Using old code generator

[Simon Peyton-Jones]

I believe that the old codegen is gone altogether.

Please add to the ticket to say that it blocks compilation of a particular package (with instructions for how to reproduce). Is this an important package?

Someone should just fix the codegen!  Any volunteers?  Simon left some breadcrumbs and I'm sure would help.


Simon

| -----Original Message-----
| From: glasgow-haskell-users-bounces at haskell.org [mailto:glasgow-haskell-
| users-bounces at haskell.org] On Behalf Of Roman Cheplyaka
| Sent: 12 April 2013 11:27
| To: glasgow-haskell-users at haskell.org
| Subject: Using old code generator
| 
| Hi,
| 
| I'm looking for a workaround for #7574 [1] (I run into it when trying to
| build the 'statistics' package with profiling enabled with GHC HEAD.)
| 
| The symptom is
| 
|   ghc-stage2: panic! (the 'impossible' happened)
|     (GHC version 7.7.20130407 for i386-unknown-linux):
|     allocateRegsAndSpill: Cannot read from uninitialized register
|       %vI_cCdO
| 
| [1]: http://hackage.haskell.org/trac/ghc/ticket/7574
| 
| Do I understand correctly that this bug is specific to the new codegen?
| If so, is it possible to ask the compiler to use the old codegen?
| Is it okay to mix together packages compiled with both codegens?
| 
| Thanks,
| Roman
| 
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