[PATCH] D31478: AMDGPU: Actually write nops for writeNopData

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl.

Before this was just writing 0s, which ends up looking like a
v_cndmask_b32 v0, s0, v0, vcc. Write out an encoded s_nop instead.


https://reviews.llvm.org/D31478

Files:
  lib/Target/AMDGPU/MCTargetDesc/AMDGPUAsmBackend.cpp
  test/CodeGen/AMDGPU/nop-data.ll

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