On Sun, 2007-03-04 at 20:45 -0800, Mark Mitchell wrote: > However, I do think that it's important to eliminate some of the 139 > open P2 and P1 regressions [2], especially those P1 regressions which > did not appear in GCC 4.1.x.
There are a handful I've been involved with which are labeled as 4.0/4.1/4.2/4.3 regressions which I don't see ever being fixed in 4.0 through 4.2. There is perhaps some hope for 4.3, but 4.4 is the more likely case. They require new development work that I think is unlikely to ever be backported to these releases for just these testcases. The PRs are - 21596 I made a simple attempt at this one, but the simple approach isn't going to work. - 23200 fixed in 4.3 by the new version of TER. Unlikely to port the entire TER rewrite back to 4.2 at this stage (it could be done tho :-). - 27986 This is in fact a variation of the issue in 21596, except this one crosses basic blocks. It will require all new work to get this case. - 27877 Mark Shinwell applied a patch for this to 4.3. I pinged him about applying it to 4.2. If I haven't heard from him by thursday, I will apply it friday. I would say you can mark the first 3 as 'will not fix', or whatever you do to indicate they aren't going to be resolved in 4.2. When I actually have a fix for them (or RTL optimizers fix them), we can look at what it takes to port them back, but for this release I'd claim they are a no-go. Andrew