[PATCH] D58758: GlobalISel: Fix RegBankSelect for REG_SEQUENCE

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: qcolombet.
Herald added subscribers: jdoerfert, Petar.Avramovic, volkan, kristof.beyls, tpr, javed.absar, rovka, nhaehnle, wdng, jvesely.

The AArch64 test was broken since the result register already had a
set register class, so this test was a no-op. The mapping verify call
would fail because the result size is not the same as the inputs like
in a copy or phi.

      

The AMDGPU testcases are half broken and introduce illegal VGPR->SGPR
copies which need much more work to handle correctly (same for phis),
but add them as a baseline.


https://reviews.llvm.org/D58758

Files:
  lib/CodeGen/GlobalISel/RegisterBankInfo.cpp
  test/CodeGen/AArch64/GlobalISel/regbankselect-reg_sequence.mir
  test/CodeGen/AMDGPU/GlobalISel/regbankselect-reg-sequence.mir

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