Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-count

Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-counting (disabled for now).
These macros are going to be used to eliminate race-condintions during reference-counting on data shared between threads.

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Always use IS_CONSTANT_AST (IS_CONSTANT is removed).

Changed the way VM accesses constant operands in 64-bit builds.

further sync for vim mode lines

Split zend_init_execute_data() into zend_init_func_execute_data() and zend_init_code_execute_data()

Refactored API for constant array element propagation

Merge branch 'PHP-7.1'

Merge branch 'PHP-7.0' into PHP-7.1

Fixed bug #73960

Update copyright headers to 2017

Update copyright headers to 2017

Update copyright headers to 2017

further normalizations, uint vs uint32_t

fix merge mistake

yet one more replacement run

Export zend_do_fcall_overloaded()

Turn IS_TYPE_COLLECTABLE zval flag into GC_COLLECTABLE zend_refcounted flag.
This simplifies checks and allows reset this flag for "acyclic" arrays and objects.

Implemented RFC: Replace "Missing argument" warning with "Too few arguments" exception
Squashed commit of the following:

commit 8b45fa2acb8cd92542a39e1e4720fe1f4fabc26c
Author: Dmitr

Implemented RFC: Replace "Missing argument" warning with "Too few arguments" exception
Squashed commit of the following:

commit 8b45fa2acb8cd92542a39e1e4720fe1f4fabc26c
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Jun 16 01:52:50 2016 +0300

Separate slow path of ZEND_RECV into a cold function.

commit 9e18895ee59c64c93a96b1ba3061355c4663e962
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 23:26:28 2016 +0300

Required argument can't be IS_UNDEF anymore.

commit 662db66e3943d4455c65e4f987bb54abf724ecb2
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 31 17:14:50 2016 +0300

Replace "Missing argument" warning by "Too few arguments" exception.

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Fixed mixed declarations and code

Eliminated checks for (func->op_array.fn_flags & ZEND_ACC_GENERATOR) in fast path of DO_FCALL* handlers.
This slightly improves calls to regular function and method calls in cost of a bit slower

Eliminated checks for (func->op_array.fn_flags & ZEND_ACC_GENERATOR) in fast path of DO_FCALL* handlers.
This slightly improves calls to regular function and method calls in cost of a bit slower generator initialization.
Separate call frame for generators, allocated on heap, now created by ZEND_GENERATOR_CREATE instruction.

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Removed useless code

Use main VM stack for generators. Only single call frame for generator itself is allocated on heap, call frames for nested functions are allocated on main VM stack. In case "yield" used in context of

Use main VM stack for generators. Only single call frame for generator itself is allocated on heap, call frames for nested functions are allocated on main VM stack. In case "yield" used in context of another function call, call stack has to be frozen and then restored.

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Reimplemented Bob's commit bac6fdb0c52c924e726c5a78de8858bf27b6586b without insignificant renaming and white-space changes

Revert "Refactor zval cleanup into single function"

This reverts commit bac6fdb0c52c924e726c5a78de8858bf27b6586b.

Refactor zval cleanup into single function

Also use zval_ptr_dtor_nogc() everywhere in Zend in favor of zval_dtor()

Export zend_pass_function to allow comparisons against it

- get rid of EG(scope). zend_get_executed_scope() should be used instead.
- ichanged zval_update_constant_ex(). Use IS_TYPE_IMMUTABLE flag on shared constants and AST, instead of "inline_change"

- get rid of EG(scope). zend_get_executed_scope() should be used instead.
- ichanged zval_update_constant_ex(). Use IS_TYPE_IMMUTABLE flag on shared constants and AST, instead of "inline_change" parameter.

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