Cleanup dump() functions.

We had various variants of defining dump() functions in LLVM. Normalize
them (this should just consistently implement the things discussed in
http://lists.llvm.org/pipermail/cfe-dev/2014-January/034323.html

For reference:
- Public headers should just declare the dump() method but not use
  LLVM_DUMP_METHOD or #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
- The definition of a dump method should look like this:
  #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  LLVM_DUMP_METHOD void MyClass::dump() {
    // print stuff to dbgs()...
  }
  #endif

llvm-svn: 293359
diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
index d27e04fccf..d77717e 100644
--- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -1255,7 +1255,7 @@
 
     switch (Opc) {
     default:
-      MI->dump();
+      MI->print(errs());
       llvm_unreachable("Unsupported opcode for unwinding information");
     case ARM::tPUSH:
       // Special case here: no src & dst reg, but two extra imp ops.
@@ -1291,7 +1291,7 @@
       int64_t Offset = 0;
       switch (Opc) {
       default:
-        MI->dump();
+        MI->print(errs());
         llvm_unreachable("Unsupported opcode for unwinding information");
       case ARM::MOVr:
       case ARM::tMOVr:
@@ -1346,11 +1346,11 @@
         }
       }
     } else if (DstReg == ARM::SP) {
-      MI->dump();
+      MI->print(errs());
       llvm_unreachable("Unsupported opcode for unwinding information");
     }
     else {
-      MI->dump();
+      MI->print(errs());
       llvm_unreachable("Unsupported opcode for unwinding information");
     }
   }