Re: Reverted your commit

Thanks Simon, I'm looking into it. On 28 April 2016 at 22:02, Simon Peyton Jones 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

Date: Sat Apr 23 22:14:43 2016 +0100

Use __builtin_clz() to implement log_2()

A microoptimisation in the block allocator.