Subzero: Add a few performance measurement tools.

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 77 matching lines @@
 static cl::opt<bool>
 DisableInternal("externalize",
                 cl::desc("Externalize all symbols"));
 static cl::opt<bool>
 DisableTranslation("notranslate", cl::desc("Disable Subzero translation"));
 
 static cl::opt<bool> SubzeroTimingEnabled(
     "timing", cl::desc("Enable breakdown timing of Subzero translation"));
 
 static cl::opt<bool>
-    DisableGlobals("disable-globals",
-                   cl::desc("Disable global initializer translation"));
+TimeEachFunction("timing-funcs",
+                 cl::desc("Print total translation time for each function"));
+
+static cl::opt<std::string> TimingFocusOn(
+    "timing-focus",
+    cl::desc("Break down timing for a specific function (use '*' for all)"),
+    cl::init(""));
+
+static cl::opt<std::string> VerboseFocusOn(
+    "verbose-focus",
+    cl::desc("Temporarily enable full verbosity for a specific function"),
+    cl::init(""));
+
+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"));
 
@@ skipping 52 matching lines @@
 
   Ice::ClFlags Flags;
   Flags.DisableInternal = DisableInternal;
   Flags.SubzeroTimingEnabled = SubzeroTimingEnabled;
   Flags.DisableTranslation = DisableTranslation;
   Flags.DisableGlobals = DisableGlobals;
   Flags.FunctionSections = FunctionSections;
   Flags.UseIntegratedAssembler = UseIntegratedAssembler;
   Flags.UseSandboxing = UseSandboxing;
   Flags.DumpStats = DumpStats;
+  Flags.TimeEachFunction = TimeEachFunction;
   Flags.DefaultGlobalPrefix = DefaultGlobalPrefix;
   Flags.DefaultFunctionPrefix = DefaultFunctionPrefix;
+  Flags.TimingFocusOn = TimingFocusOn;
+  Flags.VerboseFocusOn = VerboseFocusOn;
 
   Ice::GlobalContext Ctx(Ls, Os, VMask, TargetArch, OptLevel, TestPrefix,
                          Flags);
-  static Ice::TimerIdT IDszmain = Ice::GlobalContext::getTimerID("szmain");
-  Ice::TimerMarker T(IDszmain, &Ctx);
+  Ice::TimerMarker T(Ice::TimerStack::TT_szmain, &Ctx);
 
   int ErrorStatus = 0;
   if (BuildOnRead) {
     Ice::PNaClTranslator Translator(&Ctx, Flags);
     Translator.translate(IRFilename);
     ErrorStatus = Translator.getErrorStatus();
   } else {
     // Parse the input LLVM IR file into a module.
     SMDiagnostic Err;
-    static Ice::TimerIdT IDparse = Ice::GlobalContext::getTimerID("parse");
-    Ice::TimerMarker T1(IDparse, &Ctx);
+    Ice::TimerMarker T1(Ice::TimerStack::TT_parse, &Ctx);
     Module *Mod =
         NaClParseIRFile(IRFilename, InputFileFormat, Err, getGlobalContext());
 
     if (!Mod) {
       Err.print(argv[0], errs());
       return 1;
     }
 
     Ice::Converter Converter(Mod, &Ctx, Flags);
     Converter.convertToIce();
     ErrorStatus = Converter.getErrorStatus();
   }
+  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 ErrorStatus;
 }