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| author | Andy Wingo <wingo@pobox.com> | 2021-05-24 11:07:14 +0200 |
|---|---|---|
| committer | Andy Wingo <wingo@pobox.com> | 2021-05-24 11:09:24 +0200 |
| commit | 17aab66e75136cf23c7f0d4942b61d6947f98f9b (patch) | |
| tree | e02324740728284c9a749399bfb6f9cc253dfe2c /module/language | |
| parent | f499754bc8291a044c5034b634ac02a01bde9b49 (diff) | |
| download | guile-17aab66e75136cf23c7f0d4942b61d6947f98f9b.tar.gz | |
Fix bug in eq-constant? propagation in CSE if kf == kt
* module/language/cps/cse.scm (compute-out-edges): Only propagate
constant to successor if successor not kf.
* test-suite/tests/compiler.test ("cse auxiliary definitions"):
("closure conversion"): Refactor.
("constant propagation"): New test.
Fixes #48368.
Diffstat (limited to 'module/language')
| -rw-r--r-- | module/language/cps/cse.scm | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/module/language/cps/cse.scm b/module/language/cps/cse.scm index 55cf5490e..47c0f90e6 100644 --- a/module/language/cps/cse.scm +++ b/module/language/cps/cse.scm @@ -360,9 +360,9 @@ for a label, it isn't known to be constant at that label." (_ bool)) (match (and (< pred succ) (intmap-ref out pred)) (($ $kargs _ _ ($ $branch kf kt src 'eq-constant? c (v))) - (if (eqv? kt succ) - (adjoin-constant consts v c) - consts)) + (if (eqv? kf succ) + consts + (adjoin-constant consts v c))) (_ consts))))))) (define (propagate-analysis analysis label out) |