[llvm] [AMDGPU] Add GFX12 wave register names with WAVE_ prefix (PR #144352)

[Jay Foad via llvm-commits]

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@@ -27,21 +25,22 @@ template <size_t N>
 static StringRef getNameFromOperandTable(const CustomOperand (&Table)[N],
                                          unsigned Encoding,
                                          const MCSubtargetInfo &STI) {
-  auto isValidIndexForEncoding = [&](size_t Idx) {
-    return Idx < N && Table[Idx].Encoding == Encoding &&
-           !Table[Idx].Name.empty() &&
-           (!Table[Idx].Cond || Table[Idx].Cond(STI));
+  auto IsValid = [&](const CustomOperand &Entry) {
+    return Entry.Encoding == Encoding && !Entry.Name.empty() &&
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jayfoad wrote:

Name is never empty, is it?
```suggestion
    return Entry.Encoding == Encoding &&
```

https://github.com/llvm/llvm-project/pull/144352