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10 changes: 1 addition & 9 deletions shell_encryption/rns/rns_polynomial_hwy.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -112,14 +112,7 @@ void BatchFusedMulAddMontgomeryRepHwy(absl::Span<const ModularInt64> a,

// Generate the masks on the even lanes, which correspond to the lower 64 bits
// of BigInt64 (unsigned 128-bit int) values in the output vector.
uint8_t* mask_lo_bits = new uint8_t[(N + 7) / 8];
for (int j = 0; j < (N + 7) / 8; ++j) {
mask_lo_bits[j] = 0;
for (int k = 0; k < 8; k += 2) {
mask_lo_bits[j] |= static_cast<uint8_t>(1 << k);
}
}
auto mask_lo = hn::LoadMaskBits(d, mask_lo_bits);
auto mask_lo = hn::Eq(hn::And(hn::Iota(d, 0), hn::Set(d, 1)), hn::Zero(d));
// A highway vector whose odd lanes (higher 64 bits of the output vector) are
// all 1's and even lanes are all 0's.
auto ones = hn::Slide1Up(d, hn::IfThenElseZero(mask_lo, hn::Set(d, 1)));
Expand Down Expand Up @@ -169,7 +162,6 @@ void BatchFusedMulAddMontgomeryRepHwy(absl::Span<const ModularInt64> a,
hn::Store(output0, d, output0_ptr);
hn::Store(output1, d, output1_ptr);
}
delete[] mask_lo_bits;

// Handle the remaining elements in the input vectors.
for (; i < num_coeffs; ++i) {
Expand Down
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