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//===- CoverageSummaryInfo.cpp - Coverage summary for function/file -------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// These structures are used to represent code coverage metrics
// for functions/files.
//
//===----------------------------------------------------------------------===//
#include "CoverageSummaryInfo.h"
using namespace llvm;
using namespace coverage;
FunctionCoverageSummary
FunctionCoverageSummary::get(const coverage::FunctionRecord &Function) {
// Compute the region coverage
size_t NumCodeRegions = 0, CoveredRegions = 0;
for (auto &CR : Function.CountedRegions) {
if (CR.Kind != CounterMappingRegion::CodeRegion)
continue;
++NumCodeRegions;
if (CR.ExecutionCount != 0)
++CoveredRegions;
}
// Compute the line coverage
size_t NumLines = 0, CoveredLines = 0;
for (unsigned FileID = 0, E = Function.Filenames.size(); FileID < E;
++FileID) {
// Find the line start and end of the function's source code
// in that particular file
unsigned LineStart = std::numeric_limits<unsigned>::max();
unsigned LineEnd = 0;
for (auto &CR : Function.CountedRegions) {
if (CR.FileID != FileID)
continue;
LineStart = std::min(LineStart, CR.LineStart);
LineEnd = std::max(LineEnd, CR.LineEnd);
}
unsigned LineCount = LineEnd - LineStart + 1;
// Get counters
llvm::SmallVector<uint64_t, 16> ExecutionCounts;
ExecutionCounts.resize(LineCount, 0);
for (auto &CR : Function.CountedRegions) {
if (CR.FileID != FileID)
continue;
// Ignore the lines that were skipped by the preprocessor.
auto ExecutionCount = CR.ExecutionCount;
if (CR.Kind == CounterMappingRegion::SkippedRegion) {
LineCount -= CR.LineEnd - CR.LineStart + 1;
ExecutionCount = 1;
}
for (unsigned I = CR.LineStart; I <= CR.LineEnd; ++I)
ExecutionCounts[I - LineStart] = ExecutionCount;
}
CoveredLines += LineCount - std::count(ExecutionCounts.begin(),
ExecutionCounts.end(), 0);
NumLines += LineCount;
}
return FunctionCoverageSummary(
Function.Name, Function.ExecutionCount,
RegionCoverageInfo(CoveredRegions, NumCodeRegions),
LineCoverageInfo(CoveredLines, 0, NumLines));
}
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