[Bug 66847] compilation broken with llvm 3.3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66847

--- Comment #5 from Andreas Boll <andreas.boll.dev at gmail.com> ---
(In reply to comment #4)
> You should also remove "or newer". 

Yes, will do.

> Also "master" isn't the right branch
> (which one is the right?).

master is the right branch. See http://cgit.freedesktop.org/~tstellar/llvm

> While you are at it, checking for r600 target
> isn't enough, because it also needs "host".
>

AFAIK the host target is needed for llvmpipe and draw-llvm too.
So a more generic check would be required. But that's stuff for mesa master and
should be in a separate commit anyway.

> I have the feeling that we should disable r600-llvm support in 9.1 release
> alltogether. I think it was just for testing anyway and likely unstable/lots
> of bugs still. It also saves distros from compiling some experimental
> version of llvm.

For initial radeonsi support it's required.
The r600g llvm backend isn't enabled by default and the help string says:
Enable experimental LLVM backend for graphics shaders.
See http://cgit.freedesktop.org/mesa/mesa/tree/configure.ac?h=9.1#n641
I think that should be enough.

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