diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index 6994b30..9cfa5b9 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -1258,7 +1258,7 @@
 
       // If we found a newline, adjust the pointer and jump to the handling code.
       if (Mask != 0) {
-        NextBuf += llvm::CountTrailingZeros_32(Mask);
+        NextBuf += llvm::countTrailingZeros(Mask);
         goto FoundSpecialChar;
       }
       NextBuf += 16;