assert(0) -> LLVM_UNREACHABLE.
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75379 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16ISelLowering.cpp b/lib/Target/PIC16/PIC16ISelLowering.cpp
index 02547b5..c8c353f 100644
--- a/lib/Target/PIC16/PIC16ISelLowering.cpp
+++ b/lib/Target/PIC16/PIC16ISelLowering.cpp
@@ -1697,7 +1697,7 @@
 
 static PIC16CC::CondCodes IntCCToPIC16CC(ISD::CondCode CC) {
   switch (CC) {
-  default: assert(0 && "Unknown condition code!");
+  default: LLVM_UNREACHABLE("Unknown condition code!");
   case ISD::SETNE:  return PIC16CC::NE;
   case ISD::SETEQ:  return PIC16CC::EQ;
   case ISD::SETGT:  return PIC16CC::GT;