diff options
Diffstat (limited to 'ext/opcache/Optimizer/zend_optimizer.c')
| -rw-r--r-- | ext/opcache/Optimizer/zend_optimizer.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/ext/opcache/Optimizer/zend_optimizer.c b/ext/opcache/Optimizer/zend_optimizer.c new file mode 100644 index 0000000000..e46e5a2ece --- /dev/null +++ b/ext/opcache/Optimizer/zend_optimizer.c @@ -0,0 +1,139 @@ +/*
+ +----------------------------------------------------------------------+
+ | Zend Optimizer+ |
+ +----------------------------------------------------------------------+
+ | Copyright (c) 1998-2013 The PHP Group |
+ +----------------------------------------------------------------------+
+ | This source file is subject to version 3.01 of the PHP license, |
+ | that is bundled with this package in the file LICENSE, and is |
+ | available through the world-wide-web at the following url: |
+ | http://www.php.net/license/3_01.txt |
+ | If you did not receive a copy of the PHP license and are unable to |
+ | obtain it through the world-wide-web, please send a note to |
+ | license@php.net so we can mail you a copy immediately. |
+ +----------------------------------------------------------------------+
+ | Authors: Andi Gutmans <andi@zend.com> |
+ | Zeev Suraski <zeev@zend.com> |
+ | Stanislav Malyshev <stas@zend.com> |
+ | Dmitry Stogov <dmitry@zend.com> |
+ +----------------------------------------------------------------------+
+*/
+
+#include "Optimizer/zend_optimizer.h"
+#include "Optimizer/zend_optimizer_internal.h"
+#include "zend_API.h"
+#include "zend_constants.h"
+#include "zend_execute.h"
+
+#define OPTIMIZATION_LEVEL \
+ ZCG(accel_directives).optimization_level
+
+#if ZEND_EXTENSION_API_NO > PHP_5_3_X_API_NO
+int zend_optimizer_add_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC)
+{
+ int i = op_array->last_literal;
+ op_array->last_literal++;
+#if ZEND_EXTENSION_API_NO > PHP_5_3_X_API_NO
+ {
+ if (i >= CG(context).literals_size) {
+ CG(context).literals_size += 16; /* FIXME */
+ op_array->literals = (zend_literal*)erealloc(op_array->literals, CG(context).literals_size * sizeof(zend_literal));
+ }
+ }
+#else
+ if (i >= op_array->size_literal) {
+ op_array->size_literal += 16; /* FIXME */
+ op_array->literals = (zend_literal*)erealloc(op_array->literals, op_array->size_literal * sizeof(zend_literal));
+ }
+#endif
+ op_array->literals[i].constant = *zv;
+ Z_SET_REFCOUNT(op_array->literals[i].constant, 2);
+ Z_SET_ISREF(op_array->literals[i].constant);
+ return i;
+}
+
+# define LITERAL_LONG(op, val) do { \
+ zval _c; \
+ ZVAL_LONG(&_c, val); \
+ op.constant = zend_optimizer_add_literal(op_array, &_c TSRMLS_CC); \
+ } while (0)
+
+# define LITERAL_BOOL(op, val) do { \
+ zval _c; \
+ ZVAL_BOOL(&_c, val); \
+ op.constant = zend_optimizer_add_literal(op_array, &_c TSRMLS_CC); \
+ } while (0)
+
+# define literal_dtor(zv) do { \
+ zval_dtor(zv); \
+ Z_TYPE_P(zv) = IS_NULL; \
+ } while (0)
+
+#define COPY_NODE(target, src) do { \
+ target ## _type = src ## _type; \
+ target = src; \
+ } while (0)
+
+#else
+
+# define LITERAL_LONG(op, val) ZVAL_LONG(&op.u.constant, val)
+
+# define LITERAL_BOOL(op, val) ZVAL_BOOL(&op.u.constant, val)
+
+# define literal_dtor(zv) zval_dtor(zv)
+
+#define COPY_NODE(target, src) do { \
+ target = src; \
+ } while (0)
+
+#endif
+
+#include "Optimizer/nop_removal.c"
+#include "Optimizer/block_pass.c"
+#include "Optimizer/optimize_temp_vars_5.c"
+
+void zend_optimizer(zend_op_array *op_array TSRMLS_DC)
+{
+ if (op_array->type == ZEND_EVAL_CODE ||
+ (op_array->fn_flags & ZEND_ACC_INTERACTIVE)) {
+ return;
+ }
+
+ /* pass 1
+ * - substitute persistent constants (true, false, null, etc)
+ * - perform compile-time evaluation of constant binary and unary operations
+ * - optimize series of ADD_STRING and/or ADD_CHAR
+ * - convert CAST(IS_BOOL,x) into BOOL(x)
+ * - convert INTI_FCALL_BY_NAME + DO_FCALL_BY_NAME into DO_FCALL
+ */
+#include "Optimizer/pass1_5.c"
+
+ /* pass 2:
+ * - convert non-numeric constants to numeric constants in numeric operators
+ * - optimize constant conditional JMPs
+ * - optimize static BRKs and CONTs
+ */
+#include "Optimizer/pass2.c"
+
+ /* pass 3:
+ * - optimize $i = $i+expr to $i+=expr
+ * - optimize series of JMPs
+ * - change $i++ to ++$i where possible
+ */
+#include "Optimizer/pass3.c"
+
+ /* pass 5:
+ * - CFG optimization
+ */
+#include "Optimizer/pass5.c"
+
+ /* pass 9:
+ * - Optimize temp variables usage
+ */
+#include "Optimizer/pass9.c"
+
+ /* pass 10:
+ * - remove NOPs
+ */
+#include "Optimizer/pass10.c"
+}
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