[PATCH] D48586: [AMDGPU] Early expansion of 32 bit udiv/urem

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

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

This allows hoisting of a common code, for instance if denominator
is loop invariant. Current change is expansion only, adding licm to
the target pass list going to be a separate patch. Given this patch
changes to codegen are minor as the expansion is similar to that on
DAG. DAG expansion still must remain for R600.


https://reviews.llvm.org/D48586

Files:
  lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
  test/CodeGen/AMDGPU/amdgpu-codegenprepare-i16-to-i32.ll
  test/CodeGen/AMDGPU/dagcombine-select.ll

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