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authorEli Friedman <efriedma@quicinc.com>2019-03-28 20:44:50 +0000
committerEli Friedman <efriedma@quicinc.com>2019-03-28 20:44:50 +0000
commit96f295e23bed5b717313f41fb71d81e8f1d49090 (patch)
treee95da9d1d760160bbbcfc0947f6e1376de839ef6 /lldb/source/Plugins/ScriptInterpreter/Python
parentc87869ebea000dd6483de7c7451cb36c1d36f866 (diff)
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[InterleavedAccessPass] Don't increase the number of bytes loaded.
Even if the interleaving transform would otherwise be legal, we shouldn't introduce an interleaved load that is wider than the original load: it might have undefined behavior. It might be possible to perform some sort of mask-narrowing transform in some cases (using a narrower interleaved load, then extending the results using shufflevectors). But I haven't tried to implement that, at least for now. Fixes https://bugs.llvm.org/show_bug.cgi?id=41245 . Differential Revision: https://reviews.llvm.org/D59954 llvm-svn: 357212
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