forked from OSchip/llvm-project
4c86a1d97b
Re-run canonicalization passes after Polly's code generation. The set of passes currently added here are nearly all the passes between --polly-position=early and --polly-position=before-vectorizer, i.e. all passes that would usually run after Polly. In order to run these only if Polly actually modified the code, we add a function attribute "polly-optimzed" to a function that contains generated code. The cleanup pass is skipped if the function does not have this attribute. There is no support by the (legacy) PassManager to run passes only under some conditions. One could have wrapped all transformation passes to run only when CodeGeneration changed the code, but the analyses would run anyway. This patch creates an independent pass manager. The disadvantages are that all analyses have to re-run even if preserved and it does not honor compiler switches like the PassManagerBuilder does. Differential Revision: http://reviews.llvm.org/D14333 llvm-svn: 254150 |
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| autoconf | ||
| cmake | ||
| include/polly | ||
| lib | ||
| test | ||
| tools | ||
| utils | ||
| www | ||
| .arcconfig | ||
| .arclint | ||
| .gitattributes | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CREDITS.txt | ||
| LICENSE.txt | ||
| Makefile | ||
| Makefile.common.in | ||
| Makefile.config.in | ||
| README | ||
| configure | ||
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.