[llvm] RuntimeLibcalls: Move exception call config to tablegen (PR #151948)

[Matt Arsenault via llvm-commits]

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@@ -1100,19 +1122,25 @@ defvar DefaultRuntimeLibcallImpls_f128 =
     !filter(entry, AllDefaultRuntimeLibcallImpls,
             !match(!cast<string>(entry.Provides), "_F128"));
 
-defvar DefaultRuntimeLibcallImpls =
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arsenm wrote:

With the dag you can do set operations on them. The list versions are much more cumbersome and don't have a full set of operators. It all gets flattened in the final interpretation 

https://github.com/llvm/llvm-project/pull/151948