Cleaned up and fixed code comment handling a bit.

src/x64/lithium-codegen-x64.cc

 // Copyright 2013 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 352 matching lines @@
 }
 
 
 bool LCodeGen::GenerateDeferredCode() {
   ASSERT(is_generating());
   if (deferred_.length() > 0) {
     for (int i = 0; !is_aborted() && i < deferred_.length(); i++) {
       LDeferredCode* code = deferred_[i];
       __ bind(code->entry());
       if (NeedsDeferredFrame()) {
-        Comment(";;; Deferred build frame",
+        Comment(";;; Deferred build frame @%d: %s.",
                 code->instruction_index(),
                 code->instr()->Mnemonic());
         ASSERT(!frame_is_built_);
         ASSERT(info()->IsStub());
         frame_is_built_ = true;
         // Build the frame in such a way that esi isn't trashed.
         __ push(rbp);  // Caller's frame pointer.
         __ push(Operand(rbp, StandardFrameConstants::kContextOffset));
         __ Push(Smi::FromInt(StackFrame::STUB));
         __ lea(rbp, Operand(rsp, 2 * kPointerSize));
       }
       Comment(";;; Deferred code @%d: %s.",
               code->instruction_index(),
               code->instr()->Mnemonic());
       code->Generate();
       if (NeedsDeferredFrame()) {
-        Comment(";;; Deferred destroy frame",
+        Comment(";;; Deferred destroy frame @%d: %s.",
                 code->instruction_index(),
                 code->instr()->Mnemonic());
         ASSERT(frame_is_built_);
         frame_is_built_ = false;
         __ movq(rsp, rbp);
         __ pop(rbp);
       }
       __ jmp(code->exit());
     }
   }
@@ skipping 518 matching lines @@
 }
 
 
 void LCodeGen::RecordPosition(int position) {
   if (position == RelocInfo::kNoPosition) return;
   masm()->positions_recorder()->RecordPosition(position);
 }
 
 
 void LCodeGen::DoLabel(LLabel* label) {
-  if (label->is_loop_header()) {
-    Comment(";;; B%d - LOOP entry", label->block_id());
-  } else {
-    Comment(";;; B%d", label->block_id());
-  }
+  Comment(";;; -------------------- B%d%s --------------------",
+          label->block_id(),
+          label->is_loop_header() ? " (loop header)" : "");
   __ bind(label->label());
   current_block_ = label->block_id();
   DoGap(label);
 }
 
 
 void LCodeGen::DoParallelMove(LParallelMove* move) {
   resolver_.Resolve(move);
 }
 
@@ skipping 4719 matching lines @@
                                FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64