[PATCH] D115620: [AArch64] Lowering and legalization of strict FP16

[John Brawn via Phabricator via llvm-commits]

john.brawn created this revision.
john.brawn added reviewers: t.p.northover, kpn, dmgreen, bsmith.
Herald added subscribers: hiraditya, kristof.beyls.
john.brawn requested review of this revision.
Herald added a project: LLVM.

For strict FP16 to work correctly needs some changes in lowering and legalization:

- SelectionDAGLegalize::PromoteNode was missing handling for some strict fp opcodes.
- Some of the custom lowering of strict fp operations needed to be adjusted to work with FP16.
- Custom lowering needed to be added for round-to-int operations.

With this, and the previous patch for the rest of the strict fp isel, we can set IsStrictFPEnabled = true.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D115620

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/fp-intrinsics-fp16.ll
  llvm/test/CodeGen/AArch64/fp-intrinsics.ll

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