kill-index ( vreg bb -- n )


Vocabulary
compiler.cfg.ssa.interference.live-ranges

Inputs
vregan object
bban object


Outputs
nan object


Definition
USING: assocs compiler.cfg.liveness
compiler.cfg.ssa.interference.live-ranges.private kernel
namespaces ;

IN: compiler.cfg.ssa.interference.live-ranges

: kill-index ( vreg bb -- n )
2dup live-out?
[ 2drop 1/0. ] [
2dup kill-indices get at at*
[ 2nip ] [
drop 2dup live-in?
[ bad-kill-index ] [ 2drop -1/0. ] if
] if
] if ;