[llvm] r286137 - [AArch64] Remove dead store. Found by gcc7.

[via llvm-commits]

Thanks, David.

On 2016-11-07 14:11, Davide Italiano via llvm-commits wrote:
> Author: davide
> Date: Mon Nov  7 13:11:25 2016
> New Revision: 286137
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=286137&view=rev
> Log:
> [AArch64] Remove dead store. Found by gcc7.
> 
> Modified:
>     llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
> 
> Modified: llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp?rev=286137&r1=286136&r2=286137&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp 
> (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp Mon
> Nov  7 13:11:25 2016
> @@ -575,15 +575,12 @@ AArch64LoadStoreOpt::mergeNarrowZeroStor
>        MergeForward ? getLdStBaseOp(*MergeMI) : getLdStBaseOp(*I);
> 
>    // Which register is Rt and which is Rt2 depends on the offset 
> order.
> -  MachineInstr *RtMI, *Rt2MI;
> +  MachineInstr *RtMI;
>    if (getLdStOffsetOp(*I).getImm() ==
> -      getLdStOffsetOp(*MergeMI).getImm() + OffsetStride) {
> +      getLdStOffsetOp(*MergeMI).getImm() + OffsetStride)
>      RtMI = &*MergeMI;
> -    Rt2MI = &*I;
> -  } else {
> +  else
>      RtMI = &*I;
> -    Rt2MI = &*MergeMI;
> -  }
> 
>    int OffsetImm = getLdStOffsetOp(*RtMI).getImm();
>    // Change the scaled offset from small to large type.
> 
> 
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