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

1 files changed, 2 insertions, 2 deletions

diff --git a/include/llvm/Support/InstVisitor.h b/include/llvm/Support/InstVisitor.h
index 768f4877ad..2fa8c4793c 100644
--- a/include/llvm/Support/InstVisitor.h
+++ b/include/llvm/Support/InstVisitor.h
@@ -14,6 +14,7 @@
 #include "llvm/Function.h"
 #include "llvm/Instructions.h"
 #include "llvm/Module.h"
+#include "llvm/Support/ErrorHandling.h"
 
 namespace llvm {
 
@@ -113,8 +114,7 @@ public:
   //
   RetTy visit(Instruction &I) {
     switch (I.getOpcode()) {
-    default: assert(0 && "Unknown instruction type encountered!");
-             abort();
+    default: LLVM_UNREACHABLE("Unknown instruction type encountered!");
       // Build the switch statement using the Instruction.def file...
 #define HANDLE_INST(NUM, OPCODE, CLASS) \
     case Instruction::OPCODE: return \