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[VarData] Optimize wordCount calculation 

6% speedup in RobotoFlex-Variable/900 benchmark.
This commit is contained in:
Behdad Esfahbod 2022-12-03 14:49:38 -07:00
parent 3641b0e01e
commit f2c980be29
1 changed files with 6 additions and 0 deletions
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6
src/hb-ot-layout-common.hh
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@ -2510,6 +2510,8 @@ struct VarData
signed max_threshold = has_long ? +65535 : +127; signed max_threshold = has_long ? +65535 : +127;
for (r = 0; r < ri_count; r++) for (r = 0; r < ri_count; r++)
{ {
bool short_circuit = src->longWords () == has_long && src->wordCount () <= r;
delta_sz[r] = kZero; delta_sz[r] = kZero;
for (unsigned int i = 0; i < inner_map.get_next_value (); i++) for (unsigned int i = 0; i < inner_map.get_next_value (); i++)
{ {
@ -2522,7 +2524,11 @@ struct VarData
break; break;
} }
else if (delta != 0) else if (delta != 0)
{
delta_sz[r] = kNonWord; delta_sz[r] = kNonWord;
if (short_circuit)
break;
}
} }
} }