[PATCH] D106672: [AMDGPU][GlobalIsel] Fix unable to legalize G_CONCAT_VECTORS when loading a vector.

[Mateja Marjanovic via Phabricator via llvm-commits]

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Avoid building illegal G_CONCAT_VECTORS or G_BUILD_VECTOR instructions.
This happens when G_CONCAT_VECTORS or G_BUILD_VECTOR instructions aren't legal with the LCM (Least Common Multiple) type and
GCD (Greatest Common Divisor) type as their types.


https://reviews.llvm.org/D106672

Files:
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-global.mir

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