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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
//===---- CoverageMappingGen.h - Coverage mapping generation ----*- 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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//
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// Instrumentation-based code coverage mapping generator
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_CODEGEN_COVERAGEMAPPINGGEN_H
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#define LLVM_CLANG_LIB_CODEGEN_COVERAGEMAPPINGGEN_H
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#include "clang/Basic/LLVM.h"
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#include "clang/Basic/SourceLocation.h"
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#include "clang/Lex/PPCallbacks.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/IR/GlobalValue.h"
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#include "llvm/Support/raw_ostream.h"
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namespace clang {
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class LangOptions;
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class SourceManager;
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class FileEntry;
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class Preprocessor;
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class Decl;
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class Stmt;
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/// Stores additional source code information like skipped ranges which
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/// is required by the coverage mapping generator and is obtained from
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/// the preprocessor.
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class CoverageSourceInfo : public PPCallbacks {
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std::vector<SourceRange> SkippedRanges;
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public:
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ArrayRef<SourceRange> getSkippedRanges() const { return SkippedRanges; }
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void SourceRangeSkipped(SourceRange Range, SourceLocation EndifLoc) override;
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};
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namespace CodeGen {
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class CodeGenModule;
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/// Organizes the cross-function state that is used while generating
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/// code coverage mapping data.
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class CoverageMappingModuleGen {
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CodeGenModule &CGM;
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CoverageSourceInfo &SourceInfo;
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llvm::SmallDenseMap<const FileEntry *, unsigned, 8> FileEntries;
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std::vector<llvm::Constant *> FunctionRecords;
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std::vector<llvm::Constant *> FunctionNames;
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llvm::StructType *FunctionRecordTy;
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std::vector<std::string> CoverageMappings;
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public:
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CoverageMappingModuleGen(CodeGenModule &CGM, CoverageSourceInfo &SourceInfo)
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: CGM(CGM), SourceInfo(SourceInfo), FunctionRecordTy(nullptr) {}
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CoverageSourceInfo &getSourceInfo() const {
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return SourceInfo;
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}
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/// Add a function's coverage mapping record to the collection of the
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/// function mapping records.
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void addFunctionMappingRecord(llvm::GlobalVariable *FunctionName,
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StringRef FunctionNameValue,
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uint64_t FunctionHash,
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const std::string &CoverageMapping,
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bool IsUsed = true);
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/// Emit the coverage mapping data for a translation unit.
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void emit();
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/// Return the coverage mapping translation unit file id
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/// for the given file.
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unsigned getFileID(const FileEntry *File);
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};
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/// Organizes the per-function state that is used while generating
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/// code coverage mapping data.
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class CoverageMappingGen {
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CoverageMappingModuleGen &CVM;
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SourceManager &SM;
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const LangOptions &LangOpts;
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llvm::DenseMap<const Stmt *, unsigned> *CounterMap;
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public:
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CoverageMappingGen(CoverageMappingModuleGen &CVM, SourceManager &SM,
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const LangOptions &LangOpts)
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: CVM(CVM), SM(SM), LangOpts(LangOpts), CounterMap(nullptr) {}
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CoverageMappingGen(CoverageMappingModuleGen &CVM, SourceManager &SM,
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const LangOptions &LangOpts,
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llvm::DenseMap<const Stmt *, unsigned> *CounterMap)
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: CVM(CVM), SM(SM), LangOpts(LangOpts), CounterMap(CounterMap) {}
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/// Emit the coverage mapping data which maps the regions of
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/// code to counters that will be used to find the execution
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/// counts for those regions.
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void emitCounterMapping(const Decl *D, llvm::raw_ostream &OS);
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/// Emit the coverage mapping data for an unused function.
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/// It creates mapping regions with the counter of zero.
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void emitEmptyMapping(const Decl *D, llvm::raw_ostream &OS);
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};
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} // end namespace CodeGen
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} // end namespace clang
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#endif
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