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r300: fuse ROUND and ARL to ARR

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Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com>
Reviewed-by: Filip Gawin <filip.gawin@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23419>
This commit is contained in:
Pavel Ondračka
2023-06-03 14:20:05 +02:00
committed by Marge Bot
parent 8bc7d71c23
commit 5404c71e8a
1 changed files with 29 additions and 0 deletions
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src/gallium/drivers/r300/compiler/radeon_program_alu.c
+29
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@@ -37,6 +37,7 @@
#include "radeon_compiler.h"
#include "radeon_compiler_util.h"
#include "radeon_dataflow.h"
#include "util/log.h"
@@ -446,6 +447,33 @@ static void transform_ROUND(struct radeon_compiler* c,
rc_remove_instruction(inst);
}
/**
* According to the GLSL spec, round is only 1.30 and up
* so the only reason why we should ever see round is if it actually
* is lowered ARR (from nine->ttn). In that case we want to reconstruct
* the ARR instead of lowering the round.
*/
static void transform_vertex_ROUND(struct radeon_compiler* c,
struct rc_instruction* inst)
{
struct rc_reader_data readers;
rc_get_readers(c, inst, &readers, NULL, NULL, NULL);
assert(readers.ReaderCount > 0);
for (unsigned i = 0; i < readers.ReaderCount; i++) {
struct rc_instruction *reader = readers.Readers[i].Inst;
if (reader->U.I.Opcode != RC_OPCODE_ARL)
return;
}
/* Only ARL readers, convert all to ARR */
for (unsigned i = 0; i < readers.ReaderCount; i++) {
readers.Readers[i].Inst->U.I.Opcode = RC_OPCODE_ARR;
}
/* Switch ROUND to MOV and let copy propagate sort it out later. */
inst->U.I.Opcode = RC_OPCODE_MOV;
}
static void transform_RSQ(struct radeon_compiler* c,
struct rc_instruction* inst)
{
@@ -832,6 +860,7 @@ int r300_transform_vertex_alu(
case RC_OPCODE_FLR: transform_FLR(c, inst); return 1;
case RC_OPCODE_LIT: transform_r300_vertex_fix_LIT(c, inst); return 1;
case RC_OPCODE_LRP: transform_LRP(c, inst); return 1;
case RC_OPCODE_ROUND: transform_vertex_ROUND(c, inst); return 1;
case RC_OPCODE_SEQ:
if (!c->is_r500) {
transform_r300_vertex_SEQ(c, inst);