Subzero: Shorten global prefixes in non-DUMP build.

src/IceClFlags.cpp

 //===- subzero/src/IceClFlags.cpp - Command line flags and parsing --------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 66 matching lines @@
 /// Decorate textual asm output with register liveness info.
 cl::opt<bool> DecorateAsm(
     "asm-verbose",
     cl::desc("Decorate textual asm output with register liveness info"));
 
 /// Define default function prefix for naming unnamed functions.
 cl::opt<std::string>
     DefaultFunctionPrefix("default-function-prefix",
                           cl::desc("Define default function prefix for naming "
                                    "unnamed functions"),
-                          cl::init("Function"));
+                          cl::init(Ice::BuildDefs::dump() ? "Function" : "F"));
 
 /// Define default global prefix for naming unnamed globals.
 cl::opt<std::string>
     DefaultGlobalPrefix("default-global-prefix",
                         cl::desc("Define default global prefix for naming "
                                  "unnamed globals"),
-                        cl::init("Global"));
+                        cl::init(Ice::BuildDefs::dump() ? "Global" : "G"));
 
 /// Disable hybrid assembly when -filetype=iasm.
 cl::opt<bool> DisableHybridAssembly(
     "no-hybrid-asm", cl::desc("Disable hybrid assembly when -filetype=iasm"),
     cl::init(false));
 
 /// Externalize all symbols.
 cl::opt<bool> DisableInternal("externalize",
                               cl::desc("Externalize all symbols"));
 
@@ skipping 491 matching lines @@
   OutFlagsExtra.setGenerateBuildAtts(GenerateBuildAtts);
   OutFlagsExtra.setLLVMVerboseErrors(LLVMVerboseErrors);
   OutFlagsExtra.setAppName(AppName);
   OutFlagsExtra.setInputFileFormat(InputFileFormat);
   OutFlagsExtra.setIRFilename(IRFilename);
   OutFlagsExtra.setLogFilename(LogFilename);
   OutFlagsExtra.setOutputFilename(OutputFilename);
 }
 
 } // end of namespace Ice