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PPU LLVM: Implement inline __add_get_ov

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Nekotekina 2021-01-24 15:13:01 +03:00
parent f9ee8978ff
commit 382509d778
1 changed files with 8 additions and 1 deletions
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9
rpcs3/Emu/Cell/PPUTranslator.cpp
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@ -2961,8 +2961,15 @@ void PPUTranslator::ADD(ppu_opcode_t op)
const auto b = GetGpr(op.rb);
const auto result = m_ir->CreateAdd(a, b);
SetGpr(op.rd, result);
if (op.oe)
{
//const auto s = m_ir->CreateCall(get_intrinsic<u64>(llvm::Intrinsic::sadd_with_overflow), {a, b});
//SetOverflow(m_ir->CreateExtractValue(s, {1}));
SetOverflow(m_ir->CreateICmpSLT(m_ir->CreateAnd(m_ir->CreateXor(a, m_ir->CreateNot(b)), m_ir->CreateXor(a, result)), m_ir->getInt64(0)));
}
if (op.rc) SetCrFieldSignedCmp(0, result, m_ir->getInt64(0));
if (op.oe) SetOverflow(Call(GetType<bool>(), m_pure_attr, "__add_get_ov", a, b));
}
void PPUTranslator::DCBT(ppu_opcode_t op)