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3044dc51cf
MSVC warns about comparison between a signed and unsigned integer. The rules of C(++) define that an unsigned comparison has to be carried-out in this case. This is unlikely to be intended. Fix by assigning the loop's upper bound to a signed integer first. This also avoids repeated evaluation of the invariant upper bound. llvm-svn: 311548
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.