egcs/./gcc ChangeLog regmove.c recog.c recog.h

[Jeffrey A. Law]

CVSROOT:	/egcs/carton/cvsfiles
Module name:	egcs
Changes by:	law@egcs.cygnus.com	98/08/22 23:21:25

Modified files:
	gcc            : ChangeLog regmove.c recog.c recog.h 

Log message:
	* recog.c (validate_replace_rtx_group): New function.
	* recog.h (validate_replace_rtx_group): Declare it.
	* regmove.c (optimize_reg_copy_3): If any substitution fails, then undo
	the entire group of substitutions.