[llvm] [CodeGen] Port selection dag isel to new pass manager (PR #83567)

[Arthur Eubanks via llvm-commits]

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@@ -81,6 +81,9 @@ class GCMachineCodeAnalysis : public MachineFunctionPass {
 
 PreservedAnalyses GCLoweringPass::run(Function &F,
                                       FunctionAnalysisManager &FAM) {
+  if (!F.hasGC())
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aeubanks wrote:

this should be committed separately

https://github.com/llvm/llvm-project/pull/83567