[llvm] [Object] Beginnings of SFrame parser and dumper (PR #147294)

[James Henderson via llvm-commits]

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@@ -0,0 +1,118 @@
+## Check parsing and dumping of the SFrame header.
+# RUN: yaml2obj --docnum=1 %s -o %t.1
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jh7370 wrote:

I'm okay with what you've done, because it avoids a circular testing dependency, but if you're planning on doing heavy sframe development, I'd strongly recommend adding yaml2obj support for it directly, so you don't have to rely on hex data in your YAML.

https://github.com/llvm/llvm-project/pull/147294