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nir/opt_algebraic: lower 64-bit fmin3/fmax3/fmed3

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This unconditionally lowers 64-bit fmin3/fmax3/fmed3 because
AMD hardware doesn't have native instructions, and no drivers
except RADV uses these instructions.

Fixes dEQP-VK.spirv_assembly.instruction.amd_trinary_minmax.*.f64.*
with ACO.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4570>
This commit is contained in:
Samuel Pitoiset
2020-04-15 16:55:31 +02:00
committed by Marge Bot
parent eed0ace466
commit 59427b6d1d
1 changed files with 4 additions and 0 deletions
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4
src/compiler/nir/nir_opt_algebraic.py
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@@ -1076,6 +1076,10 @@ optimizations.extend([
(('bcsel', ('ine', a, -1), ('ifind_msb', a), -1), ('ifind_msb', a)),
(('fmin3@64', a, b, c), ('fmin@64', a, ('fmin@64', b, c))),
(('fmax3@64', a, b, c), ('fmax@64', a, ('fmax@64', b, c))),
(('fmed3@64', a, b, c), ('fmax@64', ('fmin@64', ('fmax@64', a, b), c), ('fmin@64', a, b))),
# Misc. lowering
(('fmod', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod'),
(('frem', a, b), ('fsub', a, ('fmul', b, ('ftrunc', ('fdiv', a, b)))), 'options->lower_fmod'),