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[set] Refactor code into page_t::is_subset()

This commit is contained in:
Behdad Esfahbod 2021-05-26 14:24:27 -06:00
parent e47e44a858
commit d2829ad374
1 changed files with 12 additions and 6 deletions
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18
src/hb-set.hh
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@ -106,9 +106,16 @@ struct hb_set_t
} }
} }
bool is_equal (const page_t *other) const bool is_equal (const page_t &other) const
{ {
return 0 == hb_memcmp (&v, &other->v, sizeof (v)); return 0 == hb_memcmp (&v, &other.v, sizeof (v));
}
bool is_subset (const page_t &larger_page) const
{
for (unsigned i = 0; i < len (); i++)
if (~larger_page.v[i] & v[i])
return false;
return true;
} }
unsigned int get_population () const unsigned int get_population () const
@ -491,7 +498,7 @@ struct hb_set_t
if (page_at (a).is_empty ()) { a++; continue; } if (page_at (a).is_empty ()) { a++; continue; }
if (other->page_at (b).is_empty ()) { b++; continue; } if (other->page_at (b).is_empty ()) { b++; continue; }
if (page_map[a].major != other->page_map[b].major || if (page_map[a].major != other->page_map[b].major ||
!page_at (a).is_equal (&other->page_at (b))) !page_at (a).is_equal (other->page_at (b)))
return false; return false;
a++; a++;
b++; b++;
@ -523,9 +530,8 @@ struct hb_set_t
if (lpm < spm) if (lpm < spm)
continue; continue;
for (int j = 0; j < ARRAY_LENGTH_CONST (sp.v); j++) if (!sp.is_subset (lp))
if (~lp.v[j] & sp.v[j]) return false;
return false;
spi++; spi++;
} }