Cleanup and fix generated comments in the top-level compiler.

src/arm/fast-codegen-arm.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 105 matching lines @@
       Slot* slot = fun->scope()->parameter(i)->slot();
       ASSERT(slot != NULL && slot->type() != Slot::CONTEXT);
     }
 #endif
   }
 
   // Check the stack for overflow or break request.
   // Put the lr setup instruction in the delay slot.  The kInstrSize is
   // added to the implicit 8 byte offset that always applies to operations
   // with pc and gives a return address 12 bytes down.
-  Comment cmnt(masm_, "[ Stack check");
+  { Comment cmnt(masm_, "[ Stack check");
   __ LoadRoot(r2, Heap::kStackLimitRootIndex);
   __ add(lr, pc, Operand(Assembler::kInstrSize));
   __ cmp(sp, Operand(r2));
   StackCheckStub stub;
   __ mov(pc,
          Operand(reinterpret_cast<intptr_t>(stub.GetCode().location()),
                  RelocInfo::CODE_TARGET),
          LeaveCC,
          lo);
+  }
 
   { Comment cmnt(masm_, "[ Declarations");
     VisitDeclarations(fun->scope()->declarations());
   }
 
   if (FLAG_trace) {
     __ CallRuntime(Runtime::kTraceEnter, 0);
   }
 
   { Comment cmnt(masm_, "[ Body");
@@ skipping 173 matching lines @@
   __ push(source);
   __ CallRuntime(Runtime::kToBool, 1);
   __ LoadRoot(ip, Heap::kTrueValueRootIndex);
   __ cmp(r0, ip);
   __ b(eq, true_label);
   __ jmp(false_label);
 }
 
 
 void FastCodeGenerator::VisitDeclaration(Declaration* decl) {
+  Comment cmnt(masm_, "[ Declaration");
   Variable* var = decl->proxy()->var();
   ASSERT(var != NULL);  // Must have been resolved.
   Slot* slot = var->slot();
   ASSERT(slot != NULL);  // No global declarations here.
 
   // We have 3 cases for slots: LOOKUP, LOCAL, CONTEXT.
   switch (slot->type()) {
     case Slot::LOOKUP: {
       __ mov(r2, Operand(var->name()));
       // Declaration nodes are always introduced in one of two modes.
@@ skipping 1224 matching lines @@
   true_label_ = saved_true;
   false_label_ = saved_false;
   // Convert current context to test context: End post-test code.
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal