[PATCH] D55373: [LSR] Generate formulae to enable more indexed accesses

[Sam Parker via Phabricator via llvm-commits]

samparker added a comment.

Hi Hal,

I've attached a graph to show geomean performance results of a popular embedded benchmark suite running on Arm microcontroller. The suite is broken into five sub-suites and only three of which are affected by these changes. The large regression comes from a test which often exhibits bi-modal behaviour, so I could be getting unlucky. The whole suite comprises of several dozen tests and I only four of the benchmarks have minor regressions across the three runs. There's also some backend work that I need to do for Arm to get this optimised properly.
F7843292: backedge-results.png <https://reviews.llvm.org/F7843292>


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