[PATCH] D46472: [HIP] Support offloading by linkscript

[Yaxun Liu via Phabricator via cfe-commits]

yaxunl created this revision.
yaxunl added reviewers: rjmccall, tra.

To support linking device code in different source files, it is necessary to
embed fat binary at host linking stage.

This patch emits an external symbol for fat binary in host codegen, then
embed the fat binary by lld through a link script.


https://reviews.llvm.org/D46472

Files:
  include/clang/Driver/Options.td
  lib/CodeGen/CGCUDANV.cpp
  lib/Driver/ToolChains/CommonArgs.cpp
  lib/Driver/ToolChains/CommonArgs.h
  lib/Driver/ToolChains/Gnu.cpp
  test/CodeGenCUDA/device-stub.cu

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