[PATCH] D17042: AMDGPU/SI: move SMRD to flat if UseFlatForGlobal is true

[Changpeng Fang via llvm-commits]

cfang created this revision.
cfang added reviewers: tstellarAMD, arsenm.
cfang added subscribers: llvm-commits, arsenm.

For a SMRD, if SBase is a Vector register, we need to move it to VAlu. On Vi+,
addr64 buffer loads are not supported, so we will have to use flat loads instead.

This patch implements this "Move".

http://reviews.llvm.org/D17042

Files:
  lib/Target/AMDGPU/SIInstrInfo.cpp
  test/CodeGen/AMDGPU/salu-to-valu.ll

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