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Summary: Constant stores of f16 vectors can create NvCast nodes from various operand types to v4f16 or v8f16 depending on patterns in the stored constants. This patch adds nvcast rules with v4f16 and v8f16 values. AArchISelLowering::LowerBUILD_VECTOR has the details on which constant patterns generate the nvcast nodes. Reviewers: jmolloy, srhines, ab Subscribers: rengolin, aemerson, llvm-commits Differential Revision: http://reviews.llvm.org/D9201 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235610 91177308-0d34-0410-b5e6-96231b3b80d8
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