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.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 56 bytes