Revert "Fix return value memory leaks upon exceptions in opcode operand freeing"

This reverts commit 9ad9d7ae375a6e8847ceaab287d3d23e0963a06e.

Fix return value memory leaks upon exceptions in opcode operand freeing

Remove redundant \t

Fixed executor without global register variales (gcc warnings or clang errors)

Turn safe timeout handling into general interrupt handling ability.

Implemented RFC: Fix inconsistent behavior of $this variable
Squashed commit of the following:

commit bdd3b6895c3ce3eacfcf7d4bf4feb8dfa61801fd
Author: Dmitry Stogov <dmitry@zend.com>

Implemented RFC: Fix inconsistent behavior of $this variable
Squashed commit of the following:

commit bdd3b6895c3ce3eacfcf7d4bf4feb8dfa61801fd
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Jun 16 00:19:42 2016 +0300

Fixed GOTO VM

commit 2f1d7c8b89ce821086d357cf65f629f040a85c03
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 21:01:57 2016 +0300

Removed unused variable

commit cf749c42b0b1919f70b1e7d6dcbfff76899506af
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 19:06:16 2016 +0300

Protection from $this reassign through mb_parse_str()

commit 59a9a6c83c66b666971e57f1173b33a422166efd
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 18:14:50 2016 +0300

Added type inference rule for FETCH_THIS opcode

commit 73f8d14a856f14a461430b3c7534ab2ce870cbf6
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 18:11:18 2016 +0300

Restored PHP-7 behavior of isset($this->foo).
It throws exception if not in object context.
Removed useless opcode handlers.

commit fa0881381e8ae97e022ae5d1ec0851c952f33c82
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 31 12:25:47 2016 +0300

Changed "Notice: Undefined variable: this" into "Exception: Using $this when not in object context".

commit e32cc528c0f2c97963d8ec83eff0269f1f45af18
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 02:02:43 2016 +0300

Throw exception on attempt to re-assign $this through extract() and parse_str().

commit 41f1531b52113ec8a4c208aa6b9ef50f1386bb3f
Author: Dmitry Stogov <dmitry@zend.com>
Date: Mon May 23 22:18:36 2016 +0300

Fixed inconsistent $this behavior

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Remove a few references to $GLOBALS and clean up a bit

Split ZEND_SEND_VAR_NO_REF into ZEND_SEND_VAR_NO_REF and ZEND_SEND_VAR_NO_REF_EX (similar to ZEND_SEND_VAL) and remove ZEND_ARG_* flags.

Fixed bug #72213 (Finally leaks on nested exceptions).

Squashed commit of the following:

commit 8461b0407fc9eab0869d43b84e6a92ba2fe06997
Author: Dmitry Stogov <dmitry@zend.com>

Fixed bug #72213 (Finally leaks on nested exceptions).

Squashed commit of the following:

commit 8461b0407fc9eab0869d43b84e6a92ba2fe06997
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed May 25 00:34:42 2016 +0300

Rmoved zend_try_catch_element.parent and walk through op_array.try_catch_array backward from the current try_cacth_offset.

commit 0c71e249649bed178bfbef30bb3e63c57f07af05
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed May 25 00:04:53 2016 +0300

Move SAVE_OPLINE() to its original place

commit 111432a4df738fcd65878a42f23194dc3c4983a2
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed May 25 00:01:10 2016 +0300

Separate the common part of ZEND_HANDLE_EXCEPTION and FAST_RET into zend_dispatch_try_catch_finally_helper.

commit 4f21c06c2ec17819a708bc037f318784554a6ecd
Author: Nikita Popov <nikic@php.net>
Date: Tue May 24 14:55:27 2016 +0200

Improve finally fix

commit da5c7274997b8308e682b5bf280124e3a1483086
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 10:36:08 2016 +0300

Fixed Zend/tests/try/bug70228_3.phpt and Zend/tests/try/bug70228_4.phpt

commit cfcedf2fb4f4fc1f7de9f7d53a3037fed7795f19
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 02:59:27 2016 +0300

Added test

commit 4c6aa93d43da941eb4fda15b48154bfb104bdc04
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 00:38:20 2016 +0300

Added tests

commit 8a8f4704b0eca2e460d42c1f253a363b0db8e510
Author: Dmitry Stogov <dmitry@zend.com>
Date: Mon May 23 23:27:34 2016 +0300

Fixed bug #72213 (Finally leaks on nested exceptions)

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Specialize ZEND_ASSIGN_ADD and family according to value of opline->extended_value

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()

Reduced amount of code generated for interrupt handling.
Improved ZEND_VM_INTERRUPT_CHECK() placement (always perform checks after opcode handler completion, when instruction pointer value is alr

Reduced amount of code generated for interrupt handling.
Improved ZEND_VM_INTERRUPT_CHECK() placement (always perform checks after opcode handler completion, when instruction pointer value is alredy changed to the next opcode).

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Squashed commit of the following:

commit 98471821a89d7106de508fc544504ba674025abe
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Mar 17 21:56:04 2016 +0300

Fixed wr

Squashed commit of the following:

commit 98471821a89d7106de508fc544504ba674025abe
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Mar 17 21:56:04 2016 +0300

Fixed wrong constant usage

commit 8183b811e74c2989bcd8ab9d870fc3adbe973980
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Mar 17 21:10:23 2016 +0300

Added ability to serialize and serialize opcode handlers for file-cache

commit 3516b261de7694bb1f34c5ae1adfb2f29dfab7bf
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Mar 17 10:11:59 2016 +0300

Added missed file

commit f4475a23608623ccbf11b00c1c74df1db55dffa2
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Mar 17 10:00:45 2016 +0300

Transparently introduce type-specialized opcode handlers.
This affects only PHP VM, and doesn't change anything else.

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Sorry for that... Merged by accident....

Revert "Transparently introduce type-specialized opcode handlers."

This reverts commit 59d00b8bcc05f72b29c3c768542b2bb6e69e1af4.

Transparently introduce type-specialized opcode handlers.
This affects only PHP VM, and doesn't change anything else.

Added ability to avoid code generation for useless opcode handlers.

- SPEC(NO_CONST_CONST) may prevent codegeneration for handlers like ADD_SPEC_CONST_CONST. Compiler and optimizaer should c

Added ability to avoid code generation for useless opcode handlers.

- SPEC(NO_CONST_CONST) may prevent codegeneration for handlers like ADD_SPEC_CONST_CONST. Compiler and optimizaer should care about constants folding.
- SPEC(COMMUTATIVE) generate only single handler instead of two eqivalents like ADD_SPEC_CONST_CV and ADD_SPEC_CV_CONST. Compiler and optimizer should care avout operands swapping.

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Allow usage of "TMPVARCV" pattern for cases when there is no difference in handling for TMP, VAR and CV operands.

Added possibility for extra specialization for SMART_BRANCH (e.g. IS_EQUAL+JMPZ superinstruction).

It's better to support 5.3 as well

Remove EXT_TYPE_UNUSED in favor of IS_UNUSED

This means we no longer allocate an unused VAR for the retval of
instructions that support unused results.

Nearly all instructions a

Remove EXT_TYPE_UNUSED in favor of IS_UNUSED

This means we no longer allocate an unused VAR for the retval of
instructions that support unused results.

Nearly all instructions already used the result variable only if
it was used. The only exception to this was the return value
variable for internal function call results. I've adjusted the code
to use a stack zval for the unused return case now. As we have
retval specialization now, we know that it doesn't matter.

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Use extra specialization to eliminate run-time checks for conditions known at compile time in SEND_VAL_EX and SEND_VAR_EX.

Add extra VM operand specialization

For now RETVAL and OP_DATA= are supported

Consolidate op1/op2 vm flags

bump year which is missed in rev 49493a2