[PATCH] D122213: [RISCV] Enable MachineOutliner by default under -Oz for RISCV

[Wang Pengcheng via Phabricator via llvm-commits]

pcwang-thead created this revision.
pcwang-thead added reviewers: lewis-revill, asb, jrtc27, craig.topper, luismarques.
Herald added subscribers: s, VincentWu, luke957, StephenFan, vkmr, frasercrmck, evandro, apazos, sameer.abuasal, s.egerton, Jim, benna, psnobl, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, kito-cheng, niosHD, sabuasal, simoncook, johnrusso, rbar, hiraditya, arichardson, mgorny.
Herald added a project: All.
pcwang-thead requested review of this revision.
Herald added subscribers: llvm-commits, eopXD, MaskRay.
Herald added a project: LLVM.

Enable default outlining when the function has the minsize attribute.

`addr-label.ll` crashed after enabling this, so a barrier is added before
instruction selection as a workaround.

Additionally, we filter out instructions which contain unsafe things like
FrameIndex. Besides, we saw a failure caused by unwinding with incomplete
CFIs, so we can't outline CFI instructions when they are needed in EH.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122213

Files:
  llvm/lib/Target/RISCV/CMakeLists.txt
  llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfo.h
  llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
  llvm/test/CodeGen/RISCV/O3-pipeline.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D122213.417207.patch
Type: text/x-patch
Size: 5056 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220322/d6abcbdf/attachment.bin>