27 lines
947 B
Markdown
27 lines
947 B
Markdown
Optimization Levels
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==================
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{{#include ../../links.md}}
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There are three levels of optimization: `None`, `Simple` and `Full`.
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* `None` is obvious - no optimization on the AST is performed.
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* `Simple` (default) performs only relatively _safe_ optimizations without causing side-effects
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(i.e. it only relies on static analysis and [built-in operators] for constant [standard types],
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and will not perform any external function calls).
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* `Full` is _much_ more aggressive, _including_ calling external functions on constant arguments to determine their result.
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One benefit to this is that many more optimization opportunities arise, especially with regards to comparison operators.
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Set Optimization Level
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---------------------
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An [`Engine`]'s optimization level is set via a call to `Engine::set_optimization_level`:
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```rust
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// Turn on aggressive optimizations
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engine.set_optimization_level(rhai::OptimizationLevel::Full);
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```
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