Implement changes from Chris's feedback.
Finish converting lib/Target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75043 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp
index afb1e1d..1dc6e76 100644
--- a/lib/Target/X86/X86CodeEmitter.cpp
+++ b/lib/Target/X86/X86CodeEmitter.cpp
@@ -32,7 +32,6 @@
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetOptions.h"
 using namespace llvm;
 
@@ -806,10 +805,10 @@
   }
 
   if (!Desc->isVariadic() && CurOp != NumOps) {
-    std::string msg;
-    raw_string_ostream Msg(msg);
-    Msg << "Cannot encode: " << MI;
-    llvm_report_error(Msg.str());
+#ifndef NDEBUG
+    cerr << "Cannot encode: " << MI << "\n";
+#endif
+    llvm_unreachable();
   }
 }