[llvm] [MC][AsmPrinter] Introduce llvm_reg_offset pseudo cfi instruction. (PR #125104)

[Michael Maitland via llvm-commits]

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@@ -265,6 +265,8 @@ void CFIInstrInserter::calculateOutgoingCFAInfo(MBBCFAInfo &MBBInfo) {
       case MCCFIInstruction::OpLabel:
       case MCCFIInstruction::OpValOffset:
         break;
+      case MCCFIInstruction::OpLLVMRegOffset:
+        llvm_unreachable("Can't handle llvm_reg_offset yet!");
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michaelmaitland wrote:

What is the impact of not handling this yet?

https://github.com/llvm/llvm-project/pull/125104