#10383: AArch64: get GHC Calling convention working ----------------------------------------+------------------------------- Reporter: erikd | Owner: erikd Type: feature request | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: aarch64 Type of failure: Building GHC failed | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ----------------------------------------+------------------------------- Comment (by erikd): Same problem compiling the most trivial "hello world" program. Without optimisation it compiles fine and the result executable works correctly. With optimisation the compiler crashes with a segfault. Add `-dshow-passes` results in: {{{ $ inplace/bin/ghc-stage2 hello-world.hs -O1 -dshow-passes -fforce-recomp -o \ hello-world Glasgow Haskell Compiler, Version 7.11.20151019, stage 2 booted by GHC version \ 7.8.4 Using binary package database: /home/erikd/ghc-upstream/inplace/lib/ package.conf.d/package.cache wired-in package ghc-prim mapped to ghc-prim-0.4.0.0 wired-in package integer-gmp mapped to integer-gmp-1.0.0.0 wired-in package base mapped to base-4.8.2.0 wired-in package rts mapped to rts wired-in package template-haskell mapped to template-haskell-2.11.0.0 wired-in package ghc mapped to ghc-7.11.20151019 wired-in package dph-seq not found. wired-in package dph-par not found. wired-in package ghc-prim mapped to ghc-prim-0.4.0.0 wired-in package integer-gmp mapped to integer-gmp-1.0.0.0 wired-in package base mapped to base-4.8.2.0 wired-in package rts mapped to rts-1.0 wired-in package template-haskell mapped to template-haskell-2.11.0.0 wired-in package ghc mapped to ghc-7.11.20151019 wired-in package dph-seq not found. wired-in package dph-par not found. *** Chasing dependencies: Chasing modules from: *hello-world.hs Stable obj: [] Stable BCO: [] Ready for upsweep [NONREC ModSummary { ms_hs_date = 2015-10-19 23:10:28.96994973 UTC ms_mod = Main, ms_textual_imps = [(Nothing, Prelude)] ms_srcimps = [] }] *** Deleting temp files: compile: input file hello-world.hs *** Checking old interface for Main: [1 of 1] Compiling Main ( hello-world.hs, hello-world.o ) *** Parser: *** Renamer/typechecker: *** Desugar: Result size of Desugar (after optimization) = {terms: 7, types: 5, coercions: 0} *** Simplifier: Result size of Simplifier iteration=1 = {terms: 11, types: 10, coercions: 0} Result size of Simplifier = {terms: 11, types: 10, coercions: 0} *** Specialise: Illegal instruction (core dumped) }}} Regardless of the above, this is almost certainly an LLVM or linker problem. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10383#comment:36 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler