================
@@ -1558,6 +1562,60 @@ class InProcessThinBackend : public ThinBackendProc {
return BackendThreadPool.getMaxConcurrency();
}
};
+
+/// This Backend will run ThinBackend process but throw away all the output
from
+/// the codegen. This class facilitates the first codegen round.
+class NoOutputThinBackend : public InProcessThinBackend {
----------------
NuriAmari wrote:
If I'm following correctly, it's not as if this backend really throws results
away, but it writes the produced object files into the scratch buffer rather
than to files. It also writes the optimized bitcode files to disk right?
I don't have a strong opinion, but maybe we could name the backend / adjust the
comment to reflect this. I wouldn't even be opposed to naming the backends
something specific to two-codegen rounds, as I don't see anyone using them for
other purposes.
Lastly just an idea: We could just hold the optimized bitcode in a similar
buffer in memory, rather than writing them to disk and reading them again
between rounds. Might run a bit faster.
https://github.com/llvm/llvm-project/pull/90933
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