[clang] [Clang][AArch64] Expose compatible SVE intrinsics with only +sme (PR #95787)

[Paul Walker via cfe-commits]

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@@ -1781,7 +1781,12 @@ void SVEEmitter::createStreamingAttrs(raw_ostream &OS, ACLEKind Kind) {
   uint64_t VerifyRuntimeMode = getEnumValueForFlag("VerifyRuntimeMode");
   uint64_t IsStreamingCompatibleFlag =
       getEnumValueForFlag("IsStreamingCompatible");
+
   for (auto &Def : Defs) {
+    assert((((Def->getGuard().contains("sve") +
+              Def->getGuard().contains("sme")) <= 1) ||
+            Def->isFlagSet(VerifyRuntimeMode)) &&
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paulwalker-arm wrote:

Given this is a build time error that represents a bug in `arm_sve.td`, do you think it's worth using `llvm_unreachable` rather than an assert?

https://github.com/llvm/llvm-project/pull/95787