[Libclc-dev] [PATCH 0/9] R600 load/store improvements

Jan Vesely jan.vesely at rutgers.edu
Wed Jul 23 15:29:53 PDT 2014

On Tue, 2014-07-22 at 20:46 -0500, Aaron Watry wrote:
> This series attempts to clean up the r600 int32 vload/vstore logic.
> After this series is done, we use assembly versions of vload/vstore
> for all int32 loads/stores for all address spaces on r600. The only downside
> is that there's an RFC patch at the beginning of the series which is
> necessary at the moment to prevent the nextafter/sign builtins from
> regressing for float16 data types (see the associated piglit tests).
> The RFC patch shouldn't have any side-effects, but it seems to paper
> over a bug in clang or llvm somewhere. It does seem to result in slight
> savings due to some simpler shufflevector operations.
> With this series applied, clover for the OSS radeon driver generates
> much cleaner llvm bitcode from CL kernels on my machine when
> using 32-bit int/float types.  In the future, I'll give a shot at
> expanding the assembly optimizations to other types such as char,
> short, long, double, and half.

I tried this patches and both piglit and gegl run OK on my TURSK GPU.
you can add my tested-by.


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Jan Vesely <jan.vesely at rutgers.edu>
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