forked from OSchip/llvm-project
e1ff0cf2eb
Summary: Instead of forbidding such access functions completely, we verify that their base pointer has been hoisted and only assert in case the base pointer was not hoisted. I was trying for a little while to get a test case that ensures the assert is correctly fired in case of invariant load hoisting being disabled, but I could not find a good way to do so, as llvm-lit immediately aborts if a command yields a non-zero return value. As we do not generally test our asserts, not having a test case here seems OK. This resolves http://llvm.org/PR31494 Suggested-by: Michael Kruse <llvm@meinersbur.de> Reviewers: efriedma, jdoerfert, Meinersbur, gareevroman, sebpop, zinob, huihuiz, pollydev Reviewed By: Meinersbur Differential Revision: https://reviews.llvm.org/D28798 llvm-svn: 292213 |
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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.