear();
- }
- };
-
// If we don't already have an ASTReader, create one now.
if (!TheASTReader)
createASTReader();
@@ -1691,7 +1698,7 @@
SourceLocation())
<= DiagnosticsEngine::Warning;
- auto Listener = std::make_unique<ReadModuleNames>(*this);
+ auto Listener = std::make_unique<ReadModuleNames>(*PP);
auto &ListenerRef = *Listener;
ASTReader::ListenerScope ReadModuleNamesListener(*TheASTReader,
std::move(Listener));
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