Int-based lexer flag bitmask exhausted

[Herbert Valerio Riedel]

On 2014-06-21 at 13:35:28 +0200, Herbert Valerio Riedel wrote:
> On 2014-06-21 at 13:09:31 +0200, Edward Z. Yang wrote:
>> As long as you check the performance impact on 32-bit, sounds good to
>> me.
>
> What's the currently accepted/canonical lexer/parser benchmark to evaluate that?

PS: I've submitted a preparatory refactoring as

  https://phabricator.haskell.org/D23

for review, which allows upgrading to Word64 by simply modifying one
source line.