128 lines
4.0 KiB
Factor
128 lines
4.0 KiB
Factor
! Copyright (C) 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors combinators combinators.short-circuit
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compiler.cfg.hats compiler.cfg.instructions
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compiler.cfg.utilities compiler.cfg.value-numbering.graph
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compiler.cfg.value-numbering.math
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compiler.cfg.value-numbering.rewrite cpu.architecture fry kernel
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make math sequences ;
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IN: compiler.cfg.value-numbering.alien
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M: ##box-displaced-alien rewrite
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dup displacement>> vreg>insn zero-insn?
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[ [ dst>> ] [ base>> ] bi <copy> ] [ drop f ] if ;
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! ##box-displaced-alien f 1 2 3 <class>
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! ##unbox-c-ptr 4 1 <class>
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! =>
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! ##box-displaced-alien f 1 2 3 <class>
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! ##unbox-c-ptr 5 3 <class>
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! ##add 4 5 2
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: rewrite-unbox-alien ( insn box-insn -- insn )
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[ dst>> ] [ src>> ] bi* <copy> ;
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: rewrite-unbox-displaced-alien ( insn box-insn -- insns )
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[
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[ dst>> ]
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[ [ base>> ] [ base-class>> ] [ displacement>> ] tri ] bi*
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[ ^^unbox-c-ptr ] dip
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##add,
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] { } make ;
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: rewrite-unbox-any-c-ptr ( insn -- insn/f )
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dup src>> vreg>insn
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{
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{ [ dup ##box-alien? ] [ rewrite-unbox-alien ] }
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{ [ dup ##box-displaced-alien? ] [ rewrite-unbox-displaced-alien ] }
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[ 2drop f ]
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} cond ;
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M: ##unbox-any-c-ptr rewrite rewrite-unbox-any-c-ptr ;
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M: ##unbox-alien rewrite rewrite-unbox-any-c-ptr ;
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! Fuse ##add-imm into ##load-memory(-imm) and ##store-memory(-imm)
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! just update the offset in the instruction
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: fuse-base-offset? ( insn -- ? )
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base>> vreg>insn ##add-imm? ;
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: fuse-base-offset ( insn -- insn' )
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dup base>> vreg>insn
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[ src1>> ] [ src2>> ] bi
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[ >>base ] [ '[ _ + ] change-offset ] bi* ;
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! Fuse ##add-imm into ##load-memory and ##store-memory
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! just update the offset in the instruction
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: fuse-displacement-offset? ( insn -- ? )
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{ [ scale>> 0 = ] [ displacement>> vreg>insn ##add-imm? ] } 1&& ;
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: fuse-displacement-offset ( insn -- insn' )
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dup displacement>> vreg>insn
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[ src1>> ] [ src2>> ] bi
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[ >>displacement ] [ '[ _ + ] change-offset ] bi* ;
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! Fuse ##add into ##load-memory-imm and ##store-memory-imm
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! construct a new ##load-memory or ##store-memory with the
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! ##add's operand as the displacement
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: fuse-displacement? ( insn -- ? )
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{
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[ offset>> 0 = complex-addressing? or ]
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[ base>> vreg>insn ##add? ]
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} 1&& ;
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GENERIC: alien-insn-value ( insn -- value )
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M: ##load-memory-imm alien-insn-value dst>> ;
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M: ##store-memory-imm alien-insn-value src>> ;
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GENERIC: new-alien-insn ( value base displacement scale offset rep c-type insn -- insn )
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M: ##load-memory-imm new-alien-insn drop ##load-memory new-insn ;
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M: ##store-memory-imm new-alien-insn drop ##store-memory new-insn ;
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: fuse-displacement ( insn -- insn' )
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{
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[ alien-insn-value ]
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[ base>> vreg>insn [ src1>> ] [ src2>> ] bi ]
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[ drop 0 ]
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[ offset>> ]
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[ rep>> ]
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[ c-type>> ]
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[ ]
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} cleave new-alien-insn ;
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! Fuse ##shl-imm into ##load-memory or ##store-memory
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: scale-insn? ( insn -- ? )
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{ [ ##shl-imm? ] [ src2>> { 1 2 3 } member? ] } 1&& ;
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: fuse-scale? ( insn -- ? )
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{ [ scale>> 0 = ] [ displacement>> vreg>insn scale-insn? ] } 1&& ;
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: fuse-scale ( insn -- insn' )
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dup displacement>> vreg>insn
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[ src1>> ] [ src2>> ] bi
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[ >>displacement ] [ >>scale ] bi* ;
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: rewrite-memory-op ( insn -- insn/f )
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complex-addressing? [
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{
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{ [ dup fuse-base-offset? ] [ fuse-base-offset ] }
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{ [ dup fuse-displacement-offset? ] [ fuse-displacement-offset ] }
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{ [ dup fuse-scale? ] [ fuse-scale ] }
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[ drop f ]
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} cond
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] [ drop f ] if ;
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: rewrite-memory-imm-op ( insn -- insn/f )
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{
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{ [ dup fuse-base-offset? ] [ fuse-base-offset ] }
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{ [ dup fuse-displacement? ] [ fuse-displacement ] }
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[ drop f ]
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} cond ;
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M: ##load-memory rewrite rewrite-memory-op ;
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M: ##load-memory-imm rewrite rewrite-memory-imm-op ;
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M: ##store-memory rewrite rewrite-memory-op ;
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M: ##store-memory-imm rewrite rewrite-memory-imm-op ;
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