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10a4972a8d
Revert the two changes to thread CodeGenOptions into the TargetInfo allocation and to fix the layering violation by moving CodeGenOptions into Basic. Code Generation is arguably not particularly "basic". This addresses Richard's post-commit review comments. This change purely does the mechanical revert and will be followed up with an alternate approach to thread the desired information into TargetInfo. llvm-svn: 265806
117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
//===---- CoverageMappingGen.h - Coverage mapping generation ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/Frontend/CodeGenOptions.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/ADT/StringMap.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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/// \brief 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) override;
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};
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namespace CodeGen {
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class CodeGenModule;
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/// \brief 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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/// \brief 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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/// \brief Emit the coverage mapping data for a translation unit.
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void emit();
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/// \brief 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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/// \brief 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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/// \brief 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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/// \brief 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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