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SPU LLVM: rewrite comparison on non-xfloat path of CFLTU, CFLTS

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CFLTU on non-xfloat path is accurate as xfloat path now.
* Also optimize FCTIW like FCTIWZ (PPU)
This commit is contained in:
Eladash 2019-10-25 11:03:49 +03:00 • committed by Ivan
parent ef8872c0d7
commit 923cd7ad72
3 changed files with 10 additions and 8 deletions
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6
rpcs3/Emu/Cell/PPUInterpreter.cpp
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@ -4832,9 +4832,9 @@ bool ppu_interpreter::FCMPU(ppu_thread& ppu, ppu_opcode_t op)
bool ppu_interpreter::FCTIW(ppu_thread& ppu, ppu_opcode_t op)
{
const f64 b = ppu.fpr[op.frb];
const s32 res = b >= f64(INT32_MAX) ? INT32_MAX : _mm_cvtsd_si32(_mm_load_sd(&b));
ppu.fpr[op.frd] = std::bit_cast<f64, s64>(res);
const auto b = _mm_load_sd(&ppu.fpr[op.frb]);
const auto res = _mm_xor_si128(_mm_cvtpd_epi32(b), _mm_castpd_si128(_mm_cmpge_pd(b, _mm_set1_pd(0x80000000))));
ppu.fpr[op.frd] = std::bit_cast<f64, s64>(_mm_cvtsi128_si32(res));
if (UNLIKELY(op.rc)) fmt::throw_exception("%s: op.rc", __func__); //ppu_cr_set(ppu, 1, ppu.fpscr.fg, ppu.fpscr.fl, ppu.fpscr.fe, ppu.fpscr.fu);
return true;
}