From d36b47c481c213f5b77fd2755b800ff9604866c0 Mon Sep 17 00:00:00 2001 From: Ying Yi Date: Tue, 6 Sep 2016 19:31:18 +0000 Subject: [llvm-cov] Add the "Go to first unexecuted line" feature. This patch provides easy navigation to find the zero count lines, especially useful when the source file is very large. Differential Revision: https://reviews.llvm.org/D23277 llvm-svn: 280739 --- llvm/tools/llvm-cov/SourceCoverageView.cpp | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) (limited to 'llvm/tools/llvm-cov/SourceCoverageView.cpp') diff --git a/llvm/tools/llvm-cov/SourceCoverageView.cpp b/llvm/tools/llvm-cov/SourceCoverageView.cpp index b61d791..323352a 100644 --- a/llvm/tools/llvm-cov/SourceCoverageView.cpp +++ b/llvm/tools/llvm-cov/SourceCoverageView.cpp @@ -82,6 +82,25 @@ CoveragePrinter::create(const CoverageViewOptions &Opts) { llvm_unreachable("Unknown coverage output format!"); } +unsigned SourceCoverageView::getFirstUncoveredLineNo() { + auto CheckIfUncovered = [](const coverage::CoverageSegment &S) { + return S.HasCount && S.Count == 0; + }; + // L is less than R if (1) it's an uncovered segment (has a 0 count), and (2) + // either R is not an uncovered segment, or L has a lower line number than R. + const auto MinSegIt = + std::min_element(CoverageInfo.begin(), CoverageInfo.end(), + [CheckIfUncovered](const coverage::CoverageSegment &L, + const coverage::CoverageSegment &R) { + return (CheckIfUncovered(L) && + (!CheckIfUncovered(R) || (L.Line < R.Line))); + }); + if (CheckIfUncovered(*MinSegIt)) + return (*MinSegIt).Line; + // There is no uncovered line, return zero. + return 0; +} + std::string SourceCoverageView::formatCount(uint64_t N) { std::string Number = utostr(N); int Len = Number.size(); @@ -142,8 +161,12 @@ void SourceCoverageView::print(raw_ostream &OS, bool WholeFile, renderViewHeader(OS); + unsigned FirstUncoveredLineNo = 0; + if (WholeFile) + FirstUncoveredLineNo = getFirstUncoveredLineNo(); + if (ShowSourceName) - renderSourceName(OS, WholeFile); + renderSourceName(OS, WholeFile, FirstUncoveredLineNo); renderTableHeader(OS, ViewDepth); // We need the expansions and instantiations sorted so we can go through them -- cgit v1.1