tree e1c6ccf5e2262c2bb2c08449bdf1ab3cc638a937
parent ac96c8fd8535b50ab5ac158f521b0be8800df6fd
author Johannes Doerfert <johannes@jdoerfert.de> 1585796724 -0500
committer Johannes Doerfert <johannes@jdoerfert.de> 1585797647 -0500

[Attributor] Use the proper context instruction in genericValueTraversal

There was a TODO in genericValueTraversal to provide the context
instruction and due to the lack of it users that wanted one just used
something available. Unfortunately, using a fixed instruction is wrong
in the presence of PHIs so we need to update the context instruction
properly.

Reviewed By: uenoku

Differential Revision: https://reviews.llvm.org/D76870