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* config/s390/s390-modes.def (CCL3mode): New machine mode.
* config/s390/s390.c (s390_match_ccmode_set): Support CCL3mode.
(s390_alc_comparison, s390_slb_comparison): Likewise.
(s390_branch_condition_mask): Likewise.
* config/s390/s390.md ("*subdi3_cc2", "*subdi3_cconly2"): New.
("*subsi3_cc2", "*subsi3_cconly2"): New.
* config/s390/s390.h (PREDICATE_CODE): Accept SIGN_EXTEND and
ZERO_EXTEND for s390_alc_comparison and s390_slb_comparison.
* config/s390/s390.c (s390_alc_comparison, s390_slb_comparison):
Handle SIGN_EXTEND and ZERO_EXTEND.
* config/s390/s390-protos.h (s390_expand_addcc): New prototype.
* config/s390/s390.c (s390_expand_addcc): New function.
* config/s390/s390.md ("adddicc", "addsicc"): New expanders.
("*sconddi", "*scondsi", "*sconddi_neg", "*scondsi_neg"): New insns.
("sltu", "sgtu", "sleu", "sgeu"): New expanders.
From-SVN: r83287
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