MirrorHub/construct
0
0
Fork 0
mirror of https://github.com/matrix-construct/construct synced 2024-11-25 08:12:37 +01:00
Code Issues Releases Wiki Activity

ircd::b64: Annotate to generate vectorize pass-warning; unroll to force (clang-15).

Browse source
This commit is contained in:
Jason Volk 2023-02-03 12:50:41 -08:00
parent 027339456b
commit ec74762f01
1 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
ircd/b64.cc
View file

@ -279,26 +279,31 @@ noexcept
// vpermb
u8x64 _perm;
#pragma clang loop vectorize(enable) unroll(full)
for(k = 0; k < 64; ++k)
_perm[k] = in[encode_permute_tab[k]];
// TODO: currently does not achieve vpmultshiftqb on avx512vbmi
u64x8 sh[8], perm(_perm);
#pragma clang loop vectorize(enable)
for(i = 0; i < 8; ++i)
for(j = 0; j < 8; ++j)
sh[i][j] = perm[i] >> encode_shift_ctrl[i * 8 + j];
// TODO: not needed if vpmultishiftqb is emitted.
#pragma clang loop vectorize(enable) vectorize_predicate(enable)
for(i = 0; i < 8; ++i)
for(j = 0; j < 8; ++j)
sh[i][j] &= 0x3f;
u32x8 res[8];
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0; i < 8; ++i)
for(j = 0; j < 8; ++j)
res[i][j] = dict[sh[i][j]];
u8x64 ret;
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0, k = 0; i < 8; ++i)
for(j = 0; j < 8; ++j)
ret[k++] = res[i][j];
@ -400,32 +405,40 @@ noexcept
size_t i, j;
i32x16 vals[4];
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0; i < 4; ++i)
#pragma clang loop vectorize(enable) unroll(full)
for(j = 0; j < 16; ++j)
vals[i][j] = block[i * 16 + j],
vals[i][j] = decode_tab[vals[i][j]];
u8x64 _err;
i32x16 errs;
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0; i < 4; ++i)
#pragma clang loop vectorize(enable) unroll(full)
for(j = 0, errs = vals[i] >= 64; j < 16; ++j)
_err[i * 16 + j] = errs[j];
u16x32 al, ah;
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0; i < 4; ++i)
for(j = 0; j < 8; ++j)
ah[i * 8 + j] = vals[i][j * 2 + 0],
al[i * 8 + j] = vals[i][j * 2 + 1];
u16x32 a;
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0; i < 32; ++i)
a[i] = ah[i] * 64U + al[i];
i32x16 b;
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0, j = 0; i < 16; ++i, j += 2)
b[i] = a[j] * 4096U + a[j + 1];
u8x64 c(b), ret;
#pragma clang loop vectorize(enable) unroll(full)
for(i = 0; i < 64; ++i)
ret[i] = c[decode_permute_tab_le[i]];