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| author | Chandler Carruth <chandlerc@gmail.com> | 2018-04-19 18:44:25 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2018-04-19 18:44:25 +0000 |
| commit | 32e62f9c5b85d481afbe277ecdb65476372b3411 (patch) | |
| tree | b83deb1fedad497e993029b6c918b3f9f52ae33b /llvm/lib/Transforms/Utils/LoopRotationUtils.cpp | |
| parent | 9bbd653084de43b3d1d80fec157798bc0d557598 (diff) | |
| download | llvm-32e62f9c5b85d481afbe277ecdb65476372b3411.zip llvm-32e62f9c5b85d481afbe277ecdb65476372b3411.tar.gz llvm-32e62f9c5b85d481afbe277ecdb65476372b3411.tar.bz2 | |
[PM/LoopUnswitch] Detect irreducible control flow within loops and skip unswitching non-trivial edges.
Summary:
This fixes the bug pointed out in review with non-trivial unswitching.
This also provides a basis that should make it pretty easy to finish
fleshing out a routine to scan an entire function body for irreducible
control flow, but this patch remains minimal for disabling loop
unswitch.
Reviewers: sanjoy, fedor.sergeev
Subscribers: mcrosier, hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D45754
llvm-svn: 330357
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopRotationUtils.cpp')
0 files changed, 0 insertions, 0 deletions