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https://git.eden-emu.dev/eden-emu/eden
synced 2026-04-10 03:18:55 +02:00
[dynarmic] proper LUT implementation
Signed-off-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie
parent
501b884661
commit
69ac655a62
5 changed files with 29 additions and 81 deletions
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@ -59,7 +59,6 @@ add_library(dynarmic STATIC
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common/fp/util.h
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common/llvm_disassemble.cpp
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common/llvm_disassemble.h
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common/lut_from_list.h
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common/math_util.cpp
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common/math_util.h
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common/safe_ops.h
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@ -1,4 +1,4 @@
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// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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/* This file is part of the dynarmic project.
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@ -25,7 +25,6 @@
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#include "dynarmic/common/fp/info.h"
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#include "dynarmic/common/fp/op.h"
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#include "dynarmic/common/fp/rounding_mode.h"
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#include "dynarmic/common/lut_from_list.h"
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#include "dynarmic/ir/basic_block.h"
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#include "dynarmic/ir/microinstruction.h"
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#include "dynarmic/ir/opcodes.h"
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@ -25,7 +25,6 @@
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#include "dynarmic/common/fp/info.h"
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#include "dynarmic/common/fp/op.h"
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#include "dynarmic/common/fp/rounding_mode.h"
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#include "dynarmic/common/lut_from_list.h"
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#include "dynarmic/interface/optimization_flags.h"
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#include "dynarmic/ir/basic_block.h"
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#include "dynarmic/ir/microinstruction.h"
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@ -26,7 +26,6 @@
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#include "dynarmic/common/fp/op.h"
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#include "dynarmic/common/fp/rounding_mode.h"
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#include "dynarmic/common/fp/util.h"
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#include "dynarmic/common/lut_from_list.h"
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#include "dynarmic/interface/optimization_flags.h"
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#include "dynarmic/ir/basic_block.h"
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#include "dynarmic/ir/microinstruction.h"
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@ -1986,6 +1985,13 @@ void EmitX64::EmitFPVectorToHalf32(EmitContext& ctx, IR::Inst* inst) {
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// output[i] = FPT(FP::FPToFixed<FPT>(fsize, input[i], fbits, unsigned_, fpcr, rounding_mode, fpsr));
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// }
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template<size_t fsize, bool unsigned_, FP::RoundingMode rounding_mode, size_t fbits>
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static void EmitFPVectorToFixedThunk(VectorArray<mcl::unsigned_integer_of_size<fsize>>& output, const VectorArray<mcl::unsigned_integer_of_size<fsize>>& input, FP::FPCR fpcr, FP::FPSR& fpsr) {
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using FPT = mcl::unsigned_integer_of_size<fsize>;
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for (size_t i = 0; i < output.size(); ++i)
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output[i] = FPT(FP::FPToFixed<FPT>(fsize, input[i], fbits, unsigned_, fpcr, rounding_mode, fpsr));
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}
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template<size_t fsize, bool unsigned_>
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void EmitFPVectorToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
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const size_t fbits = inst->GetArg(1).GetU8();
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@ -2107,29 +2113,29 @@ void EmitFPVectorToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
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ctx.reg_alloc.DefineValue(code, inst, src);
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return;
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}
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auto const fpt_fn = [fbits, rounding]{
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#define ROUNDING_MODE(CASE) \
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else if (rounding == FP::RoundingMode::CASE && fsize == 8 && fbits == 8) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 8>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 16 && fbits == 8) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 8>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 16 && fbits == 16) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 16>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 32 && fbits == 8) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 8>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 32 && fbits == 16) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 16>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 32 && fbits == 32) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 32>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 64 && fbits == 8) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 8>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 64 && fbits == 16) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 16>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 64 && fbits == 32) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 32>; \
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else if (rounding == FP::RoundingMode::CASE && fsize == 64 && fbits == 64) return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::CASE, 64>;
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using fbits_list = mp::lift_sequence<std::make_index_sequence<fsize + 1>>;
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using rounding_list = mp::list<
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mp::lift_value<FP::RoundingMode::ToNearest_TieEven>,
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mp::lift_value<FP::RoundingMode::TowardsPlusInfinity>,
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mp::lift_value<FP::RoundingMode::TowardsMinusInfinity>,
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mp::lift_value<FP::RoundingMode::TowardsZero>,
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mp::lift_value<FP::RoundingMode::ToNearest_TieAwayFromZero>>;
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if (false) { /* ... */ }
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ROUNDING_MODE(ToNearest_TieEven)
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ROUNDING_MODE(TowardsPlusInfinity)
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ROUNDING_MODE(TowardsMinusInfinity)
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ROUNDING_MODE(TowardsZero)
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ROUNDING_MODE(ToNearest_TieAwayFromZero)
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else return &EmitFPVectorToFixedThunk<fsize, unsigned_, FP::RoundingMode::TowardsZero, 64>;
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}();
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static const auto lut = Common::GenerateLookupTableFromList([]<typename I>(I) {
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using FPT = mcl::unsigned_integer_of_size<fsize>; // WORKAROUND: For issue 678 on MSVC
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return std::pair{
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mp::lower_to_tuple_v<I>,
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Common::FptrCast([](VectorArray<FPT>& output, const VectorArray<FPT>& input, FP::FPCR fpcr, FP::FPSR& fpsr) {
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constexpr size_t fbits = mp::get<0, I>::value;
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constexpr FP::RoundingMode rounding_mode = mp::get<1, I>::value;
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for (size_t i = 0; i < output.size(); ++i)
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output[i] = FPT(FP::FPToFixed<FPT>(fsize, input[i], fbits, unsigned_, fpcr, rounding_mode, fpsr));
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})
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};
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}, mp::cartesian_product<fbits_list, rounding_list>{});
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EmitTwoOpFallback<3>(code, ctx, inst, lut.at(std::make_tuple(fbits, rounding)));
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EmitTwoOpFallback<3>(code, ctx, inst, fpt_fn);
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}
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void EmitX64::EmitFPVectorToSignedFixed16(EmitContext& ctx, IR::Inst* inst) {
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@ -1,55 +0,0 @@
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// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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/* This file is part of the dynarmic project.
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* Copyright (c) 2018 MerryMage
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* SPDX-License-Identifier: 0BSD
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*/
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#pragma once
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#include <initializer_list>
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#include <map>
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#include <type_traits>
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#include <mcl/mp/metafunction/apply.hpp>
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#include <mcl/mp/typelist/list.hpp>
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#include <mcl/type_traits/is_instance_of_template.hpp>
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#ifdef _MSC_VER
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# include <mcl/mp/typelist/head.hpp>
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#endif
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namespace Dynarmic::Common {
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// prevents this function from printing 56,000 character warning messages
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#ifdef __GNUC__
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wno-stack-usage"
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#endif
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#ifdef __clang__
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wno-stack-usage"
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#endif
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template<typename Function, typename... Values>
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inline auto GenerateLookupTableFromList(Function f, mcl::mp::list<Values...>) {
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#ifdef _MSC_VER
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using PairT = std::invoke_result_t<Function, mcl::mp::head<mcl::mp::list<Values...>>>;
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#else
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using PairT = std::common_type_t<std::invoke_result_t<Function, Values>...>;
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#endif
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using MapT = mcl::mp::apply<std::map, PairT>;
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static_assert(mcl::is_instance_of_template_v<std::pair, PairT>);
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const std::initializer_list<PairT> pair_array{f(Values{})...};
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return MapT(pair_array.begin(), pair_array.end());
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}
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#ifdef __GNUC__
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#pragma GCC diagnostic pop
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#endif
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#ifdef __clang__
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#pragma clang diagnostic pop
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#endif
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} // namespace Dynarmic::Common
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