[all-commits] [llvm/llvm-project] 4e408a: [AArch64][GlobalISel] Select full-fp16 s16 G_FCONS...

[Jessica Paquette via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4e408aae2c55a8fd71b5a96eb86db350a7acc443
      https://github.com/llvm/llvm-project/commit/4e408aae2c55a8fd71b5a96eb86db350a7acc443
  Author: Jessica Paquette <jpaquette at apple.com>
  Date:   2021-09-10 (Fri, 10 Sep 2021)

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

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

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 There were some out-of-date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.

Differential Revision: https://reviews.llvm.org/D108957