nicolas/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add a cc1 "dump-coverage-mapping" for testing coverage mapping.

Browse Source 
Differential Revision: http://reviews.llvm.org/D4799

llvm-svn: 215258
This commit is contained in:
Alex Lorenz
2014-08-08 23:41:24 +00:00
parent 1c5a38584d
commit f2cf38e020
7 changed files with 71 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
clang/lib/CodeGen/CoverageMappingGen.cpp
View File

@@ -18,6 +18,7 @@
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/ProfileData/CoverageMapping.h"
#include "llvm/ProfileData/CoverageMappingWriter.h"
#include "llvm/ProfileData/CoverageMappingReader.h"
#include "llvm/Support/FileSystem.h"
using namespace clang;
@@ -1052,8 +1053,36 @@ static StringRef getCoverageSection(const CodeGenModule &CGM) {
return isMachO(CGM) ? "__DATA,__llvm_covmap" : "__llvm_covmap";
}
static void dump(llvm::raw_ostream &OS, const CoverageMappingRecord &Function) {
OS << Function.FunctionName << ":\n";
CounterMappingContext Ctx(Function.Expressions);
for (const auto &R : Function.MappingRegions) {
OS.indent(2);
switch (R.Kind) {
case CounterMappingRegion::CodeRegion:
break;
case CounterMappingRegion::ExpansionRegion:
OS << "Expansion,";
break;
case CounterMappingRegion::SkippedRegion:
OS << "Skipped,";
break;
}
OS << "File " << R.FileID << ", " << R.LineStart << ":"
<< R.ColumnStart << " -> " << R.LineEnd << ":" << R.ColumnEnd
<< " = ";
Ctx.dump(R.Count);
OS << " (HasCodeBefore = " << R.HasCodeBefore;
if (R.Kind == CounterMappingRegion::ExpansionRegion)
OS << ", Expanded file = " << R.ExpandedFileID;
OS << ")\n";
}
}
void CoverageMappingModuleGen::addFunctionMappingRecord(
llvm::GlobalVariable *FunctionName, unsigned FunctionNameSize,
llvm::GlobalVariable *FunctionName, StringRef FunctionNameValue,
const std::string &CoverageMapping) {
llvm::LLVMContext &Ctx = CGM.getLLVMContext();
auto *Int32Ty = llvm::Type::getInt32Ty(Ctx);
@@ -1066,11 +1095,33 @@ void CoverageMappingModuleGen::addFunctionMappingRecord(
llvm::Constant *FunctionRecordVals[] = {
llvm::ConstantExpr::getBitCast(FunctionName, Int8PtrTy),
llvm::ConstantInt::get(Int32Ty, FunctionNameSize),
llvm::ConstantInt::get(Int32Ty, FunctionNameValue.size()),
llvm::ConstantInt::get(Int32Ty, CoverageMapping.size())};
FunctionRecords.push_back(llvm::ConstantStruct::get(
FunctionRecordTy, makeArrayRef(FunctionRecordVals)));
CoverageMappings += CoverageMapping;
if (CGM.getCodeGenOpts().DumpCoverageMapping) {
// Dump the coverage mapping data for this function by decoding the
// encoded data. This allows us to dump the mapping regions which were
// also processed by the CoverageMappingWriter which performs
// additional minimization operations such as reducing the number of
// expressions.
std::vector<StringRef> Filenames;
std::vector<CounterExpression> Expressions;
std::vector<CounterMappingRegion> Regions;
llvm::SmallVector<StringRef, 16> FilenameRefs;
FilenameRefs.resize(FileEntries.size());
for (const auto &Entry : FileEntries)
FilenameRefs[Entry.second] = Entry.first->getName();
RawCoverageMappingReader Reader(FunctionNameValue, CoverageMapping,
FilenameRefs,
Filenames, Expressions, Regions);
CoverageMappingRecord FunctionRecord;
if (Reader.read(FunctionRecord))
return;
dump(llvm::outs(), FunctionRecord);
}
}
void CoverageMappingModuleGen::emit() {