Fix --trace-ic position information for LoadICs and StoreICs in optimized code

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/352663002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22008 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen.cc

@@ -6512,6 +6512,7 @@ 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);
@@ -7213,6 +7214,8 @@ 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()));