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A64: Implement SABAL/SABAL2 and SABDL/SABDL2

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Now that we have a helper function for the unsigned variants, we can
modify it to also be usable with the signed variants.
This commit is contained in:
Lioncash 2018-05-12 15:30:05 -04:00 committed by MerryMage
parent 26d4473851
commit c5ae9107a9
2 changed files with 31 additions and 7 deletions
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4
src/frontend/A64/decoder/a64.inc
View file

@ -681,9 +681,9 @@ INST(SADDW, "SADDW, SADDW2", "0Q001
INST(SSUBL, "SSUBL, SSUBL2", "0Q001110zz1mmmmm001000nnnnnddddd")
INST(SSUBW, "SSUBW, SSUBW2", "0Q001110zz1mmmmm001100nnnnnddddd")
INST(ADDHN, "ADDHN, ADDHN2", "0Q001110zz1mmmmm010000nnnnnddddd")
//INST(SABAL, "SABAL, SABAL2", "0Q001110zz1mmmmm010100nnnnnddddd")
INST(SABAL, "SABAL, SABAL2", "0Q001110zz1mmmmm010100nnnnnddddd")
INST(SUBHN, "SUBHN, SUBHN2", "0Q001110zz1mmmmm011000nnnnnddddd")
//INST(SABDL, "SABDL, SABDL2", "0Q001110zz1mmmmm011100nnnnnddddd")
INST(SABDL, "SABDL, SABDL2", "0Q001110zz1mmmmm011100nnnnnddddd")
//INST(SMLAL_vec, "SMLAL, SMLAL2 (vector)", "0Q001110zz1mmmmm100000nnnnnddddd")
//INST(SMLSL_vec, "SMLSL, SMLSL2 (vector)", "0Q001110zz1mmmmm101000nnnnnddddd")
//INST(SMULL_vec, "SMULL, SMULL2 (vector)", "0Q001110zz1mmmmm110000nnnnnddddd")

34
src/frontend/A64/translate/impl/simd_three_different.cpp
View file

@ -13,14 +13,20 @@ enum class AbsoluteDifferenceBehavior {
Accumulate
};
void UnsignedAbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
AbsoluteDifferenceBehavior behavior) {
enum class Signedness {
Signed,
Unsigned
};
void AbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
AbsoluteDifferenceBehavior behavior, Signedness sign) {
const size_t esize = 8 << size.ZeroExtend();
const size_t datasize = 64;
const IR::U128 operand1 = v.ir.VectorZeroExtend(esize, v.Vpart(datasize, Vn, Q));
const IR::U128 operand2 = v.ir.VectorZeroExtend(esize, v.Vpart(datasize, Vm, Q));
IR::U128 result = v.ir.VectorUnsignedAbsoluteDifference(esize, operand1, operand2);
IR::U128 result = sign == Signedness::Signed ? v.ir.VectorSignedAbsoluteDifference(esize, operand1, operand2)
: v.ir.VectorUnsignedAbsoluteDifference(esize, operand1, operand2);
if (behavior == AbsoluteDifferenceBehavior::Accumulate) {
const IR::U128 data = v.V(2 * datasize, Vd);
@ -31,6 +37,24 @@ void UnsignedAbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, V
}
} // Anonymous namespace
bool TranslatorVisitor::SABAL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();
}
AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::Accumulate, Signedness::Signed);
return true;
}
bool TranslatorVisitor::SABDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();
}
AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::None, Signedness::Signed);
return true;
}
bool TranslatorVisitor::SADDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();
@ -116,7 +140,7 @@ bool TranslatorVisitor::UABAL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return ReservedValue();
}
UnsignedAbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::Accumulate);
AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::Accumulate, Signedness::Unsigned);
return true;
}
@ -125,7 +149,7 @@ bool TranslatorVisitor::UABDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return ReservedValue();
}
UnsignedAbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::None);
AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::None, Signedness::Unsigned);
return true;
}