[llvm] GlobalISel: Stop using TPC to check if GlobalISelAbort is enabled (PR #169917)

[Matt Arsenault via llvm-commits]

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@@ -511,7 +511,7 @@ class RegBankSelect : public MachineFunctionPass {
   Mode OptMode;
 
   /// Current target configuration. Controls how the pass handles errors.
-  const TargetPassConfig *TPC;
+  bool GlobalISelAbortNotEnabled;
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arsenm wrote:

Inverted variable name is confusing, can you rename GlobalISelAbortNotEnabled or just pass through the enum?

https://github.com/llvm/llvm-project/pull/169917