[PATCH] D108957: [AArch64][GlobalISel] Select full-fp16 s16 G_FCONSTANT as a constant pool load

[Jessica Paquette via Phabricator via llvm-commits]

paquette created this revision.
paquette added reviewers: aemerson, jroelofs.
Herald added subscribers: hiraditya, kristof.beyls, rovka.
paquette requested review of this revision.
Herald added a project: LLVM.

When we have full-fp16 support, we should (manually select) s16 G_FCONSTANT to a constant pool load.

Add support for that to `emitLoadFromConstantPool` + the existing constant selection code.

Also tidy up the constant selection code a little. There were some out-of-date comments + some dead code.


https://reviews.llvm.org/D108957

Files:
  llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/select-fp16-fconstant.mir

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