* [CODEGEN] Redo CodegenLLVM.

* Add remarks about origin of the pass

Properly acknowledge related projects

* Fix and expression

* [METAL] use 32bit indexing for metal until we have a bound adapted pass

* fix lint

* [RPC] Expose module handle

* not include handle

* [RPC] Include rpc session info into context

* add type checker in return converison

* [PASS] Fix intrinsic lowering with fma and other intrin

* relax rtol for sqrt

* add binary broadacst

* fix testing

* revise testing threshold

* added initial llvm codegen for amdgpu

* fixed whitespace

* fixed hsaco gen from ir

* fixed targetmachine for rocm and added GetSource for rocm

* fixed whitespace issues

* changed statement to use less than 100 lines

* added intrinsics for workgroup - rocm

* whitespace - newline error fix

* fixed error msg for workitem-workgroup intrinsics

* added llvm ir dump for rocm codegen

* [ROCM] changed codegen to emit proper amdgpu kernel header

* fixed whitespace error

* fixed whitespace error- 2

* fixed AddFunction to not to use extra arg

1. Changed AddFunctionInternal to not to take extra arg for target type
2. Use Target from CodeGenLLVM to check for AMDGPU target

* fixed whitespaces

* fixed whitespaces 2

* fixed codegen for AMDGPU - now generating valid IR

* fixed codegen depending on code review

* reviewed alignment for amd devices

* added code to dump code object to file

* fixed cpplint errors

* print out IR after pass manager

* added code to dump asm, obj to file and std string

* fixed whitespaces

* Update codegen_amdgpu.cc

* used registry for amdgpu llvm

* Fixed whitespaces

* added code for calling linker

* fixed formatting errors

* added rocm link python interface

* fixed pylint issues and added more body to the function

* added doc string

* added doc string for module

* fixed python code after review, fixed llvm object codegen

* fixed linker to generate code object

* removed dumping to output file and debugging log out

* fixed lint for python code

* added fault check after running linker

* removed print statement in rocm.py

* changed rocm lld linker to raise runtimeerror than emitting error log to stderr

* changed the way linker command line is pass to subprocess.popen

* removed redundant code and reuse tvm utils

* removed commented out code

* removed cloning of unused modules, and put IR into string

Clarify confusing error message for unmatched context

* rename the nchw and pass the unit test; going to do it for nhwc depthwise

* bug with fusion

* nchw works fine; nhwc float32 problem remains

* still cannot bind them together

* fusion works

* syntax fix

* all bugs fixed; test cases pass

* minor fix on nn.h

* back wrt input

* backward wrt input nhwc; only test case in recipe

* test case for depthwise back wrt input

* test case for depthwise backward wrt weight

* tags

* minor fixes

* pylint test; add arch=3.7

* modify scheduler

* better backward depthwise w.r.t weight scheduler

* updated scheduler

* test_topi_depthwise_conv2d_back_input.py and test_topi_depthwise_conv2d_back_weight.py success

* all test cases wrt input pass

* update

* new test cases and scheduler

* not working 1 and 2

* good wrt weight, bad wrt input

* test cases added

* remove tf lines

* minor fix

* compute arch changed

* remove compile hook

* minor change

* pylint

* fix the float for python case

* fix cases for python3 case

* except for memoize

* fix most; memoize still wrong

* memoize added

* unexpected layout cases added for scheduler

* error message layout other than NHWC added

* improve padding

* fix as pr requests

* remove dilate in backward wrt weight

* [RUNTIME] Enable extension type to PackedFunc.

* More comments

* [DOCS] Add prerequisites about zlib1g-devin

Add prerequisites about zlib1g-dev. It occurs `/usr/bin/ld: cannot find -lz` without zlib1g-dev.

* Add prerequisites about python-setuptools 

Add prerequisites about python-setuptools. Otherwise, it will fail when executing `python setup install --user` command.

* [DOCS] Add prerequisites about python-dev

Add installation prerequisites about python-dev. Otherwise, it will fail with `SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel.` when executing `python setup install --user`.

* [RUNTIME][RPC] Enable remote linking of device code.

* fix build

* improved conv2d for last group of workloads

* conv2d_nchw improved on 14_256_256 and 56_64_128

* [SCHEDULE] Enahance cache_write to enable layout change.

* more tests

Fix markdown syntax error (code shifts out of markdown-code box).

* relu activation migrated to topi

* reviews addressed

* relu compute deleted

* conv2d_nchw updated

* resnet18 hand tuned schedule added

* pylint error fixed

* one more workload test for conv2d_nchw

* conv2d schedule subfunctions added for different patterns

* reviews addressed

* [TEST] Add memoize to save test data

* Update comment

* mark py version

* [SETUP] Always use relpath for setup

* [CMAKE] Fix cmake llvm build

* CPU Schedule for raspberry pi

* Update

* Update

* Add topi.target

* Refactor

* Update

* Make python3 happy

* Improve

* Improve

* Improve

* Use get_const_int