[llvm] r185378 - Make PBQP require/preserve MachineLoopInfo - the spiller requires it.

[David Blaikie]

On Mon, Jul 1, 2013 at 1:47 PM, Lang Hames <lhames at gmail.com> wrote:
> Author: lhames
> Date: Mon Jul  1 15:47:47 2013
> New Revision: 185378
>
> URL: http://llvm.org/viewvc/llvm-project?rev=185378&view=rev
> Log:
> Make PBQP require/preserve MachineLoopInfo - the spiller requires it.

Test case?

>
> Modified:
>     llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp
>
> Modified: llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp?rev=185378&r1=185377&r2=185378&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp (original)
> +++ llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp Mon Jul  1 15:47:47 2013
> @@ -43,6 +43,7 @@
>  #include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
>  #include "llvm/CodeGen/MachineDominators.h"
>  #include "llvm/CodeGen/MachineFunctionPass.h"
> +#include "llvm/CodeGen/MachineLoopInfo.h"
>  #include "llvm/CodeGen/MachineRegisterInfo.h"
>  #include "llvm/CodeGen/PBQP/Graph.h"
>  #include "llvm/CodeGen/PBQP/HeuristicSolver.h"
> @@ -436,6 +437,8 @@ void RegAllocPBQP::getAnalysisUsage(Anal
>    au.addPreserved<LiveStacks>();
>    au.addRequired<MachineBlockFrequencyInfo>();
>    au.addPreserved<MachineBlockFrequencyInfo>();
> +  au.addRequired<MachineLoopInfo>();
> +  au.addPreserved<MachineLoopInfo>();
>    au.addRequired<MachineDominatorTree>();
>    au.addPreserved<MachineDominatorTree>();
>    au.addRequired<VirtRegMap>();
>
>
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