James Molloy 2ccf761faa Compute demanded bits for icmp instructions ... Instead of bailing out when we see an icmp, we can instead at least say that if the upper bits of both operands are known zero, they are not demanded. This doesn't help with signed comparisons, but it's at least better than bailing out. llvm-svn: 249687		2015-10-08 12:40:06 +00:00
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basic.ll