Suyu/dynarmic
1
0
Fork 0
mirror of https://git.suyu.dev/suyu/dynarmic.git synced 2026-01-09 16:08:04 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

A64: Implement SMLAL{2}

Browse source
This commit is contained in:
Lioncash 2018-05-15 10:42:13 -04:00 • committed by MerryMage
parent 2d1aca25e6
commit ada5c0b2fa
2 changed files with 27 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

30
src/frontend/A64/translate/impl/simd_three_different.cpp
View file

@ -36,15 +36,28 @@ void AbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, V
v.V(2 * datasize, Vd, result);
}
void MultiplyLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
enum class MultiplyLongBehavior {
None,
Accumulate,
};
void MultiplyLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
MultiplyLongBehavior behavior) {
const size_t esize = 8 << size.ZeroExtend();
const size_t doubled_esize = 2 * esize;
const size_t datasize = 64;
const size_t doubled_datasize = datasize * 2;
const IR::U128 operand1 = v.ir.VectorSignExtend(esize, v.Vpart(datasize, Vn, Q));
const IR::U128 operand2 = v.ir.VectorSignExtend(esize, v.Vpart(datasize, Vm, Q));
const IR::U128 product = v.ir.VectorMultiply(2 * esize, operand1, operand2);
IR::U128 result = v.ir.VectorMultiply(doubled_esize, operand1, operand2);
v.V(2 * datasize, Vd, product);
if (behavior == MultiplyLongBehavior::Accumulate) {
const IR::U128 addend = v.V(doubled_datasize, Vd);
result = v.ir.VectorAdd(doubled_esize, addend, result);
}
v.V(doubled_datasize, Vd, result);
}
} // Anonymous namespace
@ -98,12 +111,21 @@ bool TranslatorVisitor::SADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::SMLAL_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::Accumulate);
return true;
}
bool TranslatorVisitor::SMULL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd);
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::None);
return true;
}