EXPECT_EQ(V, V2);
}
+typedef MetadataTest ValueAsMetadataTest;
+
+TEST_F(ValueAsMetadataTest, UpdatesOnRAUW) {
+ Type *Ty = Type::getInt1PtrTy(Context);
+ std::unique_ptr<GlobalVariable> GV0(
+ new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
+ auto *MD = ValueAsMetadata::get(GV0.get());
+ EXPECT_TRUE(MD->getValue() == GV0.get());
+ ASSERT_TRUE(GV0->use_empty());
+
+ std::unique_ptr<GlobalVariable> GV1(
+ new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
+ GV0->replaceAllUsesWith(GV1.get());
+ EXPECT_TRUE(MD->getValue() == GV1.get());
+}
+
+typedef MetadataTest TrackingMDRefTest;
+
+TEST_F(TrackingMDRefTest, UpdatesOnRAUW) {
+ Type *Ty = Type::getInt1PtrTy(Context);
+ std::unique_ptr<GlobalVariable> GV0(
+ new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
+ TypedTrackingMDRef<ValueAsMetadata> MD(ValueAsMetadata::get(GV0.get()));
+ EXPECT_TRUE(MD->getValue() == GV0.get());
+ ASSERT_TRUE(GV0->use_empty());
+
+ std::unique_ptr<GlobalVariable> GV1(
+ new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
+ GV0->replaceAllUsesWith(GV1.get());
+ EXPECT_TRUE(MD->getValue() == GV1.get());
+
+ // Reset it, so we don't inadvertently test deletion.
+ MD.reset();
+}
+
+TEST_F(TrackingMDRefTest, UpdatesOnDeletion) {
+ Type *Ty = Type::getInt1PtrTy(Context);
+ std::unique_ptr<GlobalVariable> GV(
+ new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage));
+ TypedTrackingMDRef<ValueAsMetadata> MD(ValueAsMetadata::get(GV.get()));
+ EXPECT_TRUE(MD->getValue() == GV.get());
+ ASSERT_TRUE(GV->use_empty());
+
+ GV.reset();
+ EXPECT_TRUE(!MD);
+}
+
TEST(NamedMDNodeTest, Search) {
LLVMContext Context;
ConstantAsMetadata *C =