php-in-php: JIT BoundMethodCallableHelper — route [obj,method] FCC LLVM through VmCallable PHP not ~381-line helper (#1492)

[PurHur]

Category

php-in-php · language

Problem

lib/JIT/BoundMethodCallableHelper.php (~381 lines) resolves [object, 'method'] first-class callables and bound-method invokes entirely in LLVM. VM lowering for the same patterns lives in lib/VM/Callable.php / FromCallableHelper.php.

Language parity issues on FCC (#10168 instance method FCC, #3566 bound arrays) require duplicate fixes in JIT monolith + VM.

php-src reference

• php/php-src Zend/zend_compile.c — zend_compile_callable
• php/php-src Zend/zend_execute.c — ZEND_INIT_FCALL bound method path

Repro (compile-time divergence)

<?php
class C { public function m(): int { return 1; } }
$f = [new C, 'm'];
echo $f(), "\n";

Engine	[new C,'m']()
Zend	1
VM	verify current behavior
JIT	separate LLVM path in BoundMethodCallableHelper

Scope

Layer	Path
VM	lib/VM/Callable.php, ext/standard/call_user_func.php
JIT bridge	lib/JIT/FromCallableHelper.php → compiled PHP callable resolver
Shrink	lib/JIT/BoundMethodCallableHelper.php
Tests	test/compliance/cases/language/bound_method_callable.phpt

Done when

• JIT [obj,'method'] FCC calls VM PHP resolver; PHPT green
• BoundMethodCallableHelper.php reduced to thin trampoline (≤100 lines) or deleted
• Language: instance method first-class callable (expr)->m(...) — compile fails PHPTypes\Type::array() (Zend/zend_compile.c) #10168-class instance FCC benefits from shared core
• ./script/ci-fast.sh --filter bound_method_callable green

Related

• Language: instance method first-class callable (expr)->m(...) — compile fails PHPTypes\Type::array() (Zend/zend_compile.c) #10168 · php-in-php: JIT VariableFunctionCallHelper — route dynamic $fn() LLVM through VmCall PHP not ~387-line monolith (#1492) #10135 VariableFunctionCallHelper · Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492

[PurHur]

claim: PHP Runtime → PHP — batch (issues #10185)

[PurHur]

Merged via #11621.

Verification:

vendor/bin/phpunit test/unit/BoundMethodCallableHelperRuntimeShrinkTest.php  # OK (3 tests)
vendor/bin/phpunit test/unit/FromCallableRuntimeShrinkTest.php              # OK (2 tests)
php bin/jit.php -r "class C { public function m(): int { return 1; } } $f = [new C,'m']; echo $f();"  # 1

BoundMethodCallableHelper.php: 381 → 56 lines. SSOT: lib/VM/VmBoundMethodCallable.php.