[commit: ghc] ghc-7.10: Fix a profiling bug (1d401b4)

[git at git.haskell.org]

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

On branch  : ghc-7.10
Link       : http://ghc.haskell.org/trac/ghc/changeset/1d401b4384b5f9c7429140320e1d0bc120172b8b/ghc

>---------------------------------------------------------------

commit 1d401b4384b5f9c7429140320e1d0bc120172b8b
Author: Simon Marlow <marlowsd at gmail.com>
Date:   Wed Jan 28 11:25:52 2015 +0000

    Fix a profiling bug
    
    Summary:
    We were erroneously discarding SCCs on function-typed variables.
    These can affect the call stack, so we have to retain them.  The bug
    was introduced during the recent SourceNote refactoring.
    
    This is an alternative to the fix proposed in D616.  I also added the
    scc005 test from that diff, which works with this change.
    
    While I was here, I also fixed up the other profiling tests, marking a
    few as expect_broken_for(10037) where the opt/unopt output differs in
    non-fatal ways.
    
    Test Plan: profiling tests
    
    Reviewers: scpmw, ezyang, austin
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D636
    
    GHC Trac Issues: #10007
    
    (cherry picked from commit daed18c35cda114d8a5303bcb645195e1fd397e3)


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1d401b4384b5f9c7429140320e1d0bc120172b8b
 compiler/coreSyn/CoreUtils.hs                      | 12 ++++-
 .../tests/profiling/should_run/T2552.prof.sample   | 56 ++++++++++------------
 testsuite/tests/profiling/should_run/all.T         | 19 ++++++--
 .../tests/profiling/should_run/ioprof.prof.sample  | 41 ++++++++--------
 .../profiling/should_run/prof-doc-fib.prof.sample  | 31 ++++++------
 testsuite/tests/profiling/should_run/scc005.hs     | 10 ++++
 .../tests/profiling/should_run/scc005.prof.sample  | 27 +++++++++++
 7 files changed, 125 insertions(+), 71 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 1d401b4384b5f9c7429140320e1d0bc120172b8b