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fa3d0dc026
DAG.FoldConstantArithmetic() can fail even though both operands are Constants if OpaqueConstants are involved. Continue trying other combine possibilities in tis case. Differential Revision: http://reviews.llvm.org/D6946 Somewhat related to PR21801 / rdar://19211454 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237822 91177308-0d34-0410-b5e6-96231b3b80d8
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