[Modules] Consider -fmodule-feature in module hash and when loading

Any extra features from -fmodule-feature are part of the module hash and
need to get validated on load.  Also print them with -module-file-info.

llvm-svn: 240433

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/Frontend/FrontendActions.cpp b/clang/lib/Frontend/FrontendActions.cpp
index 6f202a15483..49977646881 100644
--- a/clang/lib/Frontend/FrontendActions.cpp
+++ b/clang/lib/Frontend/FrontendActions.cpp
@@ -470,6 +470,13 @@ namespace {
 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
 #include "clang/Basic/LangOptions.def"
+
+      if (!LangOpts.ModuleFeatures.empty()) {
+        Out.indent(4) << "Module features:\n";
+        for (StringRef Feature : LangOpts.ModuleFeatures)
+          Out.indent(6) << Feature << "\n";
+      }
+
       return false;
     }