[Bug 96296] clpeak causes a GPU hang

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

--- Comment #1 from Jan Vesely jan.vesely@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.