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[bimap] Add unlikely and minor optimization in is_empty()

This commit is contained in:
Behdad Esfahbod 2022-05-28 05:14:16 -06:00
parent c56ce8681c
commit 24d5a11dcb
1 changed files with 3 additions and 3 deletions
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6
src/hb-bimap.hh
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@ -54,10 +54,10 @@ struct hb_bimap_t
if (unlikely (rhs == HB_MAP_VALUE_INVALID)) { del (lhs); return; } if (unlikely (rhs == HB_MAP_VALUE_INVALID)) { del (lhs); return; }
forw_map.set (lhs, rhs); forw_map.set (lhs, rhs);
if (in_error ()) return; if (unlikely (in_error ())) return;
back_map.set (rhs, lhs); back_map.set (rhs, lhs);
if (in_error ()) forw_map.del (lhs); if (unlikely (in_error ())) forw_map.del (lhs);
} }
hb_codepoint_t get (hb_codepoint_t lhs) const { return forw_map.get (lhs); } hb_codepoint_t get (hb_codepoint_t lhs) const { return forw_map.get (lhs); }
@ -78,7 +78,7 @@ struct hb_bimap_t
back_map.clear (); back_map.clear ();
} }
bool is_empty () const { return get_population () == 0; } bool is_empty () const { return forw_map.is_empty (); }
unsigned int get_population () const { return forw_map.get_population (); } unsigned int get_population () const { return forw_map.get_population (); }