[PATCH] D154584: Improve collectEphemeralValues and use it in CodeGenPrepare

[Serguei Katkov via Phabricator via llvm-commits]

skatkov added reviewers: hfinkel, chandlerc, spatel.
skatkov added a comment.

ping.

I wonder whether it will easier to review if I split this patch into three one:

1. Use wouldInstructionBeTriviallyDead instead of checking side-effect and terminator only to extend the scope of collecting ephemeral values
2. Use CodeMetrics utility in CodeGenPrepare
3. Extend the algorithm for collecting ephemeral values by checking cycles (induction variable case)

I'd like to make a progress on this, so I need feedback.


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https://reviews.llvm.org/D154584