[PATCH] D144189: [AIX][CodeGen] Storage Locations for Constant Pointers

[Qiongsi Wu via Phabricator via llvm-commits]

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This patch adds an `llc` option `-mroptr` to specify storage locations for constant pointers on AIX.

When the `-mroptr` option is specified, constant pointers, virtual function tables, and virtual type tables are placed in read-only storage. Otherwise, by default, pointers, virtual function tables, and virtual type tables are placed are placed in read/write storage.

There will be a follow-up patch that enables the `mroptr` option for `clang`.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D144189

Files:
  llvm/docs/ReleaseNotes.rst
  llvm/include/llvm/CodeGen/CommandFlags.h
  llvm/include/llvm/Target/TargetOptions.h
  llvm/lib/CodeGen/CommandFlags.cpp
  llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
  llvm/test/CodeGen/PowerPC/aix-xcoff-roptr.ll
  llvm/test/CodeGen/PowerPC/aix64-xcoff-roptr.ll
  llvm/tools/llc/llc.cpp

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