Mark H Weaver <[email protected]> writes:
> I did the moral equivalent of a git bisect, and found the culprit:
>
> commit d4883307ca64a7028b9a6cd072974437306c19d3
> Author: Andy Wingo <[email protected]>
> Date: Thu Nov 30 10:41:45 2017 +0100
>
> Minor CSE run-time optimization
>
> * module/language/cps/cse.scm (compute-equivalent-subexpressions): Minor
> optimization to reduce the size of equivalent expression keys, and to
> avoid some work if an expression has no key.
>
> Fortunately, this commit can be reverted in isolation without any
> difficulty, and apparently without any negative consequences. If a
> better solution isn't found soon, perhaps that's what we should do.
I pushed commit df93752479ab88446f5db4b1d6ebf53a85c7593f to the
stable-2.2 branch, which reverts the above commit. I'm closing this
bug, but feel free to reopen if there are still issues to resolve.
Thanks,
Mark
