Struct rustc_codegen_llvm::coverageinfo::mapgen::CoverageMapGenerator

struct CoverageMapGenerator {
    filenames: FxIndexSet<CString>,
}

Fields

filenames: FxIndexSet<CString>

Implementations

impl CoverageMapGenerator

fn new() -> Self

fn write_coverage_mapping<'a>(
    &mut self,
    expressions: Vec<CounterExpression>,
    counter_regions: impl Iterator<Item = (Counter, &'a CodeRegion)>,
    coverage_mapping_buffer: &RustString
)

Using the expressions and counter_regions collected for the current function, generate the mapping_regions and virtual_file_mapping, and capture any new filenames. Then use LLVM APIs to encode the virtual_file_mapping, expressions, and mapping_regions into the given coverage_mapping byte buffer, compliant with the LLVM Coverage Mapping format.

fn generate_coverage_map<'ll, 'tcx>(
    self,
    cx: &CodegenCx<'ll, 'tcx>,
    version: u32,
    filenames_size: usize,
    filenames_val: &'ll Value
) -> &'ll Value

Construct coverage map header and the array of function records, and combine them into the coverage map. Save the coverage map data into the LLVM IR as a static global using a specific, well-known section and name.