Add malloc/new profiling on linux

src/IceCompileServer.cpp

 //===- subzero/src/IceCompileServer.cpp - Compile server ------------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
 /// \brief Defines the basic commandline-based compile server.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "IceCompileServer.h"
 
 #include "IceClFlags.h"
 #include "IceClFlagsExtra.h"
 #include "IceELFStreamer.h"
 #include "IceGlobalContext.h"
+#include "LinuxMallocProfiling.h"
 
 #ifdef __clang__
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wunused-parameter"
 #endif // __clang__
 
 #include "llvm/Bitcode/NaCl/NaClBitcodeMungeUtils.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/raw_os_ostream.h"
 #include "llvm/Support/Signals.h"
@@ skipping 129 matching lines @@
   ClFlags::parseFlags(argc, argv);
   ClFlags &Flags = GlobalContext::Flags;
   ClFlagsExtra &ExtraFlags = GlobalContext::ExtraFlags;
   ClFlags::getParsedClFlags(Flags);
   ClFlags::getParsedClFlagsExtra(ExtraFlags);
 
   // Override report_fatal_error if we want to exit with 0 status.
   if (ExtraFlags.getAlwaysExitSuccess())
     llvm::install_fatal_error_handler(reportFatalErrorThenExitSuccess, this);
 
+  Ice::LinuxMallocProfiling MallocProfile(Flags.getNumTranslationThreads());

[John, 2016/03/15 15:19:06]

you don't need MallocProfile for anything but RAII, right? I would **suggest**
renaming it to something less "visible" (I tend to name these RAII variables _)

[sehr, 2016/03/17 16:47:14]

Done.

+
   std::error_code EC;
   std::unique_ptr<Ostream> Ls = makeStream(ExtraFlags.getLogFilename(), EC);
   if (EC) {
     llvm::report_fatal_error("Unable to open log file");
   }
   Ls->SetUnbuffered();
   std::unique_ptr<Ostream> Os;
   std::unique_ptr<ELFStreamer> ELFStr;
   switch (Flags.getOutFileType()) {
   case FT_Elf: {
@@ skipping 56 matching lines @@
     CompileThread.join();
   } else {
     getCompiler().run(ExtraFlags, *Ctx.get(), std::move(InputStream));
   }
   transferErrorCode(
       getReturnValue(static_cast<ErrorCodes>(Ctx->getErrorStatus()->value())));
   Ctx->dumpConstantLookupCounts();
 }
 
 } // end of namespace Ice