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A64: Implement UQSHL's vector immediate and register variants

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This commit is contained in:
Lioncash
2018-09-18 18:55:15 -04:00
committed by MerryMage
parent d426dfe942
commit 48df9b9a7d
3 changed files with 57 additions and 29 deletions
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40
src/frontend/A64/translate/impl/simd_three_same.cpp
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@@ -369,6 +369,28 @@ bool SaturatingArithmeticOperation(TranslatorVisitor& v, bool Q, Imm<2> size, Ve
return true;
}
bool SaturatingShiftLeft(TranslatorVisitor& v, bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd, Signedness sign) {
if (size == 0b11 && !Q) {
return v.ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t datasize = Q ? 128 : 64;
const IR::U128 operand1 = v.V(datasize, Vn);
const IR::U128 operand2 = v.V(datasize, Vm);
const IR::U128 result = [&] {
if (sign == Signedness::Signed) {
return v.ir.VectorSignedSaturatedShiftLeft(esize, operand1, operand2);
}
return v.ir.VectorUnsignedSaturatedShiftLeft(esize, operand1, operand2);
}();
v.V(datasize, Vd, result);
return true;
}
} // Anonymous namespace
bool TranslatorVisitor::CMGT_reg_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
@@ -779,19 +801,7 @@ bool TranslatorVisitor::CMTST_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
}
bool TranslatorVisitor::SQSHL_reg_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11 && !Q) {
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t datasize = Q ? 128 : 64;
const IR::U128 operand1 = V(datasize, Vn);
const IR::U128 operand2 = V(datasize, Vm);
const IR::U128 result = ir.VectorSignedSaturatedShiftLeft(esize, operand1, operand2);
V(datasize, Vd, result);
return true;
return SaturatingShiftLeft(*this, Q, size, Vm, Vn, Vd, Signedness::Signed);
}
bool TranslatorVisitor::SRSHL_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
@@ -812,6 +822,10 @@ bool TranslatorVisitor::SSHL_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::UQSHL_reg_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return SaturatingShiftLeft(*this, Q, size, Vm, Vn, Vd, Signedness::Unsigned);
}
bool TranslatorVisitor::URSHL_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return RoundingShiftLeft(*this, Q, size, Vm, Vn, Vd, Signedness::Unsigned);
}