php-in-php: delete StringNaturalCompareJit LLVM — route strnatcmp/strnatcasecmp through NaturalCompareJitHelper PHP (#1492)

[PurHur]

Category

php-in-php · compile-pipeline / self-host #1492

Problem

lib/JIT/Builtin/StringNaturalCompareJit.php (~365 LOC) embeds LLVM natural-order compare for strnatcmp/strnatcasecmp. VM semantics already live in ext/standard/VmString.php (strnatcmp / strnatcasecmp). C runtime deleted in #5517; LLVM monolith remains and blocks PHP-in-PHP.

php-src reference

• php/php-src ext/standard/string.c — strnatcmp / strnatcasecmp

Repro

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php bin/vm.php -r "var_dump(strnatcmp(\"img10\", \"img2\"));"
php bin/jit.php -r "var_dump(strnatcmp(\"img10\", \"img2\"));"'

Scope

Path	Work
ext/standard/NaturalCompareJitHelper.php	SSOT bridge calling VmString::strnatcmp/strnatcasecmp
lib/JIT/Builtin/StringStrnatcmp.php / StringStrnatcasecmp.php	Thin ABI bridge (keep i8* signature for HashTable sort)
Delete	lib/JIT/Builtin/StringNaturalCompareJit.php

Done when

• JIT strnatcmp/strnatcasecmp match VM on repro
• PR cites LLVM lines removed from StringNaturalCompareJit.php
• vendor/bin/phpunit --filter NaturalCompare green
• make bootstrap-selfhost-vm-driver-execute-probe OK

[PurHur]

claim: PHP Runtime → PHP — batch (issues #13535, #13536)

[PurHur]

Merged via #13538.

LLVM shrink: deleted StringNaturalCompareJit.php (365 LOC); thin bridge in StringNaturalCompare.php (160 LOC).

Verification: NaturalCompareRuntimeShrinkTest 3/3; VM/JIT repro int(1); StrnatcmpJITTest OK; spine sync 3471/3471; bootstrap VM driver probe OK.