Forbid scalar type hint names for use, class_alias

Move zend_object->guards into additional slot of zend_object->properties_table[]. As result size of objects without __get/__set/__unset/__isset magic methods is reduced.

Implement return types

RFC is documented here: https://wiki.php.net/rfc/return_types

Remove assignment of new by reference

bump year

bump year

Bump year

trailing whitespace removal

Decoupled class declaration statement into more granular pieces.

Optimized destruction of extra arguments passed to user functions.
If no refcounted arguments are passed, then destruction code is not triggered at all.
(Full rebuild required)

Removed useless checks

Don't count variadic argument in zend_func.common.num_args. This allows faster CALL/RETURN code.

fix integral constant overflow warning

as it's promoted to size_t when passed to ZEND_CALL_ARG

second shot on removing TSRMLS_*

first shot remove TSRMLS_* things

Removed ZEND_ACC_FINAL_CLASS which is unnecessary. This also fixed some currently defined classes as final which were just not being considered as such before.

Reduced size of zend_op on 64-bit systems.

the main idea - the smaller the zend_op structure, the lees memory traffic is required to load VM instructions during execution. The patch reduces

Reduced size of zend_op on 64-bit systems.

the main idea - the smaller the zend_op structure, the lees memory traffic is required to load VM instructions during execution. The patch reduces the size of each opcode from 48 to 32 bytes (saves 16 bytes for each opcode, and applications use thousands of opoceds). This reduced the number of CPU cache misses by 12% and improved performance of real-life apps by 1-2%.

The patch affects how constants and jump targets are represented in VM during execution. Previously they were implemented as absolute 64-bit pointers. Now they are relative 32-bit offsets.

In run-time constant now should be accessed as:
RT_CONSTANT(op_array, opine->op1) instead of opline->op1.zv
EX_CONSTANT(opline->op1) instead of opline->op1.zv

Jump targets:
OP_JMP_ADDR(opline, opline->op2) instead of opline->op2.jmp_addr

The patch doesn't change zend_op representation for 32-bit systems. They still use absolute addresses. The compile-time representation is also kept the same.

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Use zend_string* for op_array->arg_info[]->name and op_array->arg_info[]->class_name. For internal functions we still use char*.

Rename EX_VAR_2() into ZEND_CALL_VAR() and EX_VAR_NUM_2() into ZEND_CALL_VAR_NUM().

Pack EX(frame_info) into EX(This).u1.v.reserved. Rename "frame"kind" into "call_kind" and VM_FRAME_... into ZEND_CALL_...

Pack EX(num_args) into EX(This).u2.num_args

Get rid of EX(scope). In most cases we use EG(scope) anyway. EX(scope) was used to switch EG(scope) back after call, but it's possibleto use EX(func)->common.scope instead.

Changed "finally" handling. Removed EX(fast_ret) and EX(delayed_exception). Allocate and use additional IS_TMP_VAR slot on VM stack instead.

Reimplemented silence operator (@) handling on exceptions. Now each silence region is stored in op_array->brk_cont_array. On exception ZEND_HANDLE_EXCEPTION handler traverse this array and restore or

Reimplemented silence operator (@) handling on exceptions. Now each silence region is stored in op_array->brk_cont_array. On exception ZEND_HANDLE_EXCEPTION handler traverse this array and restore original EG(error_reporting) if exception occured inside a "silence" region.

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Improved object property access.