forked from OSchip/llvm-project
9690f3b596
The -e flag exits the script with a non-zero code if any subcommand fails. This flag allows us to notice as early as possible if the test was not properly regenerated using a command like: $ create_ll.sh t.c && opt < t.ll -polly ... The above pattern is useful when iteratively developing a test case to guard against un-noticed syntax errors. Differential Revision: http://reviews.llvm.org/D5276 llvm-svn: 217463 |
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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.