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[AMDGPU][Waitcnt] Fix handling of flat instrs

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[AMDGPU][Waitcnt] Fix handling of flat instrs

On GFX9 and earlier, flat memory ops may decrement VMCNT out-of-order as well as LGKMCNT out-of-order.

Differential Revision: https://reviews.llvm.org/D46616

Details

Committed
msearlesJun 4 2018, 9:51 AM
Differential Revision
D46616: [AMDGPU][Waitcnt] Fix handling of flat instrs
Parents
rL333925: [X86] Only accept const SelectionDAG to…
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