llvm-project

Commit Graph

Author	SHA1	Message	Date
Nikita Popov	8cf5b69f69	[GuardWidening] Preserve MemorySSA As reported on https://bugs.llvm.org/show_bug.cgi?id=51020, the guard widening pass doesn't preserve MemorySSA, so it can no longer be scheduled in the same loop pass manager as LICM. However, the loop-schedule.ll test indicates that this is supposed to work. Fix this by preserving MemorySSA if available, as this seems to be trivial in this case (we only need to drop the memory access for the removed guards). Differential Revision: https://reviews.llvm.org/D108386	2021-08-19 20:23:17 +02:00
Arthur Eubanks	039fb7f68a	[NewPM][GuardWidening] Fix loop guard widening tests under NPM Reviewed By: ychen, asbirlea Differential Revision: https://reviews.llvm.org/D85394	2020-08-06 15:32:59 -07:00
Philip Reames	137995d8da	[GuardWidening] Wire up a NPM version of the LoopGuardWidening pass llvm-svn: 358704	2019-04-18 19:17:14 +00:00

Author

SHA1

Message

Date

Nikita Popov

8cf5b69f69

[GuardWidening] Preserve MemorySSA

As reported on https://bugs.llvm.org/show_bug.cgi?id=51020, the
guard widening pass doesn't preserve MemorySSA, so it can no
longer be scheduled in the same loop pass manager as LICM. However,
the loop-schedule.ll test indicates that this is supposed to work.

Fix this by preserving MemorySSA if available, as this seems to be
trivial in this case (we only need to drop the memory access for
the removed guards).

Differential Revision: https://reviews.llvm.org/D108386

2021-08-19 20:23:17 +02:00

Arthur Eubanks

039fb7f68a

[NewPM][GuardWidening] Fix loop guard widening tests under NPM

Reviewed By: ychen, asbirlea

Differential Revision: https://reviews.llvm.org/D85394

2020-08-06 15:32:59 -07:00

Philip Reames

137995d8da

[GuardWidening] Wire up a NPM version of the LoopGuardWidening pass

llvm-svn: 358704

2019-04-18 19:17:14 +00:00

3 Commits