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agx/lower_address: Handle 8-bit load/store

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Should work ok with the implicit up-conversion that the backend does.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21643>
This commit is contained in:
Alyssa Rosenzweig 2023-03-03 15:25:42 -05:00 • committed by Marge Bot
parent 5865e23a07
commit 4bd0e1d097
1 changed files with 16 additions and 6 deletions
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22
src/asahi/compiler/agx_nir_lower_address.c
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@ -164,6 +164,21 @@ match_address(nir_builder *b, nir_ssa_scalar base, int8_t format_shift)
return match;
}
static enum pipe_format
format_for_bitsize(unsigned bitsize)
{
switch (bitsize) {
case 8:
return PIPE_FORMAT_R8_UINT;
case 16:
return PIPE_FORMAT_R16_UINT;
case 32:
return PIPE_FORMAT_R32_UINT;
default:
unreachable("should have been lowered");
}
}
static bool
pass(struct nir_builder *b, nir_instr *instr, UNUSED void *data)
{
@ -181,12 +196,7 @@ pass(struct nir_builder *b, nir_instr *instr, UNUSED void *data)
unsigned bitsize = intr->intrinsic == nir_intrinsic_store_global
? nir_src_bit_size(intr->src[0])
: nir_dest_bit_size(intr->dest);
/* TODO: Handle more sizes */
assert(bitsize == 16 || bitsize == 32);
enum pipe_format format =
bitsize == 32 ? PIPE_FORMAT_R32_UINT : PIPE_FORMAT_R16_UINT;
enum pipe_format format = format_for_bitsize(bitsize);
unsigned format_shift = util_logbase2(util_format_get_blocksize(format));
nir_src *orig_offset = nir_get_io_offset_src(intr);