[PATCH] D152544: [DAGCombine] Move setcc of freeze fold to brcond

[Nikita Popov via Phabricator via llvm-commits]

nikic created this revision.
nikic added reviewers: RKSimon, deadalnix.
Herald added subscribers: StephenFan, hiraditya.
Herald added a project: All.
nikic requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

This fold goes against the usual approach of pushing freeze into operands. The idea behind the fold is that if the setcc feeds into a brcond, the freeze can be dropped entirely.

Move the fold to brcond, where we can remove the freeze directly. This ensures that there can be no infinite combine loops due to conflicting transforms


https://reviews.llvm.org/D152544

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D152544.529973.patch
Type: text/x-patch
Size: 4898 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20230609/e6581136/attachment.bin>