[all-commits] [llvm/llvm-project] 3dd61c: [LV] Fix MVE regression from #132190 (#141736)

[Sam Tebbs via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3dd61c1876446fb9db7c87b89006ad6d81f72f0d
      https://github.com/llvm/llvm-project/commit/3dd61c1876446fb9db7c87b89006ad6d81f72f0d
  Author: Sam Tebbs <samuel.tebbs at arm.com>
  Date:   2025-06-16 (Mon, 16 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    A llvm/test/Transforms/LoopVectorize/ARM/mve-reg-pressure-vmla.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/interleaved-masked-access.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/reg-usage-bf16.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/reg-usage-f16.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/reg-usage.ll

  Log Message:
  -----------
  [LV] Fix MVE regression from #132190 (#141736)

Register pressure was only considered if the vector bandwidth was being
maximised (chosen either by the target or user options), but #132190
inadvertently caused high pressure VFs to be pruned even when max
bandwidth wasn't enabled. This PR returns to the previous behaviour.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications