[PATCH] D61985: AMDGPU/GlobalISel: Use waterfall loop for buffer_load

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: rampitec, tstellar, scott.linder.
Herald added subscribers: Petar.Avramovic, t-tye, tpr, dstuttard, kristof.beyls, rovka, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.

This adds support for more complex waterfall loops that need to handle
operands > 32-bits, and multiple operands.


https://reviews.llvm.org/D61985

Files:
  lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  lib/Target/AMDGPU/AMDGPURegisterBankInfo.h
  test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn-buffer-load.mir
  test/CodeGen/AMDGPU/GlobalISel/regbankselect-extract-vector-elt.mir

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