Add a unit test for r259973.
llvm-svn: 260111
diff --git a/llvm/unittests/IR/MetadataTest.cpp b/llvm/unittests/IR/MetadataTest.cpp
index a745b23..b878f2c 100644
--- a/llvm/unittests/IR/MetadataTest.cpp
+++ b/llvm/unittests/IR/MetadataTest.cpp
@@ -2073,6 +2073,26 @@
EXPECT_TRUE(MD->getValue() == GV1.get());
}
+TEST_F(ValueAsMetadataTest, TempTempReplacement) {
+ // Create a constant.
+ ConstantAsMetadata *CI = ConstantAsMetadata::get(
+ ConstantInt::get(getGlobalContext(), APInt(8, 0)));
+
+ Metadata *Ops1[] = {CI};
+ auto Temp1 = MDTuple::getTemporary(Context, None);
+ auto Temp2 = MDTuple::getTemporary(Context, Ops1);
+
+ Metadata *Ops2[] = {Temp1.get()};
+ auto *N = MDTuple::get(Context, Ops2);
+
+ // Test replacing a temporary node with another temporary node.
+ Temp1->replaceAllUsesWith(Temp2.get());
+ EXPECT_EQ(N->getOperand(0), Temp2.get());
+
+ // Clean up Temp2 for teardown.
+ Temp2->replaceAllUsesWith(nullptr);
+}
+
TEST_F(ValueAsMetadataTest, CollidingDoubleUpdates) {
// Create a constant.
ConstantAsMetadata *CI = ConstantAsMetadata::get(