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author | Andreas Klebinger <klebinger.andreas@gmx.at> | 2022-04-07 17:21:47 +0200 |
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committer | Andreas Klebinger <klebinger.andreas@gmx.at> | 2022-08-05 18:57:28 +0200 |
commit | a37161cf4c6ab46fe64b2d1ab2863d4f143601eb (patch) | |
tree | 2cc0ed02ddda15539f9389ed027d45c7bd4dacbf /docs/core-spec/CoreSyn.ott | |
parent | f0aec520ed7026eb79ec2279fe1055f1806a9a21 (diff) | |
download | haskell-wip/andreask/late_cc.tar.gz |
Change `-fprof-late` to insert cost centres after unfolding creation.wip/andreask/late_cc
The former behaviour of adding cost centres after optimization but
before unfoldings are created is not available via the flag
`prof-late-inline` instead.
I also reduced the overhead of -fprof-late* by pushing the cost centres
into lambdas. This means the cost centres will only account for
execution of functions and not their partial application.
Further I made LATE_CC cost centres it's own CC flavour so they now
won't clash with user defined ones if a user uses the same string for
a custom scc.
LateCC: Don't put cost centres inside constructor workers.
With -fprof-late they are rarely useful as the worker is usually
inlined. Even if the worker is not inlined or we use -fprof-late-linline
they are generally not helpful but bloat compile and run time
significantly. So we just don't add sccs inside constructor workers.
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Metric Decrease:
T13701
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Diffstat (limited to 'docs/core-spec/CoreSyn.ott')
0 files changed, 0 insertions, 0 deletions