0ddd13acc9
Implement passing the this pointer to member functions and constructors. The this pointer is passed via the stack. This changes the functions to explicitly track whether they have a RVO pointer and a this pointer. Differential Revision: https://reviews.llvm.org/D134699
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
//===--- Function.h - Bytecode function for the VM --------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Function.h"
|
|
#include "Program.h"
|
|
#include "Opcode.h"
|
|
#include "clang/AST/Decl.h"
|
|
#include "clang/AST/DeclCXX.h"
|
|
|
|
using namespace clang;
|
|
using namespace clang::interp;
|
|
|
|
Function::Function(Program &P, const FunctionDecl *F, unsigned ArgSize,
|
|
llvm::SmallVector<PrimType, 8> &&ParamTypes,
|
|
llvm::DenseMap<unsigned, ParamDescriptor> &&Params,
|
|
bool HasThisPointer, bool HasRVO)
|
|
: P(P), Loc(F->getBeginLoc()), F(F), ArgSize(ArgSize),
|
|
ParamTypes(std::move(ParamTypes)), Params(std::move(Params)),
|
|
HasThisPointer(HasThisPointer), HasRVO(HasRVO) {}
|
|
|
|
Function::ParamDescriptor Function::getParamDescriptor(unsigned Offset) const {
|
|
auto It = Params.find(Offset);
|
|
assert(It != Params.end() && "Invalid parameter offset");
|
|
return It->second;
|
|
}
|
|
|
|
SourceInfo Function::getSource(CodePtr PC) const {
|
|
unsigned Offset = PC - getCodeBegin();
|
|
using Elem = std::pair<unsigned, SourceInfo>;
|
|
auto It = llvm::lower_bound(SrcMap, Elem{Offset, {}}, llvm::less_first());
|
|
if (It == SrcMap.end() || It->first != Offset)
|
|
llvm::report_fatal_error("missing source location");
|
|
return It->second;
|
|
}
|
|
|
|
bool Function::isVirtual() const {
|
|
if (auto *M = dyn_cast<CXXMethodDecl>(F))
|
|
return M->isVirtual();
|
|
return false;
|
|
}
|