Daniel Sanders 2fb8564d99 [mips] Handle undef when extracting subregs from FP64 registers.
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

llvm-svn: 250039
2015-10-12 13:55:44 +00:00
2015-10-12 13:39:33 +00:00
2015-10-09 17:42:52 +00:00
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