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/CodeGen/SelectionDAG/ScheduleDAGList.cpp b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
index c4325349990..afce34879c2 100644
--- a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
@@ -29,6 +29,7 @@
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Compiler.h"
+#include "llvm/Support/ErrorHandling.h"
 #include "llvm/ADT/PriorityQueue.h"
 #include "llvm/ADT/Statistic.h"
 #include <climits>
@@ -113,7 +114,7 @@ void ScheduleDAGList::ReleaseSucc(SUnit *SU, const SDep &D) {
     cerr << "*** Scheduling failed! ***\n";
     SuccSU->dump(this);
     cerr << " has been released too many times!\n";
-    assert(0);
+    llvm_unreachable();
   }
 #endif