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aco/optimizer: remove DS offset optimization

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37453>
This commit is contained in:
Daniel Schürmann 2025-09-18 09:05:52 +02:00 • committed by Marge Bot
parent dd68825feb
commit dbb20a4e23
1 changed files with 0 additions and 48 deletions
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48
src/amd/compiler/aco_optimizer.cpp
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@ -1521,54 +1521,6 @@ label_instruction(opt_ctx& ctx, aco_ptr<Instruction>& instr)
}
}
/* DS: combine additions */
else if (instr->isDS()) {
DS_instruction& ds = instr->ds();
Temp base;
uint32_t offset;
bool has_usable_ds_offset = ctx.program->gfx_level >= GFX7;
if (has_usable_ds_offset && i == 0 &&
parse_base_offset(ctx, instr.get(), i, &base, &offset, false) &&
base.regClass() == instr->operands[i].regClass() &&
instr->opcode != aco_opcode::ds_swizzle_b32 &&
instr->opcode != aco_opcode::ds_bvh_stack_push4_pop1_rtn_b32 &&
instr->opcode != aco_opcode::ds_bvh_stack_push8_pop1_rtn_b32 &&
instr->opcode != aco_opcode::ds_bvh_stack_push8_pop2_rtn_b64) {
if (instr->opcode == aco_opcode::ds_write2_b32 ||
instr->opcode == aco_opcode::ds_read2_b32 ||
instr->opcode == aco_opcode::ds_write2_b64 ||
instr->opcode == aco_opcode::ds_read2_b64 ||
instr->opcode == aco_opcode::ds_write2st64_b32 ||
instr->opcode == aco_opcode::ds_read2st64_b32 ||
instr->opcode == aco_opcode::ds_write2st64_b64 ||
instr->opcode == aco_opcode::ds_read2st64_b64) {
bool is64bit = instr->opcode == aco_opcode::ds_write2_b64 ||
instr->opcode == aco_opcode::ds_read2_b64 ||
instr->opcode == aco_opcode::ds_write2st64_b64 ||
instr->opcode == aco_opcode::ds_read2st64_b64;
bool st64 = instr->opcode == aco_opcode::ds_write2st64_b32 ||
instr->opcode == aco_opcode::ds_read2st64_b32 ||
instr->opcode == aco_opcode::ds_write2st64_b64 ||
instr->opcode == aco_opcode::ds_read2st64_b64;
unsigned shifts = (is64bit ? 3 : 2) + (st64 ? 6 : 0);
unsigned mask = BITFIELD_MASK(shifts);
if ((offset & mask) == 0 && ds.offset0 + (offset >> shifts) <= 255 &&
ds.offset1 + (offset >> shifts) <= 255) {
instr->operands[i].setTemp(base);
ds.offset0 += offset >> shifts;
ds.offset1 += offset >> shifts;
}
} else {
if (ds.offset0 + offset <= 65535) {
instr->operands[i].setTemp(base);
ds.offset0 += offset;
}
}
}
}
else if (instr->isBranch()) {
if (ctx.info[instr->operands[0].tempId()].is_scc_invert()) {
/* Flip the branch instruction to get rid of the scc_invert instruction */