Hi Bill, On Thu, Mar 07, 2019 at 06:33:48PM -0600, Bill Schmidt wrote: > We recently discovered a problem in swap optimization where the du- and > ud-chains > were getting corrupted after a preliminary modification phase and prior to the > main body of the pass. The fix for this is to rebuild the chains between > phases. > > Bootstrapped and tested on powerpc64le-unknown-linux-gnu with no regressions. > I've not included a test case because the problem tends to get lost in > reduction, > and may shift over time anyway. Is this okay for trunk, and eventual backport > to 8 and 7?
Like Richard I think this is expensive. But I don't think you can do better currently, so, okay for trunk and backports. Thanks! Segher
