[llvm] [AArch64][SME] Implement the SME ABI (ZA state management) in Machine IR (PR #149062)

[Benjamin Maxwell via llvm-commits]

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@@ -9001,6 +9009,9 @@ AArch64TargetLowering::LowerCall(CallLoweringInfo &CLI,
   if (MF.getTarget().Options.EmitCallGraphSection && CB && CB->isIndirectCall())
     CSInfo = MachineFunction::CallSiteInfo(*CB);
 
+  // Determine whether we need any streaming mode changes.
+  SMECallAttrs CallAttrs = getSMECallAttrs(MF.getFunction(), CLI);
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MacDue wrote:

nope (I've moved this code around quite a lot, so probably just a leftover)

https://github.com/llvm/llvm-project/pull/149062