* We adjust for the specialisation of Data.List by hiding the generic
  version from the Prelude.

This should make this change backwards compatible with older base
versions.

* Adjust the gc benchmarks. I've mostly made them the same as their
  non-gc parts now.

This introduces a Shake-based build system, building on Neil Mitchell's
prototype from several years ago [1].

This build system has a number of features relative to the existing
make-based build system:

 * results are produced in a common CSV structure, making it easy to use
   the included analysis tool nofib-compare, to compare results from tests
   outside of nofib.
 * Cachegrind runs can be run in parallel, greatly speeding up such
   measurements
 * native support for (micro-)architectural performance counters on
   Linux via `perf stat`

[1] https://gist.github.com/ndmitchell/4733855

There are also a few more changes to tests to make this build system
work well with nofib.

In particular:

* The Main module for some benchmarks has been renamed.
* The boot phase of benchmarks is now done by a boot.sh script.
* Replace some uses of perl with ghci.
* Some benchmarks that we didn't use to run by default had
  missing/wrong(!) stdout files. I added/updated these.

Take note that shake will run *more* benchmarks by default than make
used to. So you might want to select a subset of benchmarks to run when
using it.

Since morally these flags are for the program and not runtest

Instead of passing package dependencies via `SRC_HC_OPTS=-package ...`
we rather pass them via `SRC_DEPS`, allowing the build system to
know about the dependency.

Vladislav Zavialov authored 5 years ago and Sebastian Graf committed 5 years ago

GHC Proposal #229 changes the lexical rules of Haskell, which may
require slight whitespace adjustments in certain cases.

This patch changes formatting in nofib in a way that enables it to
compile under the proposed rules.

Runtime for nofib benchmarks was all over the place.
This patch adjusts runtime for most benchmarks such
that it falls into the 0.2-2s range.

This means that:
* A default run will take longer
* Time spent will be better distributed among benchmarks.
* More benchmarks have runtimes long enough to be used
  for runtime analysis.

Some more changes were done which go hand in hand
with changing runtimes.
* Some benchmarks now create their input files during boot.
* Moved input files for anna in their own directory.
* Remove printing of output for some of the floating
  point heavy benchmarks.
* Added a comment about desired runtimes to README.
* Made grep actually benchmark something.
* Throw cachgrind out of the default benchmarks.
  The nondeterministic behaviour has been an issue for a
  while and it doesn't seem like an essential benchmark.

Test Plan: run nofib in modes slow/normal/fast

Reviewers: O26 nofib, alpmestan

Reviewed By: alpmestan

Subscribers: sgraf, alpmestan

Differential Revision: https://phabricator.haskell.org/D4989

Matthew Pickering authored 6 years ago and Ben Gamari committed 6 years ago

Reviewers: michalt, bgamari, O26 nofib, goldfire

Reviewed By: michalt, O26 nofib

Differential Revision: https://phabricator.haskell.org/D4045

Douglas Wilson authored 6 years ago and Ben Gamari committed 6 years ago

Reviewers: O26 nofib, michalt

Reviewed By: O26 nofib, michalt

Subscribers: michalt

Differential Revision: https://phabricator.haskell.org/D4391

Summary:
I'm not sure how this worked previously, but we clearly need to link
against array here.

Test Plan: Build it

Reviewers: michalt, O26 nofib

Reviewed By: michalt, O26 nofib

Differential Revision: https://phabricator.haskell.org/D3295

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>

This reverts commit 0449cb06.

Conflicts:

	.gitignore