tree 43dfcf322ddd7fe501326513558bebb7589e8633
parent fb7135ec5239a45b43fae6206f7409fd77c50b9f
author Mircea Trofin <mtrofin@google.com> 1743642948 -0700
committer GitHub <noreply@github.com> 1743642948 -0700
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[ctxprof] Option to move a whole tree to its own module (#133992)

Modules may contain a mix of functions that participate or don't participate in callgraphs covered by a contextual profile. We currently have been importing all the functions under a context root in the module defining that root, but if the other functions there are covered by flat profiles, the result is difficult to reason about.

This patch allows moving everything under a context root (and that root) in its own module. For now, we expect a module with a filename matching the GUID of the function be present in the set of modules known by the linker. This mechanism can be improved in a later patch.

Subsequent patches will handle implementing "move" instead of "import" semantics for the root function (because we want to make sure only one version of the root exists - so the optimizations we perform are actually the ones being observed at runtime).