Removed ZEND_QM_ASSIGN_VAR and ZEND_JMP_SET_VAR opcodes (in PHPNG they did exacly the same as ZEND_QM_ASSIGN and ZEND_JMP_SET)

Refactored optimizer (compile different opimizer passes separately, instead of including *.c file)

Fixed return operand type (Use IS_TMP_VAR instead of IS_VAR in the same way as it was before AST patch)

master renames phase 7

master renames phase 2

master renames phase 1

basic macro replacements, all at once

ZEND_STRLEN and ZEND_DEFINED have IS_VAR results for now

This avoids issues with calls being expected to have an IS_VAR
result

Add copyright header

Remove old version PHP supports

Implemented builtin instruction for strlen()

Implemented builtin instruction for strlen()

Removed EG(in_execution). If EG(currentent_execute_data) is not NULL we are executing something.

Removed EG(active_op_array) and use corresponding value from EG(current_execute_data)

Refactored parameter passing mechanism.

In PHP-5.6 and below each argument passed to user function was copies on VM stack twice.
Now we always have ZEND_INIT_FCALL (or simular) opcode th

Refactored parameter passing mechanism.

In PHP-5.6 and below each argument passed to user function was copies on VM stack twice.
Now we always have ZEND_INIT_FCALL (or simular) opcode that pushes "call frame" on top of VM stack.
"Call frame" is actually the same zend_execute_data structure.
All the following ZEND_SEND instructions push arguments on top of the stack in a way that they directly comes into corresponding CV variables of the called frame. Extra arguments are copied at the end of stack frame (after all CV and TMP variables) on function enterance.

There are two minor incompatibilities:
1) It's not allowed to decalre functions redefining arguments e.g. "function foo($a,$a) {}".
2) func_get_arg() and func_get args() return the current value of argument and not the original value that was sent.

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Use arena allocator for optimizer temporary data structures

Optimize ZEND_POW (Rouven Weßling)

Split IS_BOOL into IS_FALSE and IS_TRUE

Optimized constant lookup

Cleanup

Moved zend_literal->cache_slot right into zval.
It should be accessed using Z_CACHE_SLOT() macro.
zend_literal structure is removed.
API functions that accepted pointer to zend_literal no

Moved zend_literal->cache_slot right into zval.
It should be accessed using Z_CACHE_SLOT() macro.
zend_literal structure is removed.
API functions that accepted pointer to zend_literal now accept pointer to zval or cache_slot directly.
Calls of such functiond that now accept cache_slot need to be changed to pass -1 instead of NULL.

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Fixed ZEND_CAST related optimizations (now it returns IS_VAR instead of IS_TMP_VAR)

Fixed interface constants inheritance.
Now we use IS_REFERENCE for inhereted class constants.
I might miss some edje cases.

Refactored ZVAL flags usage to simplify various checks (e.g. Z_REFCOUNTED(), candidate for GC, etc)

Changed data layout to allow more efficient operations