[PATCH] D144519: [AMDGPU] Don't set src mods on permlane16

[Joe Nash via Phabricator via llvm-commits]

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v_permlane16_b32 and v_permlanex16_b32 should not set abs and neg src
modifiers on any input, but they can set op_sel on src0 or src1 to
represent fi or bc when desired. The ISel patterns were setting
the src_modifier bits to -1, effectively setting abs and neg as well,
whenever it was intended to set op_sel, due to an error in ISel. ISel
should now correctly only set the op_sel bits.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D144519

Files:
  llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
  llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.h
  llvm/lib/Target/AMDGPU/VOP3Instructions.td
  llvm/test/CodeGen/AMDGPU/permlane-op-sel.ll
  llvm/test/CodeGen/AMDGPU/permlane16_opsel.ll

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