Are you guys going to use CSP to implement SSA for AOT? 在 2013-1-24 PM6:36，"Andy Wingo" <wi...@pobox.com>写道：
> Hi! > > On Thu 24 Jan 2013 10:28, Mark H Weaver <m...@netris.org> writes: > > > The problem is that CPS fixes the order in which everything is > > evaluated, such as the order in which procedure arguments are > > evaluated, the order in which 'let' or 'letrec' initializers are > > evaluated, etc. The fact that these orders are unspecified in the > > direct-style gives the compiler freedom to choose an order that > > generates the best code, and apparently this freedom can often result > > in significant gains. Such ordering decisions must be made before the > > conversion to CPS. > > Agreed with the sentiment; however, two points: > > * we can have a CPS with let / letrec / * operators that bind a number > of values in unspecified order, and have a pass later that fixes > their order. > > * code motion passes like CSE depend on effects analysis, and can > often commute some operations > > Anyway, violent agreement! > > Cheers, > > Andy > -- > http://wingolog.org/ > >
