DId yo(In reply to comment #21)
> I amanaged to build llvm and mesa.
> 
> Here's my test results:
> As for both wine applications 3D Mark 2000 and Syberia, the error is gone
> and both applications continue past normally.
> 
> But Antichamber will crash the system hard.
> I have found place in the game where the llvm error always happens.
> When I use your version of llvm 3.5 instead of llvm 3.4 Antichamber wont
> exit with the error it will instead deadlock the whole system, only option
> is reboot.

Did you try this branch:
http://cgit.freedesktop.org/~tstellar/llvm/log/?h=si-spill-fixes