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 : P(P), Loc(F->getBeginLoc()), F(F), ArgSize(ArgSize), 22 ParamTypes(std::move(ParamTypes)), Params(std::move(Params)) {} 23 24 CodePtr Function::getCodeBegin() const { return Code.data(); } 25 26 CodePtr Function::getCodeEnd() const { return Code.data() + Code.size(); } 27 28 Function::ParamDescriptor Function::getParamDescriptor(unsigned Offset) const { 29 auto It = Params.find(Offset); 30 assert(It != Params.end() && "Invalid parameter offset"); 31 return It->second; 32 } 33 34 SourceInfo Function::getSource(CodePtr PC) const { 35 unsigned Offset = PC - getCodeBegin(); 36 using Elem = std::pair<unsigned, SourceInfo>; 37 auto It = std::lower_bound(SrcMap.begin(), SrcMap.end(), Elem{Offset, {}}, 38 [](Elem A, Elem B) { return A.first < B.first; }); 39 if (It == SrcMap.end() || It->first != Offset) 40 llvm::report_fatal_error("missing source location"); 41 return It->second; 42 } 43 44 bool Function::isVirtual() const { 45 if (auto *M = dyn_cast<CXXMethodDecl>(F)) 46 return M->isVirtual(); 47 return false; 48 } 49