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A64: Implement SMLSL{2}

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This commit is contained in:
Lioncash
2018-05-15 10:50:28 -04:00
committed by MerryMage
parent ada5c0b2fa
commit 3576c02d91
2 changed files with 14 additions and 1 deletions
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13
src/frontend/A64/translate/impl/simd_three_different.cpp
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@@ -39,6 +39,7 @@ void AbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, V
enum class MultiplyLongBehavior {
None,
Accumulate,
Subtract
};
void MultiplyLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
@@ -55,6 +56,9 @@ void MultiplyLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec
if (behavior == MultiplyLongBehavior::Accumulate) {
const IR::U128 addend = v.V(doubled_datasize, Vd);
result = v.ir.VectorAdd(doubled_esize, addend, result);
} else if (behavior == MultiplyLongBehavior::Subtract) {
const IR::U128 minuend = v.V(doubled_datasize, Vd);
result = v.ir.VectorSub(doubled_esize, minuend, result);
}
v.V(doubled_datasize, Vd, result);
@@ -120,6 +124,15 @@ bool TranslatorVisitor::SMLAL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::SMLSL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Subtract);
return true;
}
bool TranslatorVisitor::SMULL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();