Better fix for --trace-ic source positions: Use HOptimizedGraphBuilderWithPositions

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index d4ea58084f4037c4dd2e17f0c14300a2b0f89bdf..339e0d3a8aba3297551cefdabb6e799b63201e1a 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -6512,7 +6512,6 @@ void HOptimizedGraphBuilder::VisitAssignment(Assignment* expr) {
   ASSERT(!HasStackOverflow());
   ASSERT(current_block() != NULL);
   ASSERT(current_block()->HasPredecessor());
-  if (!FLAG_hydrogen_track_positions) SetSourcePosition(expr->position());
   VariableProxy* proxy = expr->target()->AsVariableProxy();
   Property* prop = expr->target()->AsProperty();
   ASSERT(proxy == NULL || prop == NULL);
@@ -7214,8 +7213,6 @@ void HOptimizedGraphBuilder::VisitProperty(Property* expr) {
   ASSERT(current_block() != NULL);
   ASSERT(current_block()->HasPredecessor());
 
-  if (!FLAG_hydrogen_track_positions) SetSourcePosition(expr->position());
-
   if (TryArgumentsAccess(expr)) return;
 
   CHECK_ALIVE(VisitForValue(expr->obj()));