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Effects analysis: define causes-all-effects?

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* module/language/cps/effects-analysis.scm (causes-all-effects?): New
  export.
This commit is contained in:
Andy Wingo 2014-04-03 16:37:07 +02:00
parent f5fcd7f203
commit 19ceadab51
1 changed files with 4 additions and 1 deletions
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5
module/language/cps/effects-analysis.scm
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@ -70,7 +70,8 @@
effect-free?
constant?
depends-on-effects?
causes-effects?))
causes-effects?
causes-all-effects?))
(define-syntax define-effects
(lambda (x)
@ -233,6 +234,8 @@
(not (zero? (logand (&depends-on x) effects))))
(define-inlinable (causes-effects? x effects)
(not (zero? (logand (&causes x) (cause effects)))))
(define-inlinable (causes-all-effects? x effects)
(= (logand (&causes x) (cause effects)) (cause effects)))
(define-inlinable (effects-commute? a b)
(and (not (causes-effects? a (&depends-on b)))