llvm-project

Commit Graph

Author	SHA1	Message	Date
Max Kazantsev	c413a8a8ec	[LoopLoadElim] Filter away candidates that stop being AddRecs after loop versioning. PR47457 The test in PR47457 demonstrates a situation when candidate load's pointer's SCEV is no loger a SCEVAddRec after loop versioning. The code there assumes that it is always a SCEVAddRec and crashes otherwise. This patch makes sure that we do not consider candidates for which this requirement is broken after the versioning. Differential Revision: https://reviews.llvm.org/D87355 Reviewed By: asbirlea	2020-09-10 13:30:31 +07:00
Max Kazantsev	37a7c0a007	[Test] Add failing test for pr47457	2020-09-09 15:45:35 +07:00

Author

SHA1

Message

Date

Max Kazantsev

c413a8a8ec

[LoopLoadElim] Filter away candidates that stop being AddRecs after loop versioning. PR47457

The test in PR47457 demonstrates a situation when candidate load's pointer's SCEV
is no loger a SCEVAddRec after loop versioning. The code there assumes that it is
always a SCEVAddRec and crashes otherwise.

This patch makes sure that we do not consider candidates for which this requirement
is broken after the versioning.

Differential Revision: https://reviews.llvm.org/D87355
Reviewed By: asbirlea

2020-09-10 13:30:31 +07:00

Max Kazantsev

37a7c0a007

[Test] Add failing test for pr47457

2020-09-09 15:45:35 +07:00

2 Commits