return g_ir_builder.CreateUIToFP( tmp, llvm::Type::getDoubleTy(g_llvm_context), "booltmp"); } case '+': return g_ir_builder.CreateFAdd(lhs, rhs, "addtmp"); case '-': return g_ir_builder.CreateFSub(lhs, rhs, "subtmp"); case '*': return g_ir_builder.CreateFMul(lhs, rhs...
return g_ir_builder.CreateUIToFP( tmp, llvm::Type::getDoubleTy(g_llvm_context), "booltmp"); } case '+': return g_ir_builder.CreateFAdd(lhs, rhs, "addtmp"); case '-': return g_ir_builder.CreateFSub(lhs, rhs, "subtmp"); case '*': return g_ir_builder.CreateFMul(lhs, rhs...
return builder->CreateMul(L, R, "multmp"); case Token::DIVIDE: return builder->CreateSDiv(L, R, "divtmp"); } return nullptr; } 基于运算符llvm::builder发出相应的 IR 指令,“tmp”参数由 LLVM 在内部用于表示临时值。 RPG source code C EVAL COUNT = A + 1 LLVM IR %1 = load i64, ...
builder.SetInsertPoint(bEntry);// 设置当前Builder的操作对象 // b局部变量:alloca指令创建局部变量b,接口为AllocaInst * llvm::IRBuilderBase::CreateAlloca(Type * Ty, Value * ArraySize = nullptr, const Twine & Name = "") Value *bPtr = builder.CreateAlloca(builder.getInt32Ty(), nullptr,"b....
#include "llvm/IR/IRBuilder.h" #include "llvm/IR/Module.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/InitLLVM.h" #include "llvm/Support/TargetSelect.h" #include "llvm/Support/raw_ostream.h" using namespace llvm; ...
// llvm block用于定义control flow graph, 由于我们暂不实现control flow, 创建// 一个单独的block即可llvm::BasicBlock*block=llvm::BasicBlock::Create(g_llvm_context,"entry",func);g_ir_builder.SetInsertPoint(block);// 将函数参数注册到g_named_values中,让VariableExprAST可以codegeng_named_values....
IRBuilder<> IRB(&(*IP)); Value *ptr = IRB.CreateBitCast(IRB.CreateGEP(arg, ConstantInt::get(Int64Ty, 0)), IntNTy->getPointerTo()); Value *hex = IRB.CreateLoad(ptr); hex = IRB.CreateZExt(hex, Int64Ty); for (auto &I : *IP->getParent()) { if (dyn_cast<llvm::ReturnInst>(...
我们IR生成代码:(代码中同样做了详细解释) void customWhileIR(){LLVMContext context;Module*module=newModule("haoyuWhile",context);IRBuilder<>builder(context);//创建void函数FunctionType*funcType=FunctionType::get(builder.getVoidTy(),false);Function*customFunc=Function::Create(funcType,Function::Externa...
(); llvm::Module *module = new llvm::Module("top", context); llvm::IRBuilder<> builder(context); llvm::FunctionType *funcType = llvm::FunctionType::get(builder.getInt32Ty(), false); llvm::Function *mainFunc = llvm::Function::Create(funcType, llvm::Function::ExternalLinkage, "main"...
class CodeGenContext{ private: std::vector<CodeGenBlock*> blockStack; public: LLVMContext llvmContext; IRBuilder<> builder; unique_ptr<Module> theModule; SymTable globalVars; TypeSystem typeSystem; ... // functions } 这样一来在进行类型检查时,我们便可以通过让CodeGenContext从栈顶开始�遍历每个bl...