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aco: implement 64-bit sgpr swaps

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Totals from 6726 (5.36% of 125503) affected shaders:
CodeSize: 74680952 -> 74102228 (-0.77%)
Instrs: 14551507 -> 14406001 (-1.00%)
Cycles: 1748272436 -> 1690173104 (-3.32%)
VMEM: 964671 -> 964058 (-0.06%)
Copies: 1993312 -> 1847806 (-7.30%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4469>
This commit is contained in:
Rhys Perry 2020-04-17 14:33:34 +01:00 • committed by Marge Bot
parent 2ab45f41e0
commit f13049f48a
1 changed files with 10 additions and 1 deletions
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11
src/amd/compiler/aco_lower_to_hw_instr.cpp
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@ -818,7 +818,7 @@ void do_swap(lower_context *ctx, Builder& bld, const copy_operation& copy, bool
for (; offset < copy.bytes;) {
Definition def;
Operand op;
split_copy(offset, &def, &op, copy, true, 4);
split_copy(offset, &def, &op, copy, true, 8);
assert(op.regClass() == def.regClass());
Operand def_as_op = Operand(def.physReg(), def.regClass());
@ -852,6 +852,15 @@ void do_swap(lower_context *ctx, Builder& bld, const copy_operation& copy, bool
bld.sop2(aco_opcode::s_xor_b32, op_as_def, Definition(scc, s1), op, def_as_op);
}
ctx->program->statistics[statistic_copies] += 3;
} else if (def.regClass() == s2) {
if (preserve_scc)
bld.sop1(aco_opcode::s_mov_b32, Definition(pi->scratch_sgpr, s1), Operand(scc, s1));
bld.sop2(aco_opcode::s_xor_b64, op_as_def, Definition(scc, s1), op, def_as_op);
bld.sop2(aco_opcode::s_xor_b64, def, Definition(scc, s1), op, def_as_op);
bld.sop2(aco_opcode::s_xor_b64, op_as_def, Definition(scc, s1), op, def_as_op);
if (preserve_scc)
bld.sopc(aco_opcode::s_cmp_lg_i32, Definition(scc, s1), Operand(pi->scratch_sgpr, s1), Operand(0u));
ctx->program->statistics[statistic_copies] += 3;
} else if (ctx->program->chip_class >= GFX9 && def.bytes() == 2 && def.physReg().reg() == op.physReg().reg()) {
aco_ptr<VOP3P_instruction> vop3p{create_instruction<VOP3P_instruction>(aco_opcode::v_pk_add_u16, Format::VOP3P, 2, 1)};
vop3p->operands[0] = Operand(PhysReg{op.physReg().reg()}, v1);