[Modules] Resolve top-headers of modules lazily.
This allows resolving top-header filenames of modules to FileEntries when
we need them, not eagerly.
Note that that this breaks ABI for libclang functions
clang_Module_getTopLevelHeader / clang_Module_getNumTopLevelHeaders
but this is fine because they are experimental and not widely used yet.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176975 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/ModuleMap.cpp b/lib/Lex/ModuleMap.cpp
index 81cb94d..f9b4e2c 100644
--- a/lib/Lex/ModuleMap.cpp
+++ b/lib/Lex/ModuleMap.cpp
@@ -202,7 +202,7 @@
llvm::sys::path::stem(File->getName()), NameBuf);
Result = findOrCreateModule(Name, Result, /*IsFramework=*/false,
Explicit).first;
- Result->TopHeaders.insert(File);
+ Result->addTopHeader(File);
// If inferred submodules export everything they import, add a
// wildcard to the set of exports.