| 1 | //===--- Function.h - Bytecode function for the VM --------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "Function.h" |
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| 10 | #include "Opcode.h" |
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| 11 | #include "Program.h" |
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| 12 | #include "clang/AST/Decl.h" |
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| 13 | #include "clang/AST/DeclCXX.h" |
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| 14 | #include "clang/Basic/Builtins.h" |
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| 15 | |
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| 16 | using namespace clang; |
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| 17 | using namespace clang::interp; |
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| 18 | |
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| 19 | Function::Function(Program &P, const FunctionDecl *F, unsigned ArgSize, |
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| 20 | llvm::SmallVectorImpl<PrimType> &&ParamTypes, |
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| 21 | llvm::DenseMap<unsigned, ParamDescriptor> &&Params, |
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| 22 | llvm::SmallVectorImpl<unsigned> &&ParamOffsets, |
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| 23 | bool HasThisPointer, bool HasRVO, bool UnevaluatedBuiltin) |
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| 24 | : P(P), Loc(F->getBeginLoc()), F(F), ArgSize(ArgSize), |
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| 25 | ParamTypes(std::move(ParamTypes)), Params(std::move(Params)), |
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| 26 | ParamOffsets(std::move(ParamOffsets)), HasThisPointer(HasThisPointer), |
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| 27 | HasRVO(HasRVO), Variadic(F->isVariadic()), |
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| 28 | IsUnevaluatedBuiltin(UnevaluatedBuiltin) {} |
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| 29 | |
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| 30 | Function::ParamDescriptor Function::getParamDescriptor(unsigned Offset) const { |
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| 31 | auto It = Params.find(Val: Offset); |
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| 32 | assert(It != Params.end() && "Invalid parameter offset" ); |
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| 33 | return It->second; |
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| 34 | } |
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| 35 | |
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| 36 | SourceInfo Function::getSource(CodePtr PC) const { |
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| 37 | assert(PC >= getCodeBegin() && "PC does not belong to this function" ); |
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| 38 | assert(PC <= getCodeEnd() && "PC Does not belong to this function" ); |
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| 39 | assert(hasBody() && "Function has no body" ); |
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| 40 | unsigned Offset = PC - getCodeBegin(); |
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| 41 | using Elem = std::pair<unsigned, SourceInfo>; |
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| 42 | auto It = llvm::lower_bound(Range: SrcMap, Value: Elem{Offset, {}}, C: llvm::less_first()); |
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| 43 | assert(It != SrcMap.end()); |
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| 44 | return It->second; |
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| 45 | } |
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| 46 | |
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| 47 | bool Function::isVirtual() const { |
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| 48 | if (const auto *M = dyn_cast<CXXMethodDecl>(Val: F)) |
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| 49 | return M->isVirtual(); |
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| 50 | return false; |
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| 51 | } |
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| 52 | |
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