Index: test/tools/llvm-cov/hideUnexecutedSubviews.test
===================================================================
--- test/tools/llvm-cov/hideUnexecutedSubviews.test
+++ test/tools/llvm-cov/hideUnexecutedSubviews.test
@@ -1,8 +1,8 @@
 RUN: llvm-profdata merge %S/Inputs/hideUnexecutedSubviews.proftext -o %t.profdata
 
-RUN: llvm-cov show %S/Inputs/templateInstantiations.covmapping -instr-profile %t.profdata -path-equivalence=/tmp,%S %S/showTemplateInstantiations.cpp | FileCheck -check-prefix=FILE %s
+RUN: llvm-cov show %S/Inputs/templateInstantiations.covmapping -instr-profile %t.profdata -show-region-summary -show-instantiation-summary -path-equivalence=/tmp,%S %S/showTemplateInstantiations.cpp | FileCheck -check-prefix=FILE %s
 
-RUN: llvm-cov show %S/Inputs/templateInstantiations.covmapping -instr-profile %t.profdata -format html -o %t.html.dir -path-equivalence=/tmp,%S %S/showTemplateInstantiations.cpp
+RUN: llvm-cov show %S/Inputs/templateInstantiations.covmapping -instr-profile %t.profdata -format html -show-region-summary -show-instantiation-summary -o %t.html.dir -path-equivalence=/tmp,%S %S/showTemplateInstantiations.cpp
 RUN: FileCheck -check-prefix=FILE %s -input-file %t.html.dir/coverage/tmp/showTemplateInstantiations.cpp.html
 
 FILE: Unexecuted instantiation: _Z4funcIbEiT_
Index: test/tools/llvm-cov/report.cpp
===================================================================
--- test/tools/llvm-cov/report.cpp
+++ test/tools/llvm-cov/report.cpp
@@ -1,4 +1,4 @@
-// RUN: llvm-cov report %S/Inputs/report.covmapping -instr-profile %S/Inputs/report.profdata -path-equivalence=,%S 2>&1 | FileCheck %s
+// RUN: llvm-cov report %S/Inputs/report.covmapping -instr-profile %S/Inputs/report.profdata -path-equivalence=,%S 2>&1 -show-region-summary -show-instantiation-summary | FileCheck %s
 // RUN: llvm-cov report -show-functions %S/Inputs/report.covmapping -instr-profile %S/Inputs/report.profdata -path-equivalence=,%S %s 2>&1 | FileCheck -check-prefix=FILT %s
 // RUN: llvm-cov report -show-functions %S/Inputs/report.covmapping -instr-profile %S/Inputs/report.profdata -path-equivalence=,%S %s does-not-exist.cpp 2>&1 | FileCheck -check-prefix=FILT %s
 
Index: test/tools/llvm-cov/showLineExecutionCounts.cpp
===================================================================
--- test/tools/llvm-cov/showLineExecutionCounts.cpp
+++ test/tools/llvm-cov/showLineExecutionCounts.cpp
@@ -80,14 +80,11 @@
 // HTML-INDEX-LABEL: <table>
 // HTML-INDEX: <td class='column-entry-left'>Filename</td>
 // HTML-INDEX: <td class='column-entry'>Function Coverage</td>
-// HTML-INDEX: <td class='column-entry'>Instantiation Coverage</td>
 // HTML-INDEX: <td class='column-entry'>Line Coverage</td>
 // HTML-INDEX: <td class='column-entry'>Region Coverage</td>
 // HTML-INDEX: <a href='coverage{{.*}}showLineExecutionCounts.cpp.html'{{.*}}showLineExecutionCounts.cpp</a>
 // HTML-INDEX: <td class='column-entry-green'>
 // HTML-INDEX: 100.00% (1/1)
-// HTML-INDEX: <td class='column-entry-green'>
-// HTML-INDEX: 100.00% (1/1)
 // HTML-INDEX: <td class='column-entry-yellow'>
 // HTML-INDEX: 80.00% (16/20)
 // HTML-INDEX: <td class='column-entry-red'>
Index: tools/llvm-cov/CodeCoverage.cpp
===================================================================
--- tools/llvm-cov/CodeCoverage.cpp
+++ tools/llvm-cov/CodeCoverage.cpp
@@ -598,6 +598,15 @@
   cl::list<std::string> DemanglerOpts(
       "Xdemangler", cl::desc("<demangler-path>|<demangler-option>"));
 
+  cl::opt<bool> RegionSummary(
+      "show-region-summary", cl::Optional,
+      cl::desc("Show region statistics in summary table"),
+      cl::init(true));
+
+  cl::opt<bool> InstantiationSummary(
+      "show-instantiation-summary", cl::Optional,
+      cl::desc("Show instantiation statistics in summary table"));
+
   auto commandLineParser = [&, this](int argc, const char **argv) -> int {
     cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
     ViewOpts.Debug = DebugDump;
@@ -696,6 +705,9 @@
       ::exit(0);
     }
 
+    ViewOpts.ShowRegionSummary = RegionSummary;
+    ViewOpts.ShowInstantiationSummary = InstantiationSummary;
+
     return 0;
   };
 
Index: tools/llvm-cov/CoverageReport.cpp
===================================================================
--- tools/llvm-cov/CoverageReport.cpp
+++ tools/llvm-cov/CoverageReport.cpp
@@ -181,18 +181,22 @@
   SmallString<256> FileName = File.Name;
   sys::path::remove_dots(FileName, /*remove_dot_dots=*/true);
   sys::path::native(FileName);
-  OS << column(FileName, FileReportColumns[0], Column::NoTrim)
-     << format("%*u", FileReportColumns[1],
-               (unsigned)File.RegionCoverage.NumRegions);
-  Options.colored_ostream(OS, FileCoverageColor) << format(
-      "%*u", FileReportColumns[2], (unsigned)File.RegionCoverage.NotCovered);
-  if (File.RegionCoverage.NumRegions)
-    Options.colored_ostream(OS, FileCoverageColor)
-        << format("%*.2f", FileReportColumns[3] - 1,
-                  File.RegionCoverage.getPercentCovered())
-        << '%';
-  else
-    OS << column("-", FileReportColumns[3], Column::RightAlignment);
+  OS << column(FileName, FileReportColumns[0], Column::NoTrim);
+
+  if (Options.ShowRegionSummary) {
+    OS << format("%*u", FileReportColumns[1],
+                 (unsigned)File.RegionCoverage.NumRegions);
+    Options.colored_ostream(OS, FileCoverageColor) << format(
+        "%*u", FileReportColumns[2], (unsigned)File.RegionCoverage.NotCovered);
+    if (File.RegionCoverage.NumRegions)
+      Options.colored_ostream(OS, FileCoverageColor)
+          << format("%*.2f", FileReportColumns[3] - 1,
+                    File.RegionCoverage.getPercentCovered())
+          << '%';
+    else
+      OS << column("-", FileReportColumns[3], Column::RightAlignment);
+  }
+
   OS << format("%*u", FileReportColumns[4],
                (unsigned)File.FunctionCoverage.NumFunctions);
   OS << format("%*u", FileReportColumns[5],
@@ -205,18 +209,22 @@
         << '%';
   else
     OS << column("-", FileReportColumns[6], Column::RightAlignment);
-  OS << format("%*u", FileReportColumns[7],
-               (unsigned)File.InstantiationCoverage.NumFunctions);
-  OS << format("%*u", FileReportColumns[8],
-               (unsigned)(File.InstantiationCoverage.NumFunctions -
-                          File.InstantiationCoverage.Executed));
-  if (File.InstantiationCoverage.NumFunctions)
-    Options.colored_ostream(OS, InstantiationCoverageColor)
-        << format("%*.2f", FileReportColumns[9] - 1,
-                  File.InstantiationCoverage.getPercentCovered())
-        << '%';
-  else
-    OS << column("-", FileReportColumns[9], Column::RightAlignment);
+
+  if (Options.ShowInstantiationSummary) {
+    OS << format("%*u", FileReportColumns[7],
+                 (unsigned)File.InstantiationCoverage.NumFunctions);
+    OS << format("%*u", FileReportColumns[8],
+                 (unsigned)(File.InstantiationCoverage.NumFunctions -
+                            File.InstantiationCoverage.Executed));
+    if (File.InstantiationCoverage.NumFunctions)
+      Options.colored_ostream(OS, InstantiationCoverageColor)
+          << format("%*.2f", FileReportColumns[9] - 1,
+                    File.InstantiationCoverage.getPercentCovered())
+          << '%';
+    else
+      OS << column("-", FileReportColumns[9], Column::RightAlignment);
+  }
+
   OS << format("%*u", FileReportColumns[10],
                (unsigned)File.LineCoverage.NumLines);
   Options.colored_ostream(OS, LineCoverageColor) << format(
@@ -355,17 +363,19 @@
     Filenames.emplace_back(FCS.Name);
   adjustColumnWidths(Filenames, {});
 
-  OS << column("Filename", FileReportColumns[0])
-     << column("Regions", FileReportColumns[1], Column::RightAlignment)
-     << column("Missed Regions", FileReportColumns[2], Column::RightAlignment)
-     << column("Cover", FileReportColumns[3], Column::RightAlignment)
-     << column("Functions", FileReportColumns[4], Column::RightAlignment)
+  OS << column("Filename", FileReportColumns[0]);
+  if (Options.ShowRegionSummary)
+    OS << column("Regions", FileReportColumns[1], Column::RightAlignment)
+       << column("Missed Regions", FileReportColumns[2], Column::RightAlignment)
+       << column("Cover", FileReportColumns[3], Column::RightAlignment);
+  OS << column("Functions", FileReportColumns[4], Column::RightAlignment)
      << column("Missed Functions", FileReportColumns[5], Column::RightAlignment)
-     << column("Executed", FileReportColumns[6], Column::RightAlignment)
-     << column("Instantiations", FileReportColumns[7], Column::RightAlignment)
-     << column("Missed Insts.", FileReportColumns[8], Column::RightAlignment)
-     << column("Executed", FileReportColumns[9], Column::RightAlignment)
-     << column("Lines", FileReportColumns[10], Column::RightAlignment)
+     << column("Executed", FileReportColumns[6], Column::RightAlignment);
+  if (Options.ShowInstantiationSummary)
+    OS << column("Instantiations", FileReportColumns[7], Column::RightAlignment)
+       << column("Missed Insts.", FileReportColumns[8], Column::RightAlignment)
+       << column("Executed", FileReportColumns[9], Column::RightAlignment);
+  OS << column("Lines", FileReportColumns[10], Column::RightAlignment)
      << column("Missed Lines", FileReportColumns[11], Column::RightAlignment)
      << column("Cover", FileReportColumns[12], Column::RightAlignment) << "\n";
   renderDivider(FileReportColumns, OS);
Index: tools/llvm-cov/CoverageViewOptions.h
===================================================================
--- tools/llvm-cov/CoverageViewOptions.h
+++ tools/llvm-cov/CoverageViewOptions.h
@@ -31,6 +31,8 @@
   bool ShowExpandedRegions;
   bool ShowFunctionInstantiations;
   bool ShowFullFilenames;
+  bool ShowRegionSummary;
+  bool ShowInstantiationSummary;
   OutputFormat Format;
   std::string ShowOutputDirectory;
   std::vector<std::string> DemanglerOpts;
Index: tools/llvm-cov/SourceCoverageViewHTML.cpp
===================================================================
--- tools/llvm-cov/SourceCoverageViewHTML.cpp
+++ tools/llvm-cov/SourceCoverageViewHTML.cpp
@@ -285,12 +285,16 @@
 }
 
 /// Emit column labels for the table in the index.
-static void emitColumnLabelsForIndex(raw_ostream &OS) {
+static void emitColumnLabelsForIndex(raw_ostream &OS,
+                                     const CoverageViewOptions &Opts) {
   SmallVector<std::string, 4> Columns;
   Columns.emplace_back(tag("td", "Filename", "column-entry-left"));
-  for (const char *Label : {"Function Coverage", "Instantiation Coverage",
-                            "Line Coverage", "Region Coverage"})
-    Columns.emplace_back(tag("td", Label, "column-entry"));
+  Columns.emplace_back(tag("td", "Function Coverage", "column-entry"));
+  if (Opts.ShowInstantiationSummary)
+    Columns.emplace_back(tag("td", "Instantiation Coverage", "column-entry"));
+  Columns.emplace_back(tag("td", "Line Coverage", "column-entry"));
+  if (Opts.ShowRegionSummary)
+    Columns.emplace_back(tag("td", "Region Coverage", "column-entry"));
   OS << tag("tr", join(Columns.begin(), Columns.end(), ""));
 }
 
@@ -345,14 +349,16 @@
   AddCoverageTripleToColumn(FCS.FunctionCoverage.Executed,
                             FCS.FunctionCoverage.NumFunctions,
                             FCS.FunctionCoverage.getPercentCovered());
-  AddCoverageTripleToColumn(FCS.InstantiationCoverage.Executed,
-                            FCS.InstantiationCoverage.NumFunctions,
-                            FCS.InstantiationCoverage.getPercentCovered());
+  if (Opts.ShowInstantiationSummary)
+    AddCoverageTripleToColumn(FCS.InstantiationCoverage.Executed,
+                              FCS.InstantiationCoverage.NumFunctions,
+                              FCS.InstantiationCoverage.getPercentCovered());
   AddCoverageTripleToColumn(FCS.LineCoverage.Covered, FCS.LineCoverage.NumLines,
                             FCS.LineCoverage.getPercentCovered());
-  AddCoverageTripleToColumn(FCS.RegionCoverage.Covered,
-                            FCS.RegionCoverage.NumRegions,
-                            FCS.RegionCoverage.getPercentCovered());
+  if (Opts.ShowRegionSummary)
+    AddCoverageTripleToColumn(FCS.RegionCoverage.Covered,
+                              FCS.RegionCoverage.NumRegions,
+                              FCS.RegionCoverage.getPercentCovered());
 
   OS << tag("tr", join(Columns.begin(), Columns.end(), ""), "light-row");
 }
@@ -395,7 +401,7 @@
   // Emit a table containing links to reports for each file in the covmapping.
   // Exclude files which don't contain any regions.
   OSRef << BeginCenteredDiv << BeginTable;
-  emitColumnLabelsForIndex(OSRef);
+  emitColumnLabelsForIndex(OSRef, Opts);
   FileCoverageSummary Totals("TOTALS");
   auto FileReports =
       CoverageReport::prepareFileReports(Coverage, Totals, SourceFiles);