[RGT][ProfileData] Correct a test assertion

[probinson]

Summary

Found by the Rotten Green Tests project.

[probinson]

It's possible that the InstantiationGroups result is not supposed to be empty; in which case, something deeper is wrong, and I can abandon this patch and file a bug. Let me know.

[vsk]

The test update looks correct to me: the expansion regions occur in the file "main", not "expanded". @ikudrin, wdyt?

[probinson]

Ping

[vsk]

Looks good to me.

llvm/unittests/ProfileData/CoverageMappingTest.cpp

TEST_P(CoverageMappingTest, dont_detect_false_instantiations) {
   startFunction("bar", 0x2345);
   addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
   addExpansionCMR("main", "expanded", 9, 1, 9, 5);
 
   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 
   std::vector<InstantiationGroup> InstantiationGroups =
       LoadedCoverage->getInstantiationGroups("expanded");
-  for (const auto &Group : InstantiationGroups)
-    ASSERT_EQ(Group.size(), 1U);
+  ASSERT_TRUE(InstantiationGroups.empty());
 }
 
 TEST_P(CoverageMappingTest, load_coverage_for_expanded_file) {
   ProfileWriter.addRecord({"func", 0x1234, {10}}, Err);
 
   startFunction("func", 0x1234);
   addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
   addExpansionCMR("main", "expanded", 4, 1, 4, 5);