#16094: panic! (the 'impossible' happened): for powerpc-unknown-linux getRegister(ppc): I64[I32[BaseReg + 812] + 64] ----------------------------------------+-------------------------------- Reporter: slyfox | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: Operating System: Linux | Architecture: powerpc Type of failure: Building GHC failed | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ----------------------------------------+-------------------------------- Changes (by trommler): * owner: (none) => trommler * failure: None/Unknown => Building GHC failed * os: Unknown/Multiple => Linux * architecture: Unknown/Multiple => powerpc Comment: I think the panic is caused by a lack of 64-bit comparison operations on 32-bit PowerPC. The change in `stg_gc_noregs` is in changeset:d70b19bfb5ed79b22c2ac31e22f46782fc47a117. This commit has an implementation for X86 but not for PowerPC. I can provide a patch but I will need help with testing. There is no support for PowerPC 32-bit in openSUSE anymore :-( -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16094#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler