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257464a072
- Add isSelectExpensive() etc. It's used to tell codegen that select is expensive for a given target, avoid using it if possible. Currently it's only used to expand FCOPYSIGN. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32939 91177308-0d34-0410-b5e6-96231b3b80d8