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xe: jit: fix shr usage

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Chereshnev, Eugene
2025-10-14 18:27:11 -07:00
committed by Eugene Chereshnev
parent 3a756b982b
commit 954f7f76f2
1 changed files with 31 additions and 7 deletions
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38
src/gpu/intel/jit/codegen/kernel.hpp
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@ -827,8 +827,8 @@ public:
mach(1, _qot, _x, m);
add(1, p_tmp, p, -32);
cmp(1 | ge | f0[0], p, 32);
shr<uint32_t>(1 | f0[0], _qot, _qot, p_tmp);
shr<uint32_t>(1 | ~f0[0], _qot, _x, p);
eshr(1 | f0[0], _qot, _qot, p_tmp);
eshr(1 | ~f0[0], _qot, _x, p);
if (!qot.isInvalid()) mov(mod, qot, _qot);
if (!rem.isInvalid()) {
@ -915,7 +915,7 @@ public:
_x = ra_.alloc_sub(div_type);
mov(1, _x, x);
}
if (!qot.isInvalid()) shr(mod, qot, _x, ngen::utils::log2(y));
if (!qot.isInvalid()) eshr(mod, qot, _x, ngen::utils::log2(y));
if (!rem.isInvalid()) and_(mod, rem, _x, y - 1);
if (_x != x) ra_.safeRelease(_x);
return;
@ -930,10 +930,18 @@ public:
auto _qot = qot_tmp[0];
mov(1, _x, x);
auto acc = acc0.retype(div_type);
mul(1, acc[0], _x, m & 0xFFFF);
mach(1, _qot, _x, m);
shr<uint32_t>(1, _qot, _qot, p - 32);
// qot = (x * m) >> p
bool use_mach = true;
if (use_mach) {
auto acc = acc0.retype(div_type);
mul(1, acc[0], _x, m & 0xFFFF);
mach(1, _qot, _x, m);
eshr(1, _qot, _qot, p - 32);
} else {
auto q_tmp = qot_tmp.retype(ngen::DataType::q);
emul(1, q_tmp[0], _x, m);
eshr(1, q_tmp, q_tmp, p);
}
if (!rem.isInvalid()) {
// rem = x - qot * y
@ -1014,6 +1022,22 @@ public:
*this, mod, dst, src0, src1, emu_strategy_, emu_state_);
}
template <typename DT = void>
void eshr(const ngen::InstructionModifier &mod, ngen::RegData dst,
ngen::RegData src0, ngen::RegData src1) {
const bool is_q = ngen_is_qw(src0.getType());
if (is_q) {
gpu_error_not_expected()
<< "eshr(q, q, reg_data) case not implemented";
} else {
if (ngen::isSigned(src0.getType())) {
asr<DT>(mod, dst, src0, src1);
} else {
shr<DT>(mod, dst, src0, src1);
}
}
}
void esel(const ngen::InstructionModifier &mod, const ngen_operand_t &dst,
const ngen_operand_t &src0, const ngen_operand_t &src1) {
if (ngen_is_qw(dst.type())) {