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Sometimes `isLoopEntryGuardedByCond` cannot prove predicate `a > b` directly. But it is a common situation when `a >= b` is known from ranges and `a != b` is known from a dominating condition. Thia patch teaches SCEV to sum these facts together and prove strict comparison via non-strict one. Differential Revision: https://reviews.llvm.org/D42835 llvm-svn: 324453 |
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