[PATCH] D152943: [AMDGPU] Fix VOPD dependency checks during combine

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

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Check superreg/subreg defs of an instruction when checking for
dependencies. This may cause some regressions, but better be
safe than sorry. Changed tests are affected because of the
imlict-defs of the superregs.


https://reviews.llvm.org/D152943

Files:
  llvm/lib/Target/AMDGPU/GCNVOPDUtils.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/insertelement.i16.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/insertelement.i8.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.load.2d.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.load.2darraymsaa.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.load.3d.a16.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.load.3d.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/mul-known-bits.i64.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.dim.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.sample.dim.ll
  llvm/test/CodeGen/AMDGPU/vopd-combine.mir

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