Subzero: Decorate the text asm output with register availability info.

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 102 matching lines @@
 static cl::opt<std::string> VerboseFocusOn(
     "verbose-focus",
     cl::desc("Temporarily enable full verbosity for a specific function"),
     cl::init(""));
 
 static cl::opt<bool>
 EnablePhiEdgeSplit("phi-edge-split",
                    cl::desc("Enable edge splitting for Phi lowering"),
                    cl::init(true));
 
+static cl::opt<bool> DecorateAsm(
+    "asm-verbose",
+    cl::desc("Decorate textual asm output with register liveness info"));
+
 static cl::opt<bool>
 DumpStats("stats",
           cl::desc("Print statistics after translating each function"));
 
 // This is currently needed by crosstest.py.
 static cl::opt<bool> AllowUninitializedGlobals(
     "allow-uninitialized-globals",
     cl::desc("Allow global variables to be uninitialized"));
 
 static cl::opt<NaClFileFormat> InputFileFormat(
@@ skipping 116 matching lines @@
 
   Ice::ClFlags Flags;
   Flags.DisableInternal = DisableInternal;
   Flags.SubzeroTimingEnabled = SubzeroTimingEnabled;
   Flags.DisableTranslation = DisableTranslation;
   Flags.FunctionSections = FunctionSections;
   Flags.DataSections = DataSections;
   Flags.UseIntegratedAssembler = UseIntegratedAssembler;
   Flags.UseSandboxing = UseSandboxing;
   Flags.PhiEdgeSplit = EnablePhiEdgeSplit;
+  Flags.DecorateAsm = DecorateAsm;
   Flags.DumpStats = DumpStats;
   Flags.AllowUninitializedGlobals = AllowUninitializedGlobals;
   Flags.TimeEachFunction = TimeEachFunction;
   Flags.DefaultGlobalPrefix = DefaultGlobalPrefix;
   Flags.DefaultFunctionPrefix = DefaultFunctionPrefix;
   Flags.TimingFocusOn = TimingFocusOn;
   Flags.VerboseFocusOn = VerboseFocusOn;
   Flags.TranslateOnly = TranslateOnly;
 
   Ice::GlobalContext Ctx(Ls, Os, VMask, TargetArch, OptLevel, TestPrefix,
@@ skipping 29 matching lines @@
   if (TimeEachFunction) {
     const bool DumpCumulative = false;
     Ctx.dumpTimers(Ice::GlobalContext::TSK_Funcs, DumpCumulative);
   }
   if (SubzeroTimingEnabled)
     Ctx.dumpTimers();
   const bool FinalStats = true;
   Ctx.dumpStats("_FINAL_", FinalStats);
   return GetReturnValue(ErrorStatus);
 }