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A32: Implement ASIMD VPADAL (integer)

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This commit is contained in:
Lioncash 2020-06-20 15:48:20 -04:00 committed by merry
parent 266c6a2000
commit 06f7229c57
3 changed files with 43 additions and 19 deletions
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2
src/frontend/A32/decoder/asimd.inc
View file

@ -86,7 +86,7 @@ INST(asimd_VCLS, "VCLS", "111100111D11zz00dddd010
INST(asimd_VCLZ, "VCLZ", "111100111D11zz00dddd01001QM0mmmm") // ASIMD
INST(asimd_VCNT, "VCNT", "111100111D11zz00dddd01010QM0mmmm") // ASIMD
INST(asimd_VMVN_reg, "VMVN_reg", "111100111D11zz00dddd01011QM0mmmm") // ASIMD
//INST(asimd_VPADAL, "VPADAL", "111100111-11--00----0110xx-0----") // ASIMD
INST(asimd_VPADAL, "VPADAL", "111100111D11zz00dddd0110oQM0mmmm") // ASIMD
INST(asimd_VQABS, "VQABS", "111100111D11zz00dddd01110QM0mmmm") // ASIMD
INST(asimd_VQNEG, "VQNEG", "111100111D11zz00dddd01111QM0mmmm") // ASIMD
INST(asimd_VCGT_zero, "VCGT (zero)", "111100111D11zz01dddd0F000QM0mmmm") // ASIMD

59
src/frontend/A32/translate/impl/asimd_two_regs_misc.cpp
View file

@ -67,6 +67,42 @@ bool CompareWithZero(ArmTranslatorVisitor& v, bool D, size_t sz, size_t Vd, bool
return true;
}
enum class AccumulateBehavior {
None,
Accumulate,
};
bool PairedAddOperation(ArmTranslatorVisitor& v, bool D, size_t sz, size_t Vd, bool op, bool Q, bool M, size_t Vm,
AccumulateBehavior accumulate) {
if (sz == 0b11) {
return v.UndefinedInstruction();
}
if (Q && (Common::Bit<0>(Vd) || Common::Bit<0>(Vm))) {
return v.UndefinedInstruction();
}
const size_t esize = 8U << sz;
const auto d = ToVector(Q, Vd, D);
const auto m = ToVector(Q, Vm, M);
const auto reg_m = v.ir.GetVector(m);
const auto result = [&] {
const auto tmp = op ? v.ir.VectorPairedAddUnsignedWiden(esize, reg_m)
: v.ir.VectorPairedAddSignedWiden(esize, reg_m);
if (accumulate == AccumulateBehavior::Accumulate) {
const auto reg_d = v.ir.GetVector(d);
return v.ir.VectorAdd(esize * 2, reg_d, tmp);
}
return tmp;
}();
v.ir.SetVector(d, result);
return true;
}
} // Anonymous namespace
bool ArmTranslatorVisitor::asimd_VREV(bool D, size_t sz, size_t Vd, size_t op, bool Q, bool M, size_t Vm) {
@ -130,24 +166,7 @@ bool ArmTranslatorVisitor::asimd_VREV(bool D, size_t sz, size_t Vd, size_t op, b
}
bool ArmTranslatorVisitor::asimd_VPADDL(bool D, size_t sz, size_t Vd, bool op, bool Q, bool M, size_t Vm) {
if (sz == 0b11) {
return UndefinedInstruction();
}
if (Q && (Common::Bit<0>(Vd) || Common::Bit<0>(Vm))) {
return UndefinedInstruction();
}
const size_t esize = 8U << sz;
const auto d = ToVector(Q, Vd, D);
const auto m = ToVector(Q, Vm, M);
const auto reg_m = ir.GetVector(m);
const auto result = op ? ir.VectorPairedAddUnsignedWiden(esize, reg_m)
: ir.VectorPairedAddSignedWiden(esize, reg_m);
ir.SetVector(d, result);
return true;
return PairedAddOperation(*this, D, sz, Vd, op, Q, M, Vm, AccumulateBehavior::None);
}
bool ArmTranslatorVisitor::asimd_VCLS(bool D, size_t sz, size_t Vd, bool Q, bool M, size_t Vm) {
@ -233,6 +252,10 @@ bool ArmTranslatorVisitor::asimd_VMVN_reg(bool D, size_t sz, size_t Vd, bool Q,
return true;
}
bool ArmTranslatorVisitor::asimd_VPADAL(bool D, size_t sz, size_t Vd, bool op, bool Q, bool M, size_t Vm) {
return PairedAddOperation(*this, D, sz, Vd, op, Q, M, Vm, AccumulateBehavior::Accumulate);
}
bool ArmTranslatorVisitor::asimd_VQABS(bool D, size_t sz, size_t Vd, bool Q, bool M, size_t Vm) {
if (sz == 0b11) {
return UndefinedInstruction();

1
src/frontend/A32/translate/impl/translate_arm.h
View file

@ -497,6 +497,7 @@ struct ArmTranslatorVisitor final {
bool asimd_VCLZ(bool D, size_t sz, size_t Vd, bool Q, bool M, size_t Vm);
bool asimd_VCNT(bool D, size_t sz, size_t Vd, bool Q, bool M, size_t Vm);
bool asimd_VMVN_reg(bool D, size_t sz, size_t Vd, bool Q, bool M, size_t Vm);
bool asimd_VPADAL(bool D, size_t sz, size_t Vd, bool op, bool Q, bool M, size_t Vm);
bool asimd_VQABS(bool D, size_t sz, size_t Vd, bool Q, bool M, size_t Vm);
bool asimd_VQNEG(bool D, size_t sz, size_t Vd, bool Q, bool M, size_t Vm);
bool asimd_VCGT_zero(bool D, size_t sz, size_t Vd, bool F, bool Q, bool M, size_t Vm);