llvm-cov: Introduce `--binary-counters` (#120841)

In `llvm-cov show`, this option rounds counters (line, branch) to
`[1,0]` at rendering. This will be useful when the number of counts
doesn't interest but **Covered/uncoverd** does.

1 files changed, 12 insertions, 1 deletions

diff --git a/llvm/tools/llvm-cov/SourceCoverageView.h b/llvm/tools/llvm-cov/SourceCoverageView.h
index 2b1570d..0b4e397 100644
--- a/llvm/tools/llvm-cov/SourceCoverageView.h
+++ b/llvm/tools/llvm-cov/SourceCoverageView.h
@@ -180,6 +180,8 @@ class SourceCoverageView {
   /// on display.
   std::vector<InstantiationView> InstantiationSubViews;
 
+  bool BinaryCounters;
+
   /// Get the first uncovered line number for the source file.
   unsigned getFirstUncoveredLineNo();
 
@@ -266,6 +268,14 @@ protected:
   /// digits.
   static std::string formatCount(uint64_t N);
 
+  uint64_t BinaryCount(uint64_t N) const {
+    return (N && BinaryCounters ? 1 : N);
+  }
+
+  std::string formatBinaryCount(uint64_t N) const {
+    return formatCount(BinaryCount(N));
+  }
+
   /// Check if region marker output is expected for a line.
   bool shouldRenderRegionMarkers(const LineCoverageStats &LCS) const;
 
@@ -276,7 +286,8 @@ protected:
                      const CoverageViewOptions &Options,
                      CoverageData &&CoverageInfo)
       : SourceName(SourceName), File(File), Options(Options),
-        CoverageInfo(std::move(CoverageInfo)) {}
+        CoverageInfo(std::move(CoverageInfo)),
+        BinaryCounters(Options.BinaryCounters) {}
 
 public:
   static std::unique_ptr<SourceCoverageView>