4 Commits

Author SHA1 Message Date
Matthias Springer
47424f22d4 [mlir][transforms] TopologicalSort: Support ops from different blocks
This change allows analyzing ops from different block, in particular when used in programs that have `cf` branches.

Differential Revision: https://reviews.llvm.org/D135644
2022-10-13 10:36:06 +09:00
Kazu Hirata
0a706be316 [mlir] Don't include SetVector.h (NFC) 2022-09-17 13:36:16 -07:00
Matthias Springer
31fbdab376 [mlir][transforms] Add topological sort analysis
This change add a helper function for computing a topological sorting of a list of ops. E.g. this can be useful in transforms where a subset of ops should be cloned without dominance errors.

The analysis reuses the existing implementation in TopologicalSortUtils.cpp.

Differential Revision: https://reviews.llvm.org/D131669
2022-08-15 21:09:18 +02:00
Mogball
c8457eb532 [mlir][transforms] Add a topological sort utility and pass
This patch adds a topological sort utility and pass. A topological sort reorders
the operations in a block without SSA dominance such that, as much as possible,
users of values come after their producers.

The utility function sorts topologically the operation range in a given block
with an optional user-provided callback that can be used to virtually break cycles.
The toposort pass itself recursively sorts graph regions under the target op.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D125063
2022-05-16 20:47:30 +00:00