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Mirror of https://github.com/RPCS3/llvm-mirror
d2dd32f947
Current runtime unrolling invalidates parent loop saying that it might have changed after the inner loop has changed, but it doesn't bother to do the same to its parents. With patch rL329047, SCEV becomes much smarter about calculation of exit counts for outer loops. We might need to invalidate not only the immediate parent, but also any of its parents as well. There is no clear evidence that there is some miscompile happening because of this (at least I don't have such test), but the common sense says that the current code is wrong. Differential Revision: https://reviews.llvm.org/D45940 Reviewed By: chandlerc llvm-svn: 330577 |
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