Keep ZEND_FUNC_INFO() for all run-time JIT triggers

JIT refactoring to allow run-time changes of JIT options (triggers, optimization_level, debug flags, etc)

Tracing JIT support for delayed call chain

Set "hybrid_ret_counters" only after links to "function entry" traces.

Better trace_buffer packing

Fixed #79582 (Crash seen when opcache.jit=1235 and opcache.jit_debug=2)

Replace zend_jit_trace_info.loop_kind by zend_jit_trace_info.flags

Move EG(vm_interrupt) checks at the end of the trace loops

More accurate tracing JIT for RETURN with unknown return address

Prevent taking side traces for exceptional cases. Always exit to VM interpreter.

Fixed comment

Initial support for IS_INDIRECT. Avoid type guards for IS_INDIRECT.

Replace ZEND_ASSERT() by conditional compilation abort.
Prevent endless loop through ESCAPE code.

Improved tracing JIT for nested calls

Register allocator and deoptimizer for tracing JIT.

cleanup

Free room for information about register allocation at astact stack and at trace_exit_info. Implement simple deoptimizer.

Save CPU regesters on side exit for deoptimization

Fix compilation error on mac with -Wshift-negative-value

Fix for mac OS build error seen in ccc49ead681add7bdf6a021c7a3420aff543bc1e
when shifting -1 (max argument count?)

```

Fix compilation error on mac with -Wshift-negative-value

Fix for mac OS build error seen in ccc49ead681add7bdf6a021c7a3420aff543bc1e
when shifting -1 (max argument count?)

```
ext/opcache/jit/zend_jit_trace.c:1668:2:
error: shifting a negative signed value is undefined
[-Werror,-Wshift-negative-value]
TRACE_FRAME_INIT(frame, op_array, 0, -1);
```

Closes GH-5284.

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JIT for FETCH_THIS

Change jit_trace_stack_frame layout

JIT for ZEND_CHECK_FUNC_ARG

Tracing JIT (it doesn't support register allocation yet)

Use opcache.jit=1255 to swith it on (the third digit 5 really matters)
Use opcache.jit_debug=0xff001 to see how it works and what

Tracing JIT (it doesn't support register allocation yet)

Use opcache.jit=1255 to swith it on (the third digit 5 really matters)
Use opcache.jit_debug=0xff001 to see how it works and what code it generates

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Avoid hash value recalculation on each counter update

Detect calls to abstract methods in get_method() already

Instead of checking for this during DO_FCALL, already detect this
case during get_method()/get_static_method(), similar to visibi

Detect calls to abstract methods in get_method() already

Instead of checking for this during DO_FCALL, already detect this
case during get_method()/get_static_method(), similar to visibility
checks.

This causes a minor difference in behavior, in that arguments will
no longer be evaluated. I think this is correct though (and consistent
with visibility errors).

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