[llvm] [TableGen][GISel] Fix importing frameindex node (PR #120921)

[Matt Arsenault via llvm-commits]

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@@ -1248,10 +1244,6 @@ Expected<action_iterator> GlobalISelEmitter::importExplicitUseRenderer(
       DstMIBuilder.addRenderer<CopyRenderer>(Dst.getName());
       return InsertPt;
     }
-    if (Dst.getOperator()->getName() == "tframeindex") {
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arsenm wrote:

In principle we could have G_ pseudos that have a direct inline frame index, which would be the equivalent of TargetFrameIndex. I think we should treat timm/tfpimm/tframeindex consistently here, and pass them through as-is

https://github.com/llvm/llvm-project/pull/120921