diff --git a/clang/lib/Sema/SemaStmt.cpp b/clang/lib/Sema/SemaStmt.cpp
index 6704858..56ac7c5 100644
--- a/clang/lib/Sema/SemaStmt.cpp
+++ b/clang/lib/Sema/SemaStmt.cpp
@@ -2798,16 +2798,14 @@
                                     SourceLocation AsmLoc,
                                     ArrayRef<Token> AsmToks,
                                     const TargetInfo &TI) {
-  // Assume simple asm stmt until we parse a non-register identifer.
-  IsSimple = true;
-
-  if (AsmToks.empty())
-    return "";
-
+  assert (!AsmToks.empty() && "Didn't expect an empty AsmToks!");
   std::string Res;
   IdentifierInfo *II = AsmToks[0].getIdentifierInfo();
   Res = II->getName().str();
 
+  // Assume simple asm stmt until we parse a non-register identifer.
+  IsSimple = true;
+
   // Check the operands.
   for (unsigned i = 1, e = AsmToks.size(); i != e; ++i) {
     if (needSpaceAsmToken(AsmToks[i]))
@@ -2856,9 +2854,7 @@
 static std::string buildMSAsmString(Sema &SemaRef,
                                     ArrayRef<Token> AsmToks,
                                     ArrayRef<unsigned> LineEnds) {
-  if (AsmToks.empty())
-    return "";
-
+  assert (!AsmToks.empty() && "Didn't expect an empty AsmToks!");
   SmallString<512> Asm;
   SmallString<512> TokenBuf;
   TokenBuf.resize(512);