Implement visibility checking during linking. Also implement protected

visibility support for bitcode.

llvm-svn: 36577

2 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 6157a5db5d9..07089a85afe 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -59,6 +59,7 @@ static GlobalValue::VisibilityTypes GetDecodedVisibility(unsigned Val) {
   default: // Map unknown visibilities to default.
   case 0: return GlobalValue::DefaultVisibility;
   case 1: return GlobalValue::HiddenVisibility;
+  case 2: return GlobalValue::ProtectedVisibility;
   }
 }
 
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index 2a4b13a9478..eccfd429024 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -187,8 +187,9 @@ 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;
   }
 }