tree ed560bc6c98ac07fc048c24e8e025f92e92f13f4
parent 75a5b712086802daacf8bb646ffe9f8f72602670
author Chris Lattner <sabre@nondot.org> 1279173964 +0000
committer Chris Lattner <sabre@nondot.org> 1279173964 +0000

make various clients of ReplaceAndSimplifyAllUses tolerate 
it *changing* the things it replaces, not just causing them
to drop to null.  There is no functionality change yet, but 
this is required for a subsequent patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108414 91177308-0d34-0410-b5e6-96231b3b80d8