1 files changed, 32 insertions, 0 deletions
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 3c0ba31..7b8554c 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2814,6 +2814,38 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
   if (Args.hasArg(OPT_fapply_global_visibility_to_externs))
     Opts.SetVisibilityForExternDecls = 1;
 
+  if (Args.hasArg(OPT_fvisibility_from_dllstorageclass)) {
+    Opts.VisibilityFromDLLStorageClass = 1;
+
+    // Translate dllexport defintions to default visibility, by default.
+    if (Arg *O = Args.getLastArg(OPT_fvisibility_dllexport_EQ))
+      Opts.setDLLExportVisibility(parseVisibility(O, Args, Diags));
+    else
+      Opts.setDLLExportVisibility(DefaultVisibility);
+
+    // Translate defintions without an explict DLL storage class to hidden
+    // visibility, by default.
+    if (Arg *O = Args.getLastArg(OPT_fvisibility_nodllstorageclass_EQ))
+      Opts.setNoDLLStorageClassVisibility(parseVisibility(O, Args, Diags));
+    else
+      Opts.setNoDLLStorageClassVisibility(HiddenVisibility);
+
+    // Translate dllimport external declarations to default visibility, by
+    // default.
+    if (Arg *O = Args.getLastArg(OPT_fvisibility_externs_dllimport_EQ))
+      Opts.setExternDeclDLLImportVisibility(parseVisibility(O, Args, Diags));
+    else
+      Opts.setExternDeclDLLImportVisibility(DefaultVisibility);
+
+    // Translate external declarations without an explicit DLL storage class
+    // to hidden visibility, by default.
+    if (Arg *O = Args.getLastArg(OPT_fvisibility_externs_nodllstorageclass_EQ))
+      Opts.setExternDeclNoDLLStorageClassVisibility(
+          parseVisibility(O, Args, Diags));
+    else
+      Opts.setExternDeclNoDLLStorageClassVisibility(HiddenVisibility);
+  }
+
   if (Args.hasArg(OPT_ftrapv)) {
     Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
     // Set the handler, if one is specified.