This site tracks the performance of the D compiler. Every merge into
master of dlang/dmd
gets one point, CI builds that commit with ldc compiler with PGO and LTO, and measures it.
Most numbers are instruction counts from cachegrind: compiling hello.d,
Phobos and a vibe.d app. They barely move between runs, so a change of
0.1% is real. The sizes of dmd and of a hello world are stripped binary
sizes. Peak memory and the time dmd takes to build itself are noisier
because they depend on the runner machine. The compile phases come from
-ftime-trace and it's wall clock time.
PERF.md
has the command behind each metric.
The data is one JSON file per merge in dlang/dmd-perf-data, written by the perf workflow in dlang/dmd.
