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Merged
merged 1 commit into from
Nov 5, 2025
Merged

Add preprocessing flag #1423

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2 changes: 1 addition & 1 deletion src/config.rkt
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@

(define default-flags
#hash([precision . ()]
[setup . (search)]
[setup . (search preprocess)]
[localize . ()]
[generate . (rr taylor proofs evaluate)]
[reduce . (regimes binary-search branch-expressions)]
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8 changes: 6 additions & 2 deletions src/core/mainloop.rkt
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@@ -1,6 +1,7 @@
#lang racket

(require "../utils/alternative.rkt"
(require "../config.rkt"
"../utils/alternative.rkt"
"../utils/common.rkt"
"../utils/timeline.rkt"
"../syntax/platform.rkt"
Expand Down Expand Up @@ -45,7 +46,10 @@

(define (run-improve! initial specification context pcontext)
(timeline-event! 'preprocess)
(define preprocessing (find-preprocessing specification context))
(define preprocessing
(if (flag-set? 'setup 'preprocess)
(find-preprocessing specification context)
'()))
(timeline-push! 'symmetry (map ~a preprocessing))
(define pcontext* (preprocess-pcontext context pcontext preprocessing))
(*pcontext* pcontext*)
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8 changes: 8 additions & 0 deletions www/doc/2.3/options.html
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Expand Up @@ -206,6 +206,14 @@ <h2>Search options</h2>
points</a>" error more often. Instead of turning this option off,
try adjusting the <kbd>--num-analysis</kbd> flag.</dd>

<dt><code>setup:preprocess</code></dt>
<dd>This option, on by default, uses identities of the input
expression (like even or symmetric expressions) to perform
rewriting more effectively. If turned off, Herbie will skip
preprocessing and work directly with the original expression. This
can be faster but may produce less accurate results for
expressions with exploitable symmetries.</dd>

<dt><code>generate:rr</code></dt>
<dd>This option, on by default, uses algebraic rewriting to
generate candidate programs. This is Herbie's primary method of
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