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emit_arm64_packed: Implement halving add sub exchange

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Merry 2022-07-27 19:50:29 +01:00 committed by merry
parent ff34f4c6ae
commit d1909c5efb
1 changed files with 19 additions and 21 deletions
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40
src/dynarmic/backend/arm64/emit_arm64_packed.cpp
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@ -197,7 +197,7 @@ void EmitIR<IR::Opcode::PackedSubS16>(oaknut::CodeGenerator& code, EmitContext&
}
}
template<bool add_is_hi, bool is_signed>
template<bool add_is_hi, bool is_signed, bool is_halving>
static void EmitPackedAddSub(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
const auto ge_inst = inst->GetAssociatedPseudoOperation(IR::Opcode::GetGEFromOp);
@ -222,7 +222,17 @@ static void EmitPackedAddSub(oaknut::CodeGenerator& code, EmitContext& ctx, IR::
code.SUB(V1.S2(), V1.S2(), V2.S2());
code.SUB(Vresult->S2(), V0.S2(), V1.S2());
if (is_halving) {
if (is_signed) {
code.SSHR(Vresult->S2(), Vresult->S2(), 1);
} else {
code.USHR(Vresult->S2(), Vresult->S2(), 1);
}
}
if (ge_inst) {
ASSERT(!is_halving);
auto Vge = ctx.reg_alloc.WriteD(ge_inst);
RegAlloc::Realize(Vge);
@ -236,22 +246,22 @@ static void EmitPackedAddSub(oaknut::CodeGenerator& code, EmitContext& ctx, IR::
template<>
void EmitIR<IR::Opcode::PackedAddSubU16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
EmitPackedAddSub<true, false>(code, ctx, inst);
EmitPackedAddSub<true, false, false>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedAddSubS16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
EmitPackedAddSub<true, true>(code, ctx, inst);
EmitPackedAddSub<true, true, false>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedSubAddU16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
EmitPackedAddSub<false, false>(code, ctx, inst);
EmitPackedAddSub<false, false, false>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedSubAddS16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
EmitPackedAddSub<false, true>(code, ctx, inst);
EmitPackedAddSub<false, true, false>(code, ctx, inst);
}
template<>
@ -320,34 +330,22 @@ void EmitIR<IR::Opcode::PackedHalvingSubS16>(oaknut::CodeGenerator& code, EmitCo
template<>
void EmitIR<IR::Opcode::PackedHalvingAddSubU16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<true, false, true>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedHalvingAddSubS16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<true, true, true>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedHalvingSubAddU16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<false, false, true>(code, ctx, inst);
}
template<>
void EmitIR<IR::Opcode::PackedHalvingSubAddS16>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code;
(void)ctx;
(void)inst;
ASSERT_FALSE("Unimplemented");
EmitPackedAddSub<false, true, true>(code, ctx, inst);
}
template<>