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133 lines
4.3 KiB
C
133 lines
4.3 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 "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_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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#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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