#10286: native code generator: GHC crash at GHC.Prim SIMD vector -------------------------------------+------------------------------------- Reporter: hkanai | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Compile-time | (amd64) crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by carter): Hello! 1) the SIMD primops in GHC are highly experimental, and they're ONLY supported on the -fllvm backend currently, so YOU WILL get a GHC panic when trying to compile them with the normal backend (this is planned to be fixed at some point, but also requires rethinking what the SIMD api SHOULD be, because writing good SIMD isn't portable between even different micro architectures!) 2) your HOST CPU doesn't support AVX style instructions, so `DoubleX4#` sized simd values wont be compiled terribly efficiently, because LLVM will (in some fashion) split those `DoubleX4#` values across two `DoubleX2#` sized registers. 3) that llvm error about `!0 = metadata !{metadata !"top", i8* null}` seems like a real bug! I'm going to rope some other folks in to help track that down. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10286#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler