Wave 12: bootstrap stdlib array ops fixtures (#1086)

[PurHur]

Summary

• Register wave 12 stdlib array builtins (array_push, array_unshift, array_filter, array_combine, array_reverse, compact, extract, sort, etc.) and filter_var/filter_input in SelfHostBuiltinPolicy so they use real Internal JIT lowering when PHP_COMPILER_SELFHOST_AOT=1 instead of no-op ExternalMethod stubs.
• Harden hashtable mutation persistence: materialize native arrays with correct packed metadata, re-box native arrays as TYPE_VALUE after in-place ops, and write back after sort().
• Add unit test guarding wave 12 array ops stay on real lowering under self-host AOT.

Partial #1086 — targets the four wave 12 bootstrap fixtures (stdlib_array_ops, array_value_box, stdlib_array_unshift, stdlib_filter).

Fixture results (AOT compile + link + stdout vs Zend)

Fixture	Expected	AOT actual	Status
test/bootstrap-aot/stdlib_array_ops.php	42671	42671	OK
test/bootstrap-aot/array_value_box.php	12	12	OK
test/bootstrap-aot/stdlib_array_unshift.php	1233	1233	OK
test/bootstrap-aot/stdlib_filter.php	420m	420m	OK

Test plan

• Four wave 12 bootstrap fixtures compile, link, and match Zend stdout
• php vendor/bin/phpunit test/unit/SelfHostBuiltinPolicyTest.php

Made with Cursor

[PurHur]

Superseded by #1162 (merged).