[Bug 96296] clpeak causes a GPU hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96296

--- Comment #1 from Jan Vesely <jan.vesely at rutgers.edu> ---
(In reply to Grazvydas Ignotas from comment #0)
> AMD JUNIPER (DRM 2.43.0 / 4.6.0)
> Mesa 12.1.0-devel (git-3581812)
> llvm-3.8 1:3.8-2ubuntu3
> 
> clpeak - https://github.com/krrishnarraj/clpeak.git
> 
> As soon as it starts it's float8 test (earlier ones run fine), the machine
> locks up and does not recover. Perhaps it attempts to execute some fp64
> instructions that are missing on Juniper?

any attempt to use doubles should fail to build the kernel (even with llvm
3.8).

Running with CLOVER_DEBUG=llvm,asm CLOVER_OUTPUT=out_file should give you an
idea about what the compiled program looks like, though I'd recommend using
llvm 3.9.

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