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Merge pull request #471 from lioncash/sqrdmulh

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A64: Implement SQRDMULH's scalar vector variant
This commit is contained in:
Merry
2019-04-12 20:29:22 +01:00
committed by MerryMage
parent b5e25959d9 3b46b4a37d
commit b91c6c8bae
2 changed files with 17 additions and 1 deletions
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16
src/frontend/A64/translate/impl/simd_scalar_three_same.cpp
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@@ -155,6 +155,22 @@ bool TranslatorVisitor::SQDMULH_vec_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::SQRDMULH_vec_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b00 || size == 0b11) {
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const IR::U128 operand1 = ir.ZeroExtendToQuad(ir.VectorGetElement(esize, V(128, Vn), 0));
const IR::U128 operand2 = ir.ZeroExtendToQuad(ir.VectorGetElement(esize, V(128, Vm), 0));
const IR::UpperAndLower multiply = ir.VectorSignedSaturatedDoublingMultiply(esize, operand1, operand2);
const IR::U128 result = ir.VectorAdd(esize, multiply.upper, ir.VectorLogicalShiftRight(esize, multiply.lower, static_cast<u8>(esize - 1)));
V_scalar(esize, Vd, ir.VectorGetElement(esize, result, 0));
return true;
}
bool TranslatorVisitor::SQSUB_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
const size_t esize = 8 << size.ZeroExtend<size_t>();