Remove -ftrapu.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68330 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/clang-cc/clang-cc.cpp b/tools/clang-cc/clang-cc.cpp
index 1a10896..19f42b4 100644
--- a/tools/clang-cc/clang-cc.cpp
+++ b/tools/clang-cc/clang-cc.cpp
@@ -680,18 +680,12 @@
 }
 
 static llvm::cl::opt<bool>
-UnsignedOverflowChecking("ftrapu",
-                         llvm::cl::desc("Trap on unsigned and signed integer overflow"),
-                         llvm::cl::init(false));
-
-static llvm::cl::opt<bool>
 OverflowChecking("ftrapv",
-           llvm::cl::desc("Trap on signed integer overflow"),
+           llvm::cl::desc("Trap on integer overflow"),
            llvm::cl::init(false));
 
 void InitializeOverflowChecking(LangOptions &Options) {
-  Options.OverflowChecking = OverflowChecking | UnsignedOverflowChecking;
-  Options.UnsignedOverflowChecking = UnsignedOverflowChecking;
+  Options.OverflowChecking = OverflowChecking;
 }
 //===----------------------------------------------------------------------===//
 // Target Triple Processing.