| commit | dfba8a7ca9f0ad7da7f7d9627290b79fa763699a | [log] [tgz] |
|---|---|---|
| author | Jens Johansen <jensj@google.com> | Thu Jul 31 01:52:02 2025 -0700 |
| committer | Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> | Thu Jul 31 01:52:02 2025 -0700 |
| tree | 89e749dcaad4f540d1d742556f7b78bedbced12d | |
| parent | f3d278ba81e2eef6df26f14674c04b9bee33f46f [diff] |
[CFE] Remove more allocation from iterators These are from `_Array.iterator` whereas the previous ones was from, iirc, `List.iterator`. * 7.41mb Import.finalizeImports * 1.13mb FindTypeVisitor.visitInterfaceType * 856.39kb new NamedTypeBuilderImpl * 815.92kb BodyBuilder.createSuperParametersAsArguments (values from uprobe) When compiling the CFE with the CFE I get this: ``` msec task-clock:u: -5.6347% +/- 0.5257% (-321.96 +/- 30.04) (5713.89 -> 5391.92) page-faults:u: 5.9842% +/- 0.0970% (6310.26 +/- 102.33) (105449.48 -> 111759.74) cycles:u: -6.0829% +/- 0.5338% (-1447602857.06 +/- 127036484.81) (23797839542.02 -> 22350236684.96) instructions:u: -4.9550% +/- 0.0008% (-1364113249.40 +/- 214444.14) (27529935457.16 -> 26165822207.76) branch-misses:u: -5.7909% +/- 2.2880% (-5395643.76 +/- 2131857.44) (93173948.12 -> 87778304.36) seconds time elapsed: -5.6275% +/- 0.5257% (-0.32 +/- 0.03) (5.72 -> 5.40) seconds user: -6.0582% +/- 0.5861% (-0.33 +/- 0.03) (5.47 -> 5.13) Scavenge( new space) goes from 63 to 61 Evacuate(store buffer) goes from 2 to 3 MarkSweep( old space) goes from 1 to 0 ``` As before the changes here are mostly "bogus" and likely caused by the GC being weird, see also https://dart-review.googlesource.com/c/sdk/+/438722 and https://dart-review.googlesource.com/c/sdk/+/438681. It does seem to consistently change the number of new space GCs though (65 -> 63 -> (here) 61). Change-Id: I18ef712394c1d98b8ed15c7fe6c4ac32fa9bc2e3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/438682 Commit-Queue: Jens Johansen <jensj@google.com> Reviewed-by: Chloe Stefantsova <cstefantsova@google.com>
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