This series adds an optimization to detect things like: foo.x = bar.x + baz.x; foo.y = bar.y + baz.y; foo.z = bar.z + baz.z; foo.w = bar.w + baz.w;
and turn them into: foo = bar + baz; which shows up distressingly often in shaders translated from D3D bytecode, or by people who seemingly don't know that GLSL can do all that vector-y stuff for you. There is a similar pass in GLSL IR, but it can only handle operations on uniforms/inputs since it would've been too difficult to handle more complicated cases. But now that we have NIR, and the i965 vec4 backend uses NIR, we can write a much better pass using the magic of SSA. Shader-db results are in the last patch. Series is also available as the 'nir-vectorize' branch of my FDO repository. Connor Abbott (5): util/set: don't compare against deleted entries util/hash_table: don't compare deleted entries nir/array: add a few more helpers nir: add a vectorization pass i965/nir: use vectorization for non-scalar stages src/glsl/Makefile.sources | 1 + src/glsl/nir/nir.h | 2 + src/glsl/nir/nir_array.h | 21 ++ src/glsl/nir/nir_opt_vectorize.c | 447 ++++++++++++++++++++++++++++++++++++ src/mesa/drivers/dri/i965/brw_nir.c | 8 + src/util/hash_table.c | 3 +- src/util/set.c | 3 +- 7 files changed, 483 insertions(+), 2 deletions(-) create mode 100644 src/glsl/nir/nir_opt_vectorize.c -- 2.4.3 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
