[llvm] [LLVM][TableGen] Change CodeGenDAGPatterns to use const RecordKeeper (PR #108762)

[Matt Arsenault via llvm-commits]

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@@ -3198,14 +3198,10 @@ Record *CodeGenDAGPatterns::getSDNodeNamed(StringRef Name) const {
 
 // Parse all of the SDNode definitions for the target, populating SDNodes.
 void CodeGenDAGPatterns::ParseNodeInfo() {
-  std::vector<Record *> Nodes = Records.getAllDerivedDefinitions("SDNode");
   const CodeGenHwModes &CGH = getTargetInfo().getHwModes();
 
-  while (!Nodes.empty()) {
-    Record *R = Nodes.back();
+  for (const Record *R : reverse(Records.getAllDerivedDefinitions("SDNode")))
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arsenm wrote:

Is there any particular reason this would need to be done in reverse? 

https://github.com/llvm/llvm-project/pull/108762