* AutoTVM for x86 conv2d

* Add ApplyGraphBest dispatch context

* Fix tutorial

* Fix conv2d

* Improve tutorial

* Fix default schedule

* Fix 1x1 default schedule loading

* Fix workload type

* Change gridsearch to random

* Add reference to autotvm arm

* Merge conv2d common and 1x1 decl

* Fix lint

* Minor fix

* Int8 implementation for convolution operator on Intel Skylake

* Int8 implementation for convolution operator on Intel Skylake

* PR changes

* PR changes

* PR changes

* Fixing an error

* Fixing an error

* Minor typos fix

* Minor typos fix

* Removing the broadcast16 CPP code. Using astype feature instead

* Replacing constant by variable name num_elements_intel

* Name fixes and tensorize update rule updated

* Fixing the bug about checking skylake

* Replacing bitcast with reinterpret

* Isolating INT8 and FP32 schedules to ease out future AutoTVM PR merge

* Putting check_skylake function in the x86 directory

* Added documentation and organizing files to better locations

* Tensor intrin renaming. Avoid code duplication for intrin by kernel reshaping

[TOPI] Fix reduce behavior to be consistent with numpy

* Add mean and product operators

* Fix typo

* Fix lint

* fix test

* Fix gpu schedule

* Update doc

* remove mean from topi

* Add nnvm test

* Fix cuda schedule

* Remove cuda schedule

* [TOPI] add nn schedulers for HLS backends

* fix pylint

* fix topi transform test

* [CODEGEN][AOCL] Add math intrinsic rules

* introduce aocl_emu target for AOCL emulation

* rename aocl_emu with aocl_sw_emu

* update docs

* support fallback & fix bugs in tuners & clean topi test

* update task extraction

* update task extraction

* fix arm tutorial

* Update tune_nnvm_arm.py

* Improve x86 pooling and concat

* Fix

* Fix test concatenate correct layout

* Add conditional vectorize

* Fix lint

* Modify schedule for global pooling

* Fix

* Fix warning

* Fix alter layout test

* Remove vectorization for pooling when using 4D layout

* Remove vectorization for 4D concat

* Fix concatenate layout

* Fix concatenate schedule

* Fix concat

* Fix lint

* Fix concat

* Simplify pooling logic

* Update docstring

* Fix test topi pooling

* Small changes

* [TOPI] add injective scheduler for HLS backends

* Introduced PrintBinaryExpr