[PATCH] D144276: [ORC] Introduce SetUpExecutorNativePlatform utility.

[Lang Hames via Phabricator via llvm-commits]

lhames created this revision.
lhames added reviewers: sgraenitz, sunho, v.g.vassilev, drmeister, Hahnfeld.
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Simplifies the process of building an LLJIT instance that supports the native
platform features (initializers, TLV, etc.).

SetUpExecutorNativePlatform can be passed to LLJITBuilder::setPlatformSetUp
method. It takes a reference to the ORC runtime (as a path or an in-memory
archive) and automatically sets the platform for LLJIT's ExecutionSession based
on the executor process's triple.

This is a rough draft -- we'll need more polish and some tests before this
lands. In particular we need to re-work ORCPlatformSupport to handle
COFF/Windows. We could take this opportunity to do away with the whole
LLJITPlatformSupport concept. It really only exists to implement `initialize`
and `deinitialize`, so I think that we could instead define standard functions
"__orc_rt_lljit_initialize" and "__orc_rt_lljit_deinitialize" and alias them
to platform-specific implementations (a wrapper for dlopen on *nix, a wrapper
for LoadLibrary for Windows, etc.).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D144276

Files:
  llvm/include/llvm/ExecutionEngine/Orc/COFFPlatform.h
  llvm/include/llvm/ExecutionEngine/Orc/LLJIT.h
  llvm/lib/ExecutionEngine/Orc/COFFPlatform.cpp
  llvm/lib/ExecutionEngine/Orc/LLJIT.cpp
  llvm/tools/lli/lli.cpp

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