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A64: Implement SMLAL{2}

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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
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2
src/frontend/A64/decoder/a64.inc
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@ -684,7 +684,7 @@ INST(ADDHN, "ADDHN, ADDHN2", "0Q001
INST(SABAL, "SABAL, SABAL2", "0Q001110zz1mmmmm010100nnnnnddddd")
INST(SUBHN, "SUBHN, SUBHN2", "0Q001110zz1mmmmm011000nnnnnddddd")
INST(SABDL, "SABDL, SABDL2", "0Q001110zz1mmmmm011100nnnnnddddd")
//INST(SMLAL_vec, "SMLAL, SMLAL2 (vector)", "0Q001110zz1mmmmm100000nnnnnddddd")
INST(SMLAL_vec, "SMLAL, SMLAL2 (vector)", "0Q001110zz1mmmmm100000nnnnnddddd")
//INST(SMLSL_vec, "SMLSL, SMLSL2 (vector)", "0Q001110zz1mmmmm101000nnnnnddddd")
INST(SMULL_vec, "SMULL, SMULL2 (vector)", "0Q001110zz1mmmmm110000nnnnnddddd")
//INST(PMULL, "PMULL, PMULL2", "0Q001110zz1mmmmm111000nnnnnddddd")

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;
}