tree f053f654ee32ccf062d08f2efb52ba71bee69719
parent 90c4215af4246e4cb5183c74bd73577389a86bdd
author Vyacheslav Egorov <vegorov@google.com> 1527886713 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1527886713 +0000

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

Relanding 4be50d6fa1737dcb8402041ecb7334e5a34ba3a1 with fixes to DBC
and location summaries: AssertAssignable must save FPU registers.

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


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: Ifb55f86453bfdf36a2e03bcd7f3197cfde257103
Reviewed-on: https://dart-review.googlesource.com/57980
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Régis Crelier <regis@google.com>