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* Fix another infinite loop in Reassociate caused by Constant::isZero().Owen Anderson2015-11-201-0/+13
| | | | | | Not all zero vectors are ConstantDataVector's. llvm-svn: 253723
* Fix a pair of issues that caused an infinite loop in reassociate.Owen Anderson2015-11-201-0/+20
Terrifyingly, one of them is a mishandling of floating point vectors in Constant::isZero(). How exactly this issue survived this long is beyond me. llvm-svn: 253655
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