This series completely drops GLSL IR opts from the i965 backend for gen7.5+ (see patch 7 for why we don't drop them for other gens yet).
The first few patches introduce optimisations which help reduce the egressions from dropping brw_do_channel_expressions() and brw_do_vector_splitting(). We also disable varying packing to avoid regressions with varyings used in interpolateAt* functions. Patch 6 causes the following tests to regress on HSW, but that seems like it might just be uncovering an existing bug. Any help with resolving this is appreciated, I couldn't spot anything obviously wrong. ES31-CTS.functional.shaders.builtin_functions.integer.umulextended.uvec2_highp_vertex ES31-CTS.functional.shaders.builtin_functions.integer.imulextended.ivec2_highp_vertex ES31-CTS.functional.shaders.builtin_functions.integer.umulextended.uvec2_highp_geometry ES31-CTS.functional.shaders.builtin_functions.integer.imulextended.ivec2_highp_geometry Series overall (i965 BDW): total instructions in shared programs: 13010293 -> 12963396 (-0.36%) instructions in affected programs: 4614068 -> 4567171 (-1.02%) helped: 19585 HURT: 2888 total cycles in shared programs: 246717288 -> 246445198 (-0.11%) cycles in affected programs: 219549018 -> 219276928 (-0.12%) helped: 32451 HURT: 33855 total loops in sharedsrc/mesa/drivers/dri/i965/brw_fs_vector_splitting.cpp programs: 2933 -> 2933 (0.00%) loops in affected programs: 0 -> 0 helped: 0 HURT: 0 total spills in shared programs: 14937 -> 14498 (-2.94%) spills in affected programs: 10435 -> 9996 (-4.21%) helped: 299 HURT: 30 total fills in shared programs: 20211 -> 19632 (-2.86%) fills in affected programs: 13504 -> 12925 (-4.29%) helped: 301 HURT: 30 LOST: 42 GAINED: 59 Note: Most of the spill change is just in Deus Ex see patch 2. Run time for shader-db on my machine goes from ~795 seconds to ~665 seconds. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
