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revive/CHANGELOG.md
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xermicus a07968205b llvm-context: modularize compiler builtin functions (#234) 
- Add the revive runtime function interface to minimize boiler plate
code.
- Outline heavily repeated code into dedicated functions to bring down
code size.
- The code size tests builds optimized for size.
- Function attributes are passed as slices.

This significantly brings down the code size for all OpenZeppelin wizard
contracts (using all possible features) compiled against OpenZeppelin
`v5.0.0` with size optimizations.

|contract|| `-Oz` main | `-Oz` PR || `-O3` main | `-O3` PR |
|-|-|-|-|-|-|-|
|erc1155.sol||100K|67K||114K|147K|
|erc20.sol||120K|90K||160K|191K|
|erc721.sol||128K|101K||178K|214K|
|governor.sol||226K|165K||293K|349K|
|rwa.sol||116K|85K||154K|185K|
|stable.sol||116K|86K||155K|192K|

On the flip side this introduces a heavy penalty for cycle optimized
builds. Setting the no-inline attributes for cycle optimized builds
helps a lot but heavily penalizes runtime speed (LLVM does not yet
inline everything properly - to be investigated later on).

Next steps:
- Modularize more functions
- Refactor the YUL function arguments to use pointers instead of values
- Afterwards check if LLVM still has trouble inline-ing properly on O3
or set the no-inline attribute if it does not penalize runtime
performance too bad.
2025-02-25 16:47:01 +01:00

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Changelog

Unreleased

v0.1.0-dev.12

This is a development pre-release.

Supported polkadot-sdk rev: 21f6f0705e53c15aa2b8a5706b208200447774a9

Added

Changed

  • Improved code size: Large contracts compile to smaller code blobs using with size optimization.

Fixed

v0.1.0-dev.11

This is a development pre-release.

Supported polkadot-sdk rev: 274a781e8ca1a9432c7ec87593bd93214abbff50

Added

Changed

Fixed

  • A bug causing incorrect loads from the emulated EVM linear memory.
  • A missing integer truncate after switching to 64bit.

v0.1.0-dev.10

This is a development pre-release.

Supported polkadot-sdk rev: 274a781e8ca1a9432c7ec87593bd93214abbff50

Added

  • Support for the coinbase opcode.
  • The resolc web JS version.

Changed

  • Missing the --overwrite flag emits an error instead of a warning.
  • The resolc executable prints the help by default.
  • Removed support for legacy EVM assembly (EVMLA) translation.
  • integration: identify cached code blobs on source code to fix potential confusions.
  • Setting base, include or allow paths in emscripten is now a hard error.
  • Employ a heuristic to detect address.transfer and address.send calls. If detected, the re-entrant call flag is not set and 0 deposit limit is endowed.

Fixed

  • Solidity: Add the solc --libraries files to sources.
  • A data race in tests.
  • Fix broken pipe errors.
  • llvm-builder: Allow warnings.
  • solidity: Fix the custom compiler warning messages.

v0.1.0-dev.9

This is a development pre-release.

Added

Changed

  • Syscalls with more than 6 arguments now pack them into registers.

Fixed

  • Remove reloading of the resolc.js file (fix issue with relative path in web worker)

v0.1.0-dev.8

This is a development pre-release.

Added

  • The revive-llvm-builder crate with the revive-llvm helper utility for streamlined management of the LLVM framework dependency.
  • Initial support for running resolc in the browser.

Changed

  • Suported contracts runtime is polkadot-sdk git version d62a90c8c729acd98c7e9a5cab9803b8b211ffc5.
  • The minimum supported Rust version is 1.81.0.
  • Error out early instead of invoking solc with invalid base or include path flags.

Fixed

  • Decouple the LLVM target dependency from the LLVM host dependency.
  • Do not error out if no files and no errors were produced. This aligns resolc closer to solc.
  • Fixes input normalization in the Wasm version.

v0.1.0-dev.7

This is a development pre-release.

Added

  • Implement the GASPRICE opcode.
  • Implement the BASEFEE opcode.
  • Implement the GASLIMIT opcode.

Changed

  • The GAS opcode now returns the remaining ref_time.
  • Contracts can now be supplied call data input of arbitrary size.
  • Some syscalls now return the value in a register, slightly improving emitted contract code.
  • Calls forward maximum weight limits instead of 0, anticipating a change in polkadot-sdk where weight limits of 0 no longer interprets as uncapped limit.

Fixed

  • A linker bug which was preventing certain contracts from linking with the PVM linker.
  • JS: Fix encoding conversion from JS string (UTF-16) to UTF-8.
  • The git commit hash slug is always displayed in the version string.

v0.1.0-dev.6

This is a development pre-release.

Added

  • Implement the BLOCKHASH opcode.
  • Implement delegate calls.
  • Implement the GASPRICE opcode. Currently hard-coded to return 1.
  • The ELF shared object contract artifact is dumped into the debug output directory.
  • Initial support for emitting debug info (opt in via the -g flag)

Changed

  • resolc now emits 64bit PolkaVM blobs, reducing contract code size and execution time.
  • The RISC-V bit-manipulation target feature (zbb) is enabled.

Fixed

  • Compilation to Wasm (for usage in node and web browsers)

v0.1.0-dev.5

This is development pre-release.

Added

  • Implement the CODESIZE and EXTCODESIZE opcodes.

Changed

  • Include the full revive version in the contract metadata.

Fixed

v0.1.0-dev-4

This is development pre-release.

Added

  • Support the ORIGIN opcode.

Changed

  • Update polkavm to v0.14.0.
  • Enable the a, fast-unaligned-access and xtheadcondmov LLVM target features, decreasing the code size for some contracts.

Fixed

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