[PATCH 8/8] R600: Add cmpxchg instruction for evergreen

[Matt Arsenault]

On Sep 9, 2014, at 6:06 PM, Aaron Watry <awatry at gmail.com> wrote:

> 
> -      if (!MRI.use_empty(MI->getOperand(DstIdx).getReg()))
> +      if (!MRI.use_empty(MI->getOperand(DstIdx).getReg()) || MI->getOpcode() == AMDGPU::LDS_CMPST_RET)
>         return BB;

These all LGTM, except this checking for a specific opcode looks hacky. This at least should have a FIXME comment about why it’s here
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