On 25 Sep 2005 10:10:39 -0700, Ian Lance Taylor <ian@airs.com> wrote: > Daniel Berlin <[EMAIL PROTECTED]> writes: > > > second, how often does this actually set anything useful with restrict > > types (I assume the value is not interesting in any other cases)? > > In functions which use the restrict qualifier, it does something > useful pretty often: just about every time the restricted pointer is > used other than as a simple *p. The real question, which I don't know > the answer to, is how much that helps in common code. (It does make a > significant difference in certain key functions at my current job.)
It does gain about 2-5% for certain C-to-POOMA comparison benchmarsk (only for the C part of course). Also we have PRs about this and it is a regression. So I defenitively would welcome a patch to do this for 4.1 (and even 4.0). Richard.
