Import SIMD feature and add some workload samples (#438)

samples/workload/meshoptimizer/.gitignore

@@ -0,0 +1,2 @@
+build
+meshoptimizer

samples/workload/meshoptimizer/CMakeLists.txt

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+# Copyright (C) 2019 Intel Corporation. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+cmake_minimum_required (VERSION 3.0)
+
+project(bench-meshoptimizer)
+
+################  BINARYEN ################
+find_program(WASM_OPT
+    NAMES wasm-opt
+    PATHS /opt/binaryen-version_97/bin /opt/binaryen/bin
+)
+
+if (NOT WASM_OPT)
+  message(FATAL_ERROR
+    "can not find wasm-opt. "
+    "please download it from "
+    "https://github.com/WebAssembly/binaryen/releases/download/version_97/binaryen-version_97-x86_64-linux.tar.gz "
+    "and install it under /opt"
+  )
+endif()
+
+################  MESHOPTIMIZER  ################
+include(ExternalProject)
+
+ExternalProject_Add(codecbench
+  PREFIX codecbench
+  GIT_REPOSITORY https://github.com/zeux/meshoptimizer.git
+  GIT_TAG        master
+  GIT_SHALLOW    ON
+  GIT_PROGRESS   ON
+  SOURCE_DIR     ${CMAKE_CURRENT_SOURCE_DIR}/meshoptimizer
+  UPDATE_COMMAND git clean -fd && git checkout -- *
+                   && ${CMAKE_COMMAND} -E echo "Applying patch"
+                   && git apply ${CMAKE_CURRENT_SOURCE_DIR}/codecbench.patch
+  CONFIGURE_COMMAND ${CMAKE_COMMAND} -DCMAKE_TOOLCHAIN_FILE=${CMAKE_CURRENT_SOURCE_DIR}/../cmake/toolchain.cmake ${CMAKE_CURRENT_SOURCE_DIR}/meshoptimizer
+  BUILD_COMMAND  make codecbench.opt
+  INSTALL_COMMAND ${CMAKE_COMMAND} -E copy ./codecbench.opt.wasm ${CMAKE_CURRENT_SOURCE_DIR}/build/codecbench.wasm
+)

samples/workload/meshoptimizer/README.md

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+"codecbench of meshoptimizer" sample introduction
+==============
+
+This sample demonstrates how to build [codecbench of messoptimizer](https://github.com/zeux/meshoptimizer) into
+WebAssembly with simd support and run it with iwasm.
+
+## Preparation
+
+please refer to [installation instructions](../README.md).
+
+## Build with clang-11 and wasi-sdk
+
+``` shell
+$ mkdir build && cd build
+$ cmake ..
+$ make
+# to verify
+$ ls codecbench.wasm
+```
+
+## Or build with EMCC
+
+EMCC is another toolchain to compile C code to WASM. In this case, will have
+a higher performance with EMCC.
+
+``` shell
+$ git clone https://github.com/zeux/meshoptimizer.git
+$ cd messoptimizer
+$ emcc tools/codecbench.cpp src/vertexcodec.cpp src/vertexfilter.cpp \
+       src/overdrawanalyzer.cpp src/indexgenerator.cpp src/vcacheoptimizer.cpp \
+       src/clusterizer.cpp src/indexcodec.cpp src/vfetchanalyzer.cpp \
+       src/spatialorder.cpp src/allocator.cpp src/vcacheanalyzer.cpp \
+       src/vfetchoptimizer.cpp src/overdrawoptimizer.cpp src/simplifier.cpp \
+       src/stripifier.cpp -O3 -msimd128 \
+       -s TOTAL_MEMORY=268435456 -s "EXPORTED_FUNCTIONS=['_main']" \
+       -o codecbench.wasm
+$ ls -l codecbench.wasm
+```
+
+## Run workload
+
+Firstly please build iwasm with simd support:
+
+``` shell
+$ cd <wamr dir>/product-mini/platforms/linux/
+$ mkdir build && cd build
+$ cmake .. -DWAMR_BUILD_SIMD=1
+$ make
+```
+
+Then compile wasm file to aot file and run:
+
+``` shell
+$ cd <wamr dir>/wamr-compiler/build
+$ ./wamrc --enable-simd -o codecbench.aot codecbench.wasm
+$ cd <wamr dir>/product-mini/platforms/linux/
+$ ./iwasm codecbench.aot
+```
+

samples/workload/meshoptimizer/codecbench.patch

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+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index eccc49e..dac126c 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -127,3 +127,42 @@ install(FILES
+     ${CMAKE_CURRENT_BINARY_DIR}/meshoptimizerConfig.cmake
+     ${CMAKE_CURRENT_BINARY_DIR}/meshoptimizerConfigVersion.cmake
+     DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/meshoptimizer)
++
++##################################################
++# codecbench
++##################################################
++add_executable(codecbench tools/codecbench.cpp ${SOURCES})
++
++set_target_properties(codecbench PROPERTIES OUTPUT_NAME codecbench.wasm)
++
++target_compile_options(codecbench
++  PUBLIC
++    -std=c++11
++    -Wno-unused-function
++    -Wno-unused-variable
++)
++
++target_link_options(codecbench
++  PUBLIC
++    LINKER:-allow-undefined,--demangle
++)
++
++find_program(WASM_OPT
++    NAMES wasm-opt
++    PATHS /opt/binaryen-version_97/bin /opt/binaryen/bin
++)
++
++if (NOT WASM_OPT)
++  message(WARNING "can not find wasm-opt and will not optimize any wasm module")
++endif()
++
++add_custom_target(codecbench.opt ALL
++  COMMAND
++    ${WASM_OPT} -Oz --enable-simd -o codecbench.opt.wasm codecbench.wasm
++  BYPRODUCTS
++    ${CMAKE_CURRENT_BINARY_DIR}/codecbench.opt.wasm
++  WORKING_DIRECTORY
++    ${CMAKE_CURRENT_BINARY_DIR}
++)
++
++add_dependencies(codecbench.opt codecbench)