tree f5c25f8472c42481aa6e1af1eafca0a9781894fa
parent 1d8bef0d89e3fa92c15ab928fd085790f00aace7
author Vyacheslav Egorov <vegorov@google.com> 1527850209 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1527850209 +0000

[vm] Enable type stubs based type checks in JIT mode for some types.

For now we are limiting this to type checks against type parameter types.

# Performance improvements

In Dart 1 mode Dart2JS compiles itself in 28s when running from source
and in 23s when running from ideal app-jit snapshot (trained on the
same workload).

Before this change in Dart 2 mode numbers were 51s and 57s respectively.

After this change in Dart 2 mode numbers are 38s and 32s. Meaning
that regression is reduced by 50%.

Issue https://github.com/dart-lang/sdk/issues/31798
Issue https://github.com/dart-lang/sdk/issues/33257

Change-Id: I34bf5385a5cc3c7702dc281c6dfa89da85d3dde1
Reviewed-on: https://dart-review.googlesource.com/57601
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>