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

[Sergei Barannikov via llvm-commits]

================
@@ -1100,19 +1122,25 @@ defvar DefaultRuntimeLibcallImpls_f128 =
     !filter(entry, AllDefaultRuntimeLibcallImpls,
             !match(!cast<string>(entry.Provides), "_F128"));
 
-defvar DefaultRuntimeLibcallImpls =
+// FIXME: Ideally we would just use dags everywhere, but for the
+// arm64ec case we need iterable lists so we can add the # prefix
+defvar DefaultRuntimeLibcallImplsList =
 !listremove(
   !listremove(
     !listremove(AllDefaultRuntimeLibcallImpls, Int128RTLibcalls),
                 DefaultRuntimeLibcallImpls_f80),
                 DefaultRuntimeLibcallImpls_ppcf128);
 
+defvar DefaultRuntimeLibcallImpls = (add DefaultRuntimeLibcallImplsList, ExceptionModelCalls);
+
 /// Default set of libcall impls for 32-bit architectures.
-defvar DefaultLibcallImpls32 = DefaultRuntimeLibcallImpls;
+defvar DefaultLibcallImpls32List = DefaultRuntimeLibcallImplsList;
+defvar DefaultLibcallImpls32 = (add DefaultRuntimeLibcallImpls);
 
 /// Default set of libcall impls for 64-bit architectures.
-defvar DefaultLibcallImpls64 = !listconcat(DefaultRuntimeLibcallImpls,
-                                           Int128RTLibcalls);
+defvar DefaultLibcallImpls64List = !listconcat(DefaultRuntimeLibcallImplsList,
+                                               Int128RTLibcalls);
+defvar DefaultLibcallImpls64 = (add DefaultLibcallImpls32List);
----------------
s-barannikov wrote:

Should it be

```suggestion
defvar DefaultLibcallImpls64 = (add DefaultLibcallImpls64List);
```

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