llvm-project

Commit Graph

Author	SHA1	Message	Date
Sam Parker	62fdb1f534	[DAGCombine] Skip PostInc combine with later users When decided whether to generate a post-inc load/store, look at the other memory nodes that use the same base address and, if any proceed the current node, then don't do the combine. The change only seems to be affecting the Arm backend, which I was surprised at, but it appears to fix a lot of our issues around MVE masked load/stores having to store a temporary address after an early post-increment on a shared base address. Differential Revision: https://reviews.llvm.org/D75847	2020-03-23 08:39:53 +00:00
Sam Parker	03756a4197	[ARM][MVE] Combine more extending masked loads For MVE, don't look at the users of the extending loads so that more as desirable for folding. Differential Revision: https://reviews.llvm.org/D74958	2020-02-24 07:50:15 +00:00

Author

SHA1

Message

Date

Sam Parker

62fdb1f534

[DAGCombine] Skip PostInc combine with later users

When decided whether to generate a post-inc load/store, look at the
other memory nodes that use the same base address and, if any proceed
the current node, then don't do the combine.
The change only seems to be affecting the Arm backend, which I was
surprised at, but it appears to fix a lot of our issues around MVE
masked load/stores having to store a temporary address after an early
post-increment on a shared base address.

Differential Revision: https://reviews.llvm.org/D75847

2020-03-23 08:39:53 +00:00

Sam Parker

03756a4197

[ARM][MVE] Combine more extending masked loads

For MVE, don't look at the users of the extending loads so that more
as desirable for folding.

Differential Revision: https://reviews.llvm.org/D74958

2020-02-24 07:50:15 +00:00

2 Commits