[llvm] [RISCV] Add XSfmm pseudo instruction and vset* insertion support (PR #143068)

[Craig Topper via llvm-commits]

================
@@ -819,6 +856,8 @@ class VSETVLIInfo {
        << "TailAgnostic=" << (bool)TailAgnostic << ", "
        << "MaskAgnostic=" << (bool)MaskAgnostic << ", "
        << "SEWLMULRatioOnly=" << (bool)SEWLMULRatioOnly << "}";
+    OS << "TWiden=" << (unsigned)TWiden << ", ";
+    OS << "AltFmt=" << (bool)AltFmt << "}";
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topperc wrote:

```suggestion
       << "TWiden=" << (unsigned)TWiden << ", "
       << "AltFmt=" << (bool)AltFmt << "}";
```

https://github.com/llvm/llvm-project/pull/143068