syntax_data: {"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if let BackendRepr::Scalar(scalar) = arg.layout.backend_repr
context_before:     // Always sign extend u32 values on 64-bit mips
context_after:         && let Primitive::Int(i, signed) = scalar.primitive()