458f1aae8d
#184545 default-enables the IO sandbox in assert-builds. This causes Clang using Polly to crash (#188568). The issue is that `PassBuilder` uses `vfs::getRealFileSystem()` by default which is considered a IO sandbox violation in the Clang process. With this PR store the VFS from the `PassBuilder` from the original `registerPollyPasses` call for creating other `PassBuilder` instances. This PR also adds infrastructure for running Polly in `clang` (in addition in `opt`). `opt` does not enable the sandbox such that we need separate tests using Clang. Closes: #188568 |
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| LICENSE.TXT | ||
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| README | ||
Polly - Polyhedral optimizations for LLVM ----------------------------------------- http://polly.llvm.org/ Polly uses a mathematical representation, the polyhedral model, to represent and transform loops and other control flow structures. Using an abstract representation it is possible to reason about transformations in a more general way and to use highly optimized linear programming libraries to figure out the optimal loop structure. These transformations can be used to do constant propagation through arrays, remove dead loop iterations, optimize loops for cache locality, optimize arrays, apply advanced automatic parallelization, drive vectorization, or they can be used to do software pipelining.