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from acfba51 [ThinLTO] Remove unused/incomplete lazy summary reading suppo [...] new 7c23aa2 [MachineCombiner] Support for floating-point FMA on ARM64

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Summary of changes: include/llvm/CodeGen/MachineCombinerPattern.h | 35 +- include/llvm/CodeGen/SelectionDAGTargetInfo.h | 6 + include/llvm/Target/TargetInstrInfo.h | 5 + lib/CodeGen/MachineCombiner.cpp | 12 +- lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 13 +- lib/CodeGen/TargetInstrInfo.cpp | 6 +- lib/Target/AArch64/AArch64InstrInfo.cpp | 580 +++++++++++++++++++++++-- lib/Target/AArch64/AArch64InstrInfo.h | 5 + lib/Target/AArch64/AArch64SelectionDAGInfo.cpp | 6 + lib/Target/AArch64/AArch64SelectionDAGInfo.h | 1 + test/CodeGen/AArch64/arm64-fma-combines.ll | 136 ++++++ test/CodeGen/AArch64/arm64-fml-combines.ll | 128 ++++++ 12 files changed, 893 insertions(+), 40 deletions(-) create mode 100644 test/CodeGen/AArch64/arm64-fma-combines.ll create mode 100644 test/CodeGen/AArch64/arm64-fml-combines.ll