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| author | Andy Wingo <wingo@pobox.com> | 2020-07-30 16:30:23 +0200 |
|---|---|---|
| committer | Andy Wingo <wingo@pobox.com> | 2020-07-30 16:30:23 +0200 |
| commit | f13b27a4cc6ea35e8595e7d926c5632eb797364a (patch) | |
| tree | 06b9fc65d1f6ad1965ea04152aa4e214a7a7c8fd /module/language/tree-il/compile-bytecode.scm | |
| parent | aa44a71750aa6b06fd4974330f2c71523a63ecd9 (diff) | |
| download | guile-f13b27a4cc6ea35e8595e7d926c5632eb797364a.tar.gz | |
Improve code generation for eq? on immediates
* module/language/tree-il/compile-bytecode.scm (canonicalize):
* module/language/tree-il/compile-cps.scm (canonicalize): Specialize
eq-false? and similar predicates.
Diffstat (limited to 'module/language/tree-il/compile-bytecode.scm')
| -rw-r--r-- | module/language/tree-il/compile-bytecode.scm | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/module/language/tree-il/compile-bytecode.scm b/module/language/tree-il/compile-bytecode.scm index b8d432f3c..59bed8d27 100644 --- a/module/language/tree-il/compile-bytecode.scm +++ b/module/language/tree-il/compile-bytecode.scm @@ -422,6 +422,20 @@ (($ <primcall> src '>= (a b)) (reify-branch src '<= (list b a))) (($ <primcall> src '> (a b)) (reify-branch src '< (list b a))) + ;; Specialize eq?. + (($ <primcall> src 'eq? (a b)) + (let ((a (if (const? b) a b)) + (b (if (const? b) b a))) + (define (simplify test) (reify-branch src test (list a))) + (match b + (($ <const> _ '()) (simplify 'eq-null?)) + (($ <const> _ #f) (simplify 'eq-false?)) + (($ <const> _ #t) (simplify 'eq-true?)) + (($ <const> _ #nil) (simplify 'eq-nil?)) + (($ <const> _ (? unspecified?)) (simplify 'unspecified?)) + (($ <const> _ (? eof-object?)) (simplify 'eof-object?)) + (_ (reify-branch src 'eq? (list a b)))))) + ;; Simplify "not". (($ <primcall> src 'not (x)) (finish-conditional |