[clang] [AArch64] Implement reinterpret builtins for SVE vector tuples (PR #69598)

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@@ -383,6 +381,20 @@ class SVEEmitter {
                        SmallVectorImpl<std::unique_ptr<Intrinsic>> &Out);
 };
 
+const std::array<SVEEmitter::ReinterpretTypeInfo, 12> SVEEmitter::Reinterprets =
+    {{{SVEType("c"), "s8"},
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CarolineConcatto wrote:

Can we change this to be SVEType("c", 'd'), so we don't need to change in the class in line 76.
We can still keep SVEType(StringRef TS, char CharMod, unsigned NumVectors = 1).
My line of thought is to reduce the changes in this patch

https://github.com/llvm/llvm-project/pull/69598