[PATCH] D66430: [AMDGPU] Kernel calls lowering

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec created this revision.
rampitec added reviewers: msearles, kzhuravl.
Herald added subscribers: t-tye, Anastasia, tpr, dstuttard, yaxunl, mgorny, nhaehnle, wdng, jvesely, arsenm.

In OpenCL, a kernel may call another kernel as if it was a non-kernel
function. However, kernels and functions have different ABI. To fix this,
we copy the body of kernel A into a new non-kernel function fA, if we
encounter a call to A. All calls to A are then transferred to fA.


https://reviews.llvm.org/D66430

Files:
  lib/Target/AMDGPU/AMDGPU.h
  lib/Target/AMDGPU/AMDGPULowerKernelCalls.cpp
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  lib/Target/AMDGPU/CMakeLists.txt
  test/CodeGen/AMDGPU/call-to-kernel-undefined.ll
  test/CodeGen/AMDGPU/call-to-kernel.ll

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