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Remove special optimizer and backend support for pairs

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* module/language/cps/compile-bytecode.scm (compile-function):
* module/language/cps/cse.scm (compute-equivalent-subexpressions):
* module/language/cps/dce.scm (compute-live-code):
* module/language/cps/effects-analysis.scm:
* module/language/cps/types.scm: Remove support for cons, car, etc
  primcalls.
* module/language/cps/effects-analysis.scm (&car, &cdr): Remove
  undefined exports.
* module/system/vm/assembler.scm: Remove emit-cons, etc exports.
This commit is contained in:
Andy Wingo 2018-01-07 18:24:15 +01:00
parent 49fa4980bb
commit abfe04835b
6 changed files with 2 additions and 44 deletions
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4
module/language/cps/compile-bytecode.scm
View file

@ -327,10 +327,6 @@
(($ $primcall 'string-set! #f (string index char))
(emit-string-set! asm (from-sp (slot string)) (from-sp (slot index))
(from-sp (slot char))))
(($ $primcall 'set-car! #f (pair value))
(emit-set-car! asm (from-sp (slot pair)) (from-sp (slot value))))
(($ $primcall 'set-cdr! #f (pair value))
(emit-set-cdr! asm (from-sp (slot pair)) (from-sp (slot value))))
(($ $primcall 'push-fluid #f (fluid val))
(emit-push-fluid asm (from-sp (slot fluid)) (from-sp (slot val))))
(($ $primcall 'pop-fluid #f ())

5
module/language/cps/cse.scm
View file

@ -253,16 +253,13 @@ false. It could be that both true and false proofs are available."
(add-definitions
((b <- box #f o) (o <- box-ref #f b))
((box-set! #f b o) (o <- box-ref #f b))
((o <- cons #f x y) (x <- car #f o)
(y <- cdr #f o))
((scm-set! p s i x) (x <- scm-ref p s i))
((scm-set!/tag p s x) (x <- scm-ref/tag p s))
((scm-set!/immediate p s x) (x <- scm-ref/immediate p s))
((word-set! p s i x) (x <- word-ref p s i))
((word-set!/immediate p s x) (x <- word-ref/immediate p s))
((set-car! #f o x) (x <- car #f o))
((set-cdr! #f o y) (y <- cdr #f o))
((s <- allocate-struct #f v n) (v <- struct-vtable #f s))
((s <- allocate-struct/immediate n v) (v <- struct-vtable #f s))
((struct-set! #f s i x) (x <- struct-ref #f s i))

3
module/language/cps/dce.scm
View file

@ -188,8 +188,7 @@ sites."
(and (causes-effect? fx &write)
(match exp
(($ $primcall
(or 'set-car! 'set-cdr!
'box-set!
(or 'box-set!
'scm-set! 'scm-set!/tag 'scm-set!/immediate
'word-set! 'word-set!/immediate) _
(obj . _))

15
module/language/cps/effects-analysis.scm
View file

@ -56,8 +56,6 @@
&fluid
&prompt
&car
&cdr
&vector
&box
&module
@ -383,19 +381,6 @@ the LABELS that are clobbered by the effects of LABEL."
(&write-field
(annotation->memory-kind ann) idx)))))
;; Pairs.
(define-primitive-effects
((cons a b) (&allocate &pair))
((list . _) (&allocate &pair))
((car x) (&read-field &pair 0) &type-check)
((set-car! x y) (&write-field &pair 0) &type-check)
((cdr x) (&read-field &pair 1) &type-check)
((set-cdr! x y) (&write-field &pair 1) &type-check)
((memq x y) (&read-object &pair) &type-check)
((memv x y) (&read-object &pair) &type-check)
((list? arg) (&read-field &pair 1))
((length l) (&read-field &pair 1) &type-check))
;; Variables.
(define-primitive-effects
((box v) (&allocate &box))

14
module/language/cps/types.scm
View file

@ -812,20 +812,6 @@ minimum, and maximum."
;;;
;;;
;;; Pairs.
;;;
(define-simple-types
((cons &all-types &all-types) &pair)
((car &pair) &all-types)
((set-car! &pair &all-types))
((cdr &pair) &all-types)
((set-cdr! &pair &all-types)))
;;;

5
module/system/vm/assembler.scm
View file

@ -200,11 +200,6 @@
emit-string->number
emit-string->symbol
emit-symbol->keyword
emit-cons
emit-car
emit-cdr
emit-set-car!
emit-set-cdr!
emit-add
emit-add/immediate
emit-sub