TypePHP 编译器
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47 lines
2.5 KiB
47 lines
2.5 KiB
# Dynamic call benchmark
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This benchmark compares direct calls with the runtime callable forms handled
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by PHPX. It deliberately separates stable call sites from alternating and
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megamorphic sites. TypePHP's function-call cache keeps one name inline and
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promotes polymorphic sites to a request-local table. Its method-call cache is
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monomorphic and disables itself after observing a different class or name.
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It also measures dynamic method names with a stable receiver, alternating
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method names, and a fixed method name on changing receiver classes. Those
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cases require a class-entry guard in addition to a callable-name guard.
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The `named_method_dynamic_receiver*` cases specifically exercise
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`Variant::call(const Variant &, ...)`: the PHP method name is fixed, while the
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receiver's concrete class is hidden behind an `object` value. The monomorphic
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cases measure the cacheable path with zero and one argument; the polymorphic
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case guards against optimizing one runtime class as though it were static.
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The `scoped_*` cases exercise private/protected dynamic calls that must resolve
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with the compiled method's lexical scope. They are kept separate because a
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scoped cache must guard both the target callable and its calling scope.
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The `static_*_dynamic` cases exercise direct `$class::method()`,
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`Class::$method()`, and `$class::$method()` syntax. These sites still construct
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their callable string dynamically, but now reuse the request-local resolution
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slot instead of repeating `zend_is_callable_ex()` on every iteration.
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The monomorphic string-call cases cover zero, one, two, and four positional
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arguments. This separates callable-cache lookup cost from argument
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materialization cost and protects the small stack-argument fast path.
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Run it from the repository root against a release PHP/PHPX build:
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```bash
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PHPX_HOME=../phpx PHP_BIN=/opt/php-8.5-nts/bin/php php benchmark/dynamic-call/run.php
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```
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The TypePHP binary is built with `-O3` and LTO. `PHP_BIN` selects both the Zend
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PHP baseline and, by default, the PHP executable used to run the compiler.
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`TPC_PHP_BIN` may override the latter, but the runner rejects different PHP
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versions, ZTS/debug modes, or integer widths. PHPX must also be a Release build
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for that same PHP ABI. Add `--skip-build` to reuse the binary or
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`--case=<name>` to measure one workload while profiling.
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Reported values are the best of five rounds after two warm-up rounds. The
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checksum must match between PHP and TypePHP; absolute timing is intentionally
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not used as a pass/fail condition.
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