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Pull in r211435 from upstream llvm trunk (by Benjamin Kramer): Legalizer: Add support for splitting insert_subvectors. We handle this by spilling the whole thing to the stack and doing the insertion as a store. PR19492. This happens in real code because the vectorizer creates v2i128 when AVX is enabled. This fixes a "fatal error: error in backend: Do not know how to split the result of this operator!" message encountered during compilation of the net-p2p/libtorrent-rasterbar port. Reported by: Evgeniy <iron@mail.ua> MFC r267705: Add the llvm patch for r267704.
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