Remove default from fully covered switch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 743a9da..51cc254 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3633,8 +3633,7 @@
     // illegal; expand it into a SELECT_CC.
     EVT VT = Node->getValueType(0);
     int TrueValue;
-    switch(TLI.getBooleanContents(VT.isVector())) {
-    default: assert(!"Unhandled BooleanContent value");
+    switch (TLI.getBooleanContents(VT.isVector())) {
     case TargetLowering::ZeroOrOneBooleanContent:
     case TargetLowering::UndefinedBooleanContent:
       TrueValue = 1;