#9740: D380 caused fft2 regressions -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Core | Version: 7.8.3 Libraries | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Easy (less than 1 Unknown/Multiple | hour) Type of failure: Runtime | Blocked By: performance bug | Related Tickets: Test Case: | Blocking: | Differential Revisions: Phab:D390 | -------------------------------------+------------------------------------- Comment (by dfeuer): Replying to [comment:5 nomeata]:
It fixed the regression in T7257: http://ghcspeed- nomeata.rhcloud.com/timeline/?exe=2&base=2%2B68&ben=tests%2Falloc%2FT7257&env=1&revs=50&equid=on but not the one in fft2: http://ghcspeed- nomeata.rhcloud.com/timeline/?exe=2&base=2%2B68&ben=nofib%2Fallocs%2Ffft2&env=1&revs=50&equid=on
Do your measurements disagree, or were you just expecting this to fix it. Could you have a second look?
That's most peculiar. I had not measured T7257, but I ''definitely'' saw an improvement in fft2, unless I read something all wrong. I'm running nofib now and will review the numbers again. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9740#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler