[clang] [Clang][SME2] Add multi-vector add/sub builtins (PR #69725)

[Sander de Smalen via cfe-commits]

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@@ -1180,6 +1194,32 @@ void SVEEmitter::createIntrinsic(
   }
 }
 
+void SVEEmitter::createCoreHeaderIntrinsics(raw_ostream &OS,
+                                            SVEEmitter &Emitter,
+                                            ACLEKind Kind) {
+  SmallVector<std::unique_ptr<Intrinsic>, 128> Defs;
+  std::vector<Record *> RV = Records.getAllDerivedDefinitions("Inst");
+  for (auto *R : RV)
+    createIntrinsic(R, Defs);
+
+  // Sort intrinsics in header file by following order/priority:
+  // - Architectural guard (i.e. does it require SVE2 or SVE2_AES)
+  // - Class (is intrinsic overloaded or not)
+  // - Intrinsic name
+  std::stable_sort(
+      Defs.begin(), Defs.end(), [](const std::unique_ptr<Intrinsic> &A,
+                                   const std::unique_ptr<Intrinsic> &B) {
+        auto ToTuple = [](const std::unique_ptr<Intrinsic> &I) {
+          return std::make_tuple(I->getGuard(), (unsigned)I->getClassKind(), I->getName());
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sdesmalen-arm wrote:

80char formatting.

https://github.com/llvm/llvm-project/pull/69725