-/** There are two implementations of the Phi node construction. The first
- is faster, but does not work for blocks with more than 2 predecessors.
- The second works always but is slower and causes more unnecessary Phi
- nodes.
- Select the implementations by the following preprocessor flag: */
-#define USE_FAST_PHI_CONSTRUCTION 0
-
-/** Further there are two versions of the fast Phi node construction.
- If the following flag is set, new_r_Phi_in uses an explicit stack for
- allocating and deallocating Phi nodes. Else it uses the obstack
- as a stack! */
-#define USE_EXPLICIT_PHI_IN_STACK 0
-
-/*
- * If this is defined debuging aids are created, e.g. a field in
- * ir_node uniquely numbering the nodes.
- * #define DEBUG_libfirm 1
- * This is now set by the configure script as an option.
- */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-