[PATCH] D66898: [AArch64][GlobalISel] Select @llvm.aarch64.ldxr.* intrinsics

[Jessica Paquette via Phabricator via llvm-commits]

paquette created this revision.
paquette added a reviewer: aemerson.
Herald added subscribers: Petar.Avramovic, hiraditya, kristof.beyls, javed.absar, rovka.
Herald added a project: LLVM.
paquette added parent revisions: D66897: [AArch64][GlobalISel] Select @llvm.aarch64.ldaxr.* intrinsics, D66769: [GlobalISel] Import patterns containing SUBREG_TO_REG.

Same thing as D66897 <https://reviews.llvm.org/D66897>, but for ldxr.* instead. Add a GISelPredicateCode to the ldxr_* definitions, which allows us to import them.

Add select-ldxr-intrin.mir, and update arm64-ldxr-stxr.ll.

Relies on D66897 <https://reviews.llvm.org/D66897> because it uses `isLoadStoreOfNumBytes`.


https://reviews.llvm.org/D66898

Files:
  llvm/lib/Target/AArch64/AArch64InstrAtomics.td
  llvm/test/CodeGen/AArch64/GlobalISel/select-ldxr-intrin.mir
  llvm/test/CodeGen/AArch64/arm64-ldxr-stxr.ll

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