#10852: ghc 7.8.4 on arm - panic: Simplifier ticks exhausted -------------------------------------+------------------------------------- Reporter: andrewufrank | Owner: Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 7.10.2 Resolution: | Keywords: Generics Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #5642, #9675 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by thomie): * priority: normal => high Comment: I made two changes to my test setup, to compile `InstanceSerialize.hs`: * use `cereal` commit [https://github.com/GaloisInc/cereal/commit/7092614cdea80ab08c225c7a5c74f7ae1... 7092614cdea80ab08c225c7a5c74f7ae1608e0bb] instead of cereal-0.4.1 This includes a [https://github.com/GaloisInc/cereal/pull/54 pull request] that @thoughpolice made recently, to split up the `GSerialize` class in two. (same trick as ticket:9630#comment:23). I'd hoped this would reduce memory consumption and compile time. * use ghc-8.0.1 instead of ghc-7.10.3. Result: {{{ Simplifier ticks exhausted When trying UnfoldingDone unGet }}} `-fsimpl-tick-factor=400` made it go through (and `300` did not), but it still uses 2GB RAM and takes 4-5 minutes to complete. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10852#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler