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wasm-micro-runtime/wamr-compiler
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Wenyong Huang 8d88471c46
Implement AOT static PGO (#2243) 
LLVM PGO (Profile-Guided Optimization) allows the compiler to better optimize code
for how it actually runs. This PR implements the AOT static PGO, and is tested on
Linux x86-64 and x86-32. The basic steps are:

1. Use `wamrc --enable-llvm-pgo -o <aot_file_of_pgo> <wasm_file>`
   to generate an instrumented aot file.
2. Compile iwasm with `cmake -DWAMR_BUILD_STATIC_PGO=1` and run
      `iwasm --gen-prof-file=<raw_profile_file> <aot_file_of_pgo>`
    to generate the raw profile file.
3. Run `llvm-profdata merge -output=<profile_file> <raw_profile_file>`
    to merge the raw profile file into the profile file.
4. Run `wamrc --use-prof-file=<profile_file> -o <aot_file> <wasm_file>`
    to generate the optimized aot file.
5. Run the optimized aot_file: `iwasm <aot_file>`.

The test scripts are also added for each benchmark, run `test_pgo.sh` under
each benchmark's folder to test the AOT static pgo.
2023-06-05 09:17:39 +08:00
..
build_llvm_arc.sh Fix several issues in CI binary releasing (#2064) 2023-03-26 12:19:45 +08:00
build_llvm_xtensa.sh Fix several issues in CI binary releasing (#2064) 2023-03-26 12:19:45 +08:00
build_llvm.py Fix Windows/MSVC build issues (#1498) 2022-09-17 21:16:38 +08:00
build_llvm.sh Fix several issues in CI binary releasing (#2064) 2023-03-26 12:19:45 +08:00
CMakeLists.txt Update cmake files and wamr-test-suites to support collect code coverage (#1992) 2023-02-28 17:38:18 +08:00
main.c Implement AOT static PGO (#2243) 2023-06-05 09:17:39 +08:00
README.md Update document for iwasm/wamrc dependent packages (#2183) 2023-05-08 16:30:56 +08:00

README.md

Build wamrc AOT compiler

Both wasm binary file and AOT file are supported by iwasm. The wamrc AOT compiler is to compile wasm binary file to AOT file which can also be run by iwasm. You can execute following commands to build wamrc compiler:

For Linux(Ubuntu 20.04 as an example):

First, make sure necessary dependency are installed:

sudo apt-get install git build-essential cmake g++-multilib libgcc-9-dev lib32gcc-9-dev ccache 

cd wamr-compiler
./build_llvm.sh (or "./build_llvm_xtensa.sh" to support xtensa target)
mkdir build && cd build
cmake .. (or "cmake .. -DWAMR_BUILD_PLATFORM=darwin" for MacOS)
make
# wamrc is generated under current directory

For Windows：

cd wamr-compiler
python build_llvm.py
mkdir build && cd build
cmake ..
cmake --build . --config Release
# wamrc.exe is generated under .\Release directory