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, 2 insertions, 1 deletions

diff --git a/llvm/lib/Support/FoldingSet.cpp b/llvm/lib/Support/FoldingSet.cpp
index 41c730e3e1e..0f61067d60d 100644
--- a/llvm/lib/Support/FoldingSet.cpp
+++ b/llvm/lib/Support/FoldingSet.cpp
@@ -15,6 +15,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/FoldingSet.h"
+#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
 #include <cassert>
 #include <cstring>
@@ -50,7 +51,7 @@ void FoldingSetNodeID::AddInteger(unsigned long I) {
   else if (sizeof(long) == sizeof(long long)) {
     AddInteger((unsigned long long)I);
   } else {
-    assert(0 && "unexpected sizeof(long)");
+    LLVM_UNREACHABLE("unexpected sizeof(long)");
   }
 }
 void FoldingSetNodeID::AddInteger(long long I) {