[llvm] [AArch64][SME] Conditionally do smstart/smstop (PR #77113)

[Matthew Devereau via llvm-commits]

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@@ -1291,8 +1291,8 @@ class AArch64TargetLowering : public TargetLowering {
 
   // Returns the runtime value for PSTATE.SM. When the function is streaming-
   // compatible, this generates a call to __arm_sme_state.
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MDevereau wrote:

Done

https://github.com/llvm/llvm-project/pull/77113