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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_ */
/*

94
ext/opcache/Optimizer/zend_ssa.c
View file

@ -856,29 +856,25 @@ 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_ssa_phi *phi = zend_arena_calloc(arena, 1,
sizeof(zend_ssa_phi) +
sizeof(int) * blocks[j].predecessors_count +
sizeof(void*) * blocks[j].predecessors_count);
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 +
sizeof(void*) * blocks[j].predecessors_count);
if (!phi) {
goto failure;
}
phi->sources = (int*)(((char*)phi) + sizeof(zend_ssa_phi));
memset(phi->sources, 0xff, sizeof(int) * blocks[j].predecessors_count);
phi->use_chains = (zend_ssa_phi**)(((char*)phi->sources) + sizeof(int) * ssa->cfg.blocks[j].predecessors_count);
phi->pi = -1;
phi->var = i;
phi->ssa_var = -1;
phi->next = ssa_blocks[j].phis;
ssa_blocks[j].phis = phi;
if (!phi) {
goto failure;
}
}
phi->sources = (int*)(((char*)phi) + sizeof(zend_ssa_phi));
memset(phi->sources, 0xff, sizeof(int) * blocks[j].predecessors_count);
phi->use_chains = (zend_ssa_phi**)(((char*)phi->sources) + sizeof(int) * ssa->cfg.blocks[j].predecessors_count);
phi->pi = -1;
phi->var = i;
phi->ssa_var = -1;
phi->next = ssa_blocks[j].phis;
ssa_blocks[j].phis = phi;
} ZEND_BITSET_FOREACH_END();
}
}
}
@ -921,38 +917,34 @@ 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_ssa_phi **pp = &ssa_blocks[j].phis;
while (*pp) {
if ((*pp)->pi <= 0 && (*pp)->var == i) {
break;
}
pp = &(*pp)->next;
}
if (*pp == NULL) {
zend_ssa_phi *phi = zend_arena_calloc(arena, 1,
sizeof(zend_ssa_phi) +
sizeof(int) * blocks[j].predecessors_count +
sizeof(void*) * blocks[j].predecessors_count);
if (!phi) {
goto failure;
}
phi->sources = (int*)(((char*)phi) + sizeof(zend_ssa_phi));
memset(phi->sources, 0xff, sizeof(int) * blocks[j].predecessors_count);
phi->use_chains = (zend_ssa_phi**)(((char*)phi->sources) + sizeof(int) * ssa->cfg.blocks[j].predecessors_count);
phi->pi = -1;
phi->var = i;
phi->ssa_var = -1;
phi->next = NULL;
*pp = phi;
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) {
break;
}
pp = &(*pp)->next;
}
}
if (*pp == NULL) {
zend_ssa_phi *phi = zend_arena_calloc(arena, 1,
sizeof(zend_ssa_phi) +
sizeof(int) * blocks[j].predecessors_count +
sizeof(void*) * blocks[j].predecessors_count);
if (!phi) {
goto failure;
}
phi->sources = (int*)(((char*)phi) + sizeof(zend_ssa_phi));
memset(phi->sources, 0xff, sizeof(int) * blocks[j].predecessors_count);
phi->use_chains = (zend_ssa_phi**)(((char*)phi->sources) + sizeof(int) * ssa->cfg.blocks[j].predecessors_count);
phi->pi = -1;
phi->var = i;
phi->ssa_var = -1;
phi->next = NULL;
*pp = phi;
}
} ZEND_BITSET_FOREACH_END();
}
}
}