syntax_data: {"ast_node_type":"other","tokens":[{"end":15,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // targets.
context_before:     // to use hardfloats even if the hardware supports them, so we do this for all softfloat
context_after:     if let BackendRepr::Scalar(s) = arg.layout.backend_repr