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Commit 56bd02c5 authored by Dan Gohman's avatar Dan Gohman
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Generalize the zext(trunc(t) & C) instcombine to work even with 

C is not a low-bits mask, and add a similar instcombine for
zext((trunc(t) & C) ^ C).

llvm-svn: 73705
parent 5a728c90
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