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b923953733
In the case where there are no good places to put constants and we fall back upon inserting unconditional branches to make new blocks, allow all constant pool references in range of those blocks to put constants there, even if that means resetting the "high water marks" for those references. This will still terminate because you can't keep splitting blocks forever, and in the bad cases where we have to split blocks, it is important to avoid splitting more than necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84202 91177308-0d34-0410-b5e6-96231b3b80d8
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