factor/basis/compiler/cfg/build-stack-frame/build-stack-frame.factor

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1.5 KiB
Factor

! Copyright (C) 2008, 2010 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: namespaces accessors math.order assocs kernel sequences
combinators classes words cpu.architecture layouts compiler.cfg
compiler.cfg.rpo compiler.cfg.instructions
compiler.cfg.registers compiler.cfg.stack-frame ;
IN: compiler.cfg.build-stack-frame
SYMBOL: frame-required?
GENERIC: compute-stack-frame* ( insn -- )
: request-stack-frame ( stack-frame -- )
frame-required? on
stack-frame [ max-stack-frame ] change ;
UNION: stack-frame-insn
##alien-invoke
##alien-indirect
##alien-assembly
##alien-callback ;
M: stack-frame-insn compute-stack-frame*
stack-frame>> request-stack-frame ;
M: ##call compute-stack-frame* drop frame-required? on ;
M: ##call-gc compute-stack-frame*
drop
frame-required? on
stack-frame new t >>calls-vm? request-stack-frame ;
M: insn compute-stack-frame*
class "frame-required?" word-prop
[ frame-required? on ] when ;
: initial-stack-frame ( -- stack-frame )
stack-frame new cfg get spill-area-size>> >>spill-area-size ;
: compute-stack-frame ( insns -- )
frame-required? off
initial-stack-frame stack-frame set
[ instructions>> [ compute-stack-frame* ] each ] each-basic-block
stack-frame get dup stack-frame-size >>total-size drop ;
: build-stack-frame ( cfg -- cfg )
[
[ compute-stack-frame ]
[
frame-required? get stack-frame get f ?
>>stack-frame
] bi
] with-scope ;