llvm-project

Commit Graph

Author	SHA1	Message	Date
Philip Reames	3c6e419198	[SCEV] Properly guard reasoning about infinite loops being UB on mustprogress Noticed via code inspection. We changed the semantics of the IR when we added mustprogress, and we appear to have not updated this location. Differential Revision: https://reviews.llvm.org/D103834	2021-06-07 14:47:36 -07:00
Warren Ristow	d27b0c6247	[SCEV] Suppress hoisting insertion point of binops when unsafe InsertBinop tries to move insertion-points out of loops for expressions that are loop-invariant. This patch adds a new parameter, IsSafeToHost, to guard that hoisting. This allows callers to suppress that hoisting for unsafe situations, such as divisions that may have a zero denominator. This fixes PR38697. Differential Revision: https://reviews.llvm.org/D55232 llvm-svn: 360280	2019-05-08 18:50:07 +00:00

Author

SHA1

Message

Date

Philip Reames

3c6e419198

[SCEV] Properly guard reasoning about infinite loops being UB on mustprogress

Noticed via code inspection. We changed the semantics of the IR when we added mustprogress, and we appear to have not updated this location.

Differential Revision: https://reviews.llvm.org/D103834

2021-06-07 14:47:36 -07:00

Warren Ristow

d27b0c6247

[SCEV] Suppress hoisting insertion point of binops when unsafe

InsertBinop tries to move insertion-points out of loops for expressions
that are loop-invariant. This patch adds a new parameter, IsSafeToHost,
to guard that hoisting. This allows callers to suppress that hoisting
for unsafe situations, such as divisions that may have a zero
denominator.

This fixes PR38697.

Differential Revision: https://reviews.llvm.org/D55232

llvm-svn: 360280

2019-05-08 18:50:07 +00:00

2 Commits