[llvm] [AArch64] NFC: Simplify the smstart/smstop pseudo. (PR #85067)

[Kerry McLaughlin via llvm-commits]

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@@ -987,7 +987,7 @@ AArch64ExpandPseudo::expandCondSMToggle(MachineBasicBlock &MBB,
   // Expand the pseudo into smstart or smstop instruction. The pseudo has the
   // following operands:
   //
-  //   MSRpstatePseudo <za|sm|both>, <0|1>, pstate.sm, expectedval, <regmask>
+  //   MSRpstatePseudo <za|sm|both>, <0|1>, pstate.sm, condition, <regmask>
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kmclaughlin-arm wrote:

Looking at the changes to the inputs to MSRpstatePseudo in AArch64SMEInstrInfo.td, should `pstate.sm` be removed here? 

https://github.com/llvm/llvm-project/pull/85067