[llvm] r284018 - BranchRelaxation: Unique live ins when creating block

[Sanjoy Das via llvm-commits]

Is this NFC?  If not, does this need a test case?

-- Sanjoy

Matt Arsenault via llvm-commits wrote:
> Author: arsenm
> Date: Wed Oct 12 10:32:04 2016
> New Revision: 284018
>
> URL: http://llvm.org/viewvc/llvm-project?rev=284018&view=rev
> Log:
> BranchRelaxation: Unique live ins when creating block
>
> Modified:
>      llvm/trunk/lib/CodeGen/BranchRelaxation.cpp
>
> Modified: llvm/trunk/lib/CodeGen/BranchRelaxation.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/BranchRelaxation.cpp?rev=284018&r1=284017&r2=284018&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/BranchRelaxation.cpp (original)
> +++ llvm/trunk/lib/CodeGen/BranchRelaxation.cpp Wed Oct 12 10:32:04 2016
> @@ -379,6 +379,7 @@ bool BranchRelaxation::fixupUnconditiona
>           BranchBB->addLiveIn(LiveIn);
>       }
>
> +    BranchBB->sortUniqueLiveIns();
>       BranchBB->addSuccessor(DestBB);
>       MBB->replaceSuccessor(DestBB, BranchBB);
>     }
>
>
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