Commit Graph

427 Commits

Author SHA1 Message Date
Tian Jin 2e8f012195
Support krnl loop permutation (#215)
* Define krnl.permute op.

* Support krnl.permute operation.

* Properly remove loop references.

* Re-push, Github was down.

* Need to debug interpretOp error.

* Fix lowering bug by erasing ops after full krnl IR interpretation is done, and clean up & comment code.

* Introduce permute, unroll operations.

* More debug.

* Remove std::set.

* krnl.terminate fails to be converted.

* Pass all tests, need to add legal ops as well as part of the conversion target.

* Change test format to new permute spec.

* Bug fix for nested iterate op lowering.

* Simplify error reporting.

* Fix compilation error.

* Increase comments coverage.

* Remove unnecessary imports.

* Re-trigger Jenkins

* Add permute/unroll tests.

* Retrigger Jenkins

* Using a non-trivial example.

* Add more complex example/test case.
2020-07-24 18:19:38 +08:00
Anh Leu c9e3ba2d64
Add shape inference for ScalerOp (#228)
* move scalerop to decompose

* change clang format

* change clang format

* add shape inference for scaler op

* fixing generated onnxop

* generate onnx.md

* Add shape inference for scaler op

* add benefit for scaler decompose and simplify scaler shape inference
2020-07-23 13:05:19 -04:00
Tung D. Le 034f98c00c
Shape inference for some ops in RNN models (#207)
* Shape inference for ShapeOp

* Shape inference for TileOp

* Fix check-doc

* Fix onnx-mlir-doc

* Shape inference for GatherOp

* Check validity of GatherOp's indices tensor

* Shape inference for Slice

* Tests for SliceOp

* Fix importing none inputs

* Type inference for constantofshape

* Empty tensor in case of ConstantOfShape

* Remove unrelated changes

Co-authored-by: chentong319 <chentong@us.ibm.com>
2020-07-22 10:15:56 -04:00
NathanielMcVicar 1263d01968
Add PIC property to RtMemRefUtils (#225)
Co-authored-by: Gheorghe-Teodor Bercea <gt.bercea@gmail.com>
Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-22 14:15:25 +08:00
chentong319 f43f26a79c
modify builder (#214) 2020-07-21 22:05:18 -04:00
Gheorghe-Teodor Bercea a58594ec81
Revert "Emit allocs at the top of functions (#222)" (#226)
This reverts commit b27e57cc4f.
2020-07-21 18:30:39 -04:00
Gheorghe-Teodor Bercea b27e57cc4f
Emit allocs at the top of functions (#222)
* Reorganize main function.

* Follow review comments.

* Emit constants are globals in Krnl and LLVM dialects.

* Add support for moving dynamic alloca instructions to top of functions.

* Fix memory pooling tests.

* Various fixes.

* Fix lit tests.

* More test fixes.

* Reformat.

* Reformat some more.

* Fix issue with TestConv and split-input-file.

* Use smart pointers.

* Remove redundant pointer.

* Reformat.

* Add initMap description.

* Clean up tests.
2020-07-20 19:24:17 -04:00
Anh Leu 4b33c312d6
Add ONNXScalerOp pattern (#220)
* add ONNXScalerOp pattern

* move ScalerOp rewrite rule to Rewrite.cpp .td

* attempt to fix format issue

* fixing format issue

* fixing format issue2

* add ONNXScalerOp pattern

* move ScalerOp rewrite rule to Rewrite.cpp .td

* attempt to fix format issue

* fixing format issue

* fixing format issue2
2020-07-17 11:01:30 -04:00
chentong319 13b8591af8
add AnyMemRef (#219) 2020-07-14 11:15:06 -04:00
Tung D. Le 0df421f7ad
Fix importing none inputs (#217) 2020-07-14 10:06:58 -04:00
gongsu832 d235f248e4
Add emitjni target (#204)
* Detect llvm-project commit change in utils/clone-mlir.sh and rebuild llvm-project
for zLinux Jenkins build bot

* Add --EmitJNI target (tested working with mnist and resnet50)
- MainUtils
  * first shot at refactoring compileModuleToSharedLibrary
  * add setExecPath call to allow resolving runtime directory from onnx-mlir
    executable path when ONNX_MLIR_RUNTIME_DIR is not set. This allows
    tests to run without having to install onnx-mlir or to explicitly set
    ONNX_MLIR_RUNTIME_DIR
- RtMemRef
  * add getDataSize for C (equivalent of size() for C++).
  * fix setStrides bug (setting sizes, not strides)
- TestConv
  * _main_graph-*.so were filling up /tmp. Change to use fixed shared library
    in build directory

* Fix clang-format-lint complaints

* - getRuntimeDir checks lib64
- install targets for javaruntime and jniruntime
- remove ONNX_MLIR_LD_PRELOAD_onnx-mlir and ONNX_MLIR_LD_PRELOAD_onnx-mlir-opt

* See what happens when `kExecPath` decl is dropped.

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-11 13:23:13 +08:00
Gheorghe-Teodor Bercea af75b4c75e
Add selected MLIR options (#213)
* Reorganize main function.

* Follow review comments.

* Emit constants are globals in Krnl and LLVM dialects.

* Add selected MLIR passes.

* Refactor.

* Fix descriptions.

* Refactor.
2020-07-09 18:12:57 -04:00
Kevin O'Brien c557bd3444
remove access toke, use secret instead (#212) 2020-07-09 15:32:06 -04:00
chentong319 8848464a23
changes for mypipeline.onnx (#202)
* changes for mypipeline.onnx

* format

* rm MLOpBuildTable.inc

* copy string without free

* fix the memory issue

* restore change for STRING

* format

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-08 16:52:56 -04:00
Gheorghe-Teodor Bercea 100bfc81b4
Bundle individual memory pools into a single memory pool (#183)
* Reorganize main function.

* Follow review comments.

* Emit constants are globals in Krnl and LLVM dialects.

* Add memory pooling for constant sized arrays.

* Clean code.

* Clean code.

* Clean code.

* Add simple bundling test.

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-08 12:35:31 -04:00
Tung D. Le 0a936edf79
Remove ImportNodeReshape (#208) 2020-07-08 10:27:14 -04:00
Tian Jin 01a4977c74
Remove optimize_loops/return_loops op. (#200)
* Remove optimize_loops/return_loops op in elementwise ops lowering and fix tests in onnx_lowering.mlir.

* Fix all tests.

* Remove all occurences of def_loops/return_loops.

* Fix test.

* Fix comments for defineLoops & emitKrnlLoopsAndIterationForOperand function.

* Remove emitOptimizedLoops.

* Allow not specifying optimizedLoops when creating KrnlIterateOperandPack.

* Fix style.

* Make BuildKernelLoop helper not emit optimize/return_loop operations & retire emitKrnlLoopsAndIterationForOperand by replacing it with BuildKernelLoop.

* DefineLoops -> DefineLoopsEx, remove redundant emitKrnlLoopsAndIterationForOperand function.

* BuildKrnlLoop API name update.

* Tweak comments.

* Remove unused withEmptyOptimization flag.

* Better comment for BuildKrnlLoop.

* Fully remove krnl.return_loops/optimize_loops op.

* Trigger Windows Build

* Bump windows ci python version.
2020-07-08 12:49:15 +08:00
Kevin O'Brien 07757a28ce
Mention how to change LLVM commit level (#210) 2020-07-07 16:43:01 -04:00
Kevin O'Brien 0d375dd75e
allow build of prereq docker image on forks (#209)
* push to GITHUB_ACTOR in Docker Hub

* forcing change to cause rebuild

* ditto

* add docker hub secret

* ditto

* ditto

* ditto

* add comment

* differentiate between master and fork

Co-authored-by: Alexandre Eichenberger <alexe@us.ibm.com>
2020-07-07 12:42:05 -04:00
Aaron Smith 8e6642b2bc
Update llvm version (#187)
* Update llvm version

* Update git hash for llvm-project

* Update option handling

* Update LLVM version

* Update tests

* Update git hash

* Update docs

* clang-format

* Fix operand adaptor

* Fix dim with constant

* Update LSTM.cpp

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-07 21:26:00 +08:00
Tung D. Le 8b6cf7c661
Remove dangling constant op (#205) 2020-07-07 13:47:54 +08:00
Tung D. Le 7e05f371de
Replace std.load/std.store by affine.load/affine.store (#180)
* Move to more recent LLVM ID (May 15)

* clang-format

* Bump cache version up

* Update readme

* Fix doc check

* Move to a newer commit id

* Update LoopToStandard -> SCFToStandard

* Change MLIRSideEffects to MLIRSideEffectInterfaces

* Add AffineScope trait to KrnlIterateOp

* [ElementWise] Load/Store op to AffineLoad/AffineStore op

* [Gemm, MatMul, Reduction, Softmax] Load/Store op to AffineLoad/AffineStore op

* [Concat] Load/Store op to AffineLoad/AffineStore op

* [Pad, PadConstantValuePad, Reshape, Transpose] Load/Store op to AffineLoad/AffineStore op

* [LSTM] Load/Store op to AffineLoad/AffineStore op

* [Conv, Norm, Pooling] Load/Store op to AffineLoad/AffineStore op

* Add affine-loop-fusion pass

* Use Load/Store for scalar

* Use Load/Store for scalar

* Fix lit tests

* Unknown dimensions for broadcasting ops

* Affine Load/Store for scalar memref

* clang-format

Co-authored-by: Gheorghe-Teodor Bercea <gt.bercea@gmail.com>
Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-05 16:20:21 +08:00
Tung D. Le 2c8f5701bd
Lower SqueezeOp to Krnl dialect (#164)
* Lower Squeeze op to Krnl dialect

* Emit tensor size as a single constant; add a lit test for unknown dimensions

* Code style

* Speical case where the input is only used by this squeeze op

* Remove squeeze-in-place optimization

* Update ConvertONNXToKrnl.cpp

Twek to re-run tests.

* Trigger buildbot re-run.

* Re-run CI

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-03 16:26:41 +08:00
Haruki Imai 4d96247327
Set alignment attribute to AllocOp of insertAllocAndDealloc() (#195)
* Added alignment in AllocOp of insertAllocAndDealloc()

* Added comments

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-02 15:21:01 +08:00
Kevin O'Brien 5c6d85e6f3
README change to add info on using prebuilt Docker images (#201)
* Add description of prebuilt docker images

* example Dockerfile using prebuilt container

* vscode config files for Docker example

* vscode files for Docker example

* vscode files for Docker example

* add Dockerfile info

* typo

* fix bad name for example file

doc check failed because file name was incorrect

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-02 13:54:38 +08:00
gongsu832 cf96d635cc
Compile cruntime with fpic (#188)
* Detect llvm-project commit change in utils/clone-mlir.sh and rebuild llvm-project
for zLinux Jenkins build bot

* Compile libcruntime.a object with -fPIC to avoid segfault when embedded into model.so

* Enable unit tests on zLinux

Co-authored-by: Alexandre Eichenberger <alexe@us.ibm.com>
Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-07-01 15:06:55 +08:00
Tian Jin e902506ee5
Support encoding data type infomration as part of the DMR struct. (#178)
* Support encoding data type infomration as part of the DMR struct.

* Support full range of np types.

* Report error when encountering unsupported type.

* Add gerRank method API.

* Add missing API declarations.

* DynMemRef -> RtMemRef

* Format code.

* Missed DynMemRef -> RtMemRef conversion.

* More comments for RMR, and rename variable names from dmr -> rmr.

* DynMemRef -> RtMemRef.

* Format code.
2020-06-30 10:58:21 +08:00
Tian Jin f9cb113a84
Krnl block (#170)
* Support krnl.block printing/parsing.

* Checkpoing, PoC working.

* Implement krnl.block operation.

* Make tuple -> make pair.

* Bug fix, white list krnl.iterate op while lowering.

* Add return loop op lowering.

* Bug fix.

* Allow using loop refs more than once if they are used by krnl.iterate op.

* More comments and include lit test.

* Make krnl.block definition more restrictive.

* Splitting tests creates modules, making affine_map matching more verbose, prefer not splitting since test cases are small.

* Use verbose mode for LIT test on Z.

* Use verbose build to diagnose.

* Missing libraries linking when building in shared mode.

* Fix whole-archive linkage.

* Try preloading affinetransforms.

* Try put AffineTransforms into LD_LIBRARY_PATH.

* Fix python syntax error.

* No need to link with whole-archive libs, as they are pre-loaded.

* Do not preload any library.

* Link with whole-archive libs.

* Explicitly shared linkage in CMake.

* Fix CMake syntax error.

* Restore test.py

* Update z13.sh

* Update z13.sh

* Provide krnl.block operation description.
2020-06-27 22:35:01 +08:00
Kevin O'Brien fd3ee81bcf
fix wrong tag on docker image (#193)
Was tagging the image with "latest", should be the CPU type
2020-06-26 11:43:32 -04:00
chentong319 2e08b2112c
String type (Ready for Review) (#182)
* string type from tensorflow

* simplify type

* parser and print

* gen StringType for tablegen

* onnx to onnx-mlir type

* add namespace

* allow all integer type

* dialect document

* add test case

* format

* more precise type for ONNXOp

* format

* enable the failed test

* update comment

* update onnx.md

Co-authored-by: Gheorghe-Teodor Bercea <gt.bercea@gmail.com>
2020-06-25 16:34:37 -04:00
Gheorghe-Teodor Bercea f811718144
Add new passes related to Linalg and Affine dialects (#181)
* Reorganize main function.

* Follow review comments.

* Emit constants are globals in Krnl and LLVM dialects.

* Add more passes to onnx-mlir-opt.

* Clean-up.
2020-06-25 13:36:39 -04:00
chentong319 cc68f77d8d
Merge onnx ml into onnx (#176)
* merge onnx-ml into onnx

* delete onnx ml
2020-06-22 20:01:56 -04:00
Tian Jin f81f44662b
Remove whole archive linkage (#173)
* Explicit pass registration.

* Remove whole-archive linking, replace with regular linking.

* Remove whole-archive linkage related scripts.

* No need to preload library, simply expose them through LD_LIBRARY_PATH.

* Use OMLibs to record all onnx-mlir libs.

* Add OMResultTypeInferenceOpInterface lib to OMLibs.

* nit.

* No need to expose libs through LD_LIBRARY_PATH.

* Fix missing onnx header file issue.

* Define OMLibs before Tool subdirectory is imported.

* Define OMLibs at parent scope.

* Specify dependency of MainUtils on OMLibs early.

* Set OMLibs both at current & parent scope.

* Add comment about what future pass implementation should do.
2020-06-19 00:21:27 +08:00
chentong319 1fc43fa181
support map and seq in tablegen (#159)
* support map and seq in tablegen

* register MLONNX for testing

* format

* remove the unwanted test

* add a test

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-06-18 21:49:40 +08:00
Tian Jin b28fcbc745
Do not push empty string as a command argument, it breaks on Linux. (#174) 2020-06-18 21:04:55 +08:00
Alexandre Eichenberger 82d2caa542
constant folding for transpose of constant tensors (#171)
* added constant folding for transpose of constant tensors

* format

* responding to reviews
2020-06-17 10:42:06 -04:00
Alexandre Eichenberger 742e817722
Constprop2 (#167)
* initial const prop attempt

* added support for broadcast ops

* adde all binary broadcast ops into custom builders with precise type

* added test example

* working

* format

* fixed suggestion by Tung, start woring on unary

* added subtraction and neg the right way, and added elementwise mul too

* formatting changes

* format

* format

* added instructions to add new optimizations

* added propagation rules that always migrate constants toward the root of the expression, using assoc and commutativity

* format comment
2020-06-15 14:56:15 -04:00
Tian Jin a7781791e9
[NFC] Fix comment style, shorten file names. (#169)
* Fix comment style, shorten file names.

* Update CMakeLists.txt

* Rename ONNXRewrite.td to Rewrite.td
2020-06-15 11:49:09 +08:00
Tung D. Le 60c648ae39
Avoid hardcoding ops with shape inference in ShapeInferencePass (#165)
* Avoid hardcoding ops with shape inference in ShapeInferencePass

* Minimize the changes

* Clang-format

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-06-12 15:42:05 +08:00
Tian Jin e0ae583da0
Compiling Models with Large Constant Arrays (#146)
* PoC works.

* MNist works.

* Clean up.

* Fix test.

* Make Linux work.

* Use consistent symbol name.

* Fix variable name.

* Fix array addr access.

* Bug fix.

* Bug fix.

* install before running e2e tests.

* Fix build config.

* Use sudo when installing.

* Make embeddedDataLoader position independent.

* Enable ResNet50.

* Format code.

* Format MainUtil.

* Try not using sudo to install.

* Supply runtime dir via environment variable.

* Dump problematic operation.

* Dump entire function.

* Debug.

* Dump input.

* Dump constant op.

* Debug.

* Debug.

* Debug.

* Print to stderr.

* take care of endianness.

* Use endianness-aware execution session.

* Fix ZLinux error.

* Include warning when desired output endianness can't be deduced.

* Remove debug code.

* Remove debug code in shape inference.

* Support binary-decoder for testing constants packing.

* Support filename, move-to-file, elision-threshold configurations in constant packing pass for easy testing.

* Add lit test, fix lit test type mismatch.

* Add more consts packing tests.

* Ensure intermediate files are properly cleaned up.

* No need for constant elimination.

* Link with threading libraries.

* Remove debug code.

* Format code.

* More tests.

* test nit.

* Remove debug code.

* Reduce hard-coded constants.

* Use temporary and unique working directory for hosting model parameters.

* Test if it works.

* Try to find objcopy.

* Rename symbols using objcopy.

* Move sanitized name to linux section.

* Use verbose mode for debugging.

* Disambiguate pass constructor.

* Fix symbol name.

* Use Command API to build and execute commands.

* Move linux to use Command API.

* Fix reset args.

* Execute redefine sym.

* Format code.

* Do not use verbose mode for CircleCI.

* Remove debug code.

* Prettify code, add comments.

* getSegmentData -> getEmbeddedConstPool

* vector -> std::vector.

* Make sure we properly clean up intermediate files.

* Fix test cases.

* Add runtime directory.

* Trigger rebuild.

* [Merge with master] fix debug script.

* Diable affine fusion pass for now.

* Support generic fallback const packing mechanism.

* Remove debug code.

* Handle the case where objcopy is not available.

* Fix Windows missing types.

* Support int64.

* Copy packed constant to a local directory for non-Linux/Mac platforms.

* Nit: remove debug code, refactor const pack preprocessing out as a separate function.

* Cannot make preprocessConstPack a standalone function because file removers are stack-allocated, and they are deallocated prematurely when function stack gets popped, deleteing intermediate files too early.

* Don't require executable filename.

* Import ONNX data types directly.

* Fix LIT test.

* Bug fix, use moved string value.

* Remove redundant filenames.

* Fix CMake script.

* Embed endianness information as a symbol, and check during runtime.

* More comments, update lit tests.

* Fix lit test on BE machine.

* Copyright notices.
2020-06-12 10:27:05 +08:00
Tung D. Le 8c4d527eea
Lower SplitOp to Krnl dialect (#155)
* Fix importing variadic output

* Lower splitop

* Support unknown dimension and add lit tests

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-06-11 10:57:20 +08:00
Gheorghe-Teodor Bercea 4ab96fbc6c
Add basic support for memory pool (#161)
* Reorganize main function.

* Follow review comments.

* Emit constants are globals in Krnl and LLVM dialects.

* Replace internal malloc with memory pool and getref instruction.

* Lower krnl.getref to LLVM.

* Fix formatting issues.

* Add tests.

* Add missing dependency.

* Improve LLVM lowering.

* Add test to show getref is generic.
2020-06-09 16:48:33 -04:00
Aman LaChapelle ca185002f2
Add shape inference for several ops (#163)
* 1. Add shape inference for the following ops:
 - Atan
 - Tan
 - Sin
 - Cast
 - ConvTranspose
 - Flatten
 - DynamicQuantizeLinear
 - QuantizeLinear
 - DequantizeLinear
 - ConvInteger

2. Import attributes for generic nodes
3. Fixes for cases where .cast<> should be .isa<> (ONNXConcat::inferShapes)

* Fix foormatting issues

* Address comments:
 - SmallVector<> * -> SmallVectorImpl<> &
 - switch-case -> helper function
   - Inside helper function, preserve signed-ness
 - add TODOs

* Can't use signed integers yet in convertONNXTypeToMLIRType, add TODO

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-06-09 14:55:49 +08:00
gongsu832 43dc1a1e01
Fix header dep (#150)
* Detect llvm-project commit change in utils/clone-mlir.sh and rebuild llvm-project
for zLinux Jenkins build bot

* Since many headers are generated and included indirectly through
other headers, there are often missing dependencies that break
parallel build. So we add header targets for KrnlOps, ONNXOps, and
MLONNXOps, and add explicit dependencies for all the relevant headers.

* fix copy-and-paste bug

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-06-09 10:38:32 +08:00
Alexandre Eichenberger e2af505746
Constprop (#162)
* initial const prop attempt

* added support for broadcast ops

* adde all binary broadcast ops into custom builders with precise type

* added test example

* working

* format

* fixed suggestion by Tung, start woring on unary

* added subtraction and neg the right way, and added elementwise mul too

* formatting changes

* format

* format

* added instructions to add new optimizations
2020-06-08 15:45:32 -04:00
Tian Jin dedd5f4a12
Minor bugfix. (#166) 2020-06-08 14:03:35 -04:00
Tung D. Le bb17fa965f
Add AffineScope trait to KrnlIterateOp and enable affine-loop-fusion pass (#140)
* Make KrnlIterate's IVs valid to AffineLoad/AffineStore

* [Unary elementwise op] Load/Store -> AffineLoad/AffineStore

* [Conv] Load/Store -> AffineLoad/AffineStore

* Add affine-loop-fusion pass

* typos

* Mistake when merging branch master

Co-authored-by: Tian Jin <tjingrant@gmail.com>
2020-06-08 15:36:27 +08:00
Tian Jin cde1157d62
Rapid check test (#141)
* Call llc, ld from within onnx-mlir.

* Rename EmitLLVMBC -> EmitLib., reorder header files

* Edit comment.

* Checkpoint, debug.py works.

* Automatically generate inputs in debug.py.

* Use float.

* initial support for rapidcheck tests.

* Convolution test case works.

* Format code.

* Link library with MainUtils.

* Fix CMake script error.

* Fast implementation of array assertion, more detailed error analysis.

* More utility for DynMemRef.

* Fix linking issue.

* Uncomment unit test.

* Refactor to separate C++/Python ExecutionSession, enable unit test.

* format code.

* Verbose build.

* Enable PIC option for ExecusionSession.

* Fix cmake error.

* Build all targets.

* Fix doc to build all targets.

* Clean up.

* Clean up, debug.

* Use type alias consistently.

* Move definitions to DynMemRef.cpp.

* include algorithm.

* pyruntime -> PyRuntime

* Format code.

* Free memory.

* Add comments.

* Copyright notice.

* Improve stylistic consistency.

* Add comment.

* Revert irrelevant changes.

* Disambiguate.

* Refator test case generator out from test case implementation, implement example exhaustive test driver.

* Add documentation for testing.
2020-06-08 10:18:55 +08:00
Tung D. Le e2e1fbfd3b
Add type inference for CastOp (#156)
* Add type inference for CastOp

* Share type translation between op builder and onnx importer

* clang-format

* Format emitted code

* Remove unnecessary dependencies
2020-06-04 09:05:04 -04:00
Alexandre Eichenberger 2a1fe9e1e7
Believe all errors now results in meaningful actions (#153)
* removed warning missing return, dangling else

* fixed errors, made sure to return false in all shape inference failures

* shape inference use LogicalResults as return value

* format fixed

* format error

* additional error correction

* handle errors properly for all former emitError site, using either emitError, assert, or llvm_unreachable

* help added

* fixes

* edit of doc

* doc edit
2020-06-01 13:55:19 -04:00