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MULMOD/ADDMOD implemented in separate functions [FIXES #80566276]

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This commit is contained in:
artur-zawlocki 2014-10-29 10:29:34 +00:00
parent 25ccd49acb
commit cecf567426
3 changed files with 55 additions and 10 deletions
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53
libevmjit/Arith256.cpp
View file

@ -21,15 +21,20 @@ Arith256::Arith256(llvm::IRBuilder<>& _builder) :
m_result = m_builder.CreateAlloca(Type::i256, nullptr, "arith.result");
m_arg1 = m_builder.CreateAlloca(Type::i256, nullptr, "arith.arg1");
m_arg2 = m_builder.CreateAlloca(Type::i256, nullptr, "arith.arg2");
m_arg3 = m_builder.CreateAlloca(Type::i256, nullptr, "arith.arg3");
using Linkage = GlobalValue::LinkageTypes;
llvm::Type* argTypes[] = {Type::WordPtr, Type::WordPtr, Type::WordPtr};
m_mul = Function::Create(FunctionType::get(Type::Void, argTypes, false), Linkage::ExternalLinkage, "arith_mul", getModule());
m_div = Function::Create(FunctionType::get(Type::Void, argTypes, false), Linkage::ExternalLinkage, "arith_div", getModule());
m_mod = Function::Create(FunctionType::get(Type::Void, argTypes, false), Linkage::ExternalLinkage, "arith_mod", getModule());
m_sdiv = Function::Create(FunctionType::get(Type::Void, argTypes, false), Linkage::ExternalLinkage, "arith_sdiv", getModule());
m_smod = Function::Create(FunctionType::get(Type::Void, argTypes, false), Linkage::ExternalLinkage, "arith_smod", getModule());
llvm::Type* arg2Types[] = {Type::WordPtr, Type::WordPtr, Type::WordPtr};
llvm::Type* arg3Types[] = {Type::WordPtr, Type::WordPtr, Type::WordPtr, Type::WordPtr};
m_mul = Function::Create(FunctionType::get(Type::Void, arg2Types, false), Linkage::ExternalLinkage, "arith_mul", getModule());
m_div = Function::Create(FunctionType::get(Type::Void, arg2Types, false), Linkage::ExternalLinkage, "arith_div", getModule());
m_mod = Function::Create(FunctionType::get(Type::Void, arg2Types, false), Linkage::ExternalLinkage, "arith_mod", getModule());
m_sdiv = Function::Create(FunctionType::get(Type::Void, arg2Types, false), Linkage::ExternalLinkage, "arith_sdiv", getModule());
m_smod = Function::Create(FunctionType::get(Type::Void, arg2Types, false), Linkage::ExternalLinkage, "arith_smod", getModule());
m_addmod = Function::Create(FunctionType::get(Type::Void, arg3Types, false), Linkage::ExternalLinkage, "arith_addmod", getModule());
m_mulmod = Function::Create(FunctionType::get(Type::Void, arg3Types, false), Linkage::ExternalLinkage, "arith_mulmod", getModule());
}
Arith256::~Arith256()
@ -43,6 +48,15 @@ llvm::Value* Arith256::binaryOp(llvm::Function* _op, llvm::Value* _arg1, llvm::V
return m_builder.CreateLoad(m_result);
}
llvm::Value* Arith256::ternaryOp(llvm::Function* _op, llvm::Value* _arg1, llvm::Value* _arg2, llvm::Value* _arg3)
{
m_builder.CreateStore(_arg1, m_arg1);
m_builder.CreateStore(_arg2, m_arg2);
m_builder.CreateStore(_arg3, m_arg3);
m_builder.CreateCall4(_op, m_arg1, m_arg2, m_arg3, m_result);
return m_builder.CreateLoad(m_result);
}
llvm::Value* Arith256::mul(llvm::Value* _arg1, llvm::Value* _arg2)
{
return binaryOp(m_mul, _arg1, _arg2);
@ -68,6 +82,17 @@ llvm::Value* Arith256::smod(llvm::Value* _arg1, llvm::Value* _arg2)
return binaryOp(m_smod, _arg1, _arg2);
}
llvm::Value* Arith256::addmod(llvm::Value* _arg1, llvm::Value* _arg2, llvm::Value* _arg3)
{
return ternaryOp(m_addmod, _arg1, _arg2, _arg3);
}
llvm::Value* Arith256::mulmod(llvm::Value* _arg1, llvm::Value* _arg2, llvm::Value* _arg3)
{
return ternaryOp(m_mulmod, _arg1, _arg2, _arg3);
}
}
}
}
@ -113,6 +138,22 @@ EXPORT void arith_smod(i256* _arg1, i256* _arg2, i256* _result)
*_result = eth2llvm(arg2 == 0 ? arg2 : dev::s2u(dev::u2s(arg1) % dev::u2s(arg2)));
}
EXPORT void arith_mulmod(i256* _arg1, i256* _arg2, i256* _arg3, i256* _result)
{
dev::u256 arg1 = llvm2eth(*_arg1);
dev::u256 arg2 = llvm2eth(*_arg2);
dev::u256 arg3 = llvm2eth(*_arg3);
*_result = eth2llvm(dev::u256((dev::bigint(arg1) * dev::bigint(arg2)) % arg3));
}
EXPORT void arith_addmod(i256* _arg1, i256* _arg2, i256* _arg3, i256* _result)
{
dev::u256 arg1 = llvm2eth(*_arg1);
dev::u256 arg2 = llvm2eth(*_arg2);
dev::u256 arg3 = llvm2eth(*_arg3);
*_result = eth2llvm(dev::u256((dev::bigint(arg1) + dev::bigint(arg2)) % arg3));
}
}

6
libevmjit/Arith256.h
View file

@ -20,18 +20,24 @@ public:
llvm::Value* mod(llvm::Value* _arg1, llvm::Value* _arg2);
llvm::Value* sdiv(llvm::Value* _arg1, llvm::Value* _arg2);
llvm::Value* smod(llvm::Value* _arg1, llvm::Value* _arg2);
llvm::Value* mulmod(llvm::Value* _arg1, llvm::Value* _arg2, llvm::Value* _arg3);
llvm::Value* addmod(llvm::Value* _arg1, llvm::Value* _arg2, llvm::Value* _arg3);
private:
llvm::Value* binaryOp(llvm::Function* _op, llvm::Value* _arg1, llvm::Value* _arg2);
llvm::Value* ternaryOp(llvm::Function* _op, llvm::Value* _arg1, llvm::Value* _arg2, llvm::Value* _arg3);
llvm::Function* m_mul;
llvm::Function* m_div;
llvm::Function* m_mod;
llvm::Function* m_sdiv;
llvm::Function* m_smod;
llvm::Function* m_mulmod;
llvm::Function* m_addmod;
llvm::Value* m_arg1;
llvm::Value* m_arg2;
llvm::Value* m_arg3;
llvm::Value* m_result;
};

6
libevmjit/Compiler.cpp
View file

@ -488,9 +488,8 @@ void Compiler::compileBasicBlock(BasicBlock& basicBlock, bytesConstRef bytecode,
{
auto lhs = stack.pop();
auto rhs = stack.pop();
auto sum = m_builder.CreateAdd(lhs, rhs);
auto mod = stack.pop();
auto res = arith.mod(sum, mod);
auto res = arith.addmod(lhs, rhs, mod);
stack.push(res);
break;
}
@ -499,9 +498,8 @@ void Compiler::compileBasicBlock(BasicBlock& basicBlock, bytesConstRef bytecode,
{
auto lhs = stack.pop();
auto rhs = stack.pop();
auto prod = m_builder.CreateMul(lhs, rhs);
auto mod = stack.pop();
auto res = arith.mod(prod, mod);
auto res = arith.mulmod(lhs, rhs, mod);
stack.push(res);
break;
}