[PurHur]

Summary

• Delete StringPregMatchStandaloneLlvm.php (1272 LOC libpcre2 LLVM monolith) — all preg_* including preg_replace_callback now route through PregMatchRuntime + PHP helpers.
• Add PregJitHelper::replaceCallbackArgv() delegating to VmPregNative::pregReplaceCallbackJit() (pure-PHP match loop via VmPregPure).
• Thin LLVM callback trampoline: PregCallbackInvokeJitHelper::invoke (function-pointer ABI preserved for JitPregReplaceCallback shims).

php-src ref: ext/pcre/php_pcre.c — php_pcre_replace_impl callback form

LOC removed: lib/JIT/Builtin/StringPregMatchStandaloneLlvm.php deleted (−1272); net −1021 lines in PR.

Closes #13736

Test plan

# Issue repro — JIT preg_replace_callback
./script/docker-exec.sh php vendor/bin/phpunit --filter 'JITTest::testCases.*preg_replace_callback_jit'
# OK (1 test)

# Runtime-shrink guards
./script/docker-exec.sh php vendor/bin/phpunit test/unit/PregMatchRuntimeShrinkTest.php test/unit/RuntimeShrinkCloseoutTest.php test/unit/PregExpandRuntimeShrinkTest.php
# OK (7 tests, 92 assertions)

# VM preg_replace_callback smoke
./script/docker-exec.sh php vendor/bin/phpunit test/unit/PregReplaceCallbackBuiltinTest.php
# OK

# Bootstrap probe (spine touch)
make bootstrap-selfhost-vm-driver-execute-probe
# bootstrap-selfhost-vm-driver-execute-probe: OK

Made with Cursor