diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index 2c45b34..12a1f5e 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -679,7 +679,8 @@
     }
 
     if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
-      Record.push_back(unsigned(IA->hasSideEffects()));
+      Record.push_back(unsigned(IA->hasSideEffects()) |
+                       unsigned(IA->isMsAsm()) << 1);
 
       // Add the asm string.
       const std::string &AsmStr = IA->getAsmString();