* tuple -> xla_tuple (+headers)

xla_get_tuple_element

get_tuple_element headers

adding get_tuple_element + fixes

get_tuple_element

XLAFunction; breaks tests

compiling libngraph.so w/ XLAFunction and Function; fixing tests is next

build & test fixes

formatting

m_arguments -> get_arguments (first step to hide m_arguments)

removing some get_arguments

get_arguments -> get_arguments_DEPRECATED

more DEPRECATED

formatting

m_arguments no more! at least technically

halfway

tests pass

xla_function.cpp/hpp

move defs into cpp files

get_input_argument -> get_input_op

formatting

* add xla_function.* and assert -> throw

* assert -> throw, remove cassert

* removing emitter.cpp; poor guy got left behind

* addressing feedback p1

* rename GetTupleElement -> GetOutputElement

* adding a comment to get_arguments_FOR_GRAPH_REWRITE_ONLY

* removing virtual off set_name

clean-up, formatting fixes

cleanup2

clean up 3

tests pass

remove printf

switching to the old version of TupleType::==

topological sort pass to call the utility function
clone util to be used by frameworks e.g. for fprop cache

LSTM benchmark test

performance counters

* WIP generalized dot

* Add some multi-axis 3D, 4D, and 5D tests

* Add test on some 'pretty big' tensors

* Reworked dot to have less flexible axis-pairing behavior

* Backprop for dot... and a fix for a dumb bug in CoordinateTransform

* Forgot to commit some stuff in merge

* Disable tests that currently don't work on CPU

* Fix temporarily disabled test that should pass on NGVM and INTERPRETER but wasn't due to new axis-selection convention for dot

* Remove obsolete ScalarTensorProduct kernel/instruction

* Review comment

* s/n_dot_axes/dot_axis_count/

* s/dot_axis_count/reduction_axes_count/

* Adapt CPU emitter dot fallback to new kernel

* add support for n-dimensional operations by calling runtime/kernels

* rename cpu backend classes and files

* add tuple support to INTERPRETER

* move ndarray out of runtime to test where it belonged

* fix Tuple op per review comment

* subgraph labels

* adding more documentation for Label

* minor fixes

* Remove unnecessary dependency on codegen in interpreter

* Check for incorrect return type and undeclared parameters in Function's constructor

* Address review comments

* Add scarier error message when the result node has null return type (should never happen)
* Add new constructor for Function that doesn't require the return type, and unit test for same

* New Interpreter backend

* PR review comments

* More RP fixes

* oops

* make autodiff tests backend aware

* wip

* wip

* more ops

* wip

* fix merge error

* merge fixes

* Simpler kernel for broadcast

* Fixed behavior for integer divide-by-zero, added unit tests

* Strided and higher-dimensional slice (just tested to 3D)

* Higher-dimensional sum

* Replace-slice de-Eigenized; NOT TESTED AT HIGHER DIMENSIONS YET

* Correct sum behavior when eliminating zero-length axes; add unit tests; also, add higher-dim unit tests for replace-slice

* Higher-dimensional reduce, 'cause hey, why not?

* Remove BroadcastScalarInstruction

* Adding test for an observed failure at trivial sum on 5-tensors

* De-Eigenized and higher-dimmified concat

* Replace 'auto' in the kernels

* temporary delete to ease merge

* Re-insert tests that were deleted to ease merge

* Refactor view-iteration

* De-Eigenize reshape

* Rework divide kernel to use std::enable_if to distinguish between floating and non-floating types

* Update docs to reflect newly implemented cases in several ops

* Rename parameters to View for more clarity; remove axis_walk_order (it's redundant)

* Formatting

* More terminological rejiggering

* De-Eigenize scalar-tensor product

* De-Eigenize dot

* Update docstrings

* Remove 'implementation status' tables from docstrings

* Change step -> strides everywhere for consistent terminology

* Formatting

* Replace asserts in view.cpp with exceptions

* Fix typo

* Fix incorrect result type in dot1d test (ouch...)

* Add missing support for Float64 to ngvm/external_function

* Add int16 and uint16 (how was this missing?)

* A few more additions relative to the missing element types

* Disable tests that will not pass on CPU; they can still be run with test/unit-test --gtest_also_run_disabled_tests --gtest_filter='DISABLED_NGVM.*'

* Move project_ and inject_ functions to common.[ch]pp, not view.[ch]pp

* Rename View to CoordinateTransform

* Add prefix ++ and += to CoordinateIterator

* move replace_node to util

* static run_matchers_on_nodes_list

* switching to map

* formatting

* addressing Scott's feedback and fixing warnings

* more pattern matcher refactoring

refactoring cont'd

* Add numpy_transpose to the builder for numpy-stype transpose operations

* fix docstring

* make sure to throw the error

* add json lib 2.1.1

* add json serialization of graph

* cleanup

* enhance unit test

* remove FunctionProvider class and replace with virtual get_function() in Node

* remove json code from element_type

* move serialize to be directly in the ngraph namespace. cleanup header file.

* add cname check to element::operator==

* add using json = nlohmann::json

* Autodiff for abs

* Formatting, more tests for abs

* Cos autodiff; also a clarifying comment in the abs test

* Forgot cos.cpp

* Sin autodiff

* Again, forgot to add sin.cpp  :/

* Tan autodiff

* Minor formatting tweak

* Commit partial work on select backprop so I can run valgrind on the server  :/

* Fix boolean thingy so it works on Linux

* Autodiff for ceiling, convert (untested), floor, sign. Fix unit test for tan. Implement ceiling, floor in VM.

* Fix bug in abs/sign unit test ranges

* Add multiplicative inverse and square-root ops (needed for hyperbolic trig autodiff)

* Better formula for sqrt adjoints

* Autodiff for hyperbolic trig ops

* Forgot to add cpp files for hyperbolics

* Remove inv (don't need it after all); also formatting (oops)

* fix bug with Convert autodiff

* Autodiff for concat

* Restore the accidentally-commented-out unit test for abs

* Formatting

* Fix 'unordered_map.at' exception when Adjoints::Adjoints visit a node that has never been add_delta'd; remove workarounds for that bug

* Fix erroneous 'not implemented' docstring for op::Not

* Autodiff for sum

* Checking in broken support for replace_slice so I can test it with valgrind on the dev box

* Fix unit test bug with tensor initialization; formatting

* Implement replace-slice in CPU backend

* Autodiff for Slice and ReplaceSlice

* Tweak docs for ReplaceSlice

* Remove no-longer-needed cast of arg list to runtime::TensorView

* Start of pattern matcher

recursive graph matcher, pattern node

add matcher.cpp

add files for matcher, graph_rewrite

add const to on_match_class

fix comp errors

reshuffle pattern matching code across corresponding files

fix comment

run clang-format

graph_rewrite replace_node

getting simple test cases to work

op/pattern.cpp

toward graph_rewrite tests

older matcher API

before clean up tests

before rebase

build bbrks

more tests

clean up

more clean-up

more cleanup 2

more clean up 3

clean up 4

clang errors

clang errors2

apply code format

move match_class to matcher

major clean up after moving match_class to matcher.cpp

removing tracing changes

rebased as of 11/8

make matcher use i/o descs to traverse the graph; change replace_io

switching to io tds

graph_rewrite tests fail

all tests pass

formatting

unhandle outputs explicitly for now

reset permissions back to 0644; bad bad windows

fixes after rebase

* fixes

* addressing Scott's feedback

* First compiling pass, doesn't link tests, looks like templates aren't properly initialized?

* Make reduce inline, compiles, sum passes test

* Initial working reduce op builder

* Add Std dev, Variance, L2Norm. Tests fail because Power isn't actually implemented in ngraph++ yet

* Add Doc Strings, slight refactor

* fix tests after master merge

* Fix style issues raised in PR review

* Switch to Sum-based ops instead of Reduce-based ops for simpler autodiff.

* Add requested TODO comments

* Use all_close for tests

* Remove product op

* add json lib 2.1.1

* turn off clang-format for json lib

* add unit test file

* add code to poison the use of ngraph.hpp from within the ngraph library

* ParameterizedTensorView and ElementType cleanup

* change element to_type() to from()

Clang cuda example from:
https://gist.github.com/anonymous/855e277884eb6b388cd2f00d956c2fd4

* wip

* remove ndarray dependency from ParameterizedTensorView

* get rid of operator= on ParameterizedTensorView

* remove unimplemented ctor

* remove get_parameterized_tensor_view from TensorView class

* cleanup

* the patient will get worse before getting better. remove ParameterizedTensorView from element type

* cleanup obsolete includes

* remove unused file

* move aligned_buffer and cleanup

* cleanup

* wip

* wip

* wip

* cleanup

* cleanup

* wip

* finally got rid of getting a non-const vector from PTV

* wips

* wip

* remove unused

* fix PR comments