diff options
| -rw-r--r-- | llvm/unittests/IR/MetadataTest.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/unittests/IR/MetadataTest.cpp b/llvm/unittests/IR/MetadataTest.cpp index a745b235a38..b878f2c9062 100644 --- a/llvm/unittests/IR/MetadataTest.cpp +++ b/llvm/unittests/IR/MetadataTest.cpp @@ -2073,6 +2073,26 @@ TEST_F(ValueAsMetadataTest, UpdatesOnRAUW) { 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( |
