[commit: ghc] master: Derive the Generic instance in perf/compiler/T5642 (34010db)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/34010dbe77ac405da6c671c3feb3573d0d025379/ghc

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commit 34010dbe77ac405da6c671c3feb3573d0d025379
Author: Ryan Scott <ryan.gl.scott at gmail.com>
Date:   Mon Sep 5 15:45:38 2016 -0400

    Derive the Generic instance in perf/compiler/T5642
    
    Summary:
    For some inexplicable reason, the `Generic` instance in
    `perf/compiler/T5642` is written out entirely by hand. This is not only
    strange, since Trac #5642 is about derived `Generic` instances, but it also
    annoying to maintain, since it requires manually changing a bunch of code
    whenever the algorithm behind `deriving Generic` changes. (See D2304 for a
    recent example of this.)
    
    It seems more sensible to just derive the `Generic` instance. It shifts the
    goalposts of what allocations we're measuring a bit, since we no longer have
    to parse a large amount of code (and as a knock-on effect, the allocations go
    down a bit). But I think this program is morally equivalent to what we were
    benchmarking before, so it's not too unreasonable to change.
    
    Test Plan: make test TEST=T5642
    
    Reviewers: austin, thomie, bgamari
    
    Reviewed By: bgamari
    
    Differential Revision: https://phabricator.haskell.org/D2511
    
    GHC Trac Issues: #5642


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34010dbe77ac405da6c671c3feb3573d0d025379
 testsuite/tests/perf/compiler/T5642.hs | 875 +--------------------------------
 testsuite/tests/perf/compiler/all.T    |   3 +-
 2 files changed, 4 insertions(+), 874 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 34010dbe77ac405da6c671c3feb3573d0d025379