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< title > Polly - Getting Started< / title >
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< h1 > Building and Installing Polly< / h1 >
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You can build Polly with < a href = "https://cmake.org/" > cmake< / a > and your preferred geneator (e.g. Ninja, make, Visual Studio, etc.).
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< h3 id = "source" > Get the code< / h3 >
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< pre >
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git clone https://github.com/llvm/llvm-project.git
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< / pre >
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You can also get a shallow clone by running:
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< pre >
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git clone --depth 1 https://github.com/llvm/llvm-project.git
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< h3 id = "build" > Build Polly< / h3 >
< pre >
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mkdir build & & cd build
cmake '-DLLVM_ENABLE_PROJECTS=clang;polly' ../llvm
cmake --build .
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< / pre >
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You can also pass arguments to cmake to specify a particular generator (e.g. < code > -G Ninja< / code > ) or the build type (< code > -DCMAKE_BUILD_TYPE=Release< / code > ).
If you just want to play around with Polly, it is recommended to do a Release+Assert build by passing
< code > -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON< / code > .
< h3 > Test Polly< / h3 >
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To test Polly, you can run
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< pre > cmake --build . --target check-polly< / pre >
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< h3 > Using Polly< / h3 >
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Suppose that you want to compile a program hello.c using Polly.
To compile it with Polly (in the build folder), you can run:
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bin/clang -O3 -mllvm -polly hello.c
< / pre >
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< h3 > Troubleshooting< / h3 >
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< p >
If you run out of memory when building with Ninja, try lowering the concurrency of Ninja (e.g. < code > ninja -j 2 < / code > ).
More tips and tricks to building and using LLVM can be found < a href = "https://llvm.org/docs/GettingStarted.html#common-problems" > here< / a > .
< / p >
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< p >
For more information on getting started with Polly and LLVM in general, see LLVM's < a href = "https://llvm.org/docs/GettingStarted.html" > getting started docs< / a > .
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