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Introduce ZEND_BITSET_FOREACH macros

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This commit is contained in:
Nikita Popov 2016-04-24 17:04:22 +02:00
parent 62240f2653
commit cafe78d12a
2 changed files with 70 additions and 51 deletions
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27
Zend/zend_bitset.h
View file

@ -174,6 +174,33 @@ static inline int zend_bitset_last(zend_bitset set, uint32_t len)
return -1; /* empty set */
}
#define ZEND_BITSET_FOREACH(set, len, bit) do { \
zend_bitset _set = (set); \
uint32_t _i, _len = (len); \
for (_i = 0; _i < len; _i++) { \
zend_ulong _x = _set[_i]; \
if (_x) { \
(bit) = ZEND_BITSET_ELM_SIZE * 8 * _i; \
for (; _x != 0; _x >>= Z_UL(1), (bit)++) { \
if (!(_x & Z_UL(1))) continue;
#define ZEND_BITSET_REVERSE_FOREACH(set, len, bit) do { \
zend_bitset _set = (set); \
uint32_t _i = (len); \
zend_ulong _test = Z_UL(1) << (ZEND_BITSET_ELM_SIZE * 8 - 1); \
while (_i-- > 0) { \
zend_ulong _x = _set[_i]; \
if (_x) { \
(bit) = ZEND_BITSET_ELM_SIZE * 8 * (_i + 1) - 1; \
for (; _x != 0; _x <<= Z_UL(1), (bit)--) { \
if (!(_x & _test)) continue; \
#define ZEND_BITSET_FOREACH_END() \
} \
} \
} \
} while (0)
#endif /* _ZEND_BITSET_H_ */
/*

16
ext/opcache/Optimizer/zend_ssa.c
View file

@ -856,10 +856,7 @@ int zend_build_ssa(zend_arena **arena, const zend_op_array *op_array, uint32_t b
}
if (!zend_bitset_empty(tmp, set_size)) {
i = op_array->last_var + op_array->T;
while (i > 0) {
i--;
if (zend_bitset_in(tmp, i)) {
ZEND_BITSET_REVERSE_FOREACH(tmp, set_size, i) {
zend_ssa_phi *phi = zend_arena_calloc(arena, 1,
sizeof(zend_ssa_phi) +
sizeof(int) * blocks[j].predecessors_count +
@ -877,8 +874,7 @@ int zend_build_ssa(zend_arena **arena, const zend_op_array *op_array, uint32_t b
phi->ssa_var = -1;
phi->next = ssa_blocks[j].phis;
ssa_blocks[j].phis = phi;
}
}
} ZEND_BITSET_FOREACH_END();
}
}
}
@ -921,10 +917,7 @@ int zend_build_ssa(zend_arena **arena, const zend_op_array *op_array, uint32_t b
}
if (!zend_bitset_empty(tmp, set_size)) {
i = op_array->last_var + op_array->T;
while (i > 0) {
i--;
if (zend_bitset_in(tmp, i)) {
ZEND_BITSET_REVERSE_FOREACH(tmp, set_size, i) {
zend_ssa_phi **pp = &ssa_blocks[j].phis;
while (*pp) {
if ((*pp)->pi <= 0 && (*pp)->var == i) {
@ -951,8 +944,7 @@ int zend_build_ssa(zend_arena **arena, const zend_op_array *op_array, uint32_t b
phi->next = NULL;
*pp = phi;
}
}
}
} ZEND_BITSET_FOREACH_END();
}
}
}