On Wed, 2019-11-13 at 09:27 -0700, Sandra Loosemore wrote: > > I bootstrapped and regression-tested this on x86_64-linux-gnu. There > are a few regressions involving these tests: > > gcc.dg/tree-ssa/pr77445-2.c I believe tihs is another instance of the FSA optimization. I'd need to see the before/after dumps to know if it's regressed. The main purpose of the test was to verify that we didn't muck up the profile estimation after the FSA optimization.
> gcc.dg/tree-ssa/ssa-dce-3.c So I think this one is supposed to collapse into a trivial infinite loop. Anything else would be a regression. > gcc.dg/tree-ssa/ssa-dom-thread-7.c This is the FSA optimization. Unfortunately checking for it being done right is exceedingly painful. If you pass along the before/after dumps I can probably help determine whether or not we just need an update to the scanned bits. Given how much pressure there was to handle the FSA optimization, I'd prefer to make sure we're still doing it before moving forward. jeff
