Add support for the OpenCL vec_step operator, by generalising and
extending the existing support for sizeof and alignof.  Original
patch by Guy Benyei.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127475 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp b/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp
index 905a99e..b540bce 100644
--- a/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp
@@ -204,7 +204,7 @@
   // Run each of the checks on the conditions
   if (containsMacro(cond) || containsEnum(cond)
       || containsStaticLocal(cond) || containsBuiltinOffsetOf(cond)
-      || containsStmt<SizeOfAlignOfExpr>(cond))
+      || containsStmt<UnaryExprOrTypeTraitExpr>(cond))
     return true;
 
   return false;