Implement common subexpression elimination #550
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LucasSte
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LucasSte
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Nov 4, 2021
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The codegen test fails randomly, that's why the mac/windows tests have failed. |
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Please can you merge your commits into one commit, or more than one if it makes sense. It would be nice if commits are a set of logical changes. Also please ensure your commits have the correct |
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seanyoung
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| @@ -1254,6 +1257,10 @@ pub fn optimize_and_check_cfg( | |||
| if opt.dead_storage { | |||
| dead_storage::dead_storage(cfg, ns); | |||
| } | |||
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| if opt.common_subexpression_elimination && func_no.is_some() { | |||
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Any reason for func_no.some()?
A default constructor has no function number, so it is None in that case.
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A default constructor has no sub expression to be optimized.
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True, although that is worth a comment.
Signed-off-by: Lucas Steuernagel <[email protected]>
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Nov 12, 2021
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Added - On Solana, the accounts that were passed into the transactions are listed in the `tx.accounts` builtin. There is also a builtin struct `AccountInfo` - A new common subexpression elimination pass was added, thanks to [LucasSte](hyperledger-solang#550) - A graphviz dot file can be generated from the ast, using `--emit ast-dot` - Many improvements to the solidity parser, and the parser has been spun out in it's own create `solang-parser`. Changed - Solang now uses LLVM 13.0, based on the [Solana LLVM tree](https://github.com/solana-labs/llvm-project/) - The ast datastructure has been simplified. - Many bugfixes across the entire tree. Signed-off-by: Sean Young <[email protected]>
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Added - On Solana, the accounts that were passed into the transactions are listed in the `tx.accounts` builtin. There is also a builtin struct `AccountInfo` - A new common subexpression elimination pass was added, thanks to [LucasSte](hyperledger-solang#550) - A graphviz dot file can be generated from the ast, using `--emit ast-dot` - Many improvements to the solidity parser, and the parser has been spun out in it's own create `solang-parser`. Changed - Solang now uses LLVM 13.0, based on the [Solana LLVM tree](https://github.com/solana-labs/llvm-project/) - The ast datastructure has been simplified. - Many bugfixes across the entire tree. Signed-off-by: Sean Young <[email protected]>
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Added - On Solana, the accounts that were passed into the transactions are listed in the `tx.accounts` builtin. There is also a builtin struct `AccountInfo` - A new common subexpression elimination pass was added, thanks to [LucasSte](#550) - A graphviz dot file can be generated from the ast, using `--emit ast-dot` - Many improvements to the solidity parser, and the parser has been spun out in it's own create `solang-parser`. Changed - Solang now uses LLVM 13.0, based on the [Solana LLVM tree](https://github.com/solana-labs/llvm-project/) - The ast datastructure has been simplified. - Many bugfixes across the entire tree. Signed-off-by: Sean Young <[email protected]>
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This PR implements common subexpression elimination for the Solang compiler. It runs an available expression analysis during the first pass. Then, during a second pass we exchange common expressions by a temporaries.
This PR is the last milestone for the Linux Mentorship for the Hyperledger foundation. For more information about the project, please check the wiki.