another bit of debug code
diff --git a/src/mesa/shader/prog_execute.c b/src/mesa/shader/prog_execute.c
index 013d65c..356d4ce 100644
--- a/src/mesa/shader/prog_execute.c
+++ b/src/mesa/shader/prog_execute.c
@@ -933,6 +933,9 @@
             else {
                cond = eval_condition(machine, inst);
             }
+            if (DEBUG_PROG) {
+               printf("IF: %d\n", cond);
+            }
             /* do if/else */
             if (cond) {
                /* do if-clause (just continue execution) */