1 files changed, 16 insertions, 0 deletions
diff --git a/lldb/unittests/Utility/ArchSpecTest.cpp b/lldb/unittests/Utility/ArchSpecTest.cpp
index 318626d9fea..0186ff05ead 100644
--- a/lldb/unittests/Utility/ArchSpecTest.cpp
+++ b/lldb/unittests/Utility/ArchSpecTest.cpp
@@ -157,8 +157,13 @@ TEST(ArchSpecTest, MergeFrom) {
     ArchSpec A("aarch64");
     ArchSpec B("aarch64--linux-android");
 
+    ArchSpec C("arm64_32");
+    ArchSpec D("arm64_32--watchos");
+
     EXPECT_TRUE(A.IsValid());
     EXPECT_TRUE(B.IsValid());
+    EXPECT_TRUE(C.IsValid());
+    EXPECT_TRUE(D.IsValid());
 
     EXPECT_EQ(llvm::Triple::ArchType::aarch64, B.GetTriple().getArch());
     EXPECT_EQ(llvm::Triple::VendorType::UnknownVendor,
@@ -174,6 +179,17 @@ TEST(ArchSpecTest, MergeFrom) {
     EXPECT_EQ(llvm::Triple::OSType::Linux, A.GetTriple().getOS());
     EXPECT_EQ(llvm::Triple::EnvironmentType::Android,
               A.GetTriple().getEnvironment());
+
+    EXPECT_EQ(llvm::Triple::ArchType::aarch64_32, D.GetTriple().getArch());
+    EXPECT_EQ(llvm::Triple::VendorType::UnknownVendor,
+              D.GetTriple().getVendor());
+    EXPECT_EQ(llvm::Triple::OSType::WatchOS, D.GetTriple().getOS());
+
+    C.MergeFrom(D);
+    EXPECT_EQ(llvm::Triple::ArchType::aarch64_32, C.GetTriple().getArch());
+    EXPECT_EQ(llvm::Triple::VendorType::UnknownVendor,
+              C.GetTriple().getVendor());
+    EXPECT_EQ(llvm::Triple::OSType::WatchOS, C.GetTriple().getOS());
   }
   {
     ArchSpec A, B;