php-in-php: GzStreamRuntime NestedJIT → JitVmHelperLink::ensureCompiled (#1492)

[PurHur]

Category

php-in-php · runtime-shrink (#1492, peer #22416 Bz2StreamRuntime / #22399 SysGetloadavgRuntime)

Problem

lib/JIT/Builtin/GzStreamRuntime.php still hand-rolls NestedJitCompileScope::run + parseAndCompile + new JIT() for GzStreamJitHelper.php. Peer runtimes route helper compile through JitVmHelperLink::ensureCompiled for consistent user-script env clearing, insert-block restore, and helper-runtime cache.

Keep NestedJitCompileScope::isActive() early-return in implement() (skip bridge emission during nested helper compile) — only delete the hand-rolled compile body.

php-src reference

• php/php-src ext/zlib/zlib.c — gzopen/gzread/gzwrite/… (semantics unchanged; compile-path only)

PHP implementation target

• lib/JIT/Builtin/GzStreamRuntime.php — replace ensureJitHelperCompiled body with JitVmHelperLink::ensureCompiled; use lookupCompiled; drop unused use PHPCompiler\\JIT
• test/unit/GzStreamRuntimeShrinkTest.php — guard JitVmHelperLink::ensureCompiled, no hand-rolled NestedJitCompileScope::run / parseAndCompile / new JIT(

Repro

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && vendor/bin/phpunit test/unit/GzStreamRuntimeShrinkTest.php'
make bootstrap-selfhost-vm-driver-execute-probe

Done when

• GzStreamRuntime uses JitVmHelperLink::ensureCompiled only for helper compile
• Shrink unit test green
• make bootstrap-selfhost-vm-driver-execute-probe green
• PR body cites lines removed

Refs #1492, #13420, #22416, #22399

[PurHur]

claim: PHP Runtime → PHP — starting this run (#22431 GzStreamRuntime NestedJIT → JitVmHelperLink::ensureCompiled).

Gates before claim:

Gate	Status	Symptom
bootstrap-inventory --check	green	OK 6432/6432
bootstrap-selfhost-link	pending	blocked on release-readiness lock
release-readiness --json	in progress	started this run

Peer of merged #22416 / #22418. Compile-path shrink only (no gen-0 / inventory).

[PurHur]

Merged via #22437

• GzStreamRuntime helper compile → JitVmHelperLink::ensureCompiled only
• Net −25 lines in lib/JIT/Builtin/GzStreamRuntime.php (no new C)
• Verification: GzStreamRuntimeShrinkTest OK; inventory OK 6432/6432; spine sync OK; bootstrap-selfhost-vm-driver-execute-probe OK

Squash: 84224cd