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ethminer
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Pop optimization.

cl-refactor
Christian 10 years ago
parent
5afa06c7b5
commit
dd28c75e78
3 changed files with 154 additions and 132 deletions
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  1. 25
      libevmcore/Assembly.cpp
  2. 260
      libevmcore/Instruction.cpp
  3. 1
      libevmcore/Instruction.h

25
libevmcore/Assembly.cpp
View File

@ -231,6 +231,12 @@ inline bool matches(AssemblyItemsConstRef _a, AssemblyItemsConstRef _b)
return true;
}
inline bool popCountIncreased(AssemblyItemsConstRef _pre, AssemblyItems const& _post)
{
auto isPop = [](AssemblyItem const& _item) -> bool { return _item.match(AssemblyItem(Instruction::POP)); };
return count_if(begin(_post), end(_post), isPop) > count_if(begin(_pre), end(_pre), isPop);
}
struct OptimiserChannel: public LogChannel { static const char* name() { return "OPT"; } static const int verbosity = 12; };
#define copt dev::LogOutputStream<OptimiserChannel, true>()
@ -275,8 +281,23 @@ Assembly& Assembly::optimise(bool _enable)
rules.push_back({ { Push, Push, i.first }, [&](AssemblyItemsConstRef m) -> AssemblyItems { return { i.second(m[1].data(), m[0].data()) }; } });
rules.push_back({ { Push, i.first, Push, i.first }, [&](AssemblyItemsConstRef m) -> AssemblyItems { return { i.second(m[2].data(), m[0].data()), i.first }; } });
}
// jump to next instruction
rules.push_back({ { PushTag, Instruction::JUMP, Tag }, [&](AssemblyItemsConstRef m) -> AssemblyItems { if (m[0].m_data == m[2].m_data) return {m[2]}; else return m.toVector(); }});
// pop optimization, do not compute values that are popped again anyway
rules.push_back({ { AssemblyItem(UndefinedItem), Instruction::POP }, [](AssemblyItemsConstRef m) -> AssemblyItems
{
if (m[0].type() != Operation)
return m.toVector();
Instruction instr = Instruction(byte(m[0].data()));
if (Instruction::DUP1 <= instr && instr <= Instruction::DUP16)
return {};
InstructionInfo info = instructionInfo(instr);
if (info.sideEffects || info.additional != 0 || info.ret != 1)
return m.toVector();
return AssemblyItems(info.args, Instruction::POP);
} });
copt << *this;
unsigned total = 0;
@ -294,10 +315,10 @@ Assembly& Assembly::optimise(bool _enable)
for (auto const& r: rules)
{
auto vr = AssemblyItemsConstRef(&m_items).cropped(i, r.first.size());
if (matches(&r.first, vr))
if (matches(vr, &r.first))
{
auto rw = r.second(vr);
if (rw.size() < vr.size())
if (rw.size() < vr.size() || (rw.size() == vr.size() && popCountIncreased(vr, rw)))
{
copt << vr << "matches" << AssemblyItemsConstRef(&r.first) << "becomes...";
for (unsigned j = 0; j < vr.size(); ++j)

260
libevmcore/Instruction.cpp
View File

@ -162,136 +162,136 @@ const std::map<std::string, Instruction> dev::eth::c_instructions =
};
static const std::map<Instruction, InstructionInfo> c_instructionInfo =
{ // Add, Args, Ret
{ Instruction::STOP, { "STOP", 0, 0, 0 } },
{ Instruction::ADD, { "ADD", 0, 2, 1 } },
{ Instruction::SUB, { "SUB", 0, 2, 1 } },
{ Instruction::MUL, { "MUL", 0, 2, 1 } },
{ Instruction::DIV, { "DIV", 0, 2, 1 } },
{ Instruction::SDIV, { "SDIV", 0, 2, 1 } },
{ Instruction::MOD, { "MOD", 0, 2, 1 } },
{ Instruction::SMOD, { "SMOD", 0, 2, 1 } },
{ Instruction::EXP, { "EXP", 0, 2, 1 } },
{ Instruction::NOT, { "BNOT", 0, 1, 1 } },
{ Instruction::LT, { "LT", 0, 2, 1 } },
{ Instruction::GT, { "GT", 0, 2, 1 } },
{ Instruction::SLT, { "SLT", 0, 2, 1 } },
{ Instruction::SGT, { "SGT", 0, 2, 1 } },
{ Instruction::EQ, { "EQ", 0, 2, 1 } },
{ Instruction::ISZERO, { "NOT", 0, 1, 1 } },
{ Instruction::AND, { "AND", 0, 2, 1 } },
{ Instruction::OR, { "OR", 0, 2, 1 } },
{ Instruction::XOR, { "XOR", 0, 2, 1 } },
{ Instruction::BYTE, { "BYTE", 0, 2, 1 } },
{ Instruction::ADDMOD, { "ADDMOD", 0, 3, 1 } },
{ Instruction::MULMOD, { "MULMOD", 0, 3, 1 } },
{ Instruction::SIGNEXTEND, { "SIGNEXTEND", 0, 2, 1 } },
{ Instruction::SHA3, { "SHA3", 0, 2, 1 } },
{ Instruction::ADDRESS, { "ADDRESS", 0, 0, 1 } },
{ Instruction::BALANCE, { "BALANCE", 0, 1, 1 } },
{ Instruction::ORIGIN, { "ORIGIN", 0, 0, 1 } },
{ Instruction::CALLER, { "CALLER", 0, 0, 1 } },
{ Instruction::CALLVALUE, { "CALLVALUE", 0, 0, 1 } },
{ Instruction::CALLDATALOAD,{ "CALLDATALOAD", 0, 1, 1 } },
{ Instruction::CALLDATASIZE,{ "CALLDATASIZE", 0, 0, 1 } },
{ Instruction::CALLDATACOPY,{ "CALLDATACOPY", 0, 3, 0 } },
{ Instruction::CODESIZE, { "CODESIZE", 0, 0, 1 } },
{ Instruction::CODECOPY, { "CODECOPY", 0, 3, 0 } },
{ Instruction::GASPRICE, { "GASPRICE", 0, 0, 1 } },
{ Instruction::EXTCODESIZE, { "EXTCODESIZE", 0, 1, 1 } },
{ Instruction::EXTCODECOPY, { "EXTCODECOPY", 0, 4, 0 } },
{ Instruction::PREVHASH, { "PREVHASH", 0, 0, 1 } },
{ Instruction::COINBASE, { "COINBASE", 0, 0, 1 } },
{ Instruction::TIMESTAMP, { "TIMESTAMP", 0, 0, 1 } },
{ Instruction::NUMBER, { "NUMBER", 0, 0, 1 } },
{ Instruction::DIFFICULTY, { "DIFFICULTY", 0, 0, 1 } },
{ Instruction::GASLIMIT, { "GASLIMIT", 0, 0, 1 } },
{ Instruction::POP, { "POP", 0, 1, 0 } },
{ Instruction::MLOAD, { "MLOAD", 0, 1, 1 } },
{ Instruction::MSTORE, { "MSTORE", 0, 2, 0 } },
{ Instruction::MSTORE8, { "MSTORE8", 0, 2, 0 } },
{ Instruction::SLOAD, { "SLOAD", 0, 1, 1 } },
{ Instruction::SSTORE, { "SSTORE", 0, 2, 0 } },
{ Instruction::JUMP, { "JUMP", 0, 1, 0 } },
{ Instruction::JUMPI, { "JUMPI", 0, 2, 0 } },
{ Instruction::PC, { "PC", 0, 0, 1 } },
{ Instruction::MSIZE, { "MSIZE", 0, 0, 1 } },
{ Instruction::GAS, { "GAS", 0, 0, 1 } },
{ Instruction::JUMPDEST, { "JUMPDEST", 0, 1, 0 } },
{ Instruction::PUSH1, { "PUSH1", 1, 0, 1 } },
{ Instruction::PUSH2, { "PUSH2", 2, 0, 1 } },
{ Instruction::PUSH3, { "PUSH3", 3, 0, 1 } },
{ Instruction::PUSH4, { "PUSH4", 4, 0, 1 } },
{ Instruction::PUSH5, { "PUSH5", 5, 0, 1 } },
{ Instruction::PUSH6, { "PUSH6", 6, 0, 1 } },
{ Instruction::PUSH7, { "PUSH7", 7, 0, 1 } },
{ Instruction::PUSH8, { "PUSH8", 8, 0, 1 } },
{ Instruction::PUSH9, { "PUSH9", 9, 0, 1 } },
{ Instruction::PUSH10, { "PUSH10", 10, 0, 1 } },
{ Instruction::PUSH11, { "PUSH11", 11, 0, 1 } },
{ Instruction::PUSH12, { "PUSH12", 12, 0, 1 } },
{ Instruction::PUSH13, { "PUSH13", 13, 0, 1 } },
{ Instruction::PUSH14, { "PUSH14", 14, 0, 1 } },
{ Instruction::PUSH15, { "PUSH15", 15, 0, 1 } },
{ Instruction::PUSH16, { "PUSH16", 16, 0, 1 } },
{ Instruction::PUSH17, { "PUSH17", 17, 0, 1 } },
{ Instruction::PUSH18, { "PUSH18", 18, 0, 1 } },
{ Instruction::PUSH19, { "PUSH19", 19, 0, 1 } },
{ Instruction::PUSH20, { "PUSH20", 20, 0, 1 } },
{ Instruction::PUSH21, { "PUSH21", 21, 0, 1 } },
{ Instruction::PUSH22, { "PUSH22", 22, 0, 1 } },
{ Instruction::PUSH23, { "PUSH23", 23, 0, 1 } },
{ Instruction::PUSH24, { "PUSH24", 24, 0, 1 } },
{ Instruction::PUSH25, { "PUSH25", 25, 0, 1 } },
{ Instruction::PUSH26, { "PUSH26", 26, 0, 1 } },
{ Instruction::PUSH27, { "PUSH27", 27, 0, 1 } },
{ Instruction::PUSH28, { "PUSH28", 28, 0, 1 } },
{ Instruction::PUSH29, { "PUSH29", 29, 0, 1 } },
{ Instruction::PUSH30, { "PUSH30", 30, 0, 1 } },
{ Instruction::PUSH31, { "PUSH31", 31, 0, 1 } },
{ Instruction::PUSH32, { "PUSH32", 32, 0, 1 } },
{ Instruction::DUP1, { "DUP1", 0, 1, 2 } },
{ Instruction::DUP2, { "DUP2", 0, 2, 3 } },
{ Instruction::DUP3, { "DUP3", 0, 3, 4 } },
{ Instruction::DUP4, { "DUP4", 0, 4, 5 } },
{ Instruction::DUP5, { "DUP5", 0, 5, 6 } },
{ Instruction::DUP6, { "DUP6", 0, 6, 7 } },
{ Instruction::DUP7, { "DUP7", 0, 7, 8 } },
{ Instruction::DUP8, { "DUP8", 0, 8, 9 } },
{ Instruction::DUP9, { "DUP9", 0, 9, 10 } },
{ Instruction::DUP10, { "DUP10", 0, 10, 11 } },
{ Instruction::DUP11, { "DUP11", 0, 11, 12 } },
{ Instruction::DUP12, { "DUP12", 0, 12, 13 } },
{ Instruction::DUP13, { "DUP13", 0, 13, 14 } },
{ Instruction::DUP14, { "DUP14", 0, 14, 15 } },
{ Instruction::DUP15, { "DUP15", 0, 15, 16 } },
{ Instruction::DUP16, { "DUP16", 0, 16, 17 } },
{ Instruction::SWAP1, { "SWAP1", 0, 2, 2 } },
{ Instruction::SWAP2, { "SWAP2", 0, 3, 3 } },
{ Instruction::SWAP3, { "SWAP3", 0, 4, 4 } },
{ Instruction::SWAP4, { "SWAP4", 0, 5, 5 } },
{ Instruction::SWAP5, { "SWAP5", 0, 6, 6 } },
{ Instruction::SWAP6, { "SWAP6", 0, 7, 7 } },
{ Instruction::SWAP7, { "SWAP7", 0, 8, 8 } },
{ Instruction::SWAP8, { "SWAP8", 0, 9, 9 } },
{ Instruction::SWAP9, { "SWAP9", 0, 10, 10 } },
{ Instruction::SWAP10, { "SWAP10", 0, 11, 11 } },
{ Instruction::SWAP11, { "SWAP11", 0, 12, 12 } },
{ Instruction::SWAP12, { "SWAP12", 0, 13, 13 } },
{ Instruction::SWAP13, { "SWAP13", 0, 14, 14 } },
{ Instruction::SWAP14, { "SWAP14", 0, 15, 15 } },
{ Instruction::SWAP15, { "SWAP15", 0, 16, 16 } },
{ Instruction::SWAP16, { "SWAP16", 0, 17, 17 } },
{ Instruction::LOG0, { "LOG0", 0, 1, 0 } },
{ Instruction::LOG1, { "LOG1", 0, 2, 0 } },
{ Instruction::LOG2, { "LOG2", 0, 3, 0 } },
{ Instruction::LOG3, { "LOG3", 0, 4, 0 } },
{ Instruction::LOG4, { "LOG4", 0, 5, 0 } },
{ Instruction::CREATE, { "CREATE", 0, 3, 1 } },
{ Instruction::CALL, { "CALL", 0, 7, 1 } },
{ Instruction::CALLCODE, { "CALLCODE", 0, 7, 1 } },
{ Instruction::RETURN, { "RETURN", 0, 2, 0 } },
{ Instruction::SUICIDE, { "SUICIDE", 0, 1, 0} }
{ // Add, Args, Ret, SideEffects
{ Instruction::STOP, { "STOP", 0, 0, 0, true } },
{ Instruction::ADD, { "ADD", 0, 2, 1, false } },
{ Instruction::SUB, { "SUB", 0, 2, 1, false } },
{ Instruction::MUL, { "MUL", 0, 2, 1, false } },
{ Instruction::DIV, { "DIV", 0, 2, 1, false } },
{ Instruction::SDIV, { "SDIV", 0, 2, 1, false } },
{ Instruction::MOD, { "MOD", 0, 2, 1, false } },
{ Instruction::SMOD, { "SMOD", 0, 2, 1, false } },
{ Instruction::EXP, { "EXP", 0, 2, 1, false } },
{ Instruction::NOT, { "BNOT", 0, 1, 1, false } },
{ Instruction::LT, { "LT", 0, 2, 1, false } },
{ Instruction::GT, { "GT", 0, 2, 1, false } },
{ Instruction::SLT, { "SLT", 0, 2, 1, false } },
{ Instruction::SGT, { "SGT", 0, 2, 1, false } },
{ Instruction::EQ, { "EQ", 0, 2, 1, false } },
{ Instruction::ISZERO, { "NOT", 0, 1, 1, false } },
{ Instruction::AND, { "AND", 0, 2, 1, false } },
{ Instruction::OR, { "OR", 0, 2, 1, false } },
{ Instruction::XOR, { "XOR", 0, 2, 1, false } },
{ Instruction::BYTE, { "BYTE", 0, 2, 1, false } },
{ Instruction::ADDMOD, { "ADDMOD", 0, 3, 1, false } },
{ Instruction::MULMOD, { "MULMOD", 0, 3, 1, false } },
{ Instruction::SIGNEXTEND, { "SIGNEXTEND", 0, 2, 1, false } },
{ Instruction::SHA3, { "SHA3", 0, 2, 1, false } },
{ Instruction::ADDRESS, { "ADDRESS", 0, 0, 1, false } },
{ Instruction::BALANCE, { "BALANCE", 0, 1, 1, false } },
{ Instruction::ORIGIN, { "ORIGIN", 0, 0, 1, false } },
{ Instruction::CALLER, { "CALLER", 0, 0, 1, false } },
{ Instruction::CALLVALUE, { "CALLVALUE", 0, 0, 1, false } },
{ Instruction::CALLDATALOAD,{ "CALLDATALOAD", 0, 1, 1, false } },
{ Instruction::CALLDATASIZE,{ "CALLDATASIZE", 0, 0, 1, false } },
{ Instruction::CALLDATACOPY,{ "CALLDATACOPY", 0, 3, 0, true } },
{ Instruction::CODESIZE, { "CODESIZE", 0, 0, 1, false } },
{ Instruction::CODECOPY, { "CODECOPY", 0, 3, 0, true } },
{ Instruction::GASPRICE, { "GASPRICE", 0, 0, 1, false } },
{ Instruction::EXTCODESIZE, { "EXTCODESIZE", 0, 1, 1, false } },
{ Instruction::EXTCODECOPY, { "EXTCODECOPY", 0, 4, 0, true } },
{ Instruction::PREVHASH, { "PREVHASH", 0, 0, 1, false } },
{ Instruction::COINBASE, { "COINBASE", 0, 0, 1, false } },
{ Instruction::TIMESTAMP, { "TIMESTAMP", 0, 0, 1, false } },
{ Instruction::NUMBER, { "NUMBER", 0, 0, 1, false } },
{ Instruction::DIFFICULTY, { "DIFFICULTY", 0, 0, 1, false } },
{ Instruction::GASLIMIT, { "GASLIMIT", 0, 0, 1, false } },
{ Instruction::POP, { "POP", 0, 1, 0, false } },
{ Instruction::MLOAD, { "MLOAD", 0, 1, 1, false } },
{ Instruction::MSTORE, { "MSTORE", 0, 2, 0, true } },
{ Instruction::MSTORE8, { "MSTORE8", 0, 2, 0, true } },
{ Instruction::SLOAD, { "SLOAD", 0, 1, 1, false } },
{ Instruction::SSTORE, { "SSTORE", 0, 2, 0, true } },
{ Instruction::JUMP, { "JUMP", 0, 1, 0, true } },
{ Instruction::JUMPI, { "JUMPI", 0, 2, 0, true } },
{ Instruction::PC, { "PC", 0, 0, 1, false } },
{ Instruction::MSIZE, { "MSIZE", 0, 0, 1, false } },
{ Instruction::GAS, { "GAS", 0, 0, 1, false } },
{ Instruction::JUMPDEST, { "JUMPDEST", 0, 1, 0, true } },
{ Instruction::PUSH1, { "PUSH1", 1, 0, 1, false } },
{ Instruction::PUSH2, { "PUSH2", 2, 0, 1, false } },
{ Instruction::PUSH3, { "PUSH3", 3, 0, 1, false } },
{ Instruction::PUSH4, { "PUSH4", 4, 0, 1, false } },
{ Instruction::PUSH5, { "PUSH5", 5, 0, 1, false } },
{ Instruction::PUSH6, { "PUSH6", 6, 0, 1, false } },
{ Instruction::PUSH7, { "PUSH7", 7, 0, 1, false } },
{ Instruction::PUSH8, { "PUSH8", 8, 0, 1, false } },
{ Instruction::PUSH9, { "PUSH9", 9, 0, 1, false } },
{ Instruction::PUSH10, { "PUSH10", 10, 0, 1, false } },
{ Instruction::PUSH11, { "PUSH11", 11, 0, 1, false } },
{ Instruction::PUSH12, { "PUSH12", 12, 0, 1, false } },
{ Instruction::PUSH13, { "PUSH13", 13, 0, 1, false } },
{ Instruction::PUSH14, { "PUSH14", 14, 0, 1, false } },
{ Instruction::PUSH15, { "PUSH15", 15, 0, 1, false } },
{ Instruction::PUSH16, { "PUSH16", 16, 0, 1, false } },
{ Instruction::PUSH17, { "PUSH17", 17, 0, 1, false } },
{ Instruction::PUSH18, { "PUSH18", 18, 0, 1, false } },
{ Instruction::PUSH19, { "PUSH19", 19, 0, 1, false } },
{ Instruction::PUSH20, { "PUSH20", 20, 0, 1, false } },
{ Instruction::PUSH21, { "PUSH21", 21, 0, 1, false } },
{ Instruction::PUSH22, { "PUSH22", 22, 0, 1, false } },
{ Instruction::PUSH23, { "PUSH23", 23, 0, 1, false } },
{ Instruction::PUSH24, { "PUSH24", 24, 0, 1, false } },
{ Instruction::PUSH25, { "PUSH25", 25, 0, 1, false } },
{ Instruction::PUSH26, { "PUSH26", 26, 0, 1, false } },
{ Instruction::PUSH27, { "PUSH27", 27, 0, 1, false } },
{ Instruction::PUSH28, { "PUSH28", 28, 0, 1, false } },
{ Instruction::PUSH29, { "PUSH29", 29, 0, 1, false } },
{ Instruction::PUSH30, { "PUSH30", 30, 0, 1, false } },
{ Instruction::PUSH31, { "PUSH31", 31, 0, 1, false } },
{ Instruction::PUSH32, { "PUSH32", 32, 0, 1, false } },
{ Instruction::DUP1, { "DUP1", 0, 1, 2, false } },
{ Instruction::DUP2, { "DUP2", 0, 2, 3, false } },
{ Instruction::DUP3, { "DUP3", 0, 3, 4, false } },
{ Instruction::DUP4, { "DUP4", 0, 4, 5, false } },
{ Instruction::DUP5, { "DUP5", 0, 5, 6, false } },
{ Instruction::DUP6, { "DUP6", 0, 6, 7, false } },
{ Instruction::DUP7, { "DUP7", 0, 7, 8, false } },
{ Instruction::DUP8, { "DUP8", 0, 8, 9, false } },
{ Instruction::DUP9, { "DUP9", 0, 9, 10, false } },
{ Instruction::DUP10, { "DUP10", 0, 10, 11, false } },
{ Instruction::DUP11, { "DUP11", 0, 11, 12, false } },
{ Instruction::DUP12, { "DUP12", 0, 12, 13, false } },
{ Instruction::DUP13, { "DUP13", 0, 13, 14, false } },
{ Instruction::DUP14, { "DUP14", 0, 14, 15, false } },
{ Instruction::DUP15, { "DUP15", 0, 15, 16, false } },
{ Instruction::DUP16, { "DUP16", 0, 16, 17, false } },
{ Instruction::SWAP1, { "SWAP1", 0, 2, 2, false } },
{ Instruction::SWAP2, { "SWAP2", 0, 3, 3, false } },
{ Instruction::SWAP3, { "SWAP3", 0, 4, 4, false } },
{ Instruction::SWAP4, { "SWAP4", 0, 5, 5, false } },
{ Instruction::SWAP5, { "SWAP5", 0, 6, 6, false } },
{ Instruction::SWAP6, { "SWAP6", 0, 7, 7, false } },
{ Instruction::SWAP7, { "SWAP7", 0, 8, 8, false } },
{ Instruction::SWAP8, { "SWAP8", 0, 9, 9, false } },
{ Instruction::SWAP9, { "SWAP9", 0, 10, 10, false } },
{ Instruction::SWAP10, { "SWAP10", 0, 11, 11, false } },
{ Instruction::SWAP11, { "SWAP11", 0, 12, 12, false } },
{ Instruction::SWAP12, { "SWAP12", 0, 13, 13, false } },
{ Instruction::SWAP13, { "SWAP13", 0, 14, 14, false } },
{ Instruction::SWAP14, { "SWAP14", 0, 15, 15, false } },
{ Instruction::SWAP15, { "SWAP15", 0, 16, 16, false } },
{ Instruction::SWAP16, { "SWAP16", 0, 17, 17, false } },
{ Instruction::LOG0, { "LOG0", 0, 1, 0, true } },
{ Instruction::LOG1, { "LOG1", 0, 2, 0, true } },
{ Instruction::LOG2, { "LOG2", 0, 3, 0, true } },
{ Instruction::LOG3, { "LOG3", 0, 4, 0, true } },
{ Instruction::LOG4, { "LOG4", 0, 5, 0, true } },
{ Instruction::CREATE, { "CREATE", 0, 3, 1, true } },
{ Instruction::CALL, { "CALL", 0, 7, 1, true } },
{ Instruction::CALLCODE, { "CALLCODE", 0, 7, 1, true } },
{ Instruction::RETURN, { "RETURN", 0, 2, 0, true } },
{ Instruction::SUICIDE, { "SUICIDE", 0, 1, 0, true } }
};
string dev::eth::disassemble(bytes const& _mem)

1
libevmcore/Instruction.h
View File

@ -204,6 +204,7 @@ struct InstructionInfo
int additional; ///< Additional items required in memory for this instructions (only for PUSH).
int args; ///< Number of items required on the stack for this instruction (and, for the purposes of ret, the number taken from the stack).
int ret; ///< Number of items placed (back) on the stack by this instruction, assuming args items were removed.
bool sideEffects; ///< false if the only effect on the execution environment (apart from gas usage) is a change to a topmost segment of the stack
};
/// Information on all the instructions.

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