[all-commits] [llvm/llvm-project] 5c9739: [SROA] Support load-only promotion with dynamic of...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5c97397c2c414d7ac8e43e87c6d2a79a87e802fb
      https://github.com/llvm/llvm-project/commit/5c97397c2c414d7ac8e43e87c6d2a79a87e802fb
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2025-04-17 (Thu, 17 Apr 2025)

  Changed paths:
    M llvm/lib/Transforms/Scalar/SROA.cpp
    M llvm/test/Transforms/SROA/readonlynocapture.ll

  Log Message:
  -----------
  [SROA] Support load-only promotion with dynamic offset loads (#135609)

If we do load-only promotion, it is okay if we leave some loads alone.
We only need to know all stores that affect a specific location.

As such, we can handle loads with unknown offset via the "escaped
read-only" code path.

This is something we already support in LICM load-only promotion, but
doing this in SROA is much better from a phase ordering perspective.

Fixes https://github.com/llvm/llvm-project/issues/134513.



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