Remove linkonce_odr_auto_hide.

linkonce_odr_auto_hide was in incomplete attempt to implement a way
for the linker to hide symbols that are known to be available in every
TU and whose addresses are not relevant for a particular DSO.

It was redundant in that it all its uses are equivalent to
linkonce_odr+unnamed_addr. Unlike those, it has never been connected
to clang or llvm's optimizers, so it was effectively dead.

Given that nothing produces it, this patch just nukes it
(other than the llvm-c enum value).

llvm-svn: 193865

2 files changed, 0 insertions, 2 deletions

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 1661990f065..2a2f96cd1d3 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -90,7 +90,6 @@ static GlobalValue::LinkageTypes GetDecodedLinkage(unsigned Val) {
   case 12: return GlobalValue::AvailableExternallyLinkage;
   case 13: return GlobalValue::LinkerPrivateLinkage;
   case 14: return GlobalValue::LinkerPrivateWeakLinkage;
-  case 15: return GlobalValue::LinkOnceODRAutoHideLinkage;
   }
 }
 
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index b082ba6bfd2..6f7aa14ed09 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -489,7 +489,6 @@ static unsigned getEncodedLinkage(const GlobalValue *GV) {
   case GlobalValue::AvailableExternallyLinkage:      return 12;
   case GlobalValue::LinkerPrivateLinkage:            return 13;
   case GlobalValue::LinkerPrivateWeakLinkage:        return 14;
-  case GlobalValue::LinkOnceODRAutoHideLinkage:      return 15;
   }
   llvm_unreachable("Invalid linkage");
 }