rustc_codegen_llvm::coverageinfo::llvm_cov

Function write_function_mappings_to_buffer

Source 
pub(crate) fn write_function_mappings_to_buffer(
    virtual_file_mapping: &[u32],
    expressions: &[CounterExpression],
    code_regions: &[CodeRegion],
    branch_regions: &[BranchRegion],
    mcdc_branch_regions: &[MCDCBranchRegion],
    mcdc_decision_regions: &[MCDCDecisionRegion],
) -> Vec<u8>