Fix potentially N^2 behavior handling arrays with many of the
same value which get RAUW'd.  This speeds up reading the .bc
file in PR1616 from 852s to 0.19s on my G5 with a debug build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41209 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed