[RFC] Path to Saner Increment/Decrement operators (#10358)

* Add behavioural tests for incdec operators

* Add support to ++/-- for objects castable to _IS_NUMBER

* Add str_

[RFC] Path to Saner Increment/Decrement operators (#10358)

* Add behavioural tests for incdec operators

* Add support to ++/-- for objects castable to _IS_NUMBER

* Add str_increment() function

* Add str_decrement() function

RFC: https://wiki.php.net/rfc/saner-inc-dec-operators

Co-authored-by: Ilija Tovilo <ilija.tovilo@me.com>
Co-authored-by: Arnaud Le Blanc <arnaud.lb@gmail.com>

show more ...

Drop range inference for IS_NULL/IS_FALSE/IS_TRUE.

These values not always converted to IS_LONG (e.g. by -- and ++) and
this leads to incorrect range inferene and later to incorrect JIT

Drop range inference for IS_NULL/IS_FALSE/IS_TRUE.

These values not always converted to IS_LONG (e.g. by -- and ++) and
this leads to incorrect range inferene and later to incorrect JIT code
generation.

show more ...