[PATCH] [AArch64] Promote all/most f16 ops to f32

[Ahmed Bougacha]

I'll piggyback on Steve's reply to http://reviews.llvm.org/D8755 and mark this as accepted: the repeated-narrowing generated by the operation-promotion is correct from a rounding standpoint (and, as I understand it, we can't avoid the narrowing coming from IR, except with fast-math or some dedicated it's-ok-to-promote flag;  clang should promote expressions anyway, so I don't think this is an issue), and this is all I wanted to know =)

-Ahmed


http://reviews.llvm.org/D8648

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