Index: unittests/Support/TargetParserTest.cpp
===================================================================
--- unittests/Support/TargetParserTest.cpp
+++ unittests/Support/TargetParserTest.cpp
@@ -25,9 +25,9 @@
     "armv7a",    "armv7ve",      "armv7hl",     "armv7l",       "armv7-r",
     "armv7r",    "armv7-m",      "armv7m",      "armv7k",       "armv7s",
     "armv7e-m",  "armv7em",      "armv8-a",     "armv8",        "armv8a",
-    "armv8.1-a", "armv8.1a",     "armv8.2-a",   "armv8.2a",     "armv8-r",
-    "armv8r",    "armv8-m.base", "armv8m.base", "armv8-m.main", "armv8m.main",
-    "iwmmxt",    "iwmmxt2",      "xscale"};
+    "armv8.1-a", "armv8.1a",     "armv8.2-a",   "armv8.2a",     "armv8.3-a",
+    "armv8.3a",  "armv8-r",      "armv8r",      "armv8-m.base", "armv8m.base",
+    "armv8-m.main", "armv8m.main", "iwmmxt",    "iwmmxt2",      "xscale"};
 
 bool testARMCPU(StringRef CPUName, StringRef ExpectedArch,
                 StringRef ExpectedFPU, unsigned ExpectedFlags,
@@ -343,6 +343,9 @@
       testARMArch("armv8.2-a", "generic", "v8.2a",
                           ARMBuildAttrs::CPUArch::v8_A));
   EXPECT_TRUE(
+      testARMArch("armv8.3-a", "generic", "v8.3a",
+                          ARMBuildAttrs::CPUArch::v8_A));
+  EXPECT_TRUE(
       testARMArch("armv8-r", "cortex-r52", "v8r",
                           ARMBuildAttrs::CPUArch::v8_R));
   EXPECT_TRUE(
@@ -541,7 +544,7 @@
       "v6kz",   "v6z",   "v6zk",   "v6-m",  "v6m",  "v6sm", "v6s-m", "v7-a",
       "v7",     "v7a",   "v7ve",   "v7hl",  "v7l",  "v7-r", "v7r",   "v7-m",
       "v7m",    "v7k",   "v7s",    "v7e-m", "v7em", "v8-a", "v8",    "v8a",
-      "v8.1-a", "v8.1a", "v8.2-a", "v8.2a", "v8-r"};
+      "v8.1-a", "v8.1a", "v8.2-a", "v8.2a", "v8.3-a", "v8.3a", "v8-r"};
 
   for (unsigned i = 0; i < array_lengthof(Arch); i++) {
     std::string arm_1 = "armeb" + (std::string)(Arch[i]);
@@ -598,6 +601,7 @@
     case ARM::ArchKind::ARMV8A:
     case ARM::ArchKind::ARMV8_1A:
     case ARM::ArchKind::ARMV8_2A:
+    case ARM::ArchKind::ARMV8_3A:
       EXPECT_EQ(ARM::ProfileKind::A, ARM::parseArchProfile(ARMArch[i]));
       break;
     default:
@@ -727,6 +731,8 @@
                               ARMBuildAttrs::CPUArch::v8_A));
   EXPECT_TRUE(testAArch64Arch("armv8.2-a", "generic", "v8.2a",
                               ARMBuildAttrs::CPUArch::v8_A));
+  EXPECT_TRUE(testAArch64Arch("armv8.3-a", "generic", "v8.3a",
+                              ARMBuildAttrs::CPUArch::v8_A));
 }
 
 bool testAArch64Extension(StringRef CPUName, AArch64::ArchKind AK,