Co-authored-by: Scott Cyphers <diyessi@users.noreply.github.com>

* Fix compilation warnings

* Camels

* [MLIR] Update build system to use LLVM mono-repo for MLIR

* [MLIR] LLVM mono-repo conflicts

* Disable lit tests

* Fix formatting

* Fix memopt tests

* PR fix

* Fix view test
Co-authored-by: Nagy Mostafa <nagy.mostafa@gmail.com>

* WIP

* WIP

* Refactored existing convolution

* Add Channel and num of filters bounds parameters to helper

* Works on unit-tests. v1 op gets converted and breaks

* Fixed group conv with groups in filters shape. Tests pass

* style

* add LIT tests

* Switch outer loop to affine loop

* re-org code

* PR fixes

* Revert ops.td

* PR fixes

* [MLIR] Use call back for MatMul.

* Use callback for Gemm.

* Use mkldnn callback for Softmax.

* Address PR feedback.

* Fix merge errors.

* Change to tail allocation struct.

* Use mkldnn callback for AvgPool.

* Add callbacks for AvgPoolBackprop, MaxPool, and MaxPoolBackprop.

* Fix merge errors.

* Use UnrankedMemRefType for callbacks.

* Address PR feedback.

* Cleanup.

* Address PR feedback.

* Fix a bug.

* Use global variable to hold attributes.

* Convert layout if needed for pooling.

* Address PR feedback.

* Add header.

* Address PR feedback.

* Update Copyright to 2017-2020.

* Address PR feedback.
Co-authored-by: Scott Cyphers <diyessi@users.noreply.github.com>

* AliasMap WIP

* Added liveness info

* WIP

* WIP: Tests

* WIP: LIT tests

* Added knobs for mem optimization pass. More LIT tests

* Revert affine_lowerer change

* More elaborate comment

* Minor fixes

* style-apply

* Rename liveness

* Switch to Analysis framework

* Fix optimization conditions

* Remove LIT test

* style

* Switch to equivalence relationship impl of non-alias relationship

* refined comment

* Switch non-alias to equivalence relationship

* Fix bad merge

* Adding tests. WIP

* Added buffer size tracking and unit-tests

* Added LIT and unit-tests

* Turn optimization ON

* style

* fix unit-tests

* Fix useCount

* Fix copyright and typo

* Refine few comments, remove new lines

* style fix
Co-authored-by: Scott Cyphers <diyessi@users.noreply.github.com>
Co-authored-by: Sang Ik Lee <sang.ik.lee@intel.com>

* Affine lowering support for
    1) GreaterEq
    2) LessEq
    3) Equal
    4) NotEqual

* - cast result op from i1 to i8 for comparision operators

* Addressed PR comments

* Style fix

* - style check
- use select instead of zero_extendi durinng CompOp lowering

* - fix style
- use createOneConstant and createZeroConstant helpers in select intrinsic

* Use NG_U8_TYPE_ID for BooleanType in ngraph dialect

* Diable CE and Softmax unit test in MLIR

* - LIT parser test for comparision ops

* - Affine dailect LIT tests for Comparision Ops

* Address PR feedback

* fix typo

* - use `cast` to deduce element Type
- add more strict type checking to LIT Test

* fix CHECK label's for comparision ops

* Use UInt8 in verification logic for CMP op's

* - use UInt8 for the resultOp verification Logic in CMP op
- fix unit test failures

* Update license to new year

* Pick up some strays

* [MLIR] Update MLIR/LLVM repo

I need it to get MemRef lowering override mechanism (291a309d).

* Fix style
Co-authored-by: Scott Cyphers <diyessi@users.noreply.github.com>

* Map each ng tensor to a linear buffer and a view

* fix comment

* Create views only when a value is assigned a buffer id

* style

* Fix lit test

* WIP

* WIP

* WIP

* WIP

* style

* WIP

* WIP

* Add err msg

* Fix headers and cleanup

* Re-organize files. Create MLIR backend classes

* WIP

* Refactored. Code compiles

* Moved context to Runtime class to outlive compilation and execution

* style-apply

* Base Runtime class. Few other modifications

* Minor fixes

* Fixed Runtime::run() to take type-erased pointer

* renamed core compiler

* rename backend compiler

* rename runtime compiler

* PR feedback

* Fix build fails