mirrors/dynarmic
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

A64: Implement TRN1

Browse source
This commit is contained in:
Lioncash 2018-04-13 12:54:21 -04:00 committed by MerryMage
parent 52cad2d9d0
commit 30e158f8d0
2 changed files with 37 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
src/frontend/A64/decoder/a64.inc
View file

@ -515,7 +515,7 @@ INST(USRA_1, "USRA", "01111
// Data Processing - FP and SIMD - SIMD Permute
//INST(UZP1, "UZP1", "0Q001110zz0mmmmm000110nnnnnddddd")
//INST(TRN1, "TRN1", "0Q001110zz0mmmmm001010nnnnnddddd")
INST(TRN1, "TRN1", "0Q001110zz0mmmmm001010nnnnnddddd")
INST(ZIP1, "ZIP1", "0Q001110zz0mmmmm001110nnnnnddddd")
//INST(UZP2, "UZP2", "0Q001110zz0mmmmm010110nnnnnddddd")
//INST(TRN2, "TRN2", "0Q001110zz0mmmmm011010nnnnnddddd")

36
src/frontend/A64/translate/impl/simd_permute.cpp
View file

@ -8,6 +8,42 @@
namespace Dynarmic::A64 {
bool TranslatorVisitor::TRN1(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (!Q && size == 0b11) {
return ReservedValue();
}
const size_t datasize = Q ? 128 : 64;
const size_t esize = 8 << size.ZeroExtend();
const IR::U128 m = V(datasize, Vm);
const IR::U128 n = V(datasize, Vn);
const IR::U128 result = [&] {
switch (esize) {
case 8:
case 16:
case 32: {
// Create a mask of elements we care about (e.g. for 8-bit 0x00FF00FF00FF00FF)
const u64 mask_element = Common::Ones<u64>(esize);
const u64 mask_value = Common::Replicate<u64>(mask_element, esize * 2);
const IR::U128 mask = ir.VectorBroadcast(64, I(64, mask_value));
const IR::U128 anded_m = ir.VectorAnd(m, mask);
const IR::U128 anded_n = ir.VectorAnd(n, mask);
return ir.VectorOr(ir.VectorLogicalShiftLeft(esize * 2, anded_m, esize), anded_n);
}
case 64: {
default:
return ir.VectorSetElement(esize, n, 1, ir.VectorGetElement(esize, m, 0));
}
}
}();
V(datasize, Vd, result);
return true;
}
bool TranslatorVisitor::ZIP1(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11 && !Q) {
return ReservedValue();