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Eagerly evaluate built-in operators for OptimizationLevel::Simple.

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Stephen Chung
2020-10-05 10:27:31 +08:00
parent b91a073596
commit 0d0affd5e9
11 changed files with 182 additions and 104 deletions
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5
doc/src/engine/optimize/optimize-levels.md
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@@ -8,9 +8,10 @@ There are three levels of optimization: `None`, `Simple` and `Full`.
* `None` is obvious - no optimization on the AST is performed.
* `Simple` (default) performs only relatively _safe_ optimizations without causing side-effects
(i.e. it only relies on static analysis and will not actually perform any function calls).
(i.e. it only relies on static analysis and [built-in operators] for constant [standard types],
and will not perform any external function calls).
* `Full` is _much_ more aggressive, _including_ running functions on constant arguments to determine their result.
* `Full` is _much_ more aggressive, _including_ calling external functions on constant arguments to determine their result.
One benefit to this is that many more optimization opportunities arise, especially with regards to comparison operators.