Implement protected visibility. This partly implements PR1363. Linker

should be taught to deal with protected symbols.

llvm-svn: 36565

2 files changed, 5 insertions, 2 deletions

diff --git a/llvm/lib/Bytecode/Reader/Reader.cpp b/llvm/lib/Bytecode/Reader/Reader.cpp
index 99aac056ff3..e75f0fcd610 100644
--- a/llvm/lib/Bytecode/Reader/Reader.cpp
+++ b/llvm/lib/Bytecode/Reader/Reader.cpp
@@ -1532,6 +1532,7 @@ void BytecodeReader::ParseFunctionBody(Function* F) {
   switch (VisibilityID) {
   case 0: Visibility = GlobalValue::DefaultVisibility; break;
   case 1: Visibility = GlobalValue::HiddenVisibility; break;
+  case 2: Visibility = GlobalValue::ProtectedVisibility; break;
   default:
    error("Unknown visibility type: " + utostr(VisibilityID));
    Visibility = GlobalValue::DefaultVisibility;
@@ -1767,6 +1768,7 @@ void BytecodeReader::ParseModuleGlobalInfo() {
     switch (VisibilityID) {
     case 0: Visibility = GlobalValue::DefaultVisibility; break;
     case 1: Visibility = GlobalValue::HiddenVisibility; break;
+    case 2: Visibility = GlobalValue::ProtectedVisibility; break;
     default:
       error("Unknown visibility type: " + utostr(VisibilityID));
       Visibility = GlobalValue::DefaultVisibility;
diff --git a/llvm/lib/Bytecode/Writer/Writer.cpp b/llvm/lib/Bytecode/Writer/Writer.cpp
index f1c6f6c5619..b4a26916008 100644
--- a/llvm/lib/Bytecode/Writer/Writer.cpp
+++ b/llvm/lib/Bytecode/Writer/Writer.cpp
@@ -957,8 +957,9 @@ static unsigned getEncodedLinkage(const GlobalValue *GV) {
 static unsigned getEncodedVisibility(const GlobalValue *GV) {
   switch (GV->getVisibility()) {
   default: assert(0 && "Invalid visibility!");
-  case GlobalValue::DefaultVisibility: return 0;
-  case GlobalValue::HiddenVisibility:  return 1;
+  case GlobalValue::DefaultVisibility:   return 0;
+  case GlobalValue::HiddenVisibility:    return 1;
+  case GlobalValue::ProtectedVisibility: return 2;
   }
 }