Ticket #9055 has a patch that uses the MACHREGS_NO_REGS macro coming from compiler/codeGen/Platform/NoRegs.hs.
I think globalRegMaybe should depend on the target platform of the code to be generated and not on the host platform. Using the NO_REGS macro does the latter. I am thinking of cross-compilation here, but I might be missing something major. Peter On 01 May 2014, at 12:03, sly...@gmail.com wrote: > From: Sergei Trofimovich <sly...@gentoo.org> > > 83a003fcaec93dbfd5b46837f2bf3353412b9877 introduced optimization > which likes to know if a reg is a hardware reg via 'globalRegMaybe': > > But --enable-unregisterised does not define that function: > > ghc-stage1: panic! (the 'impossible' happened) > (GHC version 7.9.20140419 for x86_64-unknown-linux): > globalRegMaybe not defined for this platform > > CC: Simon Marlow <marlo...@gmail.com> > Signed-off-by: Sergei Trofimovich <sly...@gentoo.org> > --- > includes/CodeGen.Platform.hs | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/includes/CodeGen.Platform.hs b/includes/CodeGen.Platform.hs > index 3d6dd41..1e7c17d 100644 > --- a/includes/CodeGen.Platform.hs > +++ b/includes/CodeGen.Platform.hs > @@ -743,7 +743,11 @@ globalRegMaybe CurrentNursery = Just > (RealRegSingle REG_CurrentNursery > # endif > globalRegMaybe _ = Nothing > #else > +# ifdef NO_REGS > +globalRegMaybe _ = Nothing > +# else > globalRegMaybe = panic "globalRegMaybe not defined for this platform" > +# endif /* !NO_REGS */ > #endif > > freeReg :: RegNo -> FastBool > -- > 1.9.2 > > _______________________________________________ > ghc-devs mailing list > ghc-devs@haskell.org > http://www.haskell.org/mailman/listinfo/ghc-devs _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://www.haskell.org/mailman/listinfo/ghc-devs
