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nak: Set lower_pack_64_4x16
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Otherwise, these can cause infinite loops in optimization because there
aren't _split variants and the optimizer tries to combine and split
things infinitely.

Reviewed-by: Mel Henning <drawoc@darkrefraction.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34849>
(cherry picked from commit efd1cddbe9)
This commit is contained in:
Faith Ekstrand 2025-05-06 17:10:36 -04:00 • committed by Eric Engestrom
parent e7c1f35024
commit 349c1e2cf4
2 changed files with 2 additions and 1 deletions
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2
.pick_status.json
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@ -44,7 +44,7 @@
"description": "nak: Set lower_pack_64_4x16",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

1
src/nouveau/compiler/nak/api.rs
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@ -120,6 +120,7 @@ fn nir_options(dev: &nv_device_info) -> nir_shader_compiler_options {
op.lower_fsqrt = dev.sm < 52;
op.lower_bitfield_extract = dev.sm >= 70;
op.lower_bitfield_insert = true;
op.lower_pack_64_4x16 = true;
op.lower_pack_half_2x16 = true;
op.lower_pack_unorm_2x16 = true;
op.lower_pack_snorm_2x16 = true;