[llvm] [Xtensa] Implement volatile load/store. (PR #110292)

[Matt Arsenault via llvm-commits]

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@@ -1104,10 +1104,24 @@ XtensaTargetLowering::emitSelectCC(MachineInstr &MI,
 MachineBasicBlock *XtensaTargetLowering::EmitInstrWithCustomInserter(
     MachineInstr &MI, MachineBasicBlock *MBB) const {
   DebugLoc DL = MI.getDebugLoc();
+  const TargetInstrInfo &TII = *Subtarget.getInstrInfo();
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arsenm wrote:

Use XTensaInstrInfo. Also this might be a member already? 

https://github.com/llvm/llvm-project/pull/110292