18 May
2010
18 May
'10
12:38 p.m.
On Tue, May 18, 2010 at 9:30 AM, Richard Warburton < richard.warburton@gmail.com> wrote:
A colleague of mine pointed out that ghc wasn't performing as he expected when optimising some code. I wonder if anyone could offer any insight as to why its not noting this common subexpression:
GHC performs almost no common subexpression elimination, the reasons being that it can introduce space leaks and undesired extra laziness.