198ba3bd1c
Implementing the Graph traits for the BasicCoverageBlock graph. optimized replacement of counters with expressions plus new BCB graphviz * Avoid adding coverage to unreachable blocks. * Special case for Goto at the end of the body. Make it non-reportable. Improved debugging and formatting options (from env) Don't automatically add counters to BCBs without CoverageSpans. They may still get counters but only if there are dependencies from other BCBs that have spans, I think. Make CodeRegions optional for Counters too. It is possible to inject counters (`llvm.instrprof.increment` intrinsic calls without corresponding code regions in the coverage map. An expression can still uses these counter values. Refactored instrument_coverage.rs -> instrument_coverage/mod.rs, and then broke up the mod into multiple files. Compiling with coverage, with the expression optimization, works on the json5format crate and its dependencies. Refactored debug features from mod.rs to debug.rs |
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| src | ||
| Cargo.toml | ||
| README.md | ||
The codegen crate contains the code to convert from MIR into LLVM IR,
and then from LLVM IR into machine code. In general it contains code
that runs towards the end of the compilation process.
For more information about how codegen works, see the rustc dev guide.