Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Remove range inference for booleans.

Fix SCDF cleanup of unused basic block, kept only because of FREE of a loop var

Fixes oss-fuzz #41516

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fixed incorrect reference counter inference

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fixed SSA construction

Try harder to clean up unreachable loop free block

While we can't drop the loop free, we can drop other instructions
in the same block. We should also indicate that it no longer has

Try harder to clean up unreachable loop free block

While we can't drop the loop free, we can drop other instructions
in the same block. We should also indicate that it no longer has
predecessors.

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Extract helper for fetching class entry in optimizer

This code is repeated a few time. Two occurrences additionally
contained checks for user classes in CG(class_table) with the
same

Extract helper for fetching class entry in optimizer

This code is repeated a few time. Two occurrences additionally
contained checks for user classes in CG(class_table) with the
same file name, but as far as I know these should always be in
the script class_table, so I'm omitting the check here.

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Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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Merge branch 'PHP-8.0'

* PHP-8.0:
Fixed bug #81015

Remove unnecessary php.h includes from Zend/

The Zend/ directory really shouldn't be including php headers.
These particular includes are plain unnecessary.

Introduce pseudo-keyword ZEND_FALLTHROUGH

And use it instead of comments

Move optimizer into core

This only moves the files, adjusts the build system, exports APIs
and does minor fixups to make sure the code builds.

This does not yet try to make the

Move optimizer into core

This only moves the files, adjusts the build system, exports APIs
and does minor fixups to make sure the code builds.

This does not yet try to make the optimizer usable independently
of opcache.

Closes GH-6642.

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