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agx: Pull out agx_write_components

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11718>
This commit is contained in:
Alyssa Rosenzweig
2021-06-19 13:23:25 -04:00
committed by Marge Bot
parent f49ba0874a
commit ebd25e7ee7
1 changed files with 18 additions and 4 deletions
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src/asahi/compiler/agx_register_allocate.c
+18 -4
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@@ -30,6 +30,23 @@
* TODO: Handle phi nodes.
*/
/** Returns number of components written by an instruction */
static unsigned
agx_write_components(agx_instr *I)
{
switch (I->op) {
case AGX_OPCODE_LD_VARY:
case AGX_OPCODE_DEVICE_LOAD:
case AGX_OPCODE_TEXTURE_SAMPLE:
case AGX_OPCODE_LD_TILE:
return 4;
case AGX_OPCODE_LD_VARY_FLAT:
return 3;
default:
return 1;
}
}
void
agx_ra(agx_context *ctx)
{
@@ -90,10 +107,7 @@ agx_ra(agx_context *ctx)
unsigned size = ins->dest[d].size == AGX_SIZE_32 ? 2 : 1;
if (size == 2 && usage & 1) usage++;
unsigned v = usage;
unsigned comps = (ins->op == AGX_OPCODE_LD_VARY || ins->op == AGX_OPCODE_DEVICE_LOAD || ins->op == AGX_OPCODE_TEXTURE_SAMPLE || ins->op == AGX_OPCODE_LD_TILE) ? 4 :
(ins->op == AGX_OPCODE_LD_VARY_FLAT) ? 3 :
1; // todo systematic
usage += comps * size;
usage += agx_write_components(ins) * size;
alloc[ins->dest[d].value] = v;
ins->dest[d] = agx_replace_index(ins->dest[d], agx_register(v, ins->dest[d].size));
}