[PATCH] D106762: [AArch64][GlobalISel] Enable some select combines after legalization

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added reviewers: paquette, jroelofs.
aemerson added a project: LLVM.
Herald added subscribers: danielkiss, hiraditya, kristof.beyls, rovka.
aemerson requested review of this revision.

The legalizer generates selects for some operations, which can have constant condition values, resulting in lots of dead code if it's not folded away.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106762

Files:
  llvm/lib/Target/AArch64/AArch64Combine.td
  llvm/test/CodeGen/AArch64/GlobalISel/arm64-atomic-128.ll
  llvm/test/CodeGen/AArch64/GlobalISel/postlegalizercombiner-select.mir
  llvm/test/CodeGen/AArch64/fold-global-offsets.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D106762.361492.patch
Type: text/x-patch
Size: 7238 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210725/e5e789e3/attachment.bin>