[PATCH] D150384: [CodeGenPrepare] Fix for using outdated/corrupt LoopInfo

[Momchil Velikov via Phabricator via llvm-commits]

chill created this revision.
Herald added a subscriber: hiraditya.
Herald added a project: All.
chill requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Some transformation in CodeGenPrepare pass may create and/or delete
basic block, but they don't update the LoopInfo, so the LoopInfo may
end up containing dangling pointers and sometimes reused basic blocks,
which leads to "interesting" non-deterministic behaviour.

These transformations do not seem to alter the loop structure of the
function, and updating the loop info is quite straighforward.


https://reviews.llvm.org/D150384

Files:
  llvm/lib/CodeGen/CodeGenPrepare.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D150384.521365.patch
Type: text/x-patch
Size: 4281 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20230511/6557d0c7/attachment.bin>