RFR: 8333393: PhaseCFG::insert_anti_dependences can fail to raise LCAs and to add necessary anti-dependence edges [v2]

[Emanuel Peter]

On Wed, 8 Jan 2025 15:21:36 GMT, Daniel Lundén <dlunden at openjdk.org> wrote:

> we never add anti-dependence edges directly between the load and Phi nodes

Ah interesting. Do you know why we do not do that? Would that generate worse code? Because it seems to me that would add fewer edges, and would probably require a smaller traversal. What do you think?

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PR Review Comment: https://git.openjdk.org/jdk/pull/22852#discussion_r1908330988