s390.c (override_options): Default max-unrolled-insns to 100 for z10 tuning.

2009-07-24  Andreas Krebbel  <krebbel1@de.ibm.com>
	
	* config/s390/s390.c (override_options): Default
	max-unrolled-insns to 100 for z10 tuning.

From-SVN: r150051

gcc/ChangeLog

+2009-07-24  Andreas Krebbel  <krebbel1@de.ibm.com>
+	
+	* config/s390/s390.c (override_options): Default
+	max-unrolled-insns to 100 for z10 tuning.
+
 2009-07-24  Tobias Grosser  <grosser@fim.uni-passau.de>
 
 	* Makefile.in (TREE_DATA_REF_H, tree-vrp.o, tree-cfg.o, tree-if-conv.o

gcc/config/s390/s390.c

@@ -52,6 +52,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "optabs.h"
 #include "gimple.h"
 #include "df.h"
+#include "params.h"
 
 
 /* Define the specific costs for a given cpu.  */
@@ -1627,6 +1628,10 @@ override_options (void)
   if (!(target_flags_explicit & MASK_LONG_DOUBLE_128))
     target_flags |= MASK_LONG_DOUBLE_128;
 #endif
+
+  if (s390_tune == PROCESSOR_2097_Z10
+      && !PARAM_SET_P (PARAM_MAX_UNROLLED_INSNS))
+    set_param_value ("max-unrolled-insns", 100);
 }
 
 /* Map for smallest class containing reg regno.  */