[llvm] Add extended mnemonics (PR #97571)

[Kai Nacke via llvm-commits]

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@@ -973,6 +980,7 @@ let isAsCheapAsAMove = 1, isMoveImm = 1, isReMaterializable = 1 in {
   def IILF : UnaryRIL<"iilf", 0xC09, bitconvert, GR32, uimm32>;
   def IIHF : UnaryRIL<"iihf", 0xC08, bitconvert, GRH32, uimm32>;
 }
+def LFI : InstAlias<"lfi\t$R1, $RI1",(IILF GR32:$R1, uimm32:$RI1)>;
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redstar wrote:

```suggestion
def LFI : InstAlias<"lfi\t$R1, $RI1",(IILF GR32:$R1, uimm32:$RI1)>;
```
```suggestion
def LFI : InstAlias<"lfi\t$R1, $RI1", (IILF GR32:$R1, uimm32:$RI1)>;
```

https://github.com/llvm/llvm-project/pull/97571