User account creation filtered due to spam.
collect_insn_data is supposed to figure out the max number of constraints, but
doesn't look at the constraints of match_scratch (only match_operand).
Though match_scratch is unlikely to be the only specified constraint in a
pattern (and so unlikely to affect any target), it's nevertheless a bug.
Date: Tue Dec 15 14:34:01 2015
New Revision: 231654
* gensupport.c (collect_insn_data): Look for number of alternatives