[PATCH] D113220: [X86] Selective relocation relaxation for +tagged-globals

[Matt Morehouse via Phabricator via llvm-commits]

morehouse created this revision.
morehouse added reviewers: pcc, eugenis, hctim.
Herald added subscribers: pengfei, hiraditya.
morehouse requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

For tagged-globals, we only need to disable relaxation for globals that
we actually tag.  With this patch function pointer relocations, which
we do not instrument, can be relaxed.

This patch also makes tagged-globals work properly with LTO, as
-Wa,-mrelax-relocations=no doesn't work with LTO.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D113220

Files:
  llvm/include/llvm/MC/MCExpr.h
  llvm/lib/MC/ELFObjectWriter.cpp
  llvm/lib/MC/MCExpr.cpp
  llvm/lib/Target/X86/MCTargetDesc/X86BaseInfo.h
  llvm/lib/Target/X86/MCTargetDesc/X86ELFObjectWriter.cpp
  llvm/lib/Target/X86/X86.td
  llvm/lib/Target/X86/X86AsmPrinter.cpp
  llvm/lib/Target/X86/X86FastISel.cpp
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86InstrInfo.cpp
  llvm/lib/Target/X86/X86InstrInfo.h
  llvm/lib/Target/X86/X86MCInstLower.cpp
  llvm/lib/Target/X86/X86Subtarget.cpp
  llvm/test/CodeGen/X86/tagged-globals-pic.ll

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