[turbofan] Output file for C1 visualizer.

src/compiler/instruction.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/instruction.h"
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/generic-node-inl.h"
 
 namespace v8 {
@@ skipping 273 matching lines @@
     if (fm != kFlags_none) {
       os << " && " << fm << " if "
          << FlagsConditionField::decode(instr.opcode());
     }
   }
   if (instr.InputCount() > 0) {
     for (size_t i = 0; i < instr.InputCount(); i++) {
       os << " " << *instr.InputAt(i);
     }
   }
-  return os << "\n";
+  return os;
 }
 
 
 std::ostream& operator<<(std::ostream& os, const Constant& constant) {
   switch (constant.type()) {
     case Constant::kInt32:
       return os << constant.ToInt32();
     case Constant::kInt64:
       return os << constant.ToInt64() << "l";
     case Constant::kFloat32:
@@ skipping 251 matching lines @@
         os << " v" << (*iter)->id();
       }
       os << "\n";
     }
 
     ScopedVector<char> buf(32);
     for (int j = block->first_instruction_index();
          j <= block->last_instruction_index(); j++) {
       // TODO(svenpanne) Add some basic formatting to our streams.
       SNPrintF(buf, "%5d", j);
-      os << "   " << buf.start() << ": " << *code.InstructionAt(j);
+      os << "   " << buf.start() << ": " << *code.InstructionAt(j) << "\n";
     }
 
     os << "  " << block->control();
 
     if (block->control_input() != NULL) {
       os << " v" << block->control_input()->id();
     }
 
     for (BasicBlock::Successors::iterator iter = block->successors_begin();
          iter != block->successors_end(); ++iter) {
       os << " B" << (*iter)->id();
     }
     os << "\n";
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8