Duncan P. N. Exon Smith 42883d0ac4 Don't use isNullValue to evaluate ConstantExpr
ConstantExpr can evaluate to false even when isNullValue gives false.

Fixes PR18143.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196611 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-06 21:48:36 +00:00
..
2013-12-05 05:44:44 +00:00