[llvm] [BPF] Add support for asm gotol_or_nop and nop_or_gotol insns (PR #75110)

[Yingchi Long via llvm-commits]

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@@ -604,6 +604,32 @@ class BRANCH_LONG<BPFJumpOp Opc, string OpcodeStr, list<dag> Pattern>
   let BPFClass = BPF_JMP32;
 }
 
+class BRANCH_OR_NOP<BPFJumpOp Opc, string OpcodeStr, list<dag> Pattern>
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inclyc wrote:

these two insns are just special cases for `JMPL`, how about just extending(inherit) `BRANCH_LONG` and override `Inst{55-52}` fields?

https://github.com/llvm/llvm-project/pull/75110