Minimal JIT support for JMP_NULL

Eliminate some EX_CALL_INFO() checks

Update operands range information accoring to the taken branches and use this indormation to eliminate useless overflow checks.

Merge branch 'jit_match'

* jit_match:
Support for CASE_STRICT
JIT for MATCH and CASE_STRICT instructions

Move AVOID_REFCOUNTING type info flag into a separate bit

JIT for MATCH and CASE_STRICT instructions

cleanup unused parameters

JIT for ZEND_ISSET_ISEMPTY_CV

Properly patch jmp tables

Add opcache.jit=tracing|function values, make on/yes/true synonym for tracing.

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 nam

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.

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Remove more unused func_info fields

Check for EG(exception) after leaving function frame

Replace ZEND_JIT_TRACE_MAX_EXIT_COUNTERS constant by opcache.jit_max_exit_counters configuration directive

Automatically enable DASM_CHECKS in debug mode

Emit diagnostic on dasm_link() failure

Implement nullsafe ?-> operator

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

Closes GH-5619.

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

Allow keeping result of FETCH_DIM_R in CPU register

Fixed bug #79864 (JIT segfault in Symfony OptionsResolver)

cleanup

Tracing JIT for SWITCH instructions

JIT for array merging

Implement match expression

RFC: https://wiki.php.net/rfc/match_expression_v2

Closes GH-5371.

Make tracing JIT to support operator overloading independently from opcache.optimization_level ini directive.

Support JIT jumptables on x64