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

[Matt Arsenault via llvm-commits]

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@@ -3074,9 +3074,10 @@ SDValue SITargetLowering::LowerFormalArguments(
   if (IsEntryFunc)
     allocateSystemSGPRs(CCInfo, MF, *Info, CallConv, IsGraphics);
 
-  auto &ArgUsageInfo =
-    DAG.getPass()->getAnalysis<AMDGPUArgumentUsageInfo>();
-  ArgUsageInfo.setFuncArgInfo(Fn, Info->getArgInfo());
+  if (DAG.getPass()) {
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arsenm wrote:

Comment why DAG.getPass would be null 

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