Uniform and precise source positions for inlining

src/crankshaft/hydrogen-representation-changes.cc

 // Copyright 2013 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/crankshaft/hydrogen-representation-changes.h"
 
 namespace v8 {
 namespace internal {
 
 void HRepresentationChangesPhase::InsertRepresentationChangeForUse(
@@ skipping 23 matching lines @@
       if (res.IsJust()) new_value = res.FromJust();
     } else {
       new_value = constant->CopyToRepresentation(to, graph()->zone());
     }
   }
 
   if (new_value == NULL) {
     new_value = new (graph()->zone())
         HChange(value, to, is_truncating_to_smi, is_truncating_to_int,
                 is_truncating_to_number);
-    if (!use_value->operand_position(use_index).IsUnknown()) {
-      new_value->set_position(use_value->operand_position(use_index));
-    } else {
-      DCHECK(!FLAG_hydrogen_track_positions ||
-             !graph()->info()->IsOptimizing());
-    }
   }
 
   new_value->InsertBefore(next);
   use_value->SetOperandAt(use_index, new_value);
 }
 
 
 static bool IsNonDeoptingIntToSmiChange(HChange* change) {
   Representation from_rep = change->from();
   Representation to_rep = change->to();
@@ skipping 181 matching lines @@
     for (HInstruction* current = block->first(); current != NULL; ) {
       HInstruction* next = current->next();
       InsertRepresentationChangesForValue(current);
       current = next;
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8