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18 Commits

Author SHA1 Message Date
Robert Suderman 233f1a8a1a Folders for mhlo.compare 
Constant evaluation of compare for the case where inputs are either the same
variable or the values are constant.

PiperOrigin-RevId: 333342328
 2020-09-23 12:03:48 -07:00
Hanhan Wang 1800f44a29 Add sqrt folder. 
PiperOrigin-RevId: 331974344
 2020-09-16 04:04:09 -07:00
Robert Suderman dff98f8cd5 Folder for mhlo.negate 
PiperOrigin-RevId: 331592342
 2020-09-14 11:38:44 -07:00
Robert Suderman 81d51d810b Bitwise and/or/xor folders 
Includes both and/or/xor on same inputs, constant all ones/zeros single arg
folder, and constant input folders.

PiperOrigin-RevId: 330610858
 2020-09-08 16:27:13 -07:00
A. Unique TensorFlower 73b4861f2c Canonicalize mhlo.gather to mhlo.slice if it has a single set of constant indices 
PiperOrigin-RevId: 330380755
 2020-09-07 07:28:46 -07:00
Robert Suderman 7c93352a40 Scalar / Trivial folding for mhlo.select 
This covers the case where the predicate is a splat or the on_true/on_false
values are the same.

PiperOrigin-RevId: 329622785
 2020-09-01 18:34:12 -07:00
A. Unique TensorFlower a622bf479b Fix mhlo::SliceOp::fold to not crash on unknown shapes 
PiperOrigin-RevId: 329504383
 2020-09-01 07:37:36 -07:00
Uday Bondhugula 94296bb7ec PR #42509: [MLIR] Add folder for mhlo get_dimension_size 
Imported from GitHub PR https://github.com/tensorflow/tensorflow/pull/42509

Add folder for mhlo GetDimensionSizeOp (`mhlo.get_dimension_size`).
`get_dimension_size` folds to a constant when the corresponding tensor
dimension size is statically known / constant.
Copybara import of the project:

--
5994915525ec2e932125aa1f133ce2260ba100af by Uday Bondhugula <uday@polymagelabs.com>:

[MLIR] Add folder for mhlo get_dimension_size

Add folder for mhlo GetDimensionSizeOp. get_dimension_size folds to a
constant when the corresponding tensor dimension size is statically
known / constant.

COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/tensorflow/pull/42509 from polymage-labs:get_dimension_size_fold 5994915525ec2e932125aa1f133ce2260ba100af
PiperOrigin-RevId: 328222517
 2020-08-24 15:36:30 -07:00
Uday Bondhugula 282dba6d38 PR #42508: [MLIR] Erase dead lmhlo.constant ops 
Imported from GitHub PR https://github.com/tensorflow/tensorflow/pull/42508

An lmhlo.constant op on an memref that is locally allocated and with
no users other than dealloc's can be deleted. Add a canonicalization
pattern for this.
Copybara import of the project:

--
8758c409a15f567e7cb8e1077faa020f5705c85a by Uday Bondhugula <uday@polymagelabs.com>:

[MLIR] Erase dead lmhlo.constant ops

An lmhlo.constant op on an memref that is locally allocated and with
no other users (other than dealloc's) can be deleted. Add a
canonicalization patter for this.

COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/tensorflow/pull/42508 from polymage-labs:lhlo_constant_erase 8758c409a15f567e7cb8e1077faa020f5705c85a
PiperOrigin-RevId: 328042416
 2020-08-23 12:28:54 -07:00
Jacques Pienaar 5dac76f4af Add chlo.constant_like op which splats a constant to shape of operand 
This allows specifying a constant whose shape is only known when operand shape is. Also use it to update tf.Acos legalization.

PiperOrigin-RevId: 325860604
 2020-08-11 14:54:48 -07:00
Andy Ly c340367702 Add canonicalization for unpacking and repacking the same tuple (e.g. tuple -> get_tuple_element -> tuple). 
These unpacking and repacking of tuples may be generated when modifying tuple arguments or results.

PiperOrigin-RevId: 325162694
 2020-08-05 21:38:02 -07:00
Thomas Joerg 739758f9cc Integrate LLVM at llvm/llvm-project@eed333149d 
Updates LLVM usage to match
[eed333149d17](https://github.com/llvm/llvm-project/commit/eed333149d17)

PiperOrigin-RevId: 323354988
 2020-08-03 19:27:25 -07:00
Stephan Herhut 7a6adc6a84 Add canonicalization patterns for dynamic_broadcast_in_dim where the target shape is the shape of the operand. 
PiperOrigin-RevId: 321312182
 2020-07-30 22:34:06 +00:00
Robert Suderman 06ae59074f Fold xla iota across a 1-length dimension into a zero value 
Iota across length-1 is just a constant. Fold into it.

PiperOrigin-RevId: 320443468
 2020-07-30 22:33:43 +00:00
Uday Bondhugula de0578b4f9 PR #40745: [MLIR] Add constant folder for xla_hlo.broadcast_in_dim op 
Imported from GitHub PR https://github.com/tensorflow/tensorflow/pull/40745

Fold broadcast_in_dim op if the operand is the result of a tensor splat.
Copybara import of the project:

--
26c9f631448b8d6ffd20ece39ea8d4132b5550c7 by Uday Bondhugula <uday@polymagelabs.com>:

[MLIR] Add constant folder for xla_hlo.broadcast_in_dim op

Fold broadcast_in_dim op if the operand is the result of a tensor
splat.

COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/tensorflow/pull/40745 from polymage-labs:broadcast_in_dim_fold 26c9f631448b8d6ffd20ece39ea8d4132b5550c7
PiperOrigin-RevId: 320365164
 2020-07-30 22:33:34 +00:00
Robert Suderman e1651b6090 Canonicalize multidimensional iota to use broadcast 
There is no reason to have a multidimensional iota for codegen.
This should be canonicalized to a single dimensional iota followed
by a broadcast. Changing iota to on a single dimension  and a broadcast
substantially simplifies implementing iota operations.

PiperOrigin-RevId: 320095470
 2020-07-30 22:32:54 +00:00
Mehdi Amini 8900222fed Rename `xla_hlo` dialect to `mhlo` 
This is part of the current refactoring of the HLO related dialect.
`xla_hlo` will be reintroduced in a new form later.

PiperOrigin-RevId: 319916753
 2020-07-30 22:32:50 +00:00
Mehdi Amini fa057cc0bc Move HLO tests to `third_party/tensorflow/compiler/mlir/hlo/` 
Also add a localized `mlir-hlo-opt` binary for the testing of
tensorflow/compiler/mlir/hlo/... ; this directory is intended to be self-contained
and depend only on MLIR.

PiperOrigin-RevId: 319878984
 2020-07-30 22:32:45 +00:00