forked from OSchip/llvm-project
b646dd92c2
Summary: I don't have a direct motivational case for this, but it would be good to have this for completeness/symmetry. This pattern is basically the motivational pattern from https://bugs.llvm.org/show_bug.cgi?id=43251 but with different predicate that requires that the offset is non-zero. The completeness bit comes from the fact that a similar pattern (offset != zero) will be needed for https://bugs.llvm.org/show_bug.cgi?id=43259, so it'd seem to be good to not overlook very similar patterns.. Proofs: https://rise4fun.com/Alive/21b Also, there is something odd with `isKnownNonZero()`, if the non-zero knowledge was specified as an assumption, it didn't pick it up (PR43267) With this, i see no other missing folds for https://bugs.llvm.org/show_bug.cgi?id=43251 Reviewers: spatel, nikic, xbolva00 Reviewed By: spatel Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D67412 llvm-svn: 372257 |
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