Use ir_rvalue::variable_referenced instead of open coding it
diff --git a/ir_dead_code.cpp b/ir_dead_code.cpp
index 20b791e..aa8ebf8 100644
--- a/ir_dead_code.cpp
+++ b/ir_dead_code.cpp
@@ -146,28 +146,8 @@
ir_visitor_status
ir_dead_code_visitor::visit_leave(ir_assignment *ir)
{
- ir_instruction *lhs = ir->lhs;
-
- /* Walk through the LHS and mark references for variables used in
- * array indices but not for the assignment dereference.
- */
- while (lhs) {
- if (lhs->as_variable())
- break;
-
- ir_dereference *deref = lhs->as_dereference();
- if (deref) {
- lhs = deref->var;
- } else {
- ir_swizzle *swiz = lhs->as_swizzle();
-
- lhs = swiz->val;
- }
- }
-
-
variable_entry *entry;
- entry = this->get_variable_entry(lhs->as_variable());
+ entry = this->get_variable_entry(ir->lhs->variable_referenced());
if (entry) {
entry->assigned_count++;
if (entry->assign == NULL)