[PATCH] D86078: [AArch64] Improved lowering for saturating float to int.

[Bevin Hansson via Phabricator via llvm-commits]

ebevhan created this revision.
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Herald added subscribers: llvm-commits, danielkiss, hiraditya, kristof.beyls.
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Adapted from D54696 <https://reviews.llvm.org/D54696> by @nikic.

This patch improves the default lowering of saturating
float to int conversions, FP_TO_[SU]INT_SAT, on AArch64.
Since the default FP_TO_INT operations on AArch64 are
already saturating, we can take advantage of this
behavior in the lowering for the saturating operations.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D86078

Files:
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/test/CodeGen/AArch64/fptosi-sat-scalar.ll
  llvm/test/CodeGen/AArch64/fptosi-sat-vector.ll
  llvm/test/CodeGen/AArch64/fptoui-sat-scalar.ll
  llvm/test/CodeGen/AArch64/fptoui-sat-vector.ll

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