tree 16134a1b2ce8d6a481a7522475dfcea3d239854c
parent 28a8fa50f67b442ea9e17868a16a95f4c9f39204
author Aart Bik <ajcbik@google.com> 1540416696 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1540416696 +0000

[vm/compiler] Use loop framework for AOT inline heuristics

Rationale:
Without proper execution counters, the inline AOT inliner
marks every call site "cold", effectively disabling inlining
altogether. This change introduces loop-based static heuristic
that assumes statements nested inside loops are executed more
frequently. This results in more inlining.

Note:
Conservative version is used for now which yields
more performance without increasing code size too much.
There is still a lot of performance left at the table
which we could exploit if we fine tune heuristics
regarding code size.

Bug:
https://github.com/dart-lang/sdk/issues/34473
https://github.com/dart-lang/sdk/issues/32167


Change-Id: I86ba60f93bdab363cd22ab6bdbcf6688f2042fea
Reviewed-on: https://dart-review.googlesource.com/c/81187
Commit-Queue: Aart Bik <ajcbik@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>