Erich Keane cbb287c2ec Replace use of SmallVector::back + pop_back with pop_back_val
I ran across an instance where the value was being loaded
out via back, then immediately popped.  Since pop_back_val
is more efficient at this (it moves out), replace this 
instance.

llvm-svn: 316015
2017-10-17 17:45:21 +00:00
2017-10-17 15:29:11 +00:00
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