[clang] [Clang][AArch64] Fix checkArmStreamingBuiltin for 'sve-b16b16' (PR #109420)

[via cfe-commits]

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@@ -1802,9 +1854,29 @@ void SVEEmitter::createStreamingAttrs(raw_ostream &OS, ACLEKind Kind) {
 
     if (Def->isFlagSet(IsStreamingFlag))
       StreamingMap["ArmStreaming"].insert(Def->getMangledName());
-    else if (Def->isFlagSet(VerifyRuntimeMode))
+    else if (Def->isFlagSet(VerifyRuntimeMode)) {
+      // Verify that the target guards contain at least one feature that
+      // actually enables SVE or SME (explicitly, or implicitly). This is needed
+      // for the code in SemaARM.cpp (checkArmStreamingBuiltin) that checks
+      // whether the required runtime mode for an intrinsic matches with the
+      // given set of target features and function attributes.
+      //
+      // The feature lists below must match the disabled features in
+      // 'checkArmStreamingBuiltin'!
+      if (!Def->getSVEGuard().empty() &&
+          !verifyGuard(Def->getSVEGuard(),
+                       {"sve", "sve2", "sve2p1", "sve2-aes", "sve2-sha3",
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SpencerAbson wrote:

Yes, I believe so. 

https://github.com/llvm/llvm-project/pull/109420