Test: revert PR #4829 to verify phpbench catches the regression

[ondrejmirtes]

Do not merge. This PR is a deliberate experiment to verify that the phpbench baseline added in 196eba6 (with tests/bench/data/phpdoc-inheritance-speedup.php from d34f7cc) actually detects a regression in PhpDocInheritanceResolver performance.

Summary

Reverts the PhpDocInheritanceResolver rework from #4829 plus the commits that depend on its API or tests, so the slow ancestor-walking PHPDoc resolution comes back. With those reverts in place, CI should run phpbench against the bench file and the assertion in RegressionBench should fail (or at least flag a large regression versus baseline).

Local hyperfine numbers on tests/bench/data/phpdoc-inheritance-speedup.php (10-level chain × 3 interfaces/level × 10 methods, all overridden with PHPDocs):

• 2.1.x HEAD with Rework phpDoc inheritance to resolve through reflection instead of re-walking the hierarchy #4829 in place: ~20 s
• This branch (PR Rework phpDoc inheritance to resolve through reflection instead of re-walking the hierarchy #4829 reverted): ~110 s — same 380 errors emitted, ~6× slower.

Reverted commits (newest first)

• 47e49ed Fix #9733 (PHPDoc types from overridden function in aliased trait) — depends on the new resolver behaviour
• 685c2a9 ← fe750c5 Declare Memcached methods as impure
• e7ea21c ← 617a3a8 Rework phpDoc inheritance to resolve through reflection (the PR itself)
• 314f876 ← ba8fae8 Introduce @phpstan-all-methods-(im)pure (uses getResolvedPhpDoc()/areAllMethodsPure() added in Rework phpDoc inheritance to resolve through reflection instead of re-walking the hierarchy #4829)
• eeecd8d ← ca0e92c Regression tests for Rework phpDoc inheritance to resolve through reflection instead of re-walking the hierarchy #4829
• 5895e5f ← d584c6e No need to have generics in class constant-related messages (Rework phpDoc inheritance to resolve through reflection instead of re-walking the hierarchy #4829 cleanup)
• 8c5a39b ← 1eaa1e6 Do not require filename for reading PHPDocs (Rework phpDoc inheritance to resolve through reflection instead of re-walking the hierarchy #4829 cleanup)
• 03adc4d ← 1734058 Remove obsolete todo (Rework phpDoc inheritance to resolve through reflection instead of re-walking the hierarchy #4829 cleanup)
• 44e67ad ← c381cc0 Fix #14138 (depends on the reworked PhpClassReflectionExtension)

Test plan

• All 12027 unit tests pass on this branch (make tests, 1m36s)
• bin/phpstan analyse -l 8 tests/bench/data/phpdoc-inheritance-speedup.php reproduces the slow path locally (~110s vs ~20s on 2.1.x)
• CI phpbench step flags a regression on RegressionBench::benchRunAnalyse(phpdoc-inheritance-speedup.php) against the baseline committed in 196eba6

🤖 Generated with Claude Code

[ondrejmirtes]

Test confirmed