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Mirco-optimizations to reduce register spills and reloads observed on CLANG and GCC.

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Raymond Hettinger 2015-02-09 06:48:29 -06:00
parent 54576da2b4
commit 438f9134cf
1 changed files with 4 additions and 2 deletions
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6
Objects/setobject.c
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@ -84,8 +84,9 @@ set_lookkey(PySetObject *so, PyObject *key, Py_hash_t hash)
return set_lookkey(so, key, hash); return set_lookkey(so, key, hash);
if (cmp > 0) /* likely */ if (cmp > 0) /* likely */
return entry; return entry;
mask = so->mask; /* help avoid a register spill */
} }
if (entry->key == dummy && freeslot == NULL) if (entry->hash == -1 && freeslot == NULL)
freeslot = entry; freeslot = entry;
if (i + LINEAR_PROBES <= mask) { if (i + LINEAR_PROBES <= mask) {
@ -111,8 +112,9 @@ set_lookkey(PySetObject *so, PyObject *key, Py_hash_t hash)
return set_lookkey(so, key, hash); return set_lookkey(so, key, hash);
if (cmp > 0) if (cmp > 0)
return entry; return entry;
mask = so->mask;
} }
if (entry->key == dummy && freeslot == NULL) if (entry->hash == -1 && freeslot == NULL)
freeslot = entry; freeslot = entry;
} }
} }