[PATCH] D66180: [GlobalISel][CallLowering] Add support for splitting types according to calling conventions

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added reviewers: paquette, arsenm, t.p.northover.
Herald added subscribers: Petar.Avramovic, volkan, atanasyan, jrtc27, hiraditya, kristof.beyls, javed.absar, rovka, nhaehnle, wdng, jvesely, sdardis.
Herald added a project: LLVM.

On AArch64, s128 types have to be split into s64 GPRs when passed as arguments. This change adds the generic support in call lowering for dealing with multiple registers, for incoming and outgoing args. Support for splitting for return types not yet implemented.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D66180

Files:
  llvm/include/llvm/CodeGen/GlobalISel/CallLowering.h
  llvm/include/llvm/CodeGen/GlobalISel/Utils.h
  llvm/lib/CodeGen/GlobalISel/CallLowering.cpp
  llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
  llvm/lib/CodeGen/GlobalISel/Utils.cpp
  llvm/lib/Target/AArch64/AArch64CallLowering.cpp
  llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp
  llvm/lib/Target/ARM/ARMCallLowering.cpp
  llvm/lib/Target/Mips/MipsCallLowering.cpp
  llvm/lib/Target/X86/X86CallLowering.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/arm64-callingconv.ll
  llvm/test/CodeGen/AArch64/GlobalISel/arm64-fallback.ll

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