Subzero: Add rudimentary statistics on generated code.

src/llvm2ice.cpp

 //===- subzero/src/llvm2ice.cpp - Driver for testing ----------------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines a driver that uses LLVM capabilities to parse a
@@ skipping 84 matching lines @@
 
 static cl::opt<bool>
     DisableGlobals("disable-globals",
                    cl::desc("Disable global initializer translation"));
 
 // This is currently unused, and is a placeholder for lit tests.
 static cl::opt<bool>
     DisablePhiEdgeSplit("no-phi-edge-split",
                         cl::desc("Disable edge splitting for Phi lowering"));
 
+static cl::opt<bool>
+DumpStats("stats",
+          cl::desc("Print statistics after translating each function"));
+
 static cl::opt<NaClFileFormat> InputFileFormat(
     "bitcode-format", cl::desc("Define format of input file:"),
     cl::values(clEnumValN(LLVMFormat, "llvm", "LLVM file (default)"),
                clEnumValN(PNaClFormat, "pnacl", "PNaCl bitcode file"),
                clEnumValEnd),
     cl::init(LLVMFormat));
 
 static cl::opt<std::string>
     DefaultGlobalPrefix("default-global-prefix",
                         cl::desc("Define default global prefix for naming "
@@ skipping 33 matching lines @@
   raw_os_ostream *Ls = new raw_os_ostream(LogFilename == "-" ? std::cout : Lfs);
   Ls->SetUnbuffered();
 
   Ice::ClFlags Flags;
   Flags.DisableInternal = DisableInternal;
   Flags.SubzeroTimingEnabled = SubzeroTimingEnabled;
   Flags.DisableTranslation = DisableTranslation;
   Flags.DisableGlobals = DisableGlobals;
   Flags.FunctionSections = FunctionSections;
   Flags.UseSandboxing = UseSandboxing;
+  Flags.DumpStats = DumpStats;
   Flags.DefaultGlobalPrefix = DefaultGlobalPrefix;
   Flags.DefaultFunctionPrefix = DefaultFunctionPrefix;
 
   Ice::GlobalContext Ctx(Ls, Os, VMask, TargetArch, OptLevel, TestPrefix,
                          Flags);
 
   if (BuildOnRead) {
     Ice::PNaClTranslator Translator(&Ctx, Flags);
     Translator.translate(IRFilename);
     return Translator.getErrorStatus();
@@ skipping 12 matching lines @@
     if (!Mod) {
       Err.print(argv[0], errs());
       return 1;
     }
 
     Ice::Converter Converter(Mod, &Ctx, Flags);
     Converter.convertToIce();
     return Converter.getErrorStatus();
   }
 }