[llvm] [AMDGPU] Enable volatile and non-temporal for loads to LDS (PR #153244)

[Matt Arsenault via llvm-commits]

================
@@ -3662,13 +3666,19 @@ bool AMDGPUInstructionSelector::selectGlobalLoadLds(MachineInstr &MI) const{
   if (isSGPR(Addr))
     MIB.addReg(VOffset);
 
-  MIB.add(MI.getOperand(4))  // offset
-     .add(MI.getOperand(5)); // cpol
+  MIB.add(MI.getOperand(4)); // offset
+
+  bool IsGFX12Plus = AMDGPU::isGFX12Plus(*Subtarget);
----------------
arsenm wrote:

```suggestion
  bool IsGFX12Plus = Subtarget->getGeneration() >= AMDGPUSubtarget::GFX12;
```

Should go through later and purge all of these AMDGPU::isGFX12Plus uses

https://github.com/llvm/llvm-project/pull/153244