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165 commits

Author SHA1 Message Date
Dmitry Stogov
8ad2b59e12 Disable stack reuse optimization for x86 PIC code. It may clobber local variable used for Global Offset Table. 2020-12-01 15:20:06 +03:00
Dmitry Stogov
841b00f641 Preallocate stack space for JIT in execute_ex() to eliminate JIT prologue/epilogue. 2020-11-30 17:56:08 +03:00
Nikita Popov
d92229d8c7 Implement named parameters 
From an engine perspective, named parameters mainly add three
concepts:

 * The SEND_* opcodes now accept a CONST op2, which is the
   argument name. For now, it is looked up by linear scan and
   runtime cached.
 * This may leave UNDEF arguments on the stack. To avoid having
   to deal with them in other places, a CHECK_UNDEF_ARGS opcode
   is used to either replace them with defaults, or error.
 * For variadic functions, EX(extra_named_params) are collected
   and need to be freed based on ZEND_CALL_HAS_EXTRA_NAMED_PARAMS.

RFC: https://wiki.php.net/rfc/named_params

Closes GH-5357.
 2020-07-31 15:53:36 +02:00
Ilija Tovilo
9bf119832d
Implement nullsafe ?-> operator 
RFC: https://wiki.php.net/rfc/nullsafe_operator

Closes GH-5619.

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>
 2020-07-24 10:05:03 +02:00
Ilija Tovilo
9fa1d13301
Implement match expression 
RFC: https://wiki.php.net/rfc/match_expression_v2

Closes GH-5371.
 2020-07-09 23:52:17 +02:00
Nikita Popov
a66c60cce3 Throw Error when writing property of non-object 
This removes object auto-vivification support.

This also means that we can remove the corresponding special
handling for typed properites: We no longer need to check that a
property is convertible to stdClass if such a conversion might
take place indirectly due to a nested property write.

Additionally OBJ_W style operations now no longer modify the
object operand, and as such we no longer need to treat op1 as a
def in SSA form.

The next step would be to actually compile the whole LHS of OBJ_W
operations in R rather than W mode, but that causes issues with
SimpleXML, whose object handlers depend on the current compilation
structure.

Part of https://wiki.php.net/rfc/engine_warnings.
 2019-09-27 10:11:47 +02:00
Dmitry Stogov
48ca5a1e17 Replace ZEND_ASSIGN_ADD (and others) by ZEND_ASSIGN_OP, ZEND_ASSIGN_DIM_OP, ZEND_ASSGIN_OBJ_OP and ZEND_ASSIGN_STATIC_PROP_OP 2019-07-05 12:03:25 +03:00
Dmitry Stogov
ef05eab432 Improve zend_binary_assign_op helpers. 
Reorder opcode numbers to make ADD-POW and ASSIGN_ADD-ASSIGN_POW opcodes sequencional.
 2019-07-04 17:25:43 +03:00
Dmitry Stogov
56b8b165f8 Optimization of INC/DEC helpers 2019-07-03 10:33:03 +03:00
Nikita Popov
89b2d88659 Register class before fetching parent 
We want the class declaration to be available while compiling the
parent class.
 2019-06-11 13:09:33 +02:00
CHU Zhaowei
e829d08729 Implement spread operator in arrays 
RFC: https://wiki.php.net/rfc/spread_operator_for_array

Closes GH-3640.
 2019-05-13 14:42:43 +02:00
Zeev Suraski
a81202ac49 Adios, yearly copyright ranges 2019-01-30 11:48:28 +01:00
Nikita Popov
a50198d0fe Implement ??= operator 
RFC: https://wiki.php.net/rfc/null_coalesce_equal_operator

$a ??= $b is $a ?? ($a = $b), with the difference that $a is only
evaluated once, to the degree that this is possible. In particular
in $a[foo()] ?? $b function foo() is only ever called once.
However, the variable access themselves will be reevaluated.
 2019-01-22 11:12:04 +01:00
Nikita Popov
e219ec144e Implement typed properties 
RFC: https://wiki.php.net/rfc/typed_properties_v2

This is a squash of PR #3734, which is a squash of PR #3313.

Co-authored-by: Bob Weinand <bobwei9@hotmail.com>
Co-authored-by: Joe Watkins <krakjoe@php.net>
Co-authored-by: Dmitry Stogov <dmitry@zend.com>
 2019-01-11 15:49:06 +01:00
Michael Moravec
f5044a12dd Implement ZEND_ARRAY_KEY_EXISTS opcode to speed up array_key_exists() 2018-12-26 23:54:11 +03:00
Zeev Suraski
54dc07f3dc Update email addresses. We're still @Zend, but future proofing it... 2018-11-01 17:20:07 +02:00
Dmitry Stogov
d140df58e6 Keep information about unresolved interfaces in zend_class_entry->interface_names. 
Move interface implementation code into ZEND_DECLARE_*CLASS opcodes.
Remove ZEND_ADD_INTERFACE and ZEND_VERIFY_ABSTRACT_CLASS opcodes.
 2018-08-23 17:16:28 +03:00
Dmitry Stogov
67397970b2 Replace zend_class_entry->traits by persistent zend_class_entry->trait_names. 
Move trait binding code into ZEND_DECLARE_*CLASS opcodes.
Remove ZEND_ADD_TRIAIT and ZEND_BIND_TRAITS opcodes.
 2018-08-23 02:02:26 +03:00
Nikita Popov
b0af9ac733 Avoid live range references in opcodes 
Don't store the live range of the freed variable for FREE_ON_RETURN
frees, instead look it up at runtime. As this is an extremely
unlikely codepath (in particular, it requires a loop variable with
a throwing destructor), saving the runtime lookup of the live range
is not worth the extra complexity this adds everywhere else.
 2018-02-16 21:30:48 +01:00
Dmitry Stogov
ca035f26aa Moved "zval.u2.cache_slot" into free room of "zend_op" 2018-02-05 19:41:47 +03:00
Dmitry Stogov
3a794d39f0 Avoid repeatable ARG_SHOULD_BE_SENT_BY_REF() checks in FETCH_*FUNC_ARG and following SEND_VAR_EX. Perform the check once in a new CHECK_FUNC_ARG opcode and reuse in the following FETCH_*FUNC_ARG and SEND_FUNC_ARG (SEND_VAR_EX replacement). 2018-02-05 19:40:06 +03:00
Dmitry Stogov
ba298725d1 Changed CATCH instruction format (extended_value moved into op2, op2 into result, result into extended_value) 2018-01-31 22:39:30 +03:00
Dmitry Stogov
9c7fb529ce Changed FETCH_CONSTANT instruction format (extended_value moved into op1) 2018-01-31 18:15:25 +03:00
Dmitry Stogov
f67f455ef7 Changed FETCH_CLASS instruction format (extended_value moved into op1) 2018-01-31 18:14:43 +03:00
Dmitry Stogov
267b78550e Use fastcall calling convention 2018-01-16 10:33:41 +03:00
Xinchen Hui
a6519d0514 year++ 2018-01-02 12:57:58 +08:00
David Walker
6d4de4cf05 Implement list() reference assignments 
Support list() reference assignments of the form:

    list(&$a, list(&$b, $c)) = $d;

RFC: https://wiki.php.net/rfc/list_reference_assignment
 2017-12-09 13:39:52 +01:00
Dmitry Stogov
33b094479b TYPE_CHECK instruction changed. Now it keeps in extended_value a type mask. 
This makes check for "boolean" cheaper and allows check combination e.g. (is_string($a) || is_null($a))
 2017-11-23 15:58:34 +03:00
Dmitry Stogov
1180d8c801 Separate ISSET_ISEMPTY_CV/UNSET_CV from ISSET_ISEMPTY_VAR/UNSET_VAR 2017-07-17 14:11:50 +03:00
Dmitry Stogov
5b0e6248e6 Removed vim mode lines. zend_vm_opcodes.h loses these lines after regeneration. Lines in zend_vm_def.h lead to insertion inthe middle of zend_vm_execute.h. 2017-07-17 11:00:46 +03:00
Anatol Belski
bc5811f361 further sync for vim mode lines 2017-07-04 18:12:45 +02:00
Dmitry Stogov
6043f76ad7 Added ZEND_FUNC_NUM_ARGS, ZEND_FUNC_GET_ARGS instructions, to implement corresponding builtin functions. 
Special optimisation for "array_slice(INT, func_get_args())" pattern.
 2017-05-30 13:23:17 +03:00
Dmitry Stogov
f00d1c72b4 Added ZEND_GET_CLASS, ZEMD_GET_CALLED_CLASS, ZEND_GET_TYPE instructions, to implement corresponding builtin functions. 2017-05-25 18:41:28 +03:00
Dmitry Stogov
cd953269d3 Added ZEND_COUNT instruction, to implement corresponding builtin. 2017-05-25 12:52:34 +03:00
Dmitry Stogov
7c7383067f Added ZEND_IN_ARRAY instruction, implementing optimized in_array() builtin function, through hash lookup in flipped array 2017-05-24 23:00:48 +03:00
Dmitry Stogov
fc927dc263 Switch to HYBRID VM 2017-05-17 15:07:33 +03:00
Dmitry Stogov
27e01cd918 Implemented HYBRID VM instruction dispatch method that takes advantages of both CALL and GOTO VMs. 2017-05-03 10:01:22 +03:00
Nikita Popov
ad8652818a Implement jumptable optimization 2017-04-10 22:23:14 +02:00
Sammy Kaye Powers
9e29f841ce Update copyright headers to 2017 2017-01-02 09:30:12 -06:00
Dmitry Stogov
fbca255cd0 Fixed bug #71539 (Memory error on $arr[$a] =& $arr[$b] if RHS rehashes) 2016-07-07 00:59:44 +03:00
Dmitry Stogov
1a14533806 Introduce new CHECK_VAR instruction to keep warnings about undefined variables. 2016-06-30 21:40:34 +03:00
Dmitry Stogov
a9512af810 Implemented RFC: Fix inconsistent behavior of $this variable 
Squashed commit of the following:

commit bdd3b6895c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jun 16 00:19:42 2016 +0300

    Fixed GOTO VM

commit 2f1d7c8b89
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jun 15 21:01:57 2016 +0300

    Removed unused variable

commit cf749c42b0
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jun 15 19:06:16 2016 +0300

    Protection from $this reassign through mb_parse_str()

commit 59a9a6c83c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jun 15 18:14:50 2016 +0300

    Added type inference rule for FETCH_THIS opcode

commit 73f8d14a85
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 fa0881381e
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 e32cc528c0
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 41f1531b52
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon May 23 22:18:36 2016 +0300

    Fixed inconsistent $this behavior
 2016-06-16 02:30:23 +03:00
Dmitry Stogov
b111da96d9 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. 2016-05-31 04:06:00 +03:00
Dmitry Stogov
2ae21abdf7 Fixed bug #72213 (Finally leaks on nested exceptions). 
Squashed commit of the following:

commit 8461b0407f
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 0c71e24964
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed May 25 00:04:53 2016 +0300

    Move SAVE_OPLINE() to its original place

commit 111432a4df
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 4f21c06c2e
Author: Nikita Popov <nikic@php.net>
Date:   Tue May 24 14:55:27 2016 +0200

    Improve finally fix

commit da5c727499
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 cfcedf2fb4
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue May 24 02:59:27 2016 +0300

    Added test

commit 4c6aa93d43
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue May 24 00:38:20 2016 +0300

    Added tests

commit 8a8f4704b0
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon May 23 23:27:34 2016 +0300

    Fixed bug #72213 (Finally leaks on nested exceptions)
 2016-05-25 01:25:12 +03:00
Dmitry Stogov
ccf18da450 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.
 2016-05-13 01:40:15 +03:00
Dmitry Stogov
7f80514aa1 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.
 2016-03-11 16:51:06 +03:00
Dmitry Stogov
afb80df631 Allow usage of "TMPVARCV" pattern for cases when there is no difference in handling for TMP, VAR and CV operands. 2016-03-11 13:38:53 +03:00
Nikita Popov
9b57e07298 Consolidate op1/op2 vm flags 2016-01-21 21:15:05 +01:00
Dmitry Stogov
6579e48417 Introduced BIND_STATIC opcode instead of FETCH_R/FETCH_W(static)+ASSIGN/ASSIGN_REF (similar to BIND_GLOBAL). 
In the future we may refer to static variable by index instead of name, to eliminate hash lookup.
 2016-01-12 12:20:35 +03:00
Xinchen Hui
563659822d Merge branch 'PHP-7.0' 2016-01-02 17:56:54 +08:00