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emit_arm64_packed: Implement packed add sub exchange

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Merry 2022-07-26 21:14:26 +01:00 committed by merry
parent 0bd7601844
commit 5c54c7d968
1 changed files with 41 additions and 16 deletions
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57
src/dynarmic/backend/arm64/emit_arm64_packed.cpp
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@ -197,36 +197,61 @@ void EmitIR<IR::Opcode::PackedSubS16>(oaknut::CodeGenerator& code, EmitContext&
}
}
template<bool add_is_hi, bool is_signed>
static void EmitPackedAddSub(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
const auto ge_inst = inst->GetAssociatedPseudoOperation(IR::Opcode::GetGEFromOp);
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
auto Vresult = ctx.reg_alloc.WriteD(inst);
auto Va = ctx.reg_alloc.ReadD(args[0]);
auto Vb = ctx.reg_alloc.ReadD(args[1]);
RegAlloc::Realize(Vresult, Va, Vb);
if (is_signed) {
code.SXTL(V0.S4(), Va->H4());
code.SXTL(V1.S4(), Vb->H4());
} else {
code.UXTL(V0.S4(), Va->H4());
code.UXTL(V1.S4(), Vb->H4());
}
code.EXT(V1.B8(), V1.B8(), V1.B8(), 4);
code.MOVI(D2, oaknut::RepImm{add_is_hi ? 0b11110000 : 0b00001111});
code.EOR(V1.B8(), V1.B8(), V2.B8());
code.SUB(V1.S2(), V1.S2(), V2.S2());
code.SUB(Vresult->S2(), V0.S2(), V1.S2());
if (ge_inst) {
auto Vge = ctx.reg_alloc.WriteD(ge_inst);
RegAlloc::Realize(Vge);
code.CMEQ(Vge->H4(), Vresult->H4(), 0);
code.EOR(Vge->B8(), Vge->B8(), V2.B8());
code.SHRN(Vge->H4(), Vge->toQ().S4(), 16);
}
code.XTN(Vresult->H4(), Vresult->toQ().S4());
}
template<>
void EmitIR<IR::Opcode::PackedAddSubU16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<true, false>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedAddSubS16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<true, true>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedSubAddU16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<false, false>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedSubAddS16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<false, true>(code, ctx, inst);
}
template<>