2 files changed, 12 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp b/llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
index 557cc73dcda..7923a888118 100644
--- a/llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
@@ -218,6 +218,12 @@ bool InstructionSelect::runOnMachineFunction(MachineFunction &MF) {
   auto &TLI = *MF.getSubtarget().getTargetLowering();
   TLI.finalizeLowering(MF);
 
+  DEBUG({
+    dbgs() << "Rules covered by selecting function: " << MF.getName() << ":";
+    for (auto RuleID : CoverageInfo.covered())
+      dbgs() << " id" << RuleID;
+    dbgs() << "\n\n";
+  });
   CoverageInfo.emit(CoveragePrefix,
                     MF.getSubtarget()
                         .getTargetLowering()
diff --git a/llvm/lib/Support/CodeGenCoverage.cpp b/llvm/lib/Support/CodeGenCoverage.cpp
index ebfe65a398c..4948f1348fc 100644
--- a/llvm/lib/Support/CodeGenCoverage.cpp
+++ b/llvm/lib/Support/CodeGenCoverage.cpp
@@ -38,12 +38,17 @@ void CodeGenCoverage::setCovered(uint64_t RuleID) {
   RuleCoverage[RuleID] = true;
 }
 
-bool CodeGenCoverage::isCovered(uint64_t RuleID) {
+bool CodeGenCoverage::isCovered(uint64_t RuleID) const {
   if (RuleCoverage.size() <= RuleID)
     return false;
   return RuleCoverage[RuleID];
 }
 
+iterator_range<CodeGenCoverage::const_covered_iterator>
+CodeGenCoverage::covered() const {
+  return RuleCoverage.set_bits();
+}
+
 bool CodeGenCoverage::parse(MemoryBuffer &Buffer, StringRef BackendName) {
   const char *CurPtr = Buffer.getBufferStart();