[clang] [CIR][NEON] Add lowering support for `vceqzd_s64` (PR #179779)

[Andrzej Warzyński via cfe-commits]

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@@ -406,6 +406,8 @@ def calculate_arch_features(arch_string):
 if config.have_llvm_driver:
     config.available_features.add("llvm-driver")
 
+if config.clang_enable_cir:
+    config.available_features.add("cir")
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banach-space wrote:

Also, `cir-enabled` will be easier to grep for 👍🏻 

https://github.com/llvm/llvm-project/pull/179779