[commit: ghc] master: Stress test for nested module hierarchies (e527fc2)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/e527fc2e90958280a36645b6bd0223861cc50a55/ghc

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commit e527fc2e90958280a36645b6bd0223861cc50a55
Author: Bartosz Nitka <niteria at gmail.com>
Date:   Mon May 15 04:14:01 2017 -0700

    Stress test for nested module hierarchies
    
    I'm optimizing a case that is well approximated by
    multiple layers of modules where every module in a layer
    imports all the modules in the layer below.
    
    It turns out I regressed performance on such cases in 7fea7121.
    I'm adding a test case to track improvements and prevent
    future regressions.
    
    Test Plan: ./validate
    
    Reviewers: simonmar, austin, bgamari
    
    Reviewed By: simonmar
    
    Subscribers: rwbarton, thomie
    
    Differential Revision: https://phabricator.haskell.org/D3575


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e527fc2e90958280a36645b6bd0223861cc50a55
 compiler/deSugar/DsUsage.hs                        |  4 ++--
 compiler/iface/MkIface.hs                          |  5 ++---
 compiler/typecheck/TcRnDriver.hs                   | 14 ++++++-------
 compiler/typecheck/TcRnTypes.hs                    | 24 ++++++++++++++--------
 testsuite/tests/perf/compiler/all.T                | 12 +++++++++++
 testsuite/tests/perf/compiler/genMultiLayerModules | 21 +++++++++++++++++++
 6 files changed, 60 insertions(+), 20 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 e527fc2e90958280a36645b6bd0223861cc50a55