Skip to content

Latest commit

 

History

History
44 lines (28 loc) · 1.13 KB

GettingStarted.md

File metadata and controls

44 lines (28 loc) · 1.13 KB
Raw

Building

cargo +stage1 build

Running tests

Run tests with TXN=true cargo +stage1 test.

The RUSTC_LOG environment variable sets the log level per package with RUSTC_LOG=$package=$level, e.g. RUSTC_LOG=rustc_mir::transform::transaction=debug. The log levels are warn, debug, and info.

Output logs to a file with |& tee out.log.

Get backtrace information on panic with RUST_BACKTRACE=1.

All together:

RUSTC_LOG=rustc_mir::transform::transaction=debug TXN=true RUST_BACKTRACE=1 cargo +stage1 test

The test binaries are cached, so if you rebuild the compiler you'll need to rebuild the binary manually. I usually do cargo clean and then cargo +stage1 test again, or specifically delete my desired binary at target/debug/deps/test-name-012345 where 012345 is some hash, then rebuild.

Performance Evaluation

Get test data by enabling debug output with -- --nocapture.

TXN=true cargo +stage1 test linear -- --nocapture

Viewing MIR

.cargo/config ensures that cargo commands emit MIR by default.

MIR will be located in:

target/debug/deps/$filename-$hash.mir