KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

agx: Add helper to emit combines 

...in such a way that subsequent extracts will be optimized.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16268>
This commit is contained in:
Alyssa Rosenzweig 2022-04-12 20:44:20 -04:00
parent 5bc65ef963
commit b30c718a57
1 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
src/asahi/compiler/agx_compile.c
View File

@ -82,6 +82,36 @@ agx_emit_extract(agx_builder *b, agx_index vec, unsigned channel)
return agx_p_extract(b, vec, channel);
}
static void
agx_cache_combine(agx_builder *b, agx_index dst,
agx_index s0, agx_index s1, agx_index s2, agx_index s3)
{
/* Lifetime of a hash table entry has to be at least as long as the table */
agx_index *channels = ralloc_array(b->shader, agx_index, 4);
channels[0] = s0;
channels[1] = s1;
channels[2] = s2;
channels[3] = s3;
_mesa_hash_table_u64_insert(b->shader->allocated_vec, agx_index_to_key(dst),
channels);
}
/*
* Combine multiple scalars into a vector destination. This corresponds to
* p_combine, lowered to moves (a shuffle in general) after register allocation.
*
* To optimize vector extractions, we record the individual channels
*/
static agx_instr *
agx_emit_combine_to(agx_builder *b, agx_index dst,
agx_index s0, agx_index s1, agx_index s2, agx_index s3)
{
agx_cache_combine(b, dst, s0, s1, s2, s3);
return agx_p_combine_to(b, dst, s0, s1, s2, s3);
}
static void
agx_block_add_successor(agx_block *block, agx_block *successor)
{