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
Summary: This removes unnecessary instructions when extracting from an undefined register and also fixes a crash for O32 when passing undef to a double argument in held in integer registers. Reviewers: vkalintiris Subscribers: llvm-commits, zoran.jovanovic, petarj Differential Revision: http://reviews.llvm.org/D13467 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@250039 91177308-0d34-0410-b5e6-96231b3b80d8