Convert assert(0) to llvm_unreachable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149961 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index 8ec18bb..b25fcde 100644
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -2361,8 +2361,7 @@
   SDValue Ops[] = { FalseVal, TrueVal, Tmp2, CCR, InFlag };
   unsigned Opc = 0;
   switch (VT.getSimpleVT().SimpleTy) {
-  default: assert(false && "Illegal conditional move type!");
-    break;
+  default: llvm_unreachable("Illegal conditional move type!");
   case MVT::i32:
     Opc = Subtarget->isThumb()
       ? (Subtarget->hasThumb2() ? ARM::t2MOVCCr : ARM::tMOVCCr_pseudo)