[Unit][AArch64] Additional tests for target parsing

Add Exynos M2/M3 to extension check.

llvm-svn: 320762
diff --git a/llvm/unittests/Support/TargetParserTest.cpp b/llvm/unittests/Support/TargetParserTest.cpp
index fd0b2d5..dcef403 100644
--- a/llvm/unittests/Support/TargetParserTest.cpp
+++ b/llvm/unittests/Support/TargetParserTest.cpp
@@ -785,6 +785,10 @@
                                     AArch64::ArchKind::INVALID, "ras"));
   EXPECT_FALSE(testAArch64Extension("exynos-m1",
                                     AArch64::ArchKind::INVALID, "ras"));
+  EXPECT_FALSE(testAArch64Extension("exynos-m2",
+                                    AArch64::ArchKind::INVALID, "ras"));
+  EXPECT_FALSE(testAArch64Extension("exynos-m3",
+                                    AArch64::ArchKind::INVALID, "ras"));
   EXPECT_TRUE(testAArch64Extension("falkor",
                                    AArch64::ArchKind::INVALID, "rdm"));
   EXPECT_FALSE(testAArch64Extension("kryo",