compiler: new inline intrinsic for <displaced-alien> where the inputs have known types; value numbering now eliminates unnecessary allocation of displaced aliens if the result is immediately unboxed again
parent
64990eb23d
commit
f662e6403a
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@ -21,6 +21,7 @@ M: ##slot temp-vregs temp>> 1array ;
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M: ##set-slot temp-vregs temp>> 1array ;
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M: ##set-slot temp-vregs temp>> 1array ;
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M: ##string-nth temp-vregs temp>> 1array ;
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M: ##string-nth temp-vregs temp>> 1array ;
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M: ##set-string-nth-fast temp-vregs temp>> 1array ;
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M: ##set-string-nth-fast temp-vregs temp>> 1array ;
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M: ##box-displaced-alien temp-vregs temp>> 1array ;
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M: ##compare temp-vregs temp>> 1array ;
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M: ##compare temp-vregs temp>> 1array ;
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M: ##compare-imm temp-vregs temp>> 1array ;
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M: ##compare-imm temp-vregs temp>> 1array ;
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M: ##compare-float temp-vregs temp>> 1array ;
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M: ##compare-float temp-vregs temp>> 1array ;
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@ -51,6 +51,7 @@ IN: compiler.cfg.hats
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: ^^allot-array ( n -- dst ) 2 + cells array ^^allot ; inline
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: ^^allot-array ( n -- dst ) 2 + cells array ^^allot ; inline
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: ^^allot-byte-array ( n -- dst ) 2 cells + byte-array ^^allot ; inline
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: ^^allot-byte-array ( n -- dst ) 2 cells + byte-array ^^allot ; inline
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: ^^box-alien ( src -- dst ) ^^r1 next-vreg ##box-alien ; inline
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: ^^box-alien ( src -- dst ) ^^r1 next-vreg ##box-alien ; inline
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: ^^box-displaced-alien ( base displacement -- dst ) ^^r2 next-vreg ##box-displaced-alien ; inline
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: ^^unbox-alien ( src -- dst ) ^^r1 ##unbox-alien ; inline
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: ^^unbox-alien ( src -- dst ) ^^r1 ##unbox-alien ; inline
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: ^^unbox-c-ptr ( src class -- dst ) ^^r2 next-vreg ##unbox-c-ptr ;
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: ^^unbox-c-ptr ( src class -- dst ) ^^r2 next-vreg ##unbox-c-ptr ;
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: ^^alien-unsigned-1 ( src -- dst ) ^^r1 ##alien-unsigned-1 ; inline
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: ^^alien-unsigned-1 ( src -- dst ) ^^r1 ##alien-unsigned-1 ; inline
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@ -118,6 +118,7 @@ INSN: ##unbox-float < ##unary ;
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INSN: ##unbox-any-c-ptr < ##unary/temp ;
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INSN: ##unbox-any-c-ptr < ##unary/temp ;
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INSN: ##box-float < ##unary/temp ;
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INSN: ##box-float < ##unary/temp ;
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INSN: ##box-alien < ##unary/temp ;
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INSN: ##box-alien < ##unary/temp ;
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INSN: ##box-displaced-alien < ##binary temp ;
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: ##unbox-f ( dst src -- ) drop 0 ##load-immediate ;
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: ##unbox-f ( dst src -- ) drop 0 ##load-immediate ;
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: ##unbox-byte-array ( dst src -- ) byte-array-offset ##add-imm ;
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: ##unbox-byte-array ( dst src -- ) byte-array-offset ##add-imm ;
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@ -1,11 +1,24 @@
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! Copyright (C) 2008, 2009 Slava Pestov.
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! Copyright (C) 2008, 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors kernel sequences alien math classes.algebra fry
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USING: accessors kernel sequences alien math classes.algebra fry
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locals combinators cpu.architecture compiler.tree.propagation.info
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locals combinators combinators.short-circuit cpu.architecture
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compiler.cfg.hats compiler.cfg.stacks compiler.cfg.instructions
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compiler.tree.propagation.info compiler.cfg.hats
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compiler.cfg.stacks compiler.cfg.instructions
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compiler.cfg.utilities compiler.cfg.builder.blocks ;
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compiler.cfg.utilities compiler.cfg.builder.blocks ;
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IN: compiler.cfg.intrinsics.alien
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IN: compiler.cfg.intrinsics.alien
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: emit-<displaced-alien>? ( node -- ? )
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node-input-infos {
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[ first class>> fixnum class<= ]
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[ second class>> c-ptr class<= ]
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} 1&& ;
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: emit-<displaced-alien> ( node -- )
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dup emit-<displaced-alien>?
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[ drop 2inputs [ ^^untag-fixnum ] dip ^^box-displaced-alien ds-push ]
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[ emit-primitive ]
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if ;
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: (prepare-alien-accessor-imm) ( class offset -- offset-vreg )
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: (prepare-alien-accessor-imm) ( class offset -- offset-vreg )
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ds-drop [ ds-pop swap ^^unbox-c-ptr ] dip ^^add-imm ;
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ds-drop [ ds-pop swap ^^unbox-c-ptr ] dip ^^add-imm ;
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@ -10,6 +10,8 @@ compiler.cfg.intrinsics.float
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compiler.cfg.intrinsics.slots
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compiler.cfg.intrinsics.slots
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compiler.cfg.intrinsics.misc
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compiler.cfg.intrinsics.misc
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compiler.cfg.comparisons ;
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compiler.cfg.comparisons ;
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QUALIFIED: alien
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QUALIFIED: alien.accessors
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QUALIFIED: kernel
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QUALIFIED: kernel
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QUALIFIED: arrays
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QUALIFIED: arrays
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QUALIFIED: byte-arrays
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QUALIFIED: byte-arrays
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@ -20,7 +22,6 @@ QUALIFIED: classes.tuple.private
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QUALIFIED: math.private
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QUALIFIED: math.private
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QUALIFIED: math.integers.private
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QUALIFIED: math.integers.private
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QUALIFIED: math.libm
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QUALIFIED: math.libm
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QUALIFIED: alien.accessors
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IN: compiler.cfg.intrinsics
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IN: compiler.cfg.intrinsics
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{
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{
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@ -54,6 +55,7 @@ IN: compiler.cfg.intrinsics
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byte-arrays:<byte-array>
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byte-arrays:<byte-array>
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byte-arrays:(byte-array)
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byte-arrays:(byte-array)
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kernel:<wrapper>
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kernel:<wrapper>
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alien:<displaced-alien>
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alien.accessors:alien-unsigned-1
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alien.accessors:alien-unsigned-1
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alien.accessors:set-alien-unsigned-1
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alien.accessors:set-alien-unsigned-1
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alien.accessors:alien-signed-1
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alien.accessors:alien-signed-1
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@ -144,6 +146,7 @@ IN: compiler.cfg.intrinsics
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{ \ byte-arrays:<byte-array> [ emit-<byte-array> ] }
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{ \ byte-arrays:<byte-array> [ emit-<byte-array> ] }
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{ \ byte-arrays:(byte-array) [ emit-(byte-array) ] }
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{ \ byte-arrays:(byte-array) [ emit-(byte-array) ] }
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{ \ kernel:<wrapper> [ emit-simple-allot ] }
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{ \ kernel:<wrapper> [ emit-simple-allot ] }
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{ \ alien:<displaced-alien> [ emit-<displaced-alien> ] }
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{ \ alien.accessors:alien-unsigned-1 [ 1 emit-alien-unsigned-getter ] }
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{ \ alien.accessors:alien-unsigned-1 [ 1 emit-alien-unsigned-getter ] }
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{ \ alien.accessors:set-alien-unsigned-1 [ 1 emit-alien-integer-setter ] }
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{ \ alien.accessors:set-alien-unsigned-1 [ 1 emit-alien-integer-setter ] }
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{ \ alien.accessors:alien-signed-1 [ 1 emit-alien-signed-getter ] }
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{ \ alien.accessors:alien-signed-1 [ 1 emit-alien-signed-getter ] }
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@ -140,6 +140,9 @@ M: ##string-nth rename-insn-temps
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M: ##set-string-nth-fast rename-insn-temps
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M: ##set-string-nth-fast rename-insn-temps
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TEMP-QUOT change-temp drop ;
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TEMP-QUOT change-temp drop ;
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M: ##box-displaced-alien rename-insn-temps
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TEMP-QUOT change-temp drop ;
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M: ##compare rename-insn-temps
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M: ##compare rename-insn-temps
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TEMP-QUOT change-temp drop ;
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TEMP-QUOT change-temp drop ;
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@ -25,6 +25,7 @@ M: ##slot temp-vreg-reps drop { int-rep } ;
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M: ##set-slot temp-vreg-reps drop { int-rep } ;
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M: ##set-slot temp-vreg-reps drop { int-rep } ;
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M: ##string-nth temp-vreg-reps drop { int-rep } ;
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M: ##string-nth temp-vreg-reps drop { int-rep } ;
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M: ##set-string-nth-fast temp-vreg-reps drop { int-rep } ;
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M: ##set-string-nth-fast temp-vreg-reps drop { int-rep } ;
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M: ##box-displaced-alien temp-vreg-reps drop { int-rep } ;
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M: ##compare temp-vreg-reps drop { int-rep } ;
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M: ##compare temp-vreg-reps drop { int-rep } ;
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M: ##compare-imm temp-vreg-reps drop { int-rep } ;
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M: ##compare-imm temp-vreg-reps drop { int-rep } ;
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M: ##compare-float temp-vreg-reps drop { int-rep } ;
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M: ##compare-float temp-vreg-reps drop { int-rep } ;
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@ -2,7 +2,7 @@
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! See http://factorcode.org/license.txt for BSD license.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors combinators combinators.short-circuit arrays
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USING: accessors combinators combinators.short-circuit arrays
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fry kernel layouts math namespaces sequences cpu.architecture
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fry kernel layouts math namespaces sequences cpu.architecture
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math.bitwise math.order classes vectors
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math.bitwise math.order classes vectors locals make
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compiler.cfg
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compiler.cfg
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compiler.cfg.registers
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compiler.cfg.registers
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compiler.cfg.comparisons
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compiler.cfg.comparisons
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@ -350,3 +350,24 @@ M: ##shl rewrite \ ##shl-imm rewrite-arithmetic ;
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M: ##shr rewrite \ ##shr-imm rewrite-arithmetic ;
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M: ##shr rewrite \ ##shr-imm rewrite-arithmetic ;
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M: ##sar rewrite \ ##sar-imm rewrite-arithmetic ;
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M: ##sar rewrite \ ##sar-imm rewrite-arithmetic ;
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: box-displaced-alien? ( expr -- ? )
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op>> \ ##box-displaced-alien eq? ;
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! ##box-displaced-alien f 1 2 3
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! ##unbox-any-c-ptr 4 1
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! =>
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! ##box-displaced-alien f 1 2 3
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! ##unbox-any-c-ptr 5 3
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! ##add 4 5 2
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:: rewrite-unbox-displaced-alien ( insn expr -- insns )
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[
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next-vreg :> temp
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temp expr in2>> vn>vreg insn temp>> ##unbox-any-c-ptr
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insn dst>> temp expr in1>> vn>vreg ##add
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] { } make ;
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M: ##unbox-any-c-ptr rewrite
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dup src>> vreg>expr dup box-displaced-alien?
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[ rewrite-unbox-displaced-alien ] [ 2drop f ] if ;
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@ -87,6 +87,12 @@ M: unary-expr simplify*
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[ 2drop f ]
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[ 2drop f ]
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} cond ; inline
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} cond ; inline
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: simplify-box-displaced-alien ( expr -- vn/expr/f )
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>binary-expr< {
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{ [ over expr-zero? ] [ nip ] }
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[ 2drop f ]
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} cond ;
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M: binary-expr simplify*
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M: binary-expr simplify*
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dup op>> {
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dup op>> {
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{ \ ##add [ simplify-add ] }
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{ \ ##add [ simplify-add ] }
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@ -107,6 +113,7 @@ M: binary-expr simplify*
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{ \ ##sar-imm [ simplify-shr ] }
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{ \ ##sar-imm [ simplify-shr ] }
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{ \ ##shl [ simplify-shl ] }
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{ \ ##shl [ simplify-shl ] }
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{ \ ##shl-imm [ simplify-shl ] }
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{ \ ##shl-imm [ simplify-shl ] }
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{ \ ##box-displaced-alien [ simplify-box-displaced-alien ] }
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[ 2drop f ]
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[ 2drop f ]
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} case ;
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} case ;
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@ -870,6 +870,63 @@ cell 8 = [
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] unit-test
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] unit-test
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] when
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] when
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! Displaced alien optimizations
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3 vreg-counter set-global
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[
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{
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T{ ##peek f 0 D 0 }
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T{ ##load-immediate f 2 16 }
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T{ ##box-displaced-alien f 1 2 0 }
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T{ ##unbox-any-c-ptr f 4 0 }
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T{ ##add-imm f 3 4 16 }
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}
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] [
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{
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T{ ##peek f 0 D 0 }
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T{ ##load-immediate f 2 16 }
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T{ ##box-displaced-alien f 1 2 0 }
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T{ ##unbox-any-c-ptr f 3 1 }
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} value-numbering-step
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] unit-test
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4 vreg-counter set-global
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[
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{
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T{ ##box-alien f 0 1 }
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T{ ##load-immediate f 2 16 }
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T{ ##box-displaced-alien f 3 2 0 }
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T{ ##copy f 5 1 any-rep }
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T{ ##add-imm f 4 5 16 }
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}
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] [
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{
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T{ ##box-alien f 0 1 }
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T{ ##load-immediate f 2 16 }
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T{ ##box-displaced-alien f 3 2 0 }
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T{ ##unbox-any-c-ptr f 4 3 }
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} value-numbering-step
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] unit-test
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3 vreg-counter set-global
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[
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{
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T{ ##peek f 0 D 0 }
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T{ ##load-immediate f 2 0 }
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T{ ##copy f 3 0 any-rep }
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T{ ##replace f 3 D 1 }
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}
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] [
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{
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T{ ##peek f 0 D 0 }
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T{ ##load-immediate f 2 0 }
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T{ ##box-displaced-alien f 3 2 0 }
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T{ ##replace f 3 D 1 }
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} value-numbering-step
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] unit-test
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! Branch folding
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! Branch folding
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[
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[
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{
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{
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@ -1301,3 +1358,4 @@ V{
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] unit-test
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] unit-test
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[ f ] [ 1 get instructions>> [ ##peek? ] any? ] unit-test
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[ f ] [ 1 get instructions>> [ ##peek? ] any? ] unit-test
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@ -1,8 +1,9 @@
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! Copyright (C) 2008, 2009 Slava Pestov.
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! Copyright (C) 2008, 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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! See http://factorcode.org/license.txt for BSD license.
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USING: namespaces assocs kernel accessors
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USING: namespaces assocs kernel accessors
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sorting sets sequences
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sorting sets sequences arrays
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cpu.architecture
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cpu.architecture
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sequences.deep
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compiler.cfg
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compiler.cfg
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compiler.cfg.rpo
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compiler.cfg.rpo
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compiler.cfg.instructions
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compiler.cfg.instructions
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dup rewrite
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dup rewrite
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[ process-instruction ] [ ] ?if ;
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[ process-instruction ] [ ] ?if ;
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M: array process-instruction
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[ process-instruction ] map ;
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: value-numbering-step ( insns -- insns' )
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: value-numbering-step ( insns -- insns' )
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init-value-graph
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init-value-graph
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init-expressions
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init-expressions
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[ process-instruction ] map ;
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[ process-instruction ] map flatten ;
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: value-numbering ( cfg -- cfg' )
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: value-numbering ( cfg -- cfg' )
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[ value-numbering-step ] local-optimization
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[ value-numbering-step ] local-optimization
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M: ##copy generate-insn [ dst/src ] [ rep>> ] bi %copy ;
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M: ##copy generate-insn [ dst/src ] [ rep>> ] bi %copy ;
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M: ##unbox-float generate-insn dst/src %unbox-float ;
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M: ##unbox-float generate-insn dst/src %unbox-float ;
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M: ##unbox-any-c-ptr generate-insn dst/src/temp %unbox-any-c-ptr ;
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M: ##unbox-any-c-ptr generate-insn dst/src/temp %unbox-any-c-ptr ;
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M: ##box-float generate-insn dst/src/temp %box-float ;
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M: ##box-float generate-insn dst/src/temp %box-float ;
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M: ##box-alien generate-insn dst/src/temp %box-alien ;
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M: ##box-alien generate-insn dst/src/temp %box-alien ;
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M: ##box-displaced-alien generate-insn
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[ dst/src1/src2 ] [ temp>> ] bi %box-displaced-alien ;
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M: ##alien-unsigned-1 generate-insn dst/src %alien-unsigned-1 ;
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M: ##alien-unsigned-1 generate-insn dst/src %alien-unsigned-1 ;
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M: ##alien-unsigned-2 generate-insn dst/src %alien-unsigned-2 ;
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M: ##alien-unsigned-2 generate-insn dst/src %alien-unsigned-2 ;
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@ -463,6 +463,54 @@ cell 8 = [
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] compile-call
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] compile-call
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] unit-test
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] unit-test
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[ ALIEN: 123 ] [
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123 [ <alien> ] compile-call
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] unit-test
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[ ALIEN: 123 ] [
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123 [ { fixnum } declare <alien> ] compile-call
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] unit-test
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[ ALIEN: 123 ] [
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[ 123 <alien> ] compile-call
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ f ] [
|
||||||
|
0 [ <alien> ] compile-call
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ f ] [
|
||||||
|
0 [ { fixnum } declare <alien> ] compile-call
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ f ] [
|
||||||
|
[ 0 <alien> ] compile-call
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ ALIEN: 321 ] [
|
||||||
|
0 ALIEN: 321 [ <displaced-alien> ] compile-call
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ ALIEN: 321 ] [
|
||||||
|
0 ALIEN: 321 [ { fixnum c-ptr } declare <displaced-alien> ] compile-call
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ ALIEN: 321 ] [
|
||||||
|
ALIEN: 321 [ 0 swap <displaced-alien> ] compile-call
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ B{ 0 1 2 3 4 } ] [
|
||||||
|
2 B{ 0 1 2 3 4 } <displaced-alien>
|
||||||
|
[ 1 swap <displaced-alien> ] compile-call
|
||||||
|
underlying>>
|
||||||
|
] unit-test
|
||||||
|
|
||||||
|
[ B{ 0 1 2 3 4 } ] [
|
||||||
|
2 B{ 0 1 2 3 4 } <displaced-alien>
|
||||||
|
[ 1 swap { c-ptr } declare <displaced-alien> ] compile-call
|
||||||
|
underlying>>
|
||||||
|
] unit-test
|
||||||
|
|
||||||
[
|
[
|
||||||
B{ 0 0 0 0 } [ { byte-array } declare <void*> ] compile-call
|
B{ 0 0 0 0 } [ { byte-array } declare <void*> ] compile-call
|
||||||
] must-fail
|
] must-fail
|
||||||
|
|
|
@ -120,6 +120,7 @@ HOOK: %unbox-float cpu ( dst src -- )
|
||||||
HOOK: %unbox-any-c-ptr cpu ( dst src temp -- )
|
HOOK: %unbox-any-c-ptr cpu ( dst src temp -- )
|
||||||
HOOK: %box-float cpu ( dst src temp -- )
|
HOOK: %box-float cpu ( dst src temp -- )
|
||||||
HOOK: %box-alien cpu ( dst src temp -- )
|
HOOK: %box-alien cpu ( dst src temp -- )
|
||||||
|
HOOK: %box-displaced-alien cpu ( dst displacement base temp -- )
|
||||||
|
|
||||||
HOOK: %alien-unsigned-1 cpu ( dst src -- )
|
HOOK: %alien-unsigned-1 cpu ( dst src -- )
|
||||||
HOOK: %alien-unsigned-2 cpu ( dst src -- )
|
HOOK: %alien-unsigned-2 cpu ( dst src -- )
|
||||||
|
|
|
@ -315,23 +315,50 @@ M:: ppc %unbox-any-c-ptr ( dst src temp -- )
|
||||||
|
|
||||||
: alien@ ( n -- n' ) cells object tag-number - ;
|
: alien@ ( n -- n' ) cells object tag-number - ;
|
||||||
|
|
||||||
|
:: %allot-alien ( dst base displacement temp -- )
|
||||||
|
dst 4 cells alien temp %allot
|
||||||
|
temp \ f tag-number %load-immediate
|
||||||
|
! Store expired slot
|
||||||
|
temp dst 1 alien@ STW
|
||||||
|
! Store underlying-alien slot
|
||||||
|
base dst 2 alien@ STW
|
||||||
|
! Store offset
|
||||||
|
displacement dst 3 alien@ STW ;
|
||||||
|
|
||||||
M:: ppc %box-alien ( dst src temp -- )
|
M:: ppc %box-alien ( dst src temp -- )
|
||||||
[
|
[
|
||||||
"f" define-label
|
"f" define-label
|
||||||
dst \ f tag-number %load-immediate
|
dst \ f tag-number %load-immediate
|
||||||
0 src 0 CMPI
|
0 src 0 CMPI
|
||||||
"f" get BEQ
|
"f" get BEQ
|
||||||
dst 4 cells alien temp %allot
|
dst temp src temp %allot-alien
|
||||||
! Store offset
|
|
||||||
src dst 3 alien@ STW
|
|
||||||
! Store expired slot
|
|
||||||
temp \ f tag-number %load-immediate
|
|
||||||
temp dst 1 alien@ STW
|
|
||||||
! Store underlying-alien slot
|
|
||||||
temp dst 2 alien@ STW
|
|
||||||
"f" resolve-label
|
"f" resolve-label
|
||||||
] with-scope ;
|
] with-scope ;
|
||||||
|
|
||||||
|
M:: ppc %box-displaced-alien ( dst displacement base temp -- )
|
||||||
|
[
|
||||||
|
"end" define-label
|
||||||
|
"ok" define-label
|
||||||
|
! If displacement is zero, return the base
|
||||||
|
dst base MR
|
||||||
|
0 displacement 0 CMPI
|
||||||
|
"end" get BEQ
|
||||||
|
! If base is already a displaced alien, unpack it
|
||||||
|
0 base \ f tag-number CMPI
|
||||||
|
"ok" get BEQ
|
||||||
|
temp base header-offset LWZ
|
||||||
|
0 temp alien type-number tag-fixnum CMPI
|
||||||
|
"ok" get BEQ
|
||||||
|
! displacement += base.displacement
|
||||||
|
temp base 3 alien@ LWZ
|
||||||
|
displacement displacement temp ADD
|
||||||
|
! base = base.base
|
||||||
|
base base 1 alien@ LWZ
|
||||||
|
"ok" resolve-label
|
||||||
|
dst base displacement temp %allot-alien
|
||||||
|
"end" resolve-label
|
||||||
|
] with-scope ;
|
||||||
|
|
||||||
M: ppc %alien-unsigned-1 0 LBZ ;
|
M: ppc %alien-unsigned-1 0 LBZ ;
|
||||||
M: ppc %alien-unsigned-2 0 LHZ ;
|
M: ppc %alien-unsigned-2 0 LHZ ;
|
||||||
|
|
||||||
|
|
|
@ -255,17 +255,42 @@ M:: x86 %box-float ( dst src temp -- )
|
||||||
|
|
||||||
: alien@ ( reg n -- op ) cells alien tag-number - [+] ;
|
: alien@ ( reg n -- op ) cells alien tag-number - [+] ;
|
||||||
|
|
||||||
|
:: %allot-alien ( dst base displacement temp -- )
|
||||||
|
dst 4 cells alien temp %allot
|
||||||
|
dst 1 alien@ base MOV ! alien
|
||||||
|
dst 2 alien@ \ f tag-number MOV ! expired
|
||||||
|
dst 3 alien@ displacement MOV ! displacement
|
||||||
|
;
|
||||||
|
|
||||||
M:: x86 %box-alien ( dst src temp -- )
|
M:: x86 %box-alien ( dst src temp -- )
|
||||||
[
|
[
|
||||||
"end" define-label
|
"end" define-label
|
||||||
dst \ f tag-number MOV
|
dst \ f tag-number MOV
|
||||||
src 0 CMP
|
src 0 CMP
|
||||||
"end" get JE
|
"end" get JE
|
||||||
dst 4 cells alien temp %allot
|
dst \ f tag-number src temp %allot-alien
|
||||||
dst 1 alien@ \ f tag-number MOV
|
"end" resolve-label
|
||||||
dst 2 alien@ \ f tag-number MOV
|
] with-scope ;
|
||||||
! Store src in alien-offset slot
|
|
||||||
dst 3 alien@ src MOV
|
M:: x86 %box-displaced-alien ( dst displacement base temp -- )
|
||||||
|
[
|
||||||
|
"end" define-label
|
||||||
|
"ok" define-label
|
||||||
|
! If displacement is zero, return the base
|
||||||
|
dst base MOV
|
||||||
|
displacement 0 CMP
|
||||||
|
"end" get JE
|
||||||
|
! If base is already a displaced alien, unpack it
|
||||||
|
base \ f tag-number CMP
|
||||||
|
"ok" get JE
|
||||||
|
base header-offset [+] alien type-number tag-fixnum CMP
|
||||||
|
"ok" get JNE
|
||||||
|
! displacement += base.displacement
|
||||||
|
displacement base 3 alien@ ADD
|
||||||
|
! base = base.base
|
||||||
|
base base 1 alien@ MOV
|
||||||
|
"ok" resolve-label
|
||||||
|
dst base displacement temp %allot-alien
|
||||||
"end" resolve-label
|
"end" resolve-label
|
||||||
] with-scope ;
|
] with-scope ;
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue