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| author | Simon Peyton Jones <simonpj@microsoft.com> | 2022-11-09 12:08:06 +0000 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2022-11-11 13:18:07 -0500 |
| commit | d0c691b6110b11a43d5ea2685d17bc001d2298da (patch) | |
| tree | 3de6c1a31b444e687936b03063921091d0182f21 /compiler/GHC/Linker/Windows.hs | |
| parent | 6dab0046b575e102bf3245fd63d5ac6bc6f4204d (diff) | |
| download | haskell-d0c691b6110b11a43d5ea2685d17bc001d2298da.tar.gz | |
Add a fast path for data constructor workers
See Note [Fast path for data constructors] in
GHC.Core.Opt.Simplify.Iteration
This bypasses lots of expensive logic, in the special case of
applications of data constructors. It is a surprisingly worthwhile
improvement, as you can see in the figures below.
Metrics: compile_time/bytes allocated
------------------------------------------------
CoOpt_Read(normal) -2.0%
CoOpt_Singletons(normal) -2.0%
ManyConstructors(normal) -1.3%
T10421(normal) -1.9% GOOD
T10421a(normal) -1.5%
T10858(normal) -1.6%
T11545(normal) -1.7%
T12234(optasm) -1.3%
T12425(optasm) -1.9% GOOD
T13035(normal) -1.0% GOOD
T13056(optasm) -1.8%
T13253(normal) -3.3% GOOD
T15164(normal) -1.7%
T15304(normal) -3.4%
T15630(normal) -2.8%
T16577(normal) -4.3% GOOD
T17096(normal) -1.1%
T17516(normal) -3.1%
T18282(normal) -1.9%
T18304(normal) -1.2%
T18698a(normal) -1.2% GOOD
T18698b(normal) -1.5% GOOD
T18923(normal) -1.3%
T1969(normal) -1.3% GOOD
T19695(normal) -4.4% GOOD
T21839c(normal) -2.7% GOOD
T21839r(normal) -2.7% GOOD
T4801(normal) -3.8% GOOD
T5642(normal) -3.1% GOOD
T6048(optasm) -2.5% GOOD
T9020(optasm) -2.7% GOOD
T9630(normal) -2.1% GOOD
T9961(normal) -11.7% GOOD
WWRec(normal) -1.0%
geo. mean -1.1%
minimum -11.7%
maximum +0.1%
Metric Decrease:
T10421
T12425
T13035
T13253
T16577
T18698a
T18698b
T1969
T19695
T21839c
T21839r
T4801
T5642
T6048
T9020
T9630
T9961
Diffstat (limited to 'compiler/GHC/Linker/Windows.hs')
0 files changed, 0 insertions, 0 deletions