From: Sergei Trofimovich
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
Signed-off-by: Sergei Trofimovich
---
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
