Repeat the optimization passes until we stop making progress.

glsl_parser_extras.cpp

@@ -754,11 +754,16 @@ main(int argc, char **argv)
 
    /* Optimization passes */
    if (!state.error) {
-      do_function_inlining(&instructions);
+      bool progress;
+      do {
+	 progress = false;
 
-      /* Constant folding */
-      ir_constant_folding_visitor constant_folding;
-      visit_exec_list(&instructions, &constant_folding);
+	 progress = do_function_inlining(&instructions) || progress;
+
+	 /* Constant folding */
+	 ir_constant_folding_visitor constant_folding;
+	 visit_exec_list(&instructions, &constant_folding);
+      } while (progress);
    }
 
    /* Print out the resulting IR */

ir_function_inlining.cpp

@@ -307,7 +307,7 @@ can_inline(ir_call *call)
 bool
 do_function_inlining(exec_list *instructions)
 {
-   bool progress;
+   bool progress = false;
 
    foreach_iter(exec_list_iterator, iter, *instructions) {
       ir_instruction *ir = (ir_instruction *)iter.get();