forked from llvm/llvm-project
-
Notifications
You must be signed in to change notification settings - Fork 55
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[mlir] Fix infinite recursion in alias initializer
The alias initializer keeps a list of child indices around. When an alias is then marked as non-deferrable, all children are also marked non-deferrable. This is currently done naively which leads to an infinite recursion if using mutable types or attributes containing a cycle. This patch fixes this by adding an early return if the alias is already marked non-deferrable. Since this function is the only way to mark an alias as non-deferrable, it is guaranteed that if it is marked non-deferrable, all its children are as well, and it is not required to walk all the children. This incidentally makes the non-deferrable marking also `O(n)` instead of `O(n^2)` (although not performance sensitive obviously). Differential Revision: https://reviews.llvm.org/D158932
- Loading branch information
Showing
6 changed files
with
98 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters