52 lines
2 KiB
C++
52 lines
2 KiB
C++
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//===--- Function.h - Bytecode function for the VM --------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Function.h"
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#include "Opcode.h"
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#include "Program.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/Basic/Builtins.h"
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using namespace clang;
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using namespace clang::interp;
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Function::Function(Program &P, const FunctionDecl *F, unsigned ArgSize,
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llvm::SmallVectorImpl<PrimType> &&ParamTypes,
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llvm::DenseMap<unsigned, ParamDescriptor> &&Params,
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llvm::SmallVectorImpl<unsigned> &&ParamOffsets,
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bool HasThisPointer, bool HasRVO, bool UnevaluatedBuiltin)
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: P(P), Loc(F->getBeginLoc()), F(F), ArgSize(ArgSize),
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ParamTypes(std::move(ParamTypes)), Params(std::move(Params)),
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ParamOffsets(std::move(ParamOffsets)), HasThisPointer(HasThisPointer),
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HasRVO(HasRVO), Variadic(F->isVariadic()),
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IsUnevaluatedBuiltin(UnevaluatedBuiltin) {}
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Function::ParamDescriptor Function::getParamDescriptor(unsigned Offset) const {
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auto It = Params.find(Offset);
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assert(It != Params.end() && "Invalid parameter offset");
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return It->second;
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}
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SourceInfo Function::getSource(CodePtr PC) const {
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assert(PC >= getCodeBegin() && "PC does not belong to this function");
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assert(PC <= getCodeEnd() && "PC Does not belong to this function");
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assert(hasBody() && "Function has no body");
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unsigned Offset = PC - getCodeBegin();
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using Elem = std::pair<unsigned, SourceInfo>;
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auto It = llvm::lower_bound(SrcMap, Elem{Offset, {}}, llvm::less_first());
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assert(It != SrcMap.end());
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return It->second;
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}
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bool Function::isVirtual() const {
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if (const auto *M = dyn_cast<CXXMethodDecl>(F))
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return M->isVirtual();
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return false;
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}
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