[llvm] AMDGPU/GlobalISel: Add regbanklegalize rules for load and store (PR #153176)

[Pierre van Houtryve via llvm-commits]

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@@ -744,6 +769,9 @@ void RegBankLegalizeHelper::lower(MachineInstr &MI,
     }
     break;
   }
+  case WidenMMOToS32: {
+    return widenMMOToS32(cast<GAnyLoad>(MI));
+  }
----------------
Pierre-vh wrote:

```suggestion
  case WidenMMOToS32:
    return widenMMOToS32(cast<GAnyLoad>(MI));
```

https://github.com/llvm/llvm-project/pull/153176