[PATCH] D126807: [PowerPC] Fix LQ-STQ instructions to use correct offset and base

[Kai Luo via Phabricator via llvm-commits]

lkail added a comment.

> That would be expanded in PPCInstrInfo::expandPostRAPseudo()

Looks also viable as long as we do it after prologepilog.

Note that we might need an additional register in `outs` to keep the result of the sum of two registers in `memrr`.

  // handle x-form during isel.
  def LQX_PSEUDO : PPCPostRAExpPseudo<(outs g8prc:$RTp, g8rc:$scratch),
                                      (ins memrr:$src), "#LQX_PSEUDO", []>;
  def STQX_PSEUDO : PPCPostRAExpPseudo<(outs g8rc:$scratch),
                                       (ins g8prc:$RSp, memrr:$dst),
                                       "#STQX_PSEUDO", []>;


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D126807/new/

https://reviews.llvm.org/D126807