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

[Craig Topper via llvm-commits]

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@@ -2546,6 +2546,16 @@ bool MIParser::parseCFIOperand(MachineOperand &Dest) {
     CFIIndex = MF.addFrameInst(MCCFIInstruction::createLLVMDefAspaceCfa(
         nullptr, Reg, Offset, AddressSpace, SMLoc()));
     break;
+  case MIToken::kw_cfi_llvm_reg_offset: {
+    Register FrameReg;
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topperc wrote:

I fixed the parseCFIRegister interface so I think this should be `unsigned` now.

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