2817.md (z196_crack): Add z196_g3 as possible slot.

2010-11-26  Christian Borntraeger  <borntraeger@de.ibm.com>

	* config/s390/2817.md (z196_crack): Add z196_g3 as possible slot.

From-SVN: r167174

gcc/ChangeLog

+2010-11-26  Christian Borntraeger  <borntraeger@de.ibm.com>
+
+	* config/s390/2817.md (z196_crack): Add z196_g3 as possible slot.
+
 2010-11-26  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/46664

gcc/config/s390/2817.md

@@ -40,8 +40,10 @@
 (define_reservation "z196_simple" "( z196_g1 | z196_g2 | z196_g3 )")
 (define_reservation "z196_ends" "( z196_g3 | ( z196_g2 + z196_g3 ) | ( z196_g1 + z196_g2 + z196_g3 ) )")
 
-;; Try to keep cracked and alone ops together in a clump.
-(define_reservation "z196_crack"  "( z196_cr1 | z196_cr2 | z196_cr3 )")
+;; Try to keep cracked and alone insns together in a clump.  This will also
+;; improve the clumping of "normal" insns.  We also allow crackes insns
+;; to go as a last instruction together with normal ones.
+(define_reservation "z196_crack"  "( z196_cr1 | z196_cr2 | z196_cr3 | z196_g3)")
 (define_reservation "z196_alone"  "( z196_cr1 | z196_cr2 | z196_cr3 )")
 
 ;; Most simple instruction a fast enough to be handled by OOO even with