On Sat, 30 Dec 2023, Hans-Peter Nilsson wrote: > On Sat, 30 Dec 2023, Jonathan Wakely wrote: > > > On Sat, 30 Dec 2023, 01:41 Hans-Peter Nilsson, <h...@bitrange.com> wrote: > > > Or perhaps the cause is known? > > > > Not to me. It probably is a target codegen bug, since all this test really > > does is emulate a wide integer type using masks and shifts. > > If so, a generic code-generator bug. I've repeated the 5x > performance regression observation for a native build and > updated PR113175 (.32 vs 1.73 seconds). I'll see if I can > quickly find out whether it's codegen or libstdc++. I set it > the PR to the latter for the moment.
Now changed to /testsuite, because the apparent cause for the magnitude increase (.32 -> 1.63 seconds) is the testsuite part of r14-205. See the PR for details. HNY! > > > > With this, the test successfully completes in ~34 seconds. > > > > > > Ok to commit? > > > > > > > Looks OK to me, but Patrick wrote this test so please wait for him to > > confirm. I think this just reduces the number of cases tested, but doesn't > > miss any important edge cases that should be checked. > > Understood: holding, but will ping after the usual week. > Thanks for the review! > > brgds, H-P >
