git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212977
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``Constant::replaceUsesOfWithOnConstant()`` implement the replacement of one
Value with another by iterating over its def/use chain and fixing up all of
the pointers to point to the new value. See
- also `def/use chains <ProgrammersManual.html#iterate_chains>`_.
+ also `def/use chains <ProgrammersManual.html#iterating-over-def-use-use-def-chains>`_.
**Reassociation**
Rearranging associative expressions to promote better redundancy elimination