Like in other files, since defaults.h ensures that it is always defined. Tested on i586-suse-linux, applied on the mainline.
2011-06-30 Eric Botcazou <ebotca...@adacore.com> * df-scan.c (df_get_entry_block_def_set): Use INCOMING_REGNO macro unconditionally. -- Eric Botcazou
Index: df-scan.c =================================================================== --- df-scan.c (revision 175621) +++ df-scan.c (working copy) @@ -3733,14 +3733,8 @@ df_get_entry_block_def_set (bitmap entry bitmap_clear (entry_block_defs); for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - { - if (FUNCTION_ARG_REGNO_P (i)) -#ifdef INCOMING_REGNO - bitmap_set_bit (entry_block_defs, INCOMING_REGNO (i)); -#else - bitmap_set_bit (entry_block_defs, i); -#endif - } + if (FUNCTION_ARG_REGNO_P (i)) + bitmap_set_bit (entry_block_defs, INCOMING_REGNO (i)); /* The always important stack pointer. */ bitmap_set_bit (entry_block_defs, STACK_POINTER_REGNUM);