README.md

GHC Testsuite Readme

For the full testsuite documentation, please see here.

Quick Guide

Commands to run testsuite:

• Full testsuite: make
• Using more threads: make THREADS=12
• Reduced (fast) testsuite: make fast
• Run a specific test: make TEST=tc054
• Test a specific 'way': make WAY=optllvm
• Keeping the run directory after test run: make CLEANUP=0. You will find a directory {test_name}.run in the test's source directory.
• Test a specifc stage of GHC: make stage=1
• Skip performance tests: make SKIP_PERF_TESTS=YES
• Set verbosity: make VERBOSE=n where n=0: No per-test output, n=1: Only failures, n=2: Progress output, n=3: Include commands called (default), n=4: Include perf test results unconditionally, n=5: Echo commands in subsidiary make invocations
• Pass in extra GHC options: make EXTRA_HC_OPTS=-fvectorize

You can also change directory to a specific test folder to run that individual test or group of tests. For example:

$ cd tests/array
$ make

Testsuite Ways

The testsuite can be run in a variety of 'ways'. This concept refers to different ways that GHC can compile the code. For example, using the native code generator (-fasm) is one way, while using the LLVM code generator (-fllvm) is another way.

The various ways that GHC supports are defined in config/ghc

Adding Tests

Please see the more extensive documentation here.