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A64: Implement SQDMULH's by-element vector variant

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Lioncash 2018-09-07 17:49:39 -04:00 committed by MerryMage
parent 8f9206901d
commit 40f0576995
3 changed files with 27 additions and 2 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -827,7 +827,7 @@ INST(USHLL, "USHLL, USHLL2", "0Q101
INST(MUL_elt, "MUL (by element)", "0Q001111zzLMmmmm1000H0nnnnnddddd")
//INST(SMULL_elt, "SMULL, SMULL2 (by element)", "0Q001111zzLMmmmm1010H0nnnnnddddd")
//INST(SQDMULL_elt_2, "SQDMULL, SQDMULL2 (by element)", "0Q001111zzLMmmmm1011H0nnnnnddddd")
//INST(SQDMULH_elt_2, "SQDMULH (by element)", "0Q001111zzLMmmmm1100H0nnnnnddddd")
INST(SQDMULH_elt_2, "SQDMULH (by element)", "0Q001111zzLMmmmm1100H0nnnnnddddd")
//INST(SQRDMULH_elt_2, "SQRDMULH (by element)", "0Q001111zzLMmmmm1101H0nnnnnddddd")
INST(SDOT_elt, "SDOT (by element)", "0Q001111zzLMmmmm1110H0nnnnnddddd")
//INST(FMLA_elt_3, "FMLA (by element)", "0Q00111100LMmmmm0001H0nnnnnddddd")

2
src/frontend/A64/translate/impl/impl.h
View file

@ -897,7 +897,7 @@ struct TranslatorVisitor final {
bool MUL_elt(bool Q, Imm<2> size, Imm<1> L, Imm<1> M, Imm<4> Vmlo, Imm<1> H, Vec Vn, Vec Vd);
bool SMULL_elt(bool Q, Imm<2> size, bool L, bool M, Vec Vm, bool H, Vec Vn, Vec Vd);
bool SQDMULL_elt_2(bool Q, Imm<2> size, bool L, bool M, Vec Vm, bool H, Reg Rn, Vec Vd);
bool SQDMULH_elt_2(bool Q, Imm<2> size, bool L, bool M, Vec Vm, bool H, Vec Vn, Vec Vd);
bool SQDMULH_elt_2(bool Q, Imm<2> size, Imm<1> L, Imm<1> M, Imm<4> Vmlo, Imm<1> H, Vec Vn, Vec Vd);
bool SQRDMULH_elt_2(bool Q, Imm<2> size, bool L, bool M, Vec Vm, bool H, Vec Vn, Vec Vd);
bool SDOT_elt(bool Q, Imm<2> size, Imm<1> L, Imm<1> M, Imm<4> Vmlo, Imm<1> H, Vec Vn, Vec Vd);
bool FMLA_elt_3(bool Q, bool L, bool M, Vec Vm, bool H, Vec Vn, Vec Vd);

25
src/frontend/A64/translate/impl/simd_vector_x_indexed_element.cpp
View file

@ -147,6 +147,31 @@ bool TranslatorVisitor::FMUL_elt_4(bool Q, bool sz, Imm<1> L, Imm<1> M, Imm<4> V
return FPMultiplyByElement(*this, Q, sz, L, M, Vmlo, H, Vn, Vd, ExtraBehavior::None);
}
bool TranslatorVisitor::SQDMULH_elt_2(bool Q, Imm<2> size, Imm<1> L, Imm<1> M, Imm<4> Vmlo, Imm<1> H, Vec Vn, Vec Vd) {
if (size == 0b00 || size == 0b11) {
return UnallocatedEncoding();
}
const size_t idxsize = H == 1 ? 128 : 64;
const size_t esize = 8 << size.ZeroExtend();
const size_t datasize = Q ? 128 : 64;
const auto [index, Vmhi] = [=] {
if (size == 0b01) {
return std::make_pair(concatenate(H, L, M).ZeroExtend(), Imm<1>{0});
}
return std::make_pair(concatenate(H, L).ZeroExtend(), M);
}();
const IR::U128 operand1 = V(datasize, Vn);
const IR::U128 operand2 = V(idxsize, concatenate(Vmhi, Vmlo).ZeroExtend<Vec>());
const IR::U128 index_vector = ir.VectorBroadcast(esize, ir.VectorGetElement(esize, operand2, index));
const IR::U128 result = ir.VectorSignedSaturatedDoublingMultiplyReturnHigh(esize, operand1, index_vector);
V(datasize, Vd, result);
return true;
}
bool TranslatorVisitor::SDOT_elt(bool Q, Imm<2> size, Imm<1> L, Imm<1> M, Imm<4> Vmlo, Imm<1> H, Vec Vn, Vec Vd) {
return DotProduct(*this, Q, size, L, M, Vmlo, H, Vn, Vd, &IREmitter::SignExtendToWord);
}