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radeonsi: lower ffma in nir to mad.

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This lowers ffma to a * b + c.

This seems like it should keep Marek happiest, so
we'd never get to the fma instruction emission code.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2017-10-10 13:23:40 +10:00
parent 2c61594d84
commit 80bbdb1483
1 changed files with 1 additions and 0 deletions
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src/gallium/drivers/radeonsi/si_pipe.c
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@ -795,6 +795,7 @@ static const struct nir_shader_compiler_options nir_options = {
.lower_fsat = true,
.lower_fdiv = true,
.lower_sub = true,
.lower_ffma = true,
.lower_pack_snorm_2x16 = true,
.lower_pack_snorm_4x8 = true,
.lower_pack_unorm_2x16 = true,