#10244: "memory barriers unimplemented on this architecture" on ARM pre-ARMv7 -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: Component: Runtime | Version: 7.10.1 System | Operating System: Unknown/Multiple Keywords: | Type of failure: Building GHC Architecture: arm | failed Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- Phab:D33 broke the build on ARM pre-ARMv7, because there is no definition of `store_load_barrier` or `load_load_barrier` for those platforms. (Granted, the old fall-back behavior of doing nothing was almost certainly incorrect.) I don't know whether we need CPU-level barriers here, or whether they are available. At a minimum, we need a compiler-level barrier. If we need a CPU-level barrier and it isn't provided by the instruction set, then I guess we should disable SMP for these platforms in `mk/config.mk.in`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10244 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler