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/Alpha/AsmPrinter/AlphaAsmPrinter.cpp b/lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
index feab490..11f177d 100644
--- a/lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
+++ b/lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
@@ -101,7 +101,7 @@
     return;
 
   case MachineOperand::MO_Immediate:
-    llvm_report_error("printOp() does not handle immediate values");
+    LLVM_UNREACHABLE("printOp() does not handle immediate values");
     return;
 
   case MachineOperand::MO_MachineBasicBlock: