Subzero: Add "--verbose=status" option.

src/IceCfg.h

 //===- subzero/src/IceCfg.h - Control flow graph ----------------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 32 matching lines @@
   }
   /// Gets a pointer to the current thread's Cfg's allocator.
   static ArenaAllocator<> *getCurrentCfgAllocator() {
     assert(ICE_TLS_GET_FIELD(CurrentCfg));
     return ICE_TLS_GET_FIELD(CurrentCfg)->Allocator.get();
   }
 
   GlobalContext *getContext() const { return Ctx; }
   uint32_t getSequenceNumber() const { return SequenceNumber; }
 
+  static constexpr VerboseMask defaultVerboseMask() {
+    return IceV_All & ~IceV_Status;
+  }
   /// Returns true if any of the specified options in the verbose mask are set.
   /// If the argument is omitted, it checks if any verbose options at all are
   /// set.
-  bool isVerbose(VerboseMask Mask = IceV_All) const { return VMask & Mask; }
+  bool isVerbose(VerboseMask Mask = defaultVerboseMask()) const {
+    return VMask & Mask;
+  }
   void setVerbose(VerboseMask Mask) { VMask = Mask; }
 
   /// \name Manage the name and return type of the function being translated.
   /// @{
   void setFunctionName(const IceString &Name) { FunctionName = Name; }
   IceString getFunctionName() const { return FunctionName; }
   void setReturnType(Type Ty) { ReturnType = Ty; }
   /// @}
 
   /// \name Manage the "internal" attribute of the function.
@@ skipping 234 matching lines @@
 
 public:
   static void TlsInit() { ICE_TLS_INIT_FIELD(CurrentCfg); }
 };
 
 template <> Variable *Cfg::makeVariable<Variable>(Type Ty);
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECFG_H