#14062: Pure syntax transformation affects performance. -------------------------------------+------------------------------------- Reporter: danilo2 | Owner: (none) Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by George): I can't reproduce with 8.6.1 either: {{{ benchmarking monad transformers overhead/test1 time 94.84 ms (91.89 ms .. 97.81 ms) 0.998 R² (0.993 R² .. 1.000 R²) mean 97.52 ms (95.91 ms .. 100.6 ms) std dev 3.344 ms (1.380 ms .. 4.705 ms) benchmarking monad transformers overhead/test2 time 95.69 ms (94.49 ms .. 98.26 ms) 0.999 R² (0.996 R² .. 1.000 R²) mean 95.81 ms (95.24 ms .. 97.28 ms) std dev 1.375 ms (323.2 μs .. 2.151 ms) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14062#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler