68 lines
1.7 KiB
Factor
68 lines
1.7 KiB
Factor
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! Copyright (C) 2004, 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: inference
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USING: generic hashtables kernel sequences words ;
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! Method inlining optimization
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: min-class? ( class seq -- ? )
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#! Is this class the smallest class in the sequence?
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2dup member? [
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[ dupd class-and ] map
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[ null = not ] subset
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[ class< ] all-with?
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] [
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2drop f
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] ifte ;
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: node-dispatching-class ( node -- class )
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dup node-in-d peek dup value-safe? [
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swap node-classes ?hash
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] [
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2drop object
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] ifte ;
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: inline-method? ( #call -- ? )
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dup node-param "picker" word-prop [ dup ] = [
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dup node-dispatching-class dup [
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swap node-param order min-class?
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] [
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2drop f
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] ifte
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] [
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drop f
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] ifte ;
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: subst-node ( old new -- )
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last-node set-node-successor ;
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: inline-method ( node -- node )
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dup node-dispatching-class
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over node-param "methods" word-prop hash
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over node-in-d dataflow-with
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[ subst-node ] keep ;
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M: #call optimize-node* ( node -- node/t )
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dup node-param [
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dup inline-method? [
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inline-method
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] [
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dup optimize-not? [
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node-successor dup flip-branches
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] [
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drop t
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] ifte
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] ifte
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] [
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node-successor
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] ifte ;
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: post-inline ( #return #call -- node )
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[ >r node-in-d r> node-out-d ] keep
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node-successor [ subst-values ] keep ;
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M: #return optimize-node* ( node -- node/t )
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#! A #return followed by another node is a result of
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#! method inlining. Do a value substitution and drop both
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#! nodes.
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dup node-successor dup [ post-inline ] [ 2drop t ] ifte ;
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