[interpreter] Rename HandlerTable::depth field.

src/compiler/bytecode-graph-builder.cc

 // Copyright 2015 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/bytecode-graph-builder.h"
 
 #include "src/compiler/bytecode-branch-analysis.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/operator-properties.h"
 #include "src/interpreter/bytecodes.h"
@@ skipping 1659 matching lines @@
     if (current_offset < current_end) break;  // Still covered by range.
     exception_handlers_.pop();
   }
 
   // Potentially enter exception handlers.
   while (current_exception_handler_ < num_entries) {
     int next_start = table->GetRangeStart(current_exception_handler_);
     if (current_offset < next_start) break;  // Not yet covered by range.
     int next_end = table->GetRangeEnd(current_exception_handler_);
     int next_handler = table->GetRangeHandler(current_exception_handler_);
-    // TODO(mstarzinger): We are hijacking the "depth" field in the exception
-    // handler table to hold the context register. We should rename the field.
-    int context_register = table->GetRangeDepth(current_exception_handler_);
+    int context_register = table->GetRangeData(current_exception_handler_);
     exception_handlers_.push(
         {next_start, next_end, next_handler, context_register});
     current_exception_handler_++;
   }
 }
 
 Node* BytecodeGraphBuilder::MakeNode(const Operator* op, int value_input_count,
                                      Node** value_inputs, bool incomplete) {
   DCHECK_EQ(op->ValueInputCount(), value_input_count);
 
@@ skipping 144 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8