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A64: Implement USUBW/USUBW2

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Lioncash 2018-04-02 19:46:20 -04:00 • committed by MerryMage
parent e20fce6b5a
commit 84d49309b9
3 changed files with 19 additions and 2 deletions
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17
src/frontend/A64/translate/impl/simd_three_different.cpp
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@ -57,4 +57,21 @@ bool TranslatorVisitor::UADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::USUBW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = V(128, Vn);
const IR::U128 operand2 = ir.VectorZeroExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorSub(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
}
} // namespace Dynarmic::A64