Function cranelift_codegen::write::write_block_header

pub fn write_block_header(
    w: &mut dyn Write, 
    func: &Function, 
    isa: Option<&dyn TargetIsa>, 
    block: Block, 
    indent: usize
) -> Result

Write out the basic block header, outdented:

block1: block1(v1: i32): block10(v4: f64, v5: b1):