[PATCH] D73008: AMDGPU: Do binop of select of constant fold in AMDGPUCodeGenPrepare

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: rampitec.
Herald added subscribers: kerbowa, hiraditya, t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.
Herald added a project: LLVM.

DAGCombiner does this, but divisions expanded here miss this
optimization. Since 67aa18f165640374cf0e0a6226dc793bbda6e74f,
divisions have been expanded here and missed out on this
optimization. Avoids test regressions in a future patch.


https://reviews.llvm.org/D73008

Files:
  llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
  llvm/test/CodeGen/AMDGPU/amdgpu-codegenprepare-fold-binop-select.ll
  llvm/test/CodeGen/AMDGPU/dagcombine-select.ll
  llvm/test/CodeGen/AMDGPU/select-fabs-fneg-extract.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D73008.239009.patch
Type: text/x-patch
Size: 22262 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20200119/2c941cb3/attachment.bin>