[MachineOutliner][NFC] Move target frame info into OutlinedFunction
Just some gardening here.
Similar to how we moved call information into Candidates, this moves outlined
frame information into OutlinedFunction. This allows us to remove
TargetCostInfo entirely.
Anywhere where we returned a TargetCostInfo struct, we now return an
OutlinedFunction. This establishes OutlinedFunctions as more of a general
repeated sequence, and Candidates as occurrences of those repeated sequences.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337848
91177308-0d34-0410-b5e6-
96231b3b80d8
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