boa/src at d119934f983fb8c0b72edc6a803a7565e399d75e - boa

Rust编写的JavaScript引擎，该项目是一个试验性质的项目。

Haled Odat 6c438b5516 Implement constant folding optimization (#2679 ) This PR implements an optimizer, It currently implements the [constant folding optimization][cfo]. this optimization is responsible for "folding"/evaluating constant expressions. For example: ```js let x = ((1 + 2 + -4) * 8) << 4 ``` Generates the following instruction(s) (`cargo run -- -t`): ``` 000000 0000 PushOne 000001 0001 PushInt8 2 000003 0002 Add 000004 0003 PushInt8 4 000006 0004 Neg 000007 0005 Add 000008 0006 PushInt8 8 000010 0007 Mul 000011 0008 PushInt8 4 000013 0009 ShiftLeft 000014 0010 DefInitLet 0000: 'x' ``` With constant folding it generates the following instruction(s) (`cargo run -- -t -O`): ``` 000000 0000 PushInt8 -128 000002 0001 DefInitLet 0000: 'x' ``` It changes the following: - Implement ~~WIP~~ constant folding optimization, ~~only works with integers for now~~ - Add `--optimize, -O` flag to boa_cli - Add `--optimizer-statistics` flag to boa_cli for optimizer statistics - Add `--optimize, -O` flag to boa_tester After I finish with this, will try to implement other optimizations :) [cfo]: https://en.wikipedia.org/wiki/Constant_folding		2 years ago
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exec	Implement constant folding optimization (#2679 )	2 years ago
edition.rs	Fix deserialization of `SpecEdition` (#2762 )	2 years ago
main.rs	Implement constant folding optimization (#2679 )	2 years ago
read.rs	Bump Test262 and add new features (#2729 )	2 years ago
results.rs	Improve tester display for multiple editions (#2720 )	2 years ago