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lima: ppir: fix store_output optimization for modifiers

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If the mov node being handled here has modifiers, it cannot be
trivially removed. This happens in some shaders, so handle it
in the identity mov check for that optimization.

Fixes: d6987daef9 ("lima: ppir: introduce an optimizer")

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36490>
(cherry picked from commit 3020d27326)
This commit is contained in:
Erico Nunes 2025-07-31 11:49:49 +02:00 • committed by Eric Engestrom
parent d2918b7b86
commit 1c324487ac
2 changed files with 8 additions and 1 deletions
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2
.pick_status.json
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@ -6904,7 +6904,7 @@
"description": "lima: ppir: fix store_output optimization for modifiers",
"nominated": true,
"nomination_type": 2,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": "d6987daef983c53e44128d71508061cf65bc6487",
"notes": null

7
src/gallium/drivers/lima/ir/pp/opt.c
View file

@ -138,6 +138,13 @@ static bool ppir_node_is_identity_reg_mov(ppir_node *node)
if (src->type != ppir_target_register)
return false;
if (src->absolute || src->negate)
return false;
ppir_dest *dest = ppir_node_get_dest(node);
if (dest->modifier != ppir_outmod_none)
return false;
return ppir_src_swizzle_is_identity(ppir_node_get_src(node, 0));
}