[clang] [llvm] [AArch64] Introduce new armv9.6 features (PR #111677)

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@@ -522,6 +522,39 @@ def FeatureTLBIW : ExtensionWithMArch<"tlbiw", "TLBIW", "FEAT_TLBIW",
 //  Armv9.6 Architecture Extensions
 //===----------------------------------------------------------------------===//
 
+def FeatureCMPBR : ExtensionWithMArch<"cmpbr", "CMPBR", "FEAT_CMPBR",
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CarolineConcatto wrote:

Hey Marian, 
If the requirements are not going to block us with the implementation of the instructions. 
I was thinking if maybe it is not better to remove all the requirements from this patch and we address this when all the dpISA is already upstream.


https://github.com/llvm/llvm-project/pull/111677