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simd_three_different: Deduplicate common implementations

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Generally, the only difference between the signed variants and the
unsigned variants is whether or not we use a sign-extension or
zero-extension, so we can simply use common functions to implement both
cases without totally duplicating code twice here.
This commit is contained in:
Lioncash 2018-07-14 16:13:37 -04:00 committed by MerryMage
parent 9c0d5cf15c
commit fcae4e2418
1 changed files with 104 additions and 168 deletions
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272
src/frontend/A64/translate/impl/simd_three_different.cpp
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@ -18,8 +18,12 @@ enum class Signedness {
Unsigned Unsigned
}; };
void AbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd, bool AbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
AbsoluteDifferenceBehavior behavior, Signedness sign) { AbsoluteDifferenceBehavior behavior, Signedness sign) {
if (size == 0b11) {
return v.ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend(); const size_t esize = 8 << size.ZeroExtend();
const size_t datasize = 64; const size_t datasize = 64;
@ -34,6 +38,7 @@ void AbsoluteDifferenceLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, V
} }
v.V(2 * datasize, Vd, result); v.V(2 * datasize, Vd, result);
return true;
} }
enum class MultiplyLongBehavior { enum class MultiplyLongBehavior {
@ -42,8 +47,12 @@ enum class MultiplyLongBehavior {
Subtract Subtract
}; };
void MultiplyLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd, bool MultiplyLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
MultiplyLongBehavior behavior, Signedness sign) { MultiplyLongBehavior behavior, Signedness sign) {
if (size == 0b11) {
return v.ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend(); const size_t esize = 8 << size.ZeroExtend();
const size_t doubled_esize = 2 * esize; const size_t doubled_esize = 2 * esize;
const size_t datasize = 64; const size_t datasize = 64;
@ -74,227 +83,154 @@ void MultiplyLong(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec
} }
v.V(doubled_datasize, Vd, result); v.V(doubled_datasize, Vd, result);
return true;
}
enum class LongOperationBehavior {
Addition,
Subtraction
};
bool LongOperation(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
LongOperationBehavior behavior, Signedness sign) {
if (size == 0b11) {
return v.ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const auto get_operand = [&](Vec vec) {
const IR::U128 tmp = v.Vpart(64, vec, part);
if (sign == Signedness::Signed) {
return v.ir.VectorSignExtend(esize, tmp);
}
return v.ir.VectorZeroExtend(esize, tmp);
};
const IR::U128 operand1 = get_operand(Vn);
const IR::U128 operand2 = get_operand(Vm);
const IR::U128 result = [&] {
if (behavior == LongOperationBehavior::Addition) {
return v.ir.VectorAdd(esize * 2, operand1, operand2);
}
return v.ir.VectorSub(esize * 2, operand1, operand2);
}();
v.V(128, Vd, result);
return true;
}
enum class WideOperationBehavior {
Addition,
Subtraction
};
bool WideOperation(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd,
WideOperationBehavior behavior, Signedness sign) {
if (size == 0b11) {
return v.ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = v.V(128, Vn);
const IR::U128 operand2 = [&] {
const IR::U128 tmp = v.Vpart(64, Vm, part);
if (sign == Signedness::Signed) {
return v.ir.VectorSignExtend(esize, tmp);
}
return v.ir.VectorZeroExtend(esize, tmp);
}();
const IR::U128 result = [&] {
if (behavior == WideOperationBehavior::Addition) {
return v.ir.VectorAdd(esize * 2, operand1, operand2);
}
return v.ir.VectorSub(esize * 2, operand1, operand2);
}();
v.V(128, Vd, result);
return true;
} }
} // Anonymous namespace } // Anonymous namespace
bool TranslatorVisitor::SABAL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::SABAL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::Accumulate, Signedness::Signed);
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) { bool TranslatorVisitor::SABDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::None, Signedness::Signed);
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) { bool TranslatorVisitor::SADDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return LongOperation(*this, Q, size, Vm, Vn, Vd, LongOperationBehavior::Addition, Signedness::Signed);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = ir.VectorSignExtend(esize, Vpart(64, Vn, part));
const IR::U128 operand2 = ir.VectorSignExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorAdd(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
bool TranslatorVisitor::SADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::SADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return WideOperation(*this, Q, size, Vm, Vn, Vd, WideOperationBehavior::Addition, Signedness::Signed);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = V(128, Vn);
const IR::U128 operand2 = ir.VectorSignExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorAdd(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
bool TranslatorVisitor::SMLAL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::SMLAL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Accumulate, Signedness::Signed);
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Accumulate, Signedness::Signed);
return true;
} }
bool TranslatorVisitor::SMLSL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::SMLSL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Subtract, Signedness::Signed);
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Subtract, Signedness::Signed);
return true;
} }
bool TranslatorVisitor::SMULL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::SMULL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::None, Signedness::Signed);
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::None, Signedness::Signed);
return true;
} }
bool TranslatorVisitor::SSUBW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::SSUBW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return WideOperation(*this, Q, size, Vm, Vn, Vd, WideOperationBehavior::Subtraction, Signedness::Signed);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = V(128, Vn);
const IR::U128 operand2 = ir.VectorSignExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorSub(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
bool TranslatorVisitor::SSUBL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::SSUBL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return LongOperation(*this, Q, size, Vm, Vn, Vd, LongOperationBehavior::Subtraction, Signedness::Signed);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = ir.VectorSignExtend(esize, Vpart(64, Vn, part));
const IR::U128 operand2 = ir.VectorSignExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorSub(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
bool TranslatorVisitor::UADDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::UADDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return LongOperation(*this, Q, size, Vm, Vn, Vd, LongOperationBehavior::Addition, Signedness::Unsigned);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = ir.VectorZeroExtend(esize, Vpart(64, Vn, part));
const IR::U128 operand2 = ir.VectorZeroExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorAdd(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
bool TranslatorVisitor::UABAL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::UABAL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::Accumulate, Signedness::Unsigned);
return ReservedValue();
}
AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::Accumulate, Signedness::Unsigned);
return true;
} }
bool TranslatorVisitor::UABDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::UABDL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::None, Signedness::Unsigned);
return ReservedValue();
}
AbsoluteDifferenceLong(*this, Q, size, Vm, Vn, Vd, AbsoluteDifferenceBehavior::None, Signedness::Unsigned);
return true;
} }
bool TranslatorVisitor::UADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::UADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return WideOperation(*this, Q, size, Vm, Vn, Vd, WideOperationBehavior::Addition, Signedness::Unsigned);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend<size_t>();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = V(128, Vn);
const IR::U128 operand2 = ir.VectorZeroExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorAdd(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
bool TranslatorVisitor::UMLAL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::UMLAL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Accumulate, Signedness::Unsigned);
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Accumulate, Signedness::Unsigned);
return true;
} }
bool TranslatorVisitor::UMLSL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::UMLSL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Subtract, Signedness::Unsigned);
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::Subtract, Signedness::Unsigned);
return true;
} }
bool TranslatorVisitor::UMULL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::UMULL_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::None, Signedness::Unsigned);
return ReservedValue();
}
MultiplyLong(*this, Q, size, Vm, Vn, Vd, MultiplyLongBehavior::None, Signedness::Unsigned);
return true;
} }
bool TranslatorVisitor::USUBW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::USUBW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return WideOperation(*this, Q, size, Vm, Vn, Vd, WideOperationBehavior::Subtraction, Signedness::Unsigned);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = V(128, Vn);
const IR::U128 operand2 = ir.VectorZeroExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorSub(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
bool TranslatorVisitor::USUBL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) { bool TranslatorVisitor::USUBL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) { return LongOperation(*this, Q, size, Vm, Vn, Vd, LongOperationBehavior::Subtraction, Signedness::Unsigned);
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = ir.VectorZeroExtend(esize, Vpart(64, Vn, part));
const IR::U128 operand2 = ir.VectorZeroExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorSub(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
} }
} // namespace Dynarmic::A64 } // namespace Dynarmic::A64