[PATCH] D40695: Improve loop unrolling performance on T99

[Stefan Teleman via Phabricator via llvm-commits]

steleman created this revision.
Herald added a subscriber: javed.absar.

This patch improves performance on T99 as shown here (libquantum 0.2.4):

https://docs.google.com/spreadsheets/d/1Lo1o2E1NjrpkwS7DvYYWsiVvPdd93h7KBaqeptMrZPY/edit?usp=sharing

By increasing the LoopMicroOpsBufferSize in the T99 Scheduler file, loop unrolling becomes more aggressive. This helps performance on T99.

Test case included.


Repository:
  rL LLVM

https://reviews.llvm.org/D40695

Files:
  lib/Target/AArch64/AArch64SchedThunderX2T99.td
  test/CodeGen/AArch64/loop-micro-op-buffer-size-t99.ll

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