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agx: Always use hash table for extracts 

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16268>
This commit is contained in:
Alyssa Rosenzweig 2022-04-13 22:15:06 -04:00 committed by Alyssa Rosenzweig
parent 860832e41b
commit 6a4d742369
1 changed files with 7 additions and 11 deletions
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18
src/asahi/compiler/agx_compile.c
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@ -62,13 +62,10 @@ agx_index_to_key(agx_index idx)
}
/*
* Extract a single channel out of a vector source. This corresponds to the
* pseduo-instruction p_extract, which gets lowered to a move after
* register-allocation.
*
* However, if the vector was split (with p_split), we can use the split
* components directly, without emitting a machine instruction. This has
* advantages of RA, as the split can be optimized away.
* Extract a single channel out of a vector source. We split vectors with
* p_split so we can use the split components directly, without emitting a
* machine instruction. This has advantages of RA, as the split can usually be
* optimized away.
*/
static agx_index
agx_emit_extract(agx_builder *b, agx_index vec, unsigned channel)
@ -76,10 +73,9 @@ agx_emit_extract(agx_builder *b, agx_index vec, unsigned channel)
agx_index *components = _mesa_hash_table_u64_search(b->shader->allocated_vec,
agx_index_to_key(vec));
if (components)
return components[channel];
else
return agx_p_extract(b, vec, channel);
assert(components != NULL && "missing agx_emit_combine_to");
return components[channel];
}
static void