tree 7381e742dadf20a18a6a88b4fd1b82f8ef974a15
parent 040ef6aabb9476a676ec8868f7fef5895dc314f9
author Jens Johansen <jensj@google.com> 1543577223 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1543577223 +0000

Do UTF8 encoding slightly differently when serializing kernel

Instead of creating two small-ish utf8lists for every string we encode,
do fewer bigger allocations and convert to utf8 via a (new) method that
will hopefully eventually be moved into String.

Golem says:

ia32

AstToBinaryP90 (Intel Core i5)	3.995% (0.2 noise)
AstToBinary (Intel Core i5)	3.992% (0.2 noise)
AstToBinaryP50 (Intel Core i5)	4.015% (0.2 noise)
AstToBinary (Intel Xeon)	3.793% (0.3 noise)
AstToBinaryP90 (Intel Xeon)	3.748% (0.3 noise)
AstToBinaryP50 (Intel Xeon)	3.769% (0.3 noise)


x64


AstToBinaryP90 (Intel Core i5)	4.220% (0.1 noise)
AstToBinaryP50 (Intel Xeon)	4.543% (0.3 noise)
AstToBinary (Intel Xeon)	4.614% (0.3 noise)
AstToBinaryP90 (Intel Xeon)	4.891% (0.3 noise)
AstToBinaryP50 (Intel Core i5)	5.448% (0.5 noise)
AstToBinary (Intel Core i5)	5.155% (0.5 noise)

Change-Id: I0532778d69205a7a187342d3bdfe503c660b1004
Reviewed-on: https://dart-review.googlesource.com/c/84413
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>