sdk/runtime/vm/compiler/assembler at 29c76d76047ea38bf3615ddfb8d290e053813abe - sdk

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Martin Kustermann cf8a6063f8 [VM] Improve AssertAssignable/InstanceOf by having a fast case for non-generic, instantiated types

When the type to test against is instantiated and has no type arguments
there is a high probability that we receive instances of that class or
subclasses at runtime.

This CL therefore extends the fast-path of AssertAssignable/InstanceOf
by checking whether the instance class id is within the cid ranges that
directly/indirectly implement/extend the type to test against.

Currently we have an almost depth-first preorder numbering of class ids
in AOT, but there are exceptions.  So each class can have a number of
cid-ranges as subclasses / classes which implement it's interface.

This seems to improve performance of dart-aot-v2
  * flutter stock build by 15+%
  * DeltaBlueClosures by 10+%

and reduces code size on
  * flutter gallery by -3%

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

Change-Id: I07dd91589cc3fcd8c5952bdba339e2e2a459e08e
Reviewed-on: https://dart-review.googlesource.com/35620
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>

2018-01-25 07:13:42 +00:00

assembler_arm64_test.cc

[VM] Fix ARM64 test to clear register before use

2017-11-22 16:03:44 +00:00

assembler_arm64.cc

[VM] Use new Write barrier filters.

2017-12-21 09:59:03 +00:00

assembler_arm64.h

Reapply "[vm, arm64] Add assembler support for tbz and use it for BranchIfSmi."

2017-11-21 23:38:05 +00:00

assembler_arm_test.cc

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