* [IR] Change pragma scope convention, enable pass unroll option via pragma

* add coverage test

* add explicit unroll as option

[PASS] Support buffer reuse for different types

* [PASS] Prepare storage rewrite for unified buffer

* more comments

* [PASS] Enable StorageRewrite before virtual thread lowering

* update

* fix testcase

* [BACKEND] Vulkan Runtime and SPIRV Codegen

* fix doc

* fix #802, create cache based on sugar tensor

* [Pass] Improve storage rewrite

* fix ci

* fix comment

* fix comment

* modified schedule_dataflow_rewrite.cc to fix losing tensor problem

* modified schedule_dataflow_rewrite.cc for lint scan

* modified schedule_dataflow_rewrite.cc for lint scan

* using tensor's value_index to index output of stage op

* repare address offset for different kinds of dtype

* bc

* aaa

* aaaaa

* repare address for different dtypes

* remove nonsense files

* add whitespace of line 581

* use base alloc elem_type

* enhance the testcast of basic buffer is 64bits,32bits,16bits,8bits

* use extends[0]->type() as dtype of offset

* clear program writes

* [PASS] StorageRewrite Fold Inplace op storage when possible

* update comment to fix typos

* Support rank-0 tensor

* fix lint

* [RUNTIME][PASS] Allow declare vector type array

* fix bcast

* [BUFFER] Enable vload/store function in buffer

* ok

* [STORAGE][BUFFER] Support access ptr for clear access pattern.

* fix lint

* [CODEGEN/PASS] add restricted, alignment option

* fix lint

* Fix the alloca

* [CODEGEN/PASS] Improve callpacked lowering, allow pass array callback.

* fix cython

* [PASS] StorageRewrite, reuse memory pass as in NNVM.

* fix issue