Reverted your commit

Simon Marlow marlowsd at gmail.com
Sun May 1 07:55:52 UTC 2016


Thanks Simon, I'm looking into it.

On 28 April 2016 at 22:02, Simon Peyton Jones <simonpj at microsoft.com> wrote:

> Simon
>
> I reverted your commit
>
>
> https://phabricator.haskell.org/rGHC546f24e4f8a7c086b1e5afcdda624176610cbcf8
>
> because it made every single binary that GHC builds seg-fault on windows.
> Even
>
>                 main = return ()
>
> seg-faults.
>
> You may want to review and re-commit it.
>
> Simon
>
>
>
> commit 24864ba5587c1a0447beabae90529e8bb4fa117a
>
> Author: Simon Marlow <marlowsd at gmail.com>
>
> Date:   Sat Apr 23 22:14:43 2016 +0100
>
>     Use __builtin_clz() to implement log_2()
>
>         A microoptimisation in the block allocator.
>
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