Remove unnecessary includes from pnacl-freeze.

tools/pnacl-freeze/pnacl-freeze.cpp

 /* Copyright 2013 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can
  * be found in the LICENSE file.
  */
 
 //===-- pnacl-freeze.cpp - The low-level NaCl bitcode freezer     --------===//
 //
 //===----------------------------------------------------------------------===//
 //
 // Generates NaCl pexe wire format.
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/IR/LLVMContext.h"

[jvoung - send to chromium..., 2013/04/29 18:11:29]

Don't you need LLVMContext.h for the LLVMContext instance below?

[Karl, 2013/04/29 20:57:22]

Apparently it is included from one of the other files. Adding it back to make it
clear that we are using it.

-#include "llvm/Assembly/AssemblyAnnotationWriter.h"
 // Note: We need the following to provide the API for calling the NaCl
 // Bitcode Writer to generate the frozen file.
 #include "llvm/Bitcode/NaCl/NaClReaderWriter.h"
 // Note: We need the following to provide the API for calling the (LLVM)
 // Bitcode Reader to read in the corresonding pexe file to freeze.
 #include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/DebugInfo.h"
 #include "llvm/IR/IntrinsicInst.h"

[jvoung - send to chromium..., 2013/04/29 18:11:29]

do you need intrinsicinst.h?

[Karl, 2013/04/29 20:57:22]

Guess I goofed in my testing. Not needed and removed.

 #include "llvm/IR/Module.h"
-#include "llvm/IR/Type.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/DataStream.h"
-#include "llvm/Support/FormattedStream.h"
 #include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Support/system_error.h"
-
-// llvm/Bitcode/BitstreamWriter.h
 
 using namespace llvm;
 
 
 static cl::opt<std::string>
 OutputFilename("o", cl::desc("Specify output filename"),
                cl::value_desc("filename"));
 
 static cl::opt<std::string>
 InputFilename(cl::Positional, cl::desc("<pexe file>"), cl::Required);
@@ skipping 47 matching lines @@
     if (ErrorMessage.size())
       errs() << ErrorMessage << "\n";
     else
       errs() << "bitcode didn't read correctly.\n";
     return 1;
   }
 
   WriteOutputFile(M.get());
   return 0;
 }