Remove Haifa support.

From-SVN: r12441

gcc/config/rs6000/rs6000.h

@@ -441,38 +441,6 @@ struct rs6000_cpu_select
 
 extern struct rs6000_cpu_select rs6000_select[];
 
-/* start-sanitize-haifa */
-#ifdef HAIFA
-
-/* Some machines may desire to change what optimizations are
-   performed for various optimization levels.   This macro, if
-   defined, is executed once just after the optimization level is
-   determined and before the remainder of the command options have
-   been parsed.  Values set in this macro are used as the default
-   values for the other command line options.
-
-   LEVEL is the optimization level specified; 2 if `-O2' is
-   specified, 1 if `-O' is specified, and 0 if neither is specified.
-
-   You should not use this macro to change options that are not
-   machine-specific.  These should uniformly selected by the same
-   optimization level on all supported machines.  Use this macro to
-   enable machbine-specific optimizations.
-
-   *Do not examine `write_symbols' in this macro!* The debugging
-   options are not supposed to alter the generated code.
-
-   AIX maps in page 0, so that we can safely do speculative loads */
-
-#define OPTIMIZATION_OPTIONS(LEVEL)					\
-do {									\
-  if (TARGET_AIX && (LEVEL) >= 2) {					\
-    flag_schedule_speculative_load = 1;					\
-  }									\
-} while (0)
-
-#endif	/* HAIFA */
-/* end-sanitize-haifa */
 
 /* Sometimes certain combinations of command options do not make sense
    on a particular target machine.  You can define a macro