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
Function(Program & P,const FunctionDecl * F,unsigned ArgSize,llvm::SmallVector<PrimType,8> && ParamTypes,llvm::DenseMap<unsigned,ParamDescriptor> && Params)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
getCodeBegin() const24 CodePtr Function::getCodeBegin() const { return Code.data(); }
25
getCodeEnd() const26 CodePtr Function::getCodeEnd() const { return Code.data() + Code.size(); }
27
getParamDescriptor(unsigned Offset) const28 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
getSource(CodePtr PC) const34 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
isVirtual() const44 bool Function::isVirtual() const {
45 if (auto *M = dyn_cast<CXXMethodDecl>(F))
46 return M->isVirtual();
47 return false;
48 }
49