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A64: Implement SQNEG's scalar and vector variant

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Lioncash 2018-09-06 16:47:27 -04:00 • committed by MerryMage
parent fca7eddb9e
commit 740ffa52ae
3 changed files with 27 additions and 2 deletions
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15
src/frontend/A64/translate/impl/simd_two_register_misc.cpp
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@ -614,6 +614,21 @@ bool TranslatorVisitor::SQABS_2(bool Q, Imm<2> size, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::SQNEG_2(bool Q, Imm<2> size, Vec Vn, Vec Vd) {
if (size == 0b11 && !Q) {
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t datasize = Q ? 128 : 64;
const IR::U128 operand = V(datasize, Vn);
const IR::U128 result = ir.VectorSignedSaturatedNeg(esize, operand);
V(datasize, Vd, result);
return true;
}
bool TranslatorVisitor::SADALP(bool Q, Imm<2> size, Vec Vn, Vec Vd) {
return PairedAddLong(*this, Q, size, Vn, Vd, Signedness::Signed, PairedAddLongExtraBehavior::Accumulate);
}