[llvm-branch-commits] [llvm] [AMDGPU][MC] Replace shifted registers in CFI instructions (PR #164726)

[Matt Arsenault via llvm-branch-commits]

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@@ -1292,6 +1292,39 @@ void MCGenDwarfLabelEntry::Make(MCSymbol *Symbol, MCStreamer *MCOS,
       MCGenDwarfLabelEntry(Name, FileNumber, LineNumber, Label));
 }
 
+void MCCFIInstruction::replaceRegister(unsigned FromReg, unsigned ToReg) {
+  auto ReplaceReg = [=](unsigned &Reg) {
+    if (Reg == FromReg)
+      Reg = ToReg;
+  };
+  auto Visitor = makeVisitor(
+      [=](CommonFields &F) {
+        ReplaceReg(F.Register);
+        ReplaceReg(F.Register2);
+      },
+      [](EscapeFields &) {}, [](LabelFields &) {},
+      [=](RegisterPairFields &F) {
+        ReplaceReg(F.Register);
+        ReplaceReg(F.Reg1);
+        ReplaceReg(F.Reg2);
+      },
+      [=](VectorRegistersFields &F) {
+        ReplaceReg(F.Register);
+        for (auto &VRL : F.VectorRegisters)
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arsenm wrote:

no auto 

https://github.com/llvm/llvm-project/pull/164726