[all-commits] [llvm/llvm-project] fcf70e: [SVE][CodeGen] Lower scalable fp_extend & fp_round...

[kmclaughlin-arm via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: fcf70e1e3b1d57d5fde6b99d0188d1b1774429af
      https://github.com/llvm/llvm-project/commit/fcf70e1e3b1d57d5fde6b99d0188d1b1774429af
  Author: Kerry McLaughlin <kerry.mclaughlin at arm.com>
  Date:   2020-10-01 (Thu, 01 Oct 2020)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.h
    M llvm/lib/Target/AArch64/AArch64InstrFormats.td
    M llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
    M llvm/lib/Target/AArch64/SVEInstrFormats.td
    M llvm/test/CodeGen/AArch64/sve-fcvt.ll
    M llvm/test/CodeGen/AArch64/sve-split-fcvt.ll

  Log Message:
  -----------
  [SVE][CodeGen] Lower scalable fp_extend & fp_round operations

This patch adds FP_EXTEND_MERGE_PASSTHRU & FP_ROUND_MERGE_PASSTHRU
ISD nodes, used to lower scalable vector fp_extend/fp_round operations.
fp_round has an additional argument, the 'trunc' flag, which is an integer of zero or one.

This also fixes a warning introduced by the new tests added to sve-split-fcvt.ll,
resulting from an implicit TypeSize -> uint64_t cast in SplitVecOp_FP_ROUND.

Reviewed By: sdesmalen, paulwalker-arm

Differential Revision: https://reviews.llvm.org/D88321