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fixes for dynarmic on higher batch sizes

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This commit is contained in:
lizzie 2026-03-17 23:37:47 +00:00
parent 5146e41b80
commit cbd9d7a421
4 changed files with 8 additions and 15 deletions
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2
src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
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@ -6,6 +6,8 @@
* SPDX-License-Identifier: 0BSD * SPDX-License-Identifier: 0BSD
*/ */
#pragma once
#include <bit> #include <bit>
#include "dynarmic/backend/x64/xbyak.h" #include "dynarmic/backend/x64/xbyak.h"

6
src/dynarmic/src/dynarmic/common/fp/fused.cpp
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@ -32,7 +32,7 @@ FPUnpacked FusedMulAdd(FPUnpacked addend, FPUnpacked op1, FPUnpacked op2) {
return std::make_tuple(exponent, value); return std::make_tuple(exponent, value);
}(); }();
if (product_value == 0) { if (product_value == u128(0, 0)) {
return addend; return addend;
} }
@ -52,13 +52,13 @@ FPUnpacked FusedMulAdd(FPUnpacked addend, FPUnpacked op1, FPUnpacked op2) {
} }
// addend < product // addend < product
const u128 result = product_value + StickyLogicalShiftRight(addend.mantissa, exp_diff - normalized_point_position); const u128 result = product_value + StickyLogicalShiftRight(u128(addend.mantissa, 0), exp_diff - normalized_point_position);
return ReduceMantissa(product_sign, product_exponent, result); return ReduceMantissa(product_sign, product_exponent, result);
} }
// Subtraction // Subtraction
const u128 addend_long = u128(addend.mantissa) << normalized_point_position; const u128 addend_long = u128(addend.mantissa, 0) << normalized_point_position;
bool result_sign; bool result_sign;
u128 result; u128 result;

2
src/dynarmic/src/dynarmic/common/u128.cpp
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@ -137,7 +137,7 @@ u128 StickyLogicalShiftRight(u128 operand, int amount) {
} }
if (operand.lower != 0 || operand.upper != 0) { if (operand.lower != 0 || operand.upper != 0) {
return u128(1); return u128(1, 0);
} }
return {}; return {};
} }

13
src/dynarmic/src/dynarmic/common/u128.h
View file

@ -23,22 +23,13 @@ struct u128 {
u128(u128&&) = default; u128(u128&&) = default;
u128& operator=(const u128&) = default; u128& operator=(const u128&) = default;
u128& operator=(u128&&) = default; u128& operator=(u128&&) = default;
explicit u128(u64 lower_, u64 upper_) : lower(lower_), upper(upper_) {}
u128(u64 lower_, u64 upper_)
: lower(lower_), upper(upper_) {}
template<typename T>
/* implicit */ u128(T value)
: lower(value), upper(0) {
static_assert(std::is_integral_v<T>);
static_assert(mcl::bitsizeof<T> <= mcl::bitsizeof<u64>);
}
u64 lower = 0; u64 lower = 0;
u64 upper = 0; u64 upper = 0;
template<size_t bit_position> template<size_t bit_position>
bool Bit() const { [[nodiscard]] inline bool Bit() const {
static_assert(bit_position < 128); static_assert(bit_position < 128);
if constexpr (bit_position < 64) { if constexpr (bit_position < 64) {
return mcl::bit::get_bit<bit_position>(lower); return mcl::bit::get_bit<bit_position>(lower);