[llvm] TableGen: Generate enum for runtime libcall implementations (PR #144973)

[Sam Clegg via llvm-commits]

sbc100 wrote:

Yup this patch fixes it:

```
--- a/llvm/include/llvm/IR/RuntimeLibcalls.h
+++ b/llvm/include/llvm/IR/RuntimeLibcalls.h
@@ -90,8 +90,7 @@ struct RuntimeLibcallsInfo {
   }
 
   ArrayRef<RTLIB::LibcallImpl> getLibcallImpls() const {
-    // Trim Unsupported from the start
-    return ArrayRef(LibcallImpls).drop_front();
+    return LibcallImpls;
   }
 
   /// Get the comparison predicate that's to be used to test the result of the
```

https://github.com/llvm/llvm-project/pull/144973