[PATCH] D88549: [ARM][LowOverheadLoops] Iteration count liveness

[Sam Parker via Phabricator via llvm-commits]

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

Before deciding to insert a [W|D]LSTP, check that defining LR with the element count won't affect any other instructions that should be taking the iteration count.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D88549

Files:
  llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/it-block-chain-store.mir
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/mov-after-dlstp.mir
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/mov-operand.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D88549.295226.patch
Type: text/x-patch
Size: 9552 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20200930/bedeaadd/attachment.bin>