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Debug Info: Generate imported entities for implicitly imported parent modules.

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The Swift compiler uses an ugly hack that auto-imports a submodule's
top-level-module, even if we didn't ask for it. Reflect that in the
debug info.

<rdar://problem/31310320>
This commit is contained in:
Adrian Prantl
2017-05-17 12:58:04 -07:00
parent 5e31b5bab3
commit 68a5cadb90
2 changed files with 19 additions and 1 deletions
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15
lib/IRGen/IRGenDebugInfo.cpp
View File

@@ -96,6 +96,8 @@ class IRGenDebugInfoImpl : public IRGenDebugInfo {
/// A list of replaceable fwddecls that need to be RAUWed at the end.
std::vector<std::pair<TypeBase *, llvm::TrackingMDRef>> ReplaceMap;
/// The set of imported modules.
llvm::DenseSet<ModuleDecl::ImportedModule> ImportedModules;
llvm::BumpPtrAllocator DebugInfoNames;
StringRef CWDName; /// The current working directory.
@@ -1550,6 +1552,15 @@ IRGenDebugInfoImpl::IRGenDebugInfoImpl(const IRGenOptions &Opts,
void IRGenDebugInfoImpl::finalize() {
assert(LocationStack.empty() && "Mismatch of pushLoc() and popLoc().");
// Get the list of imported modules (which may actually be different
// from all ImportDecls).
SmallVector<ModuleDecl::ImportedModule, 8> ModuleWideImports;
IGM.getSwiftModule()->getImportedModules(ModuleWideImports,
ModuleDecl::ImportFilter::All);
for (auto M : ModuleWideImports)
if (!ImportedModules.count(M))
DBuilder.createImportedModule(MainFile, getOrCreateModule(M), 0);
// Finalize all replaceable forward declarations.
for (auto &Ty : ReplaceMap) {
llvm::TempMDNode FwdDecl(cast<llvm::MDNode>(Ty.second));
@@ -1716,9 +1727,11 @@ void IRGenDebugInfoImpl::emitImport(ImportDecl *D) {
assert(M && "Could not find module for import decl.");
return;
}
auto DIMod = getOrCreateModule({D->getModulePath(), M});
ModuleDecl::ImportedModule Imported = {D->getModulePath(), M};
auto DIMod = getOrCreateModule(Imported);
auto L = getDebugLoc(*this, D);
DBuilder.createImportedModule(getOrCreateFile(L.Filename), DIMod, L.Line);
ImportedModules.insert(Imported);
}
llvm::DISubprogram *IRGenDebugInfoImpl::emitFunction(SILFunction &SILFn,

5
test/DebugInfo/ImportClangSubmodule.swift
View File

@@ -10,7 +10,12 @@
// CHECK-SAME: configMacros:
// CHECK-SAME: {{..}}-DFOO=foo{{..}}
// CHECK-SAME: {{..}}-UBAR{{..}}
// CHECK: !DIImportedEntity({{.*}}, entity: ![[SUBMODULE]], line: [[@LINE+1]])
import ClangModule.SubModule
// The Swift compiler uses an ugly hack that auto-imports a
// submodule's top-level-module, even if we didn't ask for it.
// CHECK: !DIImportedEntity({{.*}}, entity: ![[CLANGMODULE]])
let bar = Bar()