[PATCH] D124884: [AMDGPU] Add intrinsic llvm.amdgcn.raw.buffer.load.lds

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added inline comments.


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Comment at: llvm/test/CodeGen/AMDGPU/llvm.amdgcn.raw.buffer.load.lds.ll:16
+; GCN:       ; %bb.0: ; %main_body
+; GCN-NEXT:    s_mov_b32 m0, s4
+; GCN-NEXT:    buffer_load_dword off, s[0:3], 0 lds
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asroy wrote:
> m0 holds the size of LDS, should we save the value of m0 before overwriting it, and write the value back before issuing ds_read?
DS_* do not read M0 since gfx9. These intrinsics are only available since gfx9.
Moreover, on gfx8 and earlier selection of DS opcodes takes care about M0 initialization right before the opcode.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D124884/new/

https://reviews.llvm.org/D124884