* Use Eigen kernel for REFLECT mode Pad.

* Do not call is_optimized_et.

* Check size requirement before creating scratchpad.

* Check max scratchpad size before allocating scratchpad_buffer.

* Add the same checks for CODEGEN.

* Fix unused-parameter warning.

* Fix a typo.

* Address PR feedback.

* Fix a bug.

* Fix a typo.

Migrate PR#3710 from master.

Enable in place rotation for Reshape for blocked data format.

* Enable Gather with negative indices.

* Address PR feedback.

* Remove GOE from Gather unit tests.

* Hotfix for negative axes in unsqueeze op

* Review fix I

* Add missing input

* If builder does nothing, don't dive into the inputs

* Reverse test

* simplify, add test

* Add test

* Add cmake util to find os type

* Change CENTOS to REDHAT

* Set RPATH based on OS type

* Remove debug strings

* Provenance for builders (#3644)

* Provenance for builders

* Tests

* Tests

* Update src/ngraph/node.hpp
Co-Authored-By: Sayantan Sarkar <sayantan.sarkar@intel.com>

* style

* Finish migration

* Add ops constructed by ops

* Constructors.

Type prop.

Decompose LayerNorm.

Add serialize.

* Add dummy test case.

* Add dummy type prop test.

* Fix some build errors.

* Remove build errors.

* Update decompose for bprop.

* Change begin_norm_axis default value to 1.

* Style.

* Reorder class members.

* Add actual type prop tests.

* Add fprop test.

* Working on bprop test.

* Bprop tests.

* Allow flattened scale and bias.

* Add support for flattened scale and bias.

* Fix incorrect type_name.

* PlaidML: Decompose fused_op LayerNorm

* Update Backprop constructors.

* PlaidML: Add missing header file.

* Remove doc about removed param.

* Fix type prop tests.

* PlaidML: Disable unit test.

* Fix stats flattening axes bug.

* Validate ReverseSequence attributes according to the ONNX spec

* UT error message adjustment

* Do not throw for unknown domains in ONNX models

* UT that makes sure onnx_importer does not throw for unknown domains

* Check if nGraph throws for unknown ONNX domain and op

* WIP

* Fixes

* Increase bitwidth for arg idx attrib

* Minor fixes

* style-apply

* nGraph-ONNX CI improvement

- Added parallel CI on many SKUs,
- Jenkinsfile written in Declarative Pipeline which allows displaying sequential stages for parallel branches in Blue Ocean
- Moved proper CI code to ngraph-onnx repository
- Moved base_image_builder to ngraph-onnx repository

* Fix license header

* try catch for git info retrieval

* Add unsupported ops to iGPU backend

* Revert previous change

* [MLIR] Enable LIT testing in CMAKE

This PR enables LIT testing in nGraph for MLIR Compiler, introduced in
PR3523. We can now do `make check-mlir-lit` to run LIT tests.

* Address feedback

* Revisit PR after cmake clean-up

* [MLIR] Introduce ngraph-opt tool

To be used, among other things, for LIT testing.
`elementwise_binary_ops.mlir` shows a simple LIT test
using ngraph-opt.

Dummy affine_lowering/lit_test.mlir test that served as initial testing
of LIT tool configuration is now removed.

* Address feedback

* Bump MLIR version and minor fixes in nGraph

* advance commit ids

* fix commit id

Fix reshape error for onnx (on master)

Fixed NormalizeL2 decomposition for input shape length != 4

Initial support for float16 was done before the ngraph::float16 data
type was introduced in nGraph. This PR aligns ONNX frontend with the
latest float16 implementation.