mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-05 04:38:23 -05:00
152 lines
4.0 KiB
C++
Executable File
152 lines
4.0 KiB
C++
Executable File
/* This file is part of the dynarmic project.
|
|
* Copyright (c) 2021 MerryMage
|
|
* SPDX-License-Identifier: 0BSD
|
|
*/
|
|
|
|
#include <catch2/catch.hpp>
|
|
#include <fmt/printf.h>
|
|
|
|
#include "dynarmic/common/common_types.h"
|
|
#include "dynarmic/common/fp/fpcr.h"
|
|
#include "dynarmic/common/fp/fpsr.h"
|
|
#include "dynarmic/common/fp/op/FPRSqrtEstimate.h"
|
|
|
|
extern "C" u32 rsqrt_inaccurate(u32);
|
|
extern "C" u32 rsqrt_full(u32);
|
|
extern "C" u32 rsqrt_full_gpr(u32);
|
|
extern "C" u32 rsqrt_full_nb(u32);
|
|
extern "C" u32 rsqrt_full_nb2(u32);
|
|
extern "C" u32 rsqrt_full_nb_gpr(u32);
|
|
extern "C" u32 rsqrt_newton(u32);
|
|
extern "C" u32 rsqrt_hack(u32);
|
|
|
|
using namespace Dynarmic;
|
|
|
|
extern "C" u32 rsqrt_fallback(u32 value) {
|
|
FP::FPCR fpcr;
|
|
FP::FPSR fpsr;
|
|
return FP::FPRSqrtEstimate(value, fpcr, fpsr);
|
|
}
|
|
extern "C" u32 _rsqrt_fallback(u32 value) {
|
|
return rsqrt_fallback(value);
|
|
}
|
|
|
|
void Test(u32 value) {
|
|
FP::FPCR fpcr;
|
|
FP::FPSR fpsr;
|
|
|
|
const u32 expect = FP::FPRSqrtEstimate(value, fpcr, fpsr);
|
|
const u32 full = rsqrt_full(value);
|
|
const u32 full_gpr = rsqrt_full_gpr(value);
|
|
const u32 newton = rsqrt_newton(value);
|
|
const u32 hack = rsqrt_hack(value);
|
|
|
|
if (expect != full || expect != full_gpr || expect != newton || expect != hack) {
|
|
fmt::print("{:08x} = {:08x} : {:08x} : {:08x} : {:08x} : {:08x}\n", value, expect, full, full_gpr, newton, hack);
|
|
|
|
REQUIRE(expect == full);
|
|
REQUIRE(expect == full_gpr);
|
|
REQUIRE(expect == newton);
|
|
REQUIRE(expect == hack);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("RSqrt Tests", "[fp][.]") {
|
|
Test(0x00000000);
|
|
Test(0x80000000);
|
|
Test(0x7f8b7201);
|
|
Test(0x7f800000);
|
|
Test(0x7fc00000);
|
|
Test(0xff800000);
|
|
Test(0xffc00000);
|
|
Test(0xff800001);
|
|
|
|
for (u64 i = 0; i < 0x1'0000'0000; i++) {
|
|
const u32 value = static_cast<u32>(i);
|
|
Test(value);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("Benchmark RSqrt", "[fp][.]") {
|
|
BENCHMARK("Inaccurate") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_inaccurate(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("Full divss") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_full(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("Full divss (GPR)") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_full_gpr(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("Full divss (NB)") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_full_nb(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("Full divss (NB2)") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_full_nb2(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("Full divss (NB + GPR)") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_full_nb_gpr(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("One Newton iteration") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_newton(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("Ugly Hack") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_hack(value);
|
|
}
|
|
return total;
|
|
};
|
|
|
|
BENCHMARK("Softfloat") {
|
|
u64 total = 0;
|
|
for (u64 i = 0; i < 0x1'0000'0000; i += 0x1234) {
|
|
const u32 value = static_cast<u32>(i);
|
|
total += rsqrt_fallback(value);
|
|
}
|
|
return total;
|
|
};
|
|
}
|