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[TupleValues] Optimize decoding

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This commit is contained in:
Behdad Esfahbod 2025-02-24 15:13:08 -07:00
parent 043980a60e
commit 2099db378a
1 changed files with 22 additions and 2 deletions
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24
src/hb-open-type.hh
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@ -1733,6 +1733,19 @@ struct TupleValues
else if ((control & VALUES_SIZE_MASK) == VALUES_ARE_WORDS)
{
if (unlikely (p + run_count * HBINT16::static_size > end)) return false;
#ifndef HB_OPTIMIZE_SIZE
for (; i + 3 < stop; i += 4)
{
values.arrayZ[i] = * (const HBINT16 *) p;
p += HBINT16::static_size;
values.arrayZ[i + 1] = * (const HBINT16 *) p;
p += HBINT16::static_size;
values.arrayZ[i + 2] = * (const HBINT16 *) p;
p += HBINT16::static_size;
values.arrayZ[i + 3] = * (const HBINT16 *) p;
p += HBINT16::static_size;
}
#endif
for (; i < stop; i++)
{
values.arrayZ[i] = * (const HBINT16 *) p;
@ -1751,10 +1764,17 @@ struct TupleValues
else if ((control & VALUES_SIZE_MASK) == VALUES_ARE_BYTES)
{
if (unlikely (p + run_count > end)) return false;
#ifndef HB_OPTIMIZE_SIZE
for (; i + 3 < stop; i += 4)
{
values.arrayZ[i] = * (const HBINT8 *) p++;
values.arrayZ[i + 1] = * (const HBINT8 *) p++;
values.arrayZ[i + 2] = * (const HBINT8 *) p++;
values.arrayZ[i + 3] = * (const HBINT8 *) p++;
}
#endif
for (; i < stop; i++)
{
values.arrayZ[i] = * (const HBINT8 *) p++;
}
}
}
return true;