[clang] [AArch64] Compact scalable-vector intrinsic maps (PR #202618)

[Andrzej Warzyński via cfe-commits]

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@@ -64,6 +64,21 @@ struct ARMVectorIntrinsicInfo {
   }
 };
 
+struct ARMScalableVectorIntrinsicInfo {
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banach-space wrote:

Please document `ARMScalableVectorIntrinsicInfo` and `ARMVectorIntrinsicInfo`. In particular, please make sure that the rationale for not re-using one `struct` is clear. There's too much code in this area with unclear rationale.

Also, `ARMScalableVectorIntrinsicInfo` -> `AArch64SVEAndSMEVectorIntrinsicInfo`? And `ARMVectorIntrinsicInfo` -> `ARMNeonVectorIntrinsicInfo`? That would be more self-documenting to me.

https://github.com/llvm/llvm-project/pull/202618