[PATCH] D159055: [JITLink][PowerPC][WIP] Handle local branch target is out of range

[Kai Luo via Phabricator via llvm-commits]

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`R_PPC64_REL24` relocation is able to branch directly if the displacement of the branching target is within int26 range. If not, we have to create a stub to perform indirect branching.

This patch assumes all local branching need a stub and optimize it via a PreFixupPass.

Since rtdyld for ppc64 has handled such case, now we implement it for jitlink for ppc64.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D159055

Files:
  llvm/include/llvm/ExecutionEngine/JITLink/ppc64.h
  llvm/lib/ExecutionEngine/JITLink/ELF_ppc64.cpp
  llvm/lib/ExecutionEngine/JITLink/ppc64.cpp

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