[PATCH] D38950: AMDGPU: Merge BUFFER_LOAD_DWORD_OFFEN into x2, x4

[Marek Olšák via Phabricator via llvm-commits]

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

-9.9% code size decrease in affected shaders.

Totals (changed stats only):
SGPRS: 2151462 -> 2170646 (0.89 %)
VGPRS: 1634612 -> 1640288 (0.35 %)
Spilled SGPRs: 8942 -> 8940 (-0.02 %)
Code Size: 52940672 -> 51727288 (-2.29 %) bytes
Max Waves: 373066 -> 371718 (-0.36 %)

Totals from affected shaders:
SGPRS: 283520 -> 302704 (6.77 %)
VGPRS: 227632 -> 233308 (2.49 %)
Spilled SGPRs: 3966 -> 3964 (-0.05 %)
Code Size: 12203080 -> 10989696 (-9.94 %) bytes
Max Waves: 44070 -> 42722 (-3.06 %)


https://reviews.llvm.org/D38950

Files:
  lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
  test/CodeGen/AMDGPU/llvm.amdgcn.buffer.load.ll
  test/CodeGen/AMDGPU/smrd.ll

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