[PATCH] D76160: [PowerPC][Future] Add offsets to PC Relative relocations.

[Stefan Pintilie via Phabricator via llvm-commits]

stefanp created this revision.
stefanp added reviewers: nemanjai, lei, PowerPC, hfinkel.
Herald added subscribers: shchenz, kbarton, hiraditya.

This is an optimization that applies to global addresses and allows for the following transformation:
Convert this:

  paddi r3, 0, symbol at PCREL, 1
  ld r4, 8(r3)

To this:

  pld r4, symbol at PCREL+8(0), 1

An instruction is saved and the linker can do the addition when the symbol is resolved.


https://reviews.llvm.org/D76160

Files:
  llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
  llvm/lib/Target/PowerPC/PPCISelLowering.cpp
  llvm/test/CodeGen/PowerPC/global-address-non-got-indirect-access.ll

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