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/* pass 4
* - optimize INIT_FCALL_BY_NAME to DO_FCALL
*/
#if ZEND_EXTENSION_API_NO > PHP_5_3_X_API_NO
typedef struct _optimizer_call_info {
zend_function *func;
zend_op *opline;
} optimizer_call_info;
static void optimize_func_calls(zend_op_array *op_array, zend_persistent_script *script TSRMLS_DC) {
zend_op *opline = op_array->opcodes;
zend_op *end = opline + op_array->last;
int call = 0;
#if ZEND_EXTENSION_API_NO > PHP_5_4_X_API_NO
optimizer_call_info *call_stack = ecalloc(op_array->nested_calls + 1, sizeof(optimizer_call_info));
#else
int stack_size = 4;
optimizer_call_info *call_stack = ecalloc(stack_size, sizeof(optimizer_call_info));
#endif
while (opline < end) {
switch (opline->opcode) {
case ZEND_INIT_FCALL_BY_NAME:
case ZEND_INIT_NS_FCALL_BY_NAME:
if (ZEND_OP2_TYPE(opline) == IS_CONST) {
zend_function *func;
zval *function_name = &op_array->literals[opline->op2.constant + 1].constant;
if ((zend_hash_quick_find(&script->function_table,
Z_STRVAL_P(function_name), Z_STRLEN_P(function_name) + 1,
Z_HASH_P(function_name), (void **)&func) == SUCCESS)) {
call_stack[call].func = func;
}
}
/* break missing intentionally */
case ZEND_NEW:
case ZEND_INIT_METHOD_CALL:
case ZEND_INIT_STATIC_METHOD_CALL:
call_stack[call].opline = opline;
call++;
#if ZEND_EXTENSION_API_NO < PHP_5_5_X_API_NO
if (call == stack_size) {
stack_size += 4;
call_stack = erealloc(call_stack, sizeof(optimizer_call_info) * stack_size);
memset(call_stack + 4, 0, 4 * sizeof(optimizer_call_info));
}
#endif
break;
case ZEND_DO_FCALL_BY_NAME:
call--;
if (call_stack[call].func && call_stack[call].opline) {
zend_op *fcall = call_stack[call].opline;
opline->opcode = ZEND_DO_FCALL;
ZEND_OP1_TYPE(opline) = IS_CONST;
opline->op1.constant = fcall->op2.constant + 1;
op_array->literals[fcall->op2.constant + 1].cache_slot = op_array->literals[fcall->op2.constant].cache_slot;
literal_dtor(&ZEND_OP2_LITERAL(fcall));
if (fcall->opcode == ZEND_INIT_NS_FCALL_BY_NAME) {
literal_dtor(&op_array->literals[fcall->op2.constant + 2].constant);
}
MAKE_NOP(fcall);
} else if (opline->extended_value == 0 &&
call_stack[call].opline &&
call_stack[call].opline->opcode == ZEND_INIT_FCALL_BY_NAME &&
ZEND_OP2_TYPE(call_stack[call].opline) == IS_CONST) {
zend_op *fcall = call_stack[call].opline;
opline->opcode = ZEND_DO_FCALL;
ZEND_OP1_TYPE(opline) = IS_CONST;
opline->op1.constant = fcall->op2.constant + 1;
op_array->literals[fcall->op2.constant + 1].cache_slot = op_array->literals[fcall->op2.constant].cache_slot;
literal_dtor(&ZEND_OP2_LITERAL(fcall));
MAKE_NOP(fcall);
}
call_stack[call].func = NULL;
call_stack[call].opline = NULL;
break;
case ZEND_FETCH_FUNC_ARG:
case ZEND_FETCH_OBJ_FUNC_ARG:
case ZEND_FETCH_DIM_FUNC_ARG:
if (call_stack[call - 1].func) {
if (ARG_SHOULD_BE_SENT_BY_REF(call_stack[call - 1].func, (opline->extended_value & ZEND_FETCH_ARG_MASK))) {
opline->extended_value = 0;
opline->opcode -= 9;
} else {
opline->extended_value = 0;
opline->opcode -= 12;
}
}
break;
case ZEND_SEND_VAL:
if (opline->extended_value == ZEND_DO_FCALL_BY_NAME && call_stack[call - 1].func) {
if (ARG_MUST_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
/* We won't convert it into_DO_FCALL to emit error at run-time */
call_stack[call - 1].opline = NULL;
} else {
opline->extended_value = ZEND_DO_FCALL;
}
}
break;
case ZEND_SEND_VAR:
if (opline->extended_value == ZEND_DO_FCALL_BY_NAME && call_stack[call - 1].func) {
if (ARG_SHOULD_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
opline->opcode = ZEND_SEND_REF;
}
opline->extended_value = ZEND_DO_FCALL;
}
break;
case ZEND_SEND_VAR_NO_REF:
if (!(opline->extended_value & ZEND_ARG_COMPILE_TIME_BOUND) && call_stack[call - 1].func) {
if (ARG_SHOULD_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
opline->extended_value |= ZEND_ARG_COMPILE_TIME_BOUND | ZEND_ARG_SEND_BY_REF;
} else if (opline->extended_value) {
opline->extended_value |= ZEND_ARG_COMPILE_TIME_BOUND;
} else {
opline->opcode = ZEND_SEND_VAR;
opline->extended_value = ZEND_DO_FCALL;
}
}
break;
case ZEND_SEND_REF:
if (opline->extended_value == ZEND_DO_FCALL_BY_NAME && call_stack[call - 1].func) {
/* We won't handle run-time pass by reference */
call_stack[call - 1].opline = NULL;
}
break;
#if ZEND_EXTENSION_API_NO > PHP_5_5_X_API_NO
case ZEND_SEND_UNPACK:
call_stack[call - 1].func = NULL;
call_stack[call - 1].opline = NULL;
break;
#endif
default:
break;
}
opline++;
}
efree(call_stack);
}
#endif
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