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44d510a3c6
An i64 AssertZExt from a type smaller than i32 has at least 33 leading zeros which mean it has at least 33 sign bits. Since we have a couple patterns that use two sexti32, I've switched to a ComplexPattern so tablegen didn't have to generate 9 different permutations. As noted in the FIXME, maybe we should just call computeNumSignBits, but we don't have tests that benefit from that yet. Reviewed By: luismarques Differential Revision: https://reviews.llvm.org/D97130 |
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