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Switch LOG2/EX2 from x87 to SSE (adjusted from Citra)

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Co-Authored-By: merry <8682882+merryhime@users.noreply.github.com>
Co-Authored-By: Wunk <wunkolo@gmail.com>
This commit is contained in:
wheremyfoodat 2023-07-16 01:34:59 +03:00
parent 0b7e63c5b6
commit f43c252e55
2 changed files with 252 additions and 50 deletions
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23
include/PICA/dynapica/shader_rec_emitter_x64.hpp
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@ -40,6 +40,15 @@ class ShaderEmitter : public Xbyak::CodeGenerator {
bool haveAVX = false; // Shows if the CPU supports AVX (NOT AVX2, NOT AVX512. Regular AVX)
bool haveFMA3 = false; // Shows if the CPU supports FMA3
// Shows whether the loaded shader has any log2 and exp2 instructions
bool codeHasLog2 = false;
bool codeHasExp2 = false;
Xbyak::Label log2Func, exp2Func;
Xbyak::Label emitLog2Func();
Xbyak::Label emitExp2Func();
Xbyak::util::Cpu cpuCaps;
// Compile all instructions from [current recompiler PC, end)
void compileUntil(const PICAShader& shaderUnit, u32 endPC);
// Compile instruction "instr"
@ -49,8 +58,10 @@ class ShaderEmitter : public Xbyak::CodeGenerator {
const u32 opcode = instruction >> 26;
return (opcode == ShaderOpcodes::CALL) || (opcode == ShaderOpcodes::CALLC) || (opcode == ShaderOpcodes::CALLU);
}
// Scan the shader code for call instructions to fill up the returnPCs vector before starting compilation
void scanForCalls(const PICAShader& shaderUnit);
// We also scan for log2/exp2 instructions to see whether to emit the relevant functions
void scanCode(const PICAShader& shaderUnit);
// Load register with number "srcReg" indexed by index "idx" into the xmm register "reg"
template <int sourceIndex>
@ -113,13 +124,13 @@ public:
// Initialize our emitter with "allocSize" bytes of RWX memory
ShaderEmitter() : Xbyak::CodeGenerator(allocSize) {
const auto cpu = Xbyak::util::Cpu();
cpuCaps = Xbyak::util::Cpu();
haveSSE4_1 = cpu.has(Xbyak::util::Cpu::tSSE41);
haveAVX = cpu.has(Xbyak::util::Cpu::tAVX);
haveFMA3 = cpu.has(Xbyak::util::Cpu::tFMA);
haveSSE4_1 = cpuCaps.has(Xbyak::util::Cpu::tSSE41);
haveAVX = cpuCaps.has(Xbyak::util::Cpu::tAVX);
haveFMA3 = cpuCaps.has(Xbyak::util::Cpu::tFMA);
if (!cpu.has(Xbyak::util::Cpu::tSSE3)) {
if (!cpuCaps.has(Xbyak::util::Cpu::tSSE3)) {
Helpers::panic("This CPU does not support SSE3. Please use the shader interpreter instead");
}
}