0.1.1 (2020-07-24)

Dependencies:

• Update llvm from 8 to 10
• Update pre-built docker images

0.1.0 (2020-04-29)

Language Features:

• Solidity:
  • Support abi.encode and abi.encodePacked. (including array type) [Experimental]

Compiler Features:

• Support optimization options:
  • --O0: Disable optimizations
  • --O1: Enable trivial optimizations
  • --O2: Enable default optimizations
  • --O3: Enable expensive optimizations
  • --Os: Enable default optimizations for size
  • --Oz: Enable expensive optimizations for size
• Support EVM backend via EVM_LLVM 8
  • In current stage, SOLL will generate LLVM IR for EVM backend target only.
  • Developers should use generated LLVM IR files and compile them with llc from EVM_LLVM 8 to get EVM bytecodes.
  • Disable integer lowering when using EVM backend. Only allow 256 bits integer type.

Bugfixes:

• Fix bad APInt trunc in parser
• Fix bad array size and index trunc in codegen
• Fix syntax error on revert() and array access

0.0.6 (2020-03-31)

Language Features:

• Solidity:
  • Support abi.encode and abi.encodePacked. (excluding array type)
  • Support fallback keyword. (solidity spec >= 0.6.0)
  • Support struct decleration. (with limited members’ types)
• Yul:
  • Support tuple usage.
    • return, declaration, assignment
  • Support built-in functions.
    • return, revert
    • log0, log1, log2, log3, log4
    • blockcoinbase, blockdifficulty, blockgaslimit
    • blocknumber, blocktimestamp, txorigin, txgasprice, gasleft
    • caller, callvalue, calldatasize
    • codecopy, datacopy
    • datasize, dataoffset (limitation: couldn't be used apply on object itself)
  • Support leave statement. (Yul spec >= 0.6.0)
  • Support generate and deploy ewasm from Yul file. (Yul file was compiled from solc)

Compiler Features:

• Diagnostic Tool:
  • Throw error messages for unimplemented features:
    • Redefine constructor or fallback function.
  • Add color on/off option.
• Add command-line action options for distinguishing generate ewasm could be deployed on-chain or normal case.
  • -deploy=Chain: Ewasm VM (Hera) not support keccak256 yet, so for workaround use sha256 instead. (Default)
  • -deploy=Normal: Normal behavior.
• Add command-line action options for generating object files.
  • -action=EmitAssembly: Emit a .s file.
  • -action=EmitBC: Emit a .bc file.
  • -action=EmitLLVM: Emit a .bc file.
  • -action=EmitLLVMOnly: Generate LLVM IR, but do not emit anything.
  • -action=EmitCodeGenOnly: Generate machine code, but don't emit anything.
  • -action=EmitObj: Emit a .o file.
  • -action=EmitWasm: Emit a .wasm file.
• Add command-line action options for misc.
  • -action=ParseSyntaxOnly: Parse and perform semantic analysis.

Bugfixes:

• Add ImplicitCastExpr on return statement.
• Fix mismatch EEI functions blockhash.
• Keep full event signature as topic 0 field when emitting event.
• Fix built-in function minor issues:
  • iszero, shl, shr, sar
• Remove unexpected message when soll -action=EmitFuncSig.
• Remove redundant slot access when load/store storage with bytes and string.

0.0.5 (2020-01-18)

Language Features:

• Common:
  • Support big number literal (> uint64)
• Solidity:
  • Support built-in units:
    • ether, finney, szabo, wei
    • weeks, days, hours, minutes, seconds
  • Replace keccak256 and sha256 with sha3 for EVM backend.
  • Implement exponentiation operator.
  • Support this to access member functions in the same contract.
• Yul:
  • Support switch statement.
  • Support function definition.
  • Implement scoping logic and delay identifier lookup
  • Support alias operators:
    • slt -> lts256
    • sgt -> gts256
    • sdiv -> divs256
  • Handle memory relative mechanism:
    • Use global variable to record memory size.
    • Use __heap_size as memory offset.
    • Add helper functions to increase memory usage.
  • Implement built-in functions:
    • calldataload
    • mload, mstore, mstore8, msize
    • exp
• Diagnostic Tool:
  • Throw error messages for unimplemented features:
    • Constructor doesn’t support parameters. SOLL only accept constructor without any parameters.
    • SOLL doesn’t support array.push, array.pop
  • Terminate codegen when error occurs

Bugfixes:

• Hex number literal:
  • Support hex number literal (0x...)
• <address>.balance should return uint256 instead of uint128.
• Reduce some useless endian transformation.
• Fix mismatch EEI functions:
  • <address>.balance, <address>.send, blockhash

0.0.4 (2019-12-25)

Language Features:

• Support limited Yul language. See details here.
  • Basic arithmetical, compare, sstore and sload built-in functions.
  • For loop, If, Var declare and Assignment statements.

Compiler Features:

• Add command-line version option for checking current SOLL version.
  • -version
• Add command-line language options for supporting Yul input file.
  • -lang=Sol: Input file is written in Solidity. (Default)
  • -lang=Yul: Input file is written in Yul.
• Add testing framework for unittest and regrasion test.
• Integrate Solidity compilation test and libyul test from ethereum/solidity.

Regression Test:

• Solidity test suite (Total 66 tests from compilationTests):

Expected Passes    : 10 # Solidity has 66 testing contract, and SOLL can pass 10.
Unsupported Tests  : 56 # Unimplemented by SOLL
Pass Rate: 15%

• Yul test suite (Total 499 tests from libyul):

Expected Passes    : 63  # libyul has 499 testing contracts, and SOLL can pass 63.
Unsupported Tests  : 436 # Unimplemented by SOLL
Pass Rate: 13%

0.0.3 (2019-11-19)

Language Features:

• Support partial builtin global variable
  • msg.sender, msg.value, msg.data.
  • tx.gasprice, tx.origin.
  • block.coinbase, block.difficulty, block.gaslimit, block.number, block.timestamp.
• Support Constructor, Fallback function.
• Support Event mechanism.
• Support Payable mechanism.
• Support dynamic type. (Bytes/String)

Compiler Features:

• Be able to generate deployable Ewasm files.
• Support diagnostic message.
• Add command-line options for generating metadata of Solidity contracts.
  • EmitABI: Generate ABI
  • EmitFuncSig: Generate function signatures
• Support EVM1 bytecode target. (Depends on EVM_LLVM)

Bugfixes:

• Fix an endian issue that happened when someone calls the EEI function from wasm.
• Fix a parsing issue on array type.

0.0.3-pre

This is a prerelease version of SOLL 0.0.3.

Backend

• Support EVM target via EVM_LLVM project.
• Replace EEI runtime with EVM builtin intrinsic functions.
• Provide two phases compilation to generate Ewasm runtime and deployer bytecode.

Language Feature

• Handle event declarations, emit event.
• Handle constructor declaration