diff options
| author |  Jacques Pienaar <jpienaar@google.com> | 2018-02-28 00:07:55 -0800 |
|---|---|---|
| committer |  TensorFlower Gardener <gardener@tensorflow.org> | 2018-02-28 00:11:59 -0800 |
| commit | 503d9b522e28272e032bc45a10e3c0f21398a16e (patch) | |
| tree | 1c635afe83ac48ed0180f5975e1fa75dbf022124 /tensorflow/compiler/xla/service/hlo_constant_folding.cc | |
| parent | c38a16dbcc5de5fa5579a3e48ec12be316a2cb3f (diff) | |
[XLA:Evaluator] Handle while loop.
* Add while loop support to HloEvaluator;
* Add a max_loop_iteration argument to the interpreter's constructor to limit
the number of loop iterations that will be evaluated (or no bound if -1).
Maintain current constant propagation behavior by setting limit to 0 for evaluators used for CP.
PiperOrigin-RevId: 187287574
Diffstat (limited to 'tensorflow/compiler/xla/service/hlo_constant_folding.cc')
| -rw-r--r-- | tensorflow/compiler/xla/service/hlo_constant_folding.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tensorflow/compiler/xla/service/hlo_constant_folding.cc b/tensorflow/compiler/xla/service/hlo_constant_folding.cc index 53450991b6..35ecd4428d 100644 --- a/tensorflow/compiler/xla/service/hlo_constant_folding.cc +++ b/tensorflow/compiler/xla/service/hlo_constant_folding.cc @@ -35,7 +35,10 @@ limitations under the License. namespace xla { StatusOr<bool> HloConstantFolding::Run(HloModule* module) { - auto evaluator = MakeUnique<HloEvaluator>(); + // Limit the constant folding to 0 iterations to skip folding loops. This + // retains the behavior from before while loop support in HloEvaluator and may + // be revised. + auto evaluator = MakeUnique<HloEvaluator>(/*max_loop_iterations=*/0); XLA_VLOG_LINES(2, "HloConstantFolding::Run(), before:\n" + module->ToString()); |