tree d0d698f6b3b4faf85f5e34cd44c17c03a8fcb1c6
parent bd57f9a83747322e5f6bb3c84165ba83e14a2495
author Alexander Aprelev <aam@google.com> 1638259825 +0000
committer Commit Bot <commit-bot@chromium.org> 1638259825 +0000

[vm/jit/unboxed] Remove heuristic that transitions unboxed fields back to boxed.

The heuristic was introduced in b870dafa4f04a117366292b5824739d8f1806fb0, but gets in the way of maintaining Slot(extended with field guard information) immutable during compilation.

Existing set of benchmarks doesn't seem to show any reasonable regression with this heuristic removed.

Bug: https://github.com/dart-lang/sdk/issues/47722
Change-Id: Ie94050d96852b7ffef2dc81248cda23e84d41f4b
TEST=ci
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/221544
Reviewed-by: Slava Egorov <vegorov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>