[llvm] [AArch64] Don't inline streaming Fn if caller has no SVE (PR #150595)

[Benjamin Maxwell via llvm-commits]

================
@@ -280,16 +280,22 @@ bool AArch64TTIImpl::areInlineCompatible(const Function *Caller,
   if (CallAttrs.callee().isNewZA() || CallAttrs.callee().isNewZT0())
     return false;
 
+  const TargetMachine &TM = getTLI()->getTargetMachine();
+  const FeatureBitset &CallerBits =
+      TM.getSubtargetImpl(*Caller)->getFeatureBits();
+
+  // Cannot inline a streaming function into a non-streaming function,
+  // if the caller has no SVE.
+  if (CallAttrs.requiresSMChange() && !CallerBits.test(AArch64::FeatureSVE))
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MacDue wrote:

I guess in the general case this the features being compatible is checked by `(EffectiveCallerBits & EffectiveCalleeBits) == EffectiveCalleeBits`  (below this check). But streaming mode is not a target feature (just a function attribute), so is not included in this check. 

https://github.com/llvm/llvm-project/pull/150595