[all-commits] [llvm/llvm-project] d65fec: [ARM] Set preferred function alignment

NickGuy-Arm via All-commits all-commits at lists.llvm.org
Wed Aug 16 09:33:44 PDT 2023

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d65feccb126226e6f7805a01d759ca1c9ce28237
  Author: Nicholas Guy <nicholas.guy at arm.com>
  Date:   2023-08-16 (Wed, 16 Aug 2023)

  Changed paths:
    M llvm/lib/Target/ARM/ARMISelLowering.cpp
    M llvm/lib/Target/ARM/ARMSubtarget.h
    A llvm/test/CodeGen/ARM/preferred-function-alignment.ll

  Log Message:
  [ARM] Set preferred function alignment

Aligning functions yields small performance gains on
embedded cores, moreso with numerous small function calls.
Similar to aligning loops, if the function can fit within
a single cache line then the performance overhead of
fetching more instructions can be limited.

Differential Revision: https://reviews.llvm.org/D157514

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