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pan/bi: Run lower_alu_width after opt_algebraic_late

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It can generate extract instructions which we expect to be scalar.

Cc: mesa-stable
Reviewed-by: Christoph Pillmayer <christoph.pillmayer@arm.com>
(cherry picked from commit deb9244436)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39969>
This commit is contained in:
Faith Ekstrand 2026-02-06 00:26:04 -05:00 • committed by Dylan Baker
parent fb85bd341c
commit 0109cfc760
2 changed files with 3 additions and 1 deletions
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2
.pick_status.json
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@ -874,7 +874,7 @@
"description": "pan/bi: Run lower_alu_width after opt_algebraic_late",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

2
src/panfrost/compiler/bifrost_compile.c
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@ -5544,6 +5544,7 @@ bi_optimize_nir(nir_shader *nir, unsigned gpu_id, nir_variable_mode robust2_mode
while (late_algebraic) {
late_algebraic = false;
NIR_PASS(late_algebraic, nir, nir_opt_algebraic_late);
NIR_PASS(_, nir, nir_lower_alu_width, bi_vectorize_filter, &gpu_id);
NIR_PASS(_, nir, nir_opt_constant_folding);
NIR_PASS(_, nir, nir_copy_prop);
NIR_PASS(_, nir, nir_opt_dce);
@ -5570,6 +5571,7 @@ bi_optimize_nir(nir_shader *nir, unsigned gpu_id, nir_variable_mode robust2_mode
while (late_algebraic) {
late_algebraic = false;
NIR_PASS(late_algebraic, nir, nir_opt_algebraic_late);
NIR_PASS(_, nir, nir_lower_alu_width, bi_vectorize_filter, &gpu_id);
NIR_PASS(_, nir, nir_opt_constant_folding);
NIR_PASS(_, nir, nir_copy_prop);
NIR_PASS(_, nir, nir_opt_dce);