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* feat: add --use-ccache CLI argument to build_llvm.py Add a new --use-ccache flag that will allow developers to opt-in to using ccache for LLVM builds. This is part of a larger effort to disable ccache by default to reduce CI storage consumption while still allowing local developers to benefit from faster incremental builds. Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
70 lines
2.4 KiB
Markdown
70 lines
2.4 KiB
Markdown
# WAMR test benchmarks
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This folder contains test benchmarks for wamr.
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## Build and Run
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Refer to the `README.md` under each folder for how to build and run the benchmark.
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## Install `llvm-profdata`
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> PS: the `llvm-profdata` vesion needs to be the same major version with llvm libraries used to build wamrc.
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The tool `llvm-profdata` is used when running the `test_pgo.sh` script under the benchmark folder. There are two ways to install it:
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1. Refer to https://apt.llvm.org/, e.g. in Ubuntu 20.04, add lines below to /etc/apt/source.list
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```bash
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deb http://apt.llvm.org/focal/ llvm-toolchain-focal main
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deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal main
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# 15
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deb http://apt.llvm.org/focal/ llvm-toolchain-focal-15 main
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deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-15 main
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# 18
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deb http://apt.llvm.org/focal/ llvm-toolchain-focal-18 main
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deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-18 main
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```
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Then run `sudo apt update`, `sudo apt install llvm`. And after installing:
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```bash
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cd /usr/bin
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sudo ln -s llvm-profdata-18 llvm-profdata
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```
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2. Build manually
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```bash
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git clone --depth 1 --branch release/18.x https://github.com/llvm/llvm-project.git
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cd llvm-project
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mkdir build && cd build
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cmake ../llvm \
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-DCMAKE_BUILD_TYPE:STRING="Release" \
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-DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
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-DLLVM_APPEND_VC_REV:BOOL=ON \
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-DLLVM_BUILD_EXAMPLES:BOOL=OFF \
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-DLLVM_BUILD_LLVM_DYLIB:BOOL=OFF \
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-DLLVM_BUILD_TESTS:BOOL=OFF \
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-DLLVM_CCACHE_BUILD:BOOL=ON \
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-DLLVM_ENABLE_BINDINGS:BOOL=OFF \
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-DLLVM_ENABLE_IDE:BOOL=OFF \
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-DLLVM_ENABLE_LIBEDIT=OFF \
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-DLLVM_ENABLE_TERMINFO:BOOL=OFF \
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-DLLVM_ENABLE_ZLIB:BOOL=ON \
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-DLLVM_INCLUDE_BENCHMARKS:BOOL=OFF \
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-DLLVM_INCLUDE_DOCS:BOOL=OFF \
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-DLLVM_INCLUDE_EXAMPLES:BOOL=OFF \
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-DLLVM_INCLUDE_UTILS:BOOL=OFF \
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-DLLVM_INCLUDE_TESTS:BOOL=OFF \
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-DLLVM_BUILD_TESTS:BOOL=OFF \
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-DLLVM_OPTIMIZED_TABLEGEN:BOOL=ON \
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-DLLVM_ENABLE_LIBXML2:BOOL=OFF \
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-DLLVM_TARGETS_TO_BUILD:STRING="X86" \
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-DLLVM_INCLUDE_TOOLS:BOOL=ON \
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-G'Ninja'
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ninja -j 8
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# tool `llvm-profdata` is generated under this folder.
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```
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> **Note**: The example above shows `-DLLVM_CCACHE_BUILD:BOOL=ON` for enabling ccache in the cmake configuration. When using the `build_llvm.py` script, ccache is disabled by default to reduce CI storage consumption. To enable it with the script, use: `python3 build_llvm.py --use-ccache --arch X86`
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