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Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184564 91177308-0d34-0410-b5e6-96231b3b80d8
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Remember the minimum cost of the registers in an allocation order and
the number of registers at the end of the allocation order that have the
same cost per use.
This information can be used to limit the search space for
RAGreedy::tryEvict() when looking for a cheaper register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172280 91177308-0d34-0410-b5e6-96231b3b80d8
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This saves a bit of memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168852 91177308-0d34-0410-b5e6-96231b3b80d8
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Clients can use the equivalent functions in MRI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165990 91177308-0d34-0410-b5e6-96231b3b80d8
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Allow targets to access this API. It's required for RegisterPressure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158102 91177308-0d34-0410-b5e6-96231b3b80d8
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