[PATCH] D20448: AMDGPU: Fix high bits after division optimization

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: tstellarAMD.
arsenm added a subscriber: llvm-commits.
Herald added subscribers: kzhuravl, arsenm.

This is essentially doing a 24-bit signed division with FP. We need to truncate to the N bit result.

http://reviews.llvm.org/D20448

Files:
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  test/CodeGen/AMDGPU/sdiv.ll
  test/CodeGen/AMDGPU/sdivrem24.ll
  test/CodeGen/AMDGPU/udiv.ll
  test/CodeGen/AMDGPU/udivrem.ll
  test/CodeGen/AMDGPU/udivrem24.ll
  test/CodeGen/AMDGPU/udivrem64.ll

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