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-rw-r--r--lib/AST/Interp/Function.cpp48
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/AST/Interp/Function.cpp b/lib/AST/Interp/Function.cpp
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+++ b/lib/AST/Interp/Function.cpp
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+//===--- 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)
+ : P(P), Loc(F->getBeginLoc()), F(F), ArgSize(ArgSize),
+ ParamTypes(std::move(ParamTypes)), Params(std::move(Params)) {}
+
+CodePtr Function::getCodeBegin() const { return Code.data(); }
+
+CodePtr Function::getCodeEnd() const { return Code.data() + Code.size(); }
+
+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 = std::lower_bound(SrcMap.begin(), SrcMap.end(), Elem{Offset, {}},
+ [](Elem A, Elem B) { return A.first < B.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;
+}