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A32: Implement ASIMD VQDMULL (scalar)

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Lioncash 2020-06-23 01:54:31 -04:00 committed by merry
parent 20a2bf29fc
commit b5df8d1ef8
3 changed files with 26 additions and 1 deletions
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2
src/frontend/A32/decoder/asimd.inc
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@ -74,7 +74,7 @@ INST(asimd_VMLAL_scalar, "VMLAL (scalar)", "1111001U1dzznnnndddd0o1
//INST(asimd_VQDMLAL_scalar, "VQDMLAL/VQDMLSL (scalar)", "111100101-BB--------0x11-1-0----") // ASIMD
INST(asimd_VMUL_scalar, "VMUL (scalar)", "1111001Q1Dzznnnndddd100FN1M0mmmm") // ASIMD
INST(asimd_VMULL_scalar, "VMULL (scalar)", "1111001U1Dzznnnndddd1010N1M0mmmm") // ASIMD
//INST(asimd_VQDMULL_scalar, "VQDMULL (scalar)", "111100101-BB--------1011-1-0----") // ASIMD
INST(asimd_VQDMULL_scalar, "VQDMULL (scalar)", "111100101Dzznnnndddd1011N1M0mmmm") // ASIMD
INST(asimd_VQDMULH_scalar, "VQDMULH (scalar)", "1111001Q1Dzznnnndddd1100N1M0mmmm") // ASIMD
INST(asimd_VQRDMULH_scalar, "VQRDMULH (scalar)", "1111001Q1Dzznnnndddd1101N1M0mmmm") // ASIMD

24
src/frontend/A32/translate/impl/asimd_two_regs_scalar.cpp
View file

@ -169,6 +169,30 @@ bool ArmTranslatorVisitor::asimd_VMULL_scalar(bool U, bool D, size_t sz, size_t
return ScalarMultiplyLong(*this, U, D, sz, Vn, Vd, N, M, Vm, MultiplyBehavior::Multiply);
}
bool ArmTranslatorVisitor::asimd_VQDMULL_scalar(bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm) {
if (sz == 0b11) {
// TODO: This should be a decode error.
return UndefinedInstruction();
}
if (sz == 0b00 || Common::Bit<0>(Vd)) {
return UndefinedInstruction();
}
const size_t esize = 8U << sz;
const auto d = ToVector(true, Vd, D);
const auto n = ToVector(false, Vn, N);
const auto [m, index] = GetScalarLocation(esize, M, Vm);
const auto scalar = ir.VectorGetElement(esize, ir.GetVector(m), index);
const auto reg_n = ir.GetVector(n);
const auto reg_m = ir.VectorBroadcast(esize, scalar);
const auto result = ir.VectorSignedSaturatedDoublingMultiplyLong(esize, reg_m, reg_n);
ir.SetVector(d, result);
return true;
}
bool ArmTranslatorVisitor::asimd_VQDMULH_scalar(bool Q, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm) {
return ScalarMultiplyReturnHigh(*this, Q, D, sz, Vn, Vd, N, M, Vm, Rounding::None);
}

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

@ -510,6 +510,7 @@ struct ArmTranslatorVisitor final {
bool asimd_VMLAL_scalar(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool op, bool N, bool M, size_t Vm);
bool asimd_VMUL_scalar(bool Q, bool D, size_t sz, size_t Vn, size_t Vd, bool F, bool N, bool M, size_t Vm);
bool asimd_VMULL_scalar(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm);
bool asimd_VQDMULL_scalar(bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm);
bool asimd_VQDMULH_scalar(bool Q, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm);
bool asimd_VQRDMULH_scalar(bool Q, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm);