[llvm-branch-commits] [TableGen] Slightly improve error location for a fatal error (PR #170790)

[Alexander Richardson via llvm-branch-commits]

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@@ -1316,11 +1316,18 @@ CodeGenRegBank::getOrCreateSubClass(const CodeGenRegisterClass *RC,
   return {&RegClasses.back(), true};
 }
 
-CodeGenRegisterClass *CodeGenRegBank::getRegClass(const Record *Def) const {
+CodeGenRegisterClass *CodeGenRegBank::getRegClass(const Record *Def,
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arichardson wrote:

Do you mean add an `assert(Def->isSubclassOf("RegisterClassLike"))` inside this function? It can't be RegisterClass yet since there are too many callers that don't correctly check yet. In the future that could be "RegisterClass" once all callers have been updated to avoid assertions.

https://github.com/llvm/llvm-project/pull/170790