[GVN] Split AvailableValueInBlock into two parts [NFC]
AvailableValue is the part that represents the potential rematerialization. AvailableValueInBlock is simply a pair of an AvailableValue and a BB which we might materialize it in.
This is motivated by http://reviews.llvm.org/D16608. The intent is that we'll have a single function which handles the local case which both local and non-local will use to identify available values. Once that's done, the local case can rematerialize at the use site and the non-local case can do the SSA construction as it does currently.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258882 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed