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.

llvm-svn: 75379

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Support/CommandLine.cpp b/llvm/lib/Support/CommandLine.cpp
index 0fe949c8772..400241f4d4b 100644
--- a/llvm/lib/Support/CommandLine.cpp
+++ b/llvm/lib/Support/CommandLine.cpp
@@ -693,7 +693,7 @@ void cl::ParseCommandLineOptions(int argc, char **argv,
           ValNo++;
           break;
         default:
-          assert(0 && "Internal error, unexpected NumOccurrences flag in "
+          LLVM_UNREACHABLE("Internal error, unexpected NumOccurrences flag in "
                  "positional argument processing!");
         }
       }