[llvm] [llvm-readobj] Dump callgraph section info for ELF (PR #157499)

[James Henderson via llvm-commits]

================
@@ -0,0 +1,150 @@
+## Tests --call-graph-info prints information from call graph section.
+
+# REQUIRES: x86-registered-target
----------------
jh7370 wrote:

Could we convert the test input to use yaml2obj, instead of requiring x86? It looks like the file format is trivial enough that something like a YAML ELF input using ContentArray would be just as descriptive, whilst also allowing more precise control of everything.

https://github.com/llvm/llvm-project/pull/157499