mirror of
https://github.com/php/php-src.git
synced 2024-09-24 19:37:26 +00:00
352 lines
12 KiB
C
352 lines
12 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend OPcache |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2013 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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| Stanislav Malyshev <stas@zend.com> |
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| Dmitry Stogov <dmitry@zend.com> |
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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#include "Optimizer/zend_optimizer.h"
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#include "Optimizer/zend_optimizer_internal.h"
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#include "zend_API.h"
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#include "zend_constants.h"
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#include "zend_execute.h"
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#define OPTIMIZATION_LEVEL \
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ZCG(accel_directives).optimization_level
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#if ZEND_EXTENSION_API_NO >= PHP_5_5_X_API_NO
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static int zend_optimizer_lookup_cv(zend_op_array *op_array, char* name, int name_len)
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{
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int i = 0;
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ulong hash_value = zend_inline_hash_func(name, name_len+1);
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while (i < op_array->last_var) {
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if (op_array->vars[i].name == name ||
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(op_array->vars[i].hash_value == hash_value &&
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op_array->vars[i].name_len == name_len &&
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memcmp(op_array->vars[i].name, name, name_len) == 0)) {
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return i;
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}
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i++;
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}
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i = op_array->last_var;
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op_array->last_var++;
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op_array->vars = erealloc(op_array->vars, op_array->last_var * sizeof(zend_compiled_variable));
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if (IS_INTERNED(name)) {
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op_array->vars[i].name = name;
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} else {
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op_array->vars[i].name = estrndup(name, name_len);
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}
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op_array->vars[i].name_len = name_len;
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op_array->vars[i].hash_value = hash_value;
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return i;
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}
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#endif
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#if ZEND_EXTENSION_API_NO > PHP_5_3_X_API_NO
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int zend_optimizer_add_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC)
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{
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int i = op_array->last_literal;
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op_array->last_literal++;
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if (i >= CG(context).literals_size) {
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CG(context).literals_size += 16; /* FIXME */
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op_array->literals = (zend_literal*)erealloc(op_array->literals, CG(context).literals_size * sizeof(zend_literal));
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}
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op_array->literals[i].constant = *zv;
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op_array->literals[i].hash_value = 0;
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op_array->literals[i].cache_slot = -1;
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Z_SET_REFCOUNT(op_array->literals[i].constant, 2);
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Z_SET_ISREF(op_array->literals[i].constant);
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return i;
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}
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# define LITERAL_LONG(op, val) do { \
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zval _c; \
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ZVAL_LONG(&_c, val); \
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op.constant = zend_optimizer_add_literal(op_array, &_c TSRMLS_CC); \
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} while (0)
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# define LITERAL_BOOL(op, val) do { \
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zval _c; \
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ZVAL_BOOL(&_c, val); \
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op.constant = zend_optimizer_add_literal(op_array, &_c TSRMLS_CC); \
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} while (0)
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# define literal_dtor(zv) do { \
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zval_dtor(zv); \
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Z_TYPE_P(zv) = IS_NULL; \
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} while (0)
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#define COPY_NODE(target, src) do { \
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target ## _type = src ## _type; \
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target = src; \
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} while (0)
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#else
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# define LITERAL_LONG(op, val) ZVAL_LONG(&op.u.constant, val)
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# define LITERAL_BOOL(op, val) ZVAL_BOOL(&op.u.constant, val)
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# define literal_dtor(zv) zval_dtor(zv)
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#define COPY_NODE(target, src) do { \
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target = src; \
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} while (0)
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#endif
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static void update_op1_const(zend_op_array *op_array,
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zend_op *opline,
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zval *val TSRMLS_DC)
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{
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if (opline->opcode == ZEND_FREE) {
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MAKE_NOP(opline);
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zval_dtor(val);
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} else {
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ZEND_OP1_TYPE(opline) = IS_CONST;
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#if ZEND_EXTENSION_API_NO > PHP_5_3_X_API_NO
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if (Z_TYPE_P(val) == IS_STRING) {
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switch (opline->opcode) {
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case ZEND_INIT_STATIC_METHOD_CALL:
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case ZEND_CATCH:
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case ZEND_FETCH_CONSTANT:
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opline->op1.constant = zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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Z_HASH_P(&ZEND_OP1_LITERAL(opline)) = zend_hash_func(Z_STRVAL(ZEND_OP1_LITERAL(opline)), Z_STRLEN(ZEND_OP1_LITERAL(opline)) + 1);
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op_array->literals[opline->op1.constant].cache_slot = op_array->last_cache_slot++;
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zend_str_tolower(Z_STRVAL_P(val), Z_STRLEN_P(val));
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zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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op_array->literals[opline->op1.constant+1].hash_value = zend_hash_func(Z_STRVAL(op_array->literals[opline->op1.constant+1].constant), Z_STRLEN(op_array->literals[opline->op1.constant+1].constant) + 1);
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break;
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case ZEND_DO_FCALL:
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zend_str_tolower(Z_STRVAL_P(val), Z_STRLEN_P(val));
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opline->op1.constant = zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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Z_HASH_P(&ZEND_OP1_LITERAL(opline)) = zend_hash_func(Z_STRVAL(ZEND_OP1_LITERAL(opline)), Z_STRLEN(ZEND_OP1_LITERAL(opline)) + 1);
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op_array->literals[opline->op1.constant].cache_slot = op_array->last_cache_slot++;
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break;
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default:
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opline->op1.constant = zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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Z_HASH_P(&ZEND_OP1_LITERAL(opline)) = zend_hash_func(Z_STRVAL(ZEND_OP1_LITERAL(opline)), Z_STRLEN(ZEND_OP1_LITERAL(opline)) + 1);
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break;
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}
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} else {
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opline->op1.constant = zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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}
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#else
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ZEND_OP1_LITERAL(opline) = *val;
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#endif
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}
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}
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static void update_op2_const(zend_op_array *op_array,
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zend_op *opline,
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zval *val TSRMLS_DC)
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{
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ZEND_OP2_TYPE(opline) = IS_CONST;
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#if ZEND_EXTENSION_API_NO > PHP_5_3_X_API_NO
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opline->op2.constant = zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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if (Z_TYPE_P(val) == IS_STRING) {
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Z_HASH_P(&ZEND_OP2_LITERAL(opline)) = zend_hash_func(Z_STRVAL(ZEND_OP2_LITERAL(opline)), Z_STRLEN(ZEND_OP2_LITERAL(opline)) + 1);
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switch (opline->opcode) {
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case ZEND_FETCH_R:
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case ZEND_FETCH_W:
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case ZEND_FETCH_RW:
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case ZEND_FETCH_IS:
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case ZEND_FETCH_UNSET:
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case ZEND_FETCH_FUNC_ARG:
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case ZEND_FETCH_CLASS:
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case ZEND_INIT_FCALL_BY_NAME:
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/*case ZEND_INIT_NS_FCALL_BY_NAME:*/
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case ZEND_UNSET_VAR:
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case ZEND_ISSET_ISEMPTY_VAR:
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case ZEND_ADD_INTERFACE:
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case ZEND_ADD_TRAIT:
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op_array->literals[opline->op2.constant].cache_slot = op_array->last_cache_slot++;
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zend_str_tolower(Z_STRVAL_P(val), Z_STRLEN_P(val));
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zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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op_array->literals[opline->op2.constant+1].hash_value = zend_hash_func(Z_STRVAL(op_array->literals[opline->op2.constant+1].constant), Z_STRLEN(op_array->literals[opline->op2.constant+1].constant) + 1);
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break;
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case ZEND_INIT_METHOD_CALL:
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case ZEND_INIT_STATIC_METHOD_CALL:
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zend_str_tolower(Z_STRVAL_P(val), Z_STRLEN_P(val));
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zend_optimizer_add_literal(op_array, val TSRMLS_CC);
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op_array->literals[opline->op2.constant+1].hash_value = zend_hash_func(Z_STRVAL(op_array->literals[opline->op2.constant+1].constant), Z_STRLEN(op_array->literals[opline->op2.constant+1].constant) + 1);
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/* break missing intentionally */
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/*case ZEND_FETCH_CONSTANT:*/
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case ZEND_ASSIGN_OBJ:
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case ZEND_FETCH_OBJ_R:
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case ZEND_FETCH_OBJ_W:
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case ZEND_FETCH_OBJ_RW:
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case ZEND_FETCH_OBJ_IS:
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case ZEND_FETCH_OBJ_UNSET:
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case ZEND_FETCH_OBJ_FUNC_ARG:
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case ZEND_UNSET_OBJ:
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case ZEND_PRE_INC_OBJ:
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case ZEND_PRE_DEC_OBJ:
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case ZEND_POST_INC_OBJ:
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case ZEND_POST_DEC_OBJ:
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case ZEND_ISSET_ISEMPTY_PROP_OBJ:
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op_array->literals[opline->op2.constant].cache_slot = op_array->last_cache_slot;
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op_array->last_cache_slot += 2;
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break;
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case ZEND_ASSIGN_ADD:
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case ZEND_ASSIGN_SUB:
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case ZEND_ASSIGN_MUL:
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case ZEND_ASSIGN_DIV:
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case ZEND_ASSIGN_MOD:
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case ZEND_ASSIGN_SL:
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case ZEND_ASSIGN_SR:
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case ZEND_ASSIGN_CONCAT:
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case ZEND_ASSIGN_BW_OR:
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case ZEND_ASSIGN_BW_AND:
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case ZEND_ASSIGN_BW_XOR:
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if (opline->extended_value == ZEND_ASSIGN_OBJ) {
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op_array->literals[opline->op2.constant].cache_slot = op_array->last_cache_slot;
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op_array->last_cache_slot += 2;
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}
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break;
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#if ZEND_EXTENSION_API_NO >= PHP_5_4_X_API_NO
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case ZEND_OP_DATA:
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if ((opline-1)->opcode == ZEND_ASSIGN_DIM ||
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((opline-1)->extended_value == ZEND_ASSIGN_DIM &&
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((opline-1)->opcode == ZEND_ASSIGN_ADD ||
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(opline-1)->opcode == ZEND_ASSIGN_SUB ||
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(opline-1)->opcode == ZEND_ASSIGN_MUL ||
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(opline-1)->opcode == ZEND_ASSIGN_DIV ||
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(opline-1)->opcode == ZEND_ASSIGN_MOD ||
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(opline-1)->opcode == ZEND_ASSIGN_SL ||
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(opline-1)->opcode == ZEND_ASSIGN_SR ||
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(opline-1)->opcode == ZEND_ASSIGN_CONCAT ||
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(opline-1)->opcode == ZEND_ASSIGN_BW_OR ||
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(opline-1)->opcode == ZEND_ASSIGN_BW_AND ||
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(opline-1)->opcode == ZEND_ASSIGN_BW_XOR))) {
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goto check_numeric;
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}
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break;
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case ZEND_ISSET_ISEMPTY_DIM_OBJ:
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case ZEND_ADD_ARRAY_ELEMENT:
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case ZEND_INIT_ARRAY:
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case ZEND_UNSET_DIM:
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case ZEND_FETCH_DIM_R:
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case ZEND_FETCH_DIM_W:
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case ZEND_FETCH_DIM_RW:
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case ZEND_FETCH_DIM_IS:
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case ZEND_FETCH_DIM_FUNC_ARG:
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case ZEND_FETCH_DIM_UNSET:
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case ZEND_FETCH_DIM_TMP_VAR:
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check_numeric:
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{
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ulong index;
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int numeric = 0;
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ZEND_HANDLE_NUMERIC_EX(Z_STRVAL_P(val), Z_STRLEN_P(val)+1, index, numeric = 1);
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if (numeric) {
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zval_dtor(val);
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ZVAL_LONG(val, index);
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op_array->literals[opline->op2.constant].constant = *val;
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}
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}
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break;
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#endif
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default:
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break;
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}
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}
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#else
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ZEND_OP2_LITERAL(opline) = *val;
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#endif
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}
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static void replace_tmp_by_const(zend_op_array *op_array,
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zend_op *opline,
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zend_uint var,
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zval *val
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TSRMLS_DC)
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{
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zend_op *end = op_array->opcodes + op_array->last;
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while (opline < end) {
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if (ZEND_OP1_TYPE(opline) == IS_TMP_VAR &&
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ZEND_OP1(opline).var == var) {
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update_op1_const(op_array, opline, val TSRMLS_CC);
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/* TMP_VAR my be used only once */
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break;
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}
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if (ZEND_OP2_TYPE(opline) == IS_TMP_VAR &&
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ZEND_OP2(opline).var == var) {
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update_op2_const(op_array, opline, val TSRMLS_CC);
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/* TMP_VAR my be used only once */
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break;
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}
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opline++;
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}
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}
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#include "Optimizer/nop_removal.c"
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#include "Optimizer/block_pass.c"
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#include "Optimizer/optimize_temp_vars_5.c"
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void zend_optimizer(zend_op_array *op_array TSRMLS_DC)
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{
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if (op_array->type == ZEND_EVAL_CODE ||
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(op_array->fn_flags & ZEND_ACC_INTERACTIVE)) {
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return;
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}
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/* pass 1
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* - substitute persistent constants (true, false, null, etc)
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* - perform compile-time evaluation of constant binary and unary operations
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* - optimize series of ADD_STRING and/or ADD_CHAR
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* - convert CAST(IS_BOOL,x) into BOOL(x)
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* - convert INTI_FCALL_BY_NAME + DO_FCALL_BY_NAME into DO_FCALL
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*/
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#include "Optimizer/pass1_5.c"
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/* pass 2:
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* - convert non-numeric constants to numeric constants in numeric operators
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* - optimize constant conditional JMPs
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* - optimize static BRKs and CONTs
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*/
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#include "Optimizer/pass2.c"
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/* pass 3:
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* - optimize $i = $i+expr to $i+=expr
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* - optimize series of JMPs
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* - change $i++ to ++$i where possible
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*/
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#include "Optimizer/pass3.c"
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/* pass 5:
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* - CFG optimization
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*/
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#include "Optimizer/pass5.c"
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/* pass 9:
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* - Optimize temp variables usage
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*/
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#include "Optimizer/pass9.c"
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/* pass 10:
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* - remove NOPs
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*/
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#include "Optimizer/pass10.c"
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}
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