1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index 26c922a781..fd1bade8f1 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -688,6 +688,11 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
       Record.clear();
       continue;
     }
+
+    // Ignore all values in ValueList except for Constants.
+    if (V && (isa<Instruction>(V) || isa<Argument>(V)))
+      continue;
+
     const Constant *C = cast<Constant>(V);
     unsigned Code = -1U;
     unsigned AbbrevToUse = 0;