39 lines
1.0 KiB
Factor
39 lines
1.0 KiB
Factor
! Copyright (C) 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors combinators.short-circuit
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compiler.cfg.instructions compiler.cfg.registers
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compiler.cfg.rpo cpu.architecture kernel sequences vectors ;
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IN: compiler.cfg.save-contexts
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! Insert context saves.
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: needs-save-context? ( insns -- ? )
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[
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{
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[ ##unary-float-function? ]
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[ ##binary-float-function? ]
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[ ##alien-invoke? ]
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[ ##alien-indirect? ]
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} 1||
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] any? ;
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: needs-callback-context? ( insns -- ? )
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[
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{
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[ ##alien-invoke? ]
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[ ##alien-indirect? ]
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} 1||
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] any? ;
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: insert-save-context ( bb -- )
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dup instructions>> dup needs-save-context? [
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int-rep next-vreg-rep
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int-rep next-vreg-rep
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pick needs-callback-context?
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\ ##save-context new-insn prefix
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>>instructions drop
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] [ 2drop ] if ;
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: insert-save-contexts ( cfg -- cfg' )
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dup [ insert-save-context ] each-basic-block ;
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