1 //===--- Function.h - Bytecode function for the VM --------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "Function.h" 10 #include "Program.h" 11 #include "Opcode.h" 12 #include "clang/AST/Decl.h" 13 #include "clang/AST/DeclCXX.h" 14 15 using namespace clang; 16 using namespace clang::interp; 17 18 Function::Function(Program &P, const FunctionDecl *F, unsigned ArgSize, 19 llvm::SmallVector<PrimType, 8> &&ParamTypes, 20 llvm::DenseMap<unsigned, ParamDescriptor> &&Params, 21 bool HasThisPointer, bool HasRVO) 22 : P(P), Loc(F->getBeginLoc()), F(F), ArgSize(ArgSize), 23 ParamTypes(std::move(ParamTypes)), Params(std::move(Params)), 24 HasThisPointer(HasThisPointer), HasRVO(HasRVO) {} 25 26 Function::ParamDescriptor Function::getParamDescriptor(unsigned Offset) const { 27 auto It = Params.find(Offset); 28 assert(It != Params.end() && "Invalid parameter offset"); 29 return It->second; 30 } 31 32 SourceInfo Function::getSource(CodePtr PC) const { 33 assert(PC >= getCodeBegin() && "PC does not belong to this function"); 34 assert(PC <= getCodeEnd() && "PC Does not belong to this function"); 35 unsigned Offset = PC - getCodeBegin(); 36 using Elem = std::pair<unsigned, SourceInfo>; 37 auto It = llvm::lower_bound(SrcMap, Elem{Offset, {}}, llvm::less_first()); 38 assert(It != SrcMap.end()); 39 return It->second; 40 } 41 42 bool Function::isVirtual() const { 43 if (auto *M = dyn_cast<CXXMethodDecl>(F)) 44 return M->isVirtual(); 45 return false; 46 } 47