[PATCH] D99588: [ARM] Allow v6m runtime loop unrolling

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: NickGuy, SjoerdMeijer, efriedma, simon_tatham, samparker.
Herald added subscribers: danielkiss, zzheng, hiraditya, kristof.beyls.
dmgreen requested review of this revision.
Herald added a project: LLVM.

This removes the restriction that only Thumb2 targets enable runtime loop unrolling, allowing it for Thumb1 only cores as well. The existing T2 heuristics are used (for the time being) to control when and how unrolling is performed.


https://reviews.llvm.org/D99588

Files:
  llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
  llvm/test/Transforms/LoopUnroll/ARM/loop-unrolling.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D99588.334117.patch
Type: text/x-patch
Size: 13113 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210330/c1ffb5fe/attachment.bin>