[PATCH] D65002: AMDGPU/GlobalISel: Handle most function return types

[Matt Arsenault via Phabricator via llvm-commits]

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

handleAssignments gives up pretty easily on structs, and i8 values for
some reason. The other case that doesn't work is when an implicit
sret needs to be inserted if the return size exceeds the number of
 return registers.


https://reviews.llvm.org/D65002

Files:
  lib/Target/AMDGPU/AMDGPUCallLowering.cpp
  lib/Target/AMDGPU/AMDGPUCallLowering.h
  test/CodeGen/AMDGPU/GlobalISel/function-returns.ll
  test/CodeGen/AMDGPU/GlobalISel/irtranslator-amdgpu_vs.ll
  test/CodeGen/AMDGPU/GlobalISel/irtranslator-function-args.ll
  test/CodeGen/AMDGPU/GlobalISel/ret.ll
  test/CodeGen/AMDGPU/ret.ll

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