Address review comments

- add release note entry for Cortex-A320
- add AArch64CPUTestParams test
- add Linux host cpu name test

Author: stuij

clang/docs/ReleaseNotes.rst

@@ -711,6 +711,9 @@ X86 Support
 
 Arm and AArch64 Support
 ^^^^^^^^^^^^^^^^^^^^^^^
+
+- Support has been added for the following processors (command-line identifiers in parentheses):
+  - Arm Cortex-A320 (``cortex-a320``)
 - For ARM targets, cc1as now considers the FPU's features for the selected CPU or Architecture.
 - The ``+nosimd`` attribute is now fully supported for ARM. Previously, this had no effect when being used with
   ARM targets, however this will now disable NEON instructions being generated. The ``simd`` option is

llvm/unittests/TargetParser/Host.cpp

@@ -72,6 +72,9 @@ Serial          : 0000000000000000
 }
 
 TEST(getLinuxHostCPUName, AArch64) {
+  EXPECT_EQ(sys::detail::getHostCPUNameForARM("CPU implementer : 0x41\n"
+                                              "CPU part        : 0xd8f"),
+            "cortex-a320");
   EXPECT_EQ(sys::detail::getHostCPUNameForARM("CPU implementer : 0x41\n"
                                               "CPU part        : 0xd03"),
             "cortex-a53");

llvm/unittests/TargetParser/TargetParserTest.cpp

@@ -1085,6 +1085,7 @@ INSTANTIATE_TEST_SUITE_P(
     AArch64CPUTests, AArch64CPUTestFixture,
     ::testing::Values(AArch64CPUTestParams("cortex-a34", "armv8-a"),
                       AArch64CPUTestParams("cortex-a35", "armv8-a"),
+                      AArch64CPUTestParams("cortex-a320", "armv9.2-a"),
                       AArch64CPUTestParams("cortex-a53", "armv8-a"),
                       AArch64CPUTestParams("cortex-a55", "armv8.2-a"),
                       AArch64CPUTestParams("cortex-a510", "armv9-a"),