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pan/indirect_dispatch: Expand split expressions

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Careful algebraic transforms makes these much simpler.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11123>
This commit is contained in:
Alyssa Rosenzweig 2021-06-09 12:31:10 -04:00 • committed by Marge Bot
parent 989caacc32
commit fdfc8b9806
1 changed files with 4 additions and 12 deletions
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16
src/panfrost/lib/pan_indirect_dispatch.c
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@ -193,18 +193,10 @@ pan_indirect_dispatch_init(struct panfrost_device *dev)
nir_ssa_def *dims = nir_channel(&b, job_dim, 0);
nir_ssa_def *split = nir_channel(&b, job_dim, 1);
nir_ssa_def *num_wg_x_split = nir_iand_imm(&b, nir_ushr_imm(&b, split, 10), 0x3f);
nir_ssa_def *num_wg_y_split =
nir_iadd(&b, num_wg_x_split,
nir_bcsel(&b,
nir_ieq(&b, num_wg_x_m1, zero),
zero,
nir_iadd(&b, nir_ufind_msb(&b, num_wg_x_m1), one)));
nir_ssa_def *num_wg_z_split =
nir_iadd(&b, num_wg_y_split,
nir_bcsel(&b,
nir_ieq(&b, num_wg_y_m1, zero),
zero,
nir_iadd(&b, nir_ufind_msb(&b, num_wg_y_m1), one)));
nir_ssa_def *num_wg_y_split = nir_iadd(&b, num_wg_x_split,
nir_isub_imm(&b, 32, nir_uclz(&b, num_wg_x_m1)));
nir_ssa_def *num_wg_z_split = nir_iadd(&b, num_wg_y_split,
nir_isub_imm(&b, 32, nir_uclz(&b, num_wg_y_m1)));
split = nir_ior(&b, split,
nir_ior(&b,
nir_ishl(&b, num_wg_y_split, nir_imm_int(&b, 16)),