Matthias Braun 56a781495a DAGCombiner: Continue combining if FoldConstantArithmetic() fails. ...

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

llvm-svn: 237822

2015-05-20 18:54:02 +00:00

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