tree 16528e65b0139455d26ed9714abcb466e94b8e02
parent a2cca0ad2b7d807f3370245280b34eddda23fa1b
author Vyacheslav Egorov <vegorov@google.com> 1530303109 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1530303109 +0000

[vm/compiler] Teach compiler to fold load of type_args_len from constant args desc.

This allows optimizer to eliminate redundant code branching on type_args_len
which arises when inlining generic methods.

Start refactoring how loads of native fields are represented: instead of simply
setting a bunch of unrelated attributes introduce NativeFieldDesc structure
that captures attributes of native fields, which don't have representation
as Field objects.

Over the time we should be able to eliminate "raw" LoadField/StoreInstanceField
instructions that just address fields by their offset and use NativeFieldDesc-s
in load forwarding to disambiguate different native fields that happen to
have the same offset.

Change-Id: I91658888e17bd68c5f9d4f2e1a783b2827efe61f
Reviewed-on: https://dart-review.googlesource.com/62304
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>