diff options
| author |  Justin Lebar <jlebar@google.com> | 2017-11-02 19:12:40 -0700 |
|---|---|---|
| committer |  TensorFlower Gardener <gardener@tensorflow.org> | 2017-11-02 19:18:02 -0700 |
| commit | 58143d36c06c2b027ae7f9f4d51dadcdc1c66b74 (patch) | |
| tree | d206d37c80b4587346ede5a0e00c88afee9a227e /tensorflow/compiler/xla/service/while_loop_simplifier.h | |
| parent | 02608eadc34e5a606a95375ba078879145a55b7e (diff) | |
[XLA] Add dead tuple elem removal to WhileLoopSimplifier.
Specifically, if a while loop has tuple element that
- is not used by the while condition, and
- is not used by the while body, except to pass it along to the next
iteration of the loop,
then we can reshape the while loop's computations to eliminate this
tuple element.
PiperOrigin-RevId: 174413683
Diffstat (limited to 'tensorflow/compiler/xla/service/while_loop_simplifier.h')
| -rw-r--r-- | tensorflow/compiler/xla/service/while_loop_simplifier.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tensorflow/compiler/xla/service/while_loop_simplifier.h b/tensorflow/compiler/xla/service/while_loop_simplifier.h index 30774f2b3c..50dac32a4a 100644 --- a/tensorflow/compiler/xla/service/while_loop_simplifier.h +++ b/tensorflow/compiler/xla/service/while_loop_simplifier.h @@ -27,6 +27,8 @@ namespace xla { // - A while loop with static trip count of 0 is deleted. // - A while loops with static trip count of 1 is replaced by its body (sans // loop). +// - Elements of a while loop's tuple that the loop doesn't use are removed +// from the tuple. // class WhileLoopSimplifier : public HloPassInterface { public: |