Perform constant folding on array indices.

Replaces a constant var deref with a constant value in CorrectParse1.frag.
2010-04-06 11:11:05 -07:00
parent af18641f0a
commit bae5be356e
1 changed files with 8 additions and 1 deletions
@@ -88,7 +88,14 @@ ir_constant_folding_visitor::visit(ir_swizzle *ir)
 void
 ir_constant_folding_visitor::visit(ir_dereference *ir)
 {
-   (void) ir;
+   if (ir->mode == ir_dereference::ir_reference_array) {
+      ir_constant *const_val = ir->selector.array_index->constant_expression_value();
+      if (const_val)
+	 ir->selector.array_index = const_val;
+      else
+	 ir->selector.array_index->accept(this);
+   }
+   ir->var->accept(this);
 }