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packages: Reduce code bloat due to list allocation in input fields.

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* guix/packages.scm (add-input-labels): New procedure.
(sanitize-inputs): Add case for (list …).

Change-Id: Ice8241508ded51efd38867b97ca19c262b8c4363
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Ludovic Courtès 2024-04-14 16:13:01 +02:00
parent 76127069e0
commit 402d0a9b9d
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GPG Key ID: 090B11993D9AEBB5
1 changed files with 12 additions and 2 deletions
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14
guix/packages.scm
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@ -438,16 +438,26 @@ from forcing GEXP-PROMISE."
inputs)
(else (map add-input-label inputs))))
(define (add-input-labels . inputs)
"Add labels to all of INPUTS."
(map add-input-label inputs))
(define-syntax sanitize-inputs
;; This is written as a macro rather than as a 'define-inlinable' procedure
;; because as of Guile 3.0.9, peval can handle (null? '()) but not
;; (null? (list x y z)); that residual 'null?' test contributes to code
;; bloat.
(syntax-rules (quote)
(syntax-rules (quote list)
"Sanitize INPUTS by turning it into a list of name/package tuples if it's
not already the case."
((_ '()) '())
((_ inputs) (maybe-add-input-labels inputs))))
((_ (list args ...))
;; As of 3.0.9, (list ...) is open-coded, which can lead to a long list
;; of instructions. To reduce code bloat in package modules where input
;; fields may create such lists, move list allocation to the callee.
(add-input-labels args ...))
((_ inputs)
(maybe-add-input-labels inputs))))
(define-syntax current-location-vector
(lambda (s)