#9740: D380 caused fft2 regressions -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler | Version: 7.8.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Easy (less than 1 | Type of failure: Runtime hour) | performance bug Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: Phab:D390 -------------------------------------+------------------------------------- When I got rid of the hand-unboxing in GHC.List, I missed the fact that a `take` helper function took an unboxed value and was therefore strict. When I changed that to a regular function, I didn't make it strict, and this caused a regression in fft2 and (I believe) also a test suite perf test. The function is properly strictified in D390. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9740 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler