[llvm] [CGData] llvm-cgdata (PR #89884)

[Ellis Hoag via llvm-commits]

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@@ -0,0 +1,43 @@
+# Test merge a single object file into a cgdata
+
+RUN: split-file %s %t
+
+# Merge an object file that has no cgdata (__llvm_outline). It still produces a header only cgdata.
+RUN: llc -filetype=obj -mtriple arm64-apple-darwin %t/merge-empty.ll -o %t/merge-empty.o
+RUN: llvm-cgdata merge %t/merge-empty.o -o %t/merge-empty.cgdata
+RUN: llvm-cgdata show %t/merge-empty.cgdata | FileCheck %s --allow-empty --check-prefix EMPTY
+EMPTY-NOT: any
----------------
ellishg wrote:

```suggestion
RUN: llvm-cgdata show %t/merge-empty.cgdata | count 0
```

https://github.com/llvm/llvm-project/pull/89884