simplify and tidy up


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119066 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index 73d3e1c..2d5b4c4 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -802,9 +802,8 @@
 void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
   ARMMCInstLower MCInstLowering(OutContext, *Mang, *this);
   switch (MI->getOpcode()) {
-  case ARM::t2MOVi32imm:
-    assert(0 && "Should be lowered by thumb2it pass");
   default: break;
+  case ARM::t2MOVi32imm: assert(0 && "Should be lowered by thumb2it pass");
   case ARM::DBG_VALUE: {
     if (isVerbose() && OutStreamer.hasRawTextSupport()) {
       SmallString<128> TmpStr;