[clang] [llvm] [AArch64] Add ability to list extensions enabled for a target (PR #95805)

[Tomas Matheson via cfe-commits]

================
@@ -1130,7 +1130,8 @@ INSTANTIATE_TEST_SUITE_P(
                  AArch64::AEK_MTE,         AArch64::AEK_SSBS,
                  AArch64::AEK_FP16,        AArch64::AEK_FP16FML,
                  AArch64::AEK_SB,          AArch64::AEK_JSCVT,
-                 AArch64::AEK_FCMA,        AArch64::AEK_PERFMON}),
+                 AArch64::AEK_FCMA,        AArch64::AEK_PERFMON,
+                 AArch64::AEK_ETE,         AArch64::AEK_AM}),
----------------
tmatheson-arm wrote:

I notice there are no tests for `--print-enabled-extensions` for individual CPUs. Can we now remove these from `TargetParserTest`, which is quite annoying to keep updated, and instead add lit tests for these CPUs which can be autogenerated? Maybe in a follow up PR.

https://github.com/llvm/llvm-project/pull/95805