[PATCH] D38607: [AMDGPU] New 64 bit div/rem expansion

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

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

Old expansion was 20 VGPRs, 78 SGPRs and ~380 instructions.
This expansion is 11 VGPRs, 12 SGPRs and ~120 instructions.

Passes OpenCL conformance test_integer_ops quick_[u]long_math


https://reviews.llvm.org/D38607

Files:
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  test/CodeGen/AMDGPU/sdivrem64.ll
  test/CodeGen/AMDGPU/udivrem64.ll

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