s390.c (regclass_map): Put reg 33 (cc) to CC_REGS group.

s390.c (regclass_map): Put reg 33 (cc) to CC_REGS group.

2004-11-01  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390.c (regclass_map): Put reg 33 (cc) to CC_REGS group.
	(s390_secondary_input_reload_class)
	(s390_secondary_output_reload_class): Use GENERAL_REGS to reload a cc
	register.
	(s390_expand_cmpmem): Enable cmpmem implementation.
	* config/s390/s390.h (reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS):
	Added three new classes: CC_REGS, ADDR_CC_REGS, GENERAL_CC_REGS.
	(REG_CLASS_FROM_LETTER): New constraint 'c' added.
	* config/s390/s390.md ("movcc"): New insn pattern.
	* doc/md.texi: Document 'c' constraint for s390.

From-SVN: r89953