We now check all of the scripts which make up a library. If any
script is modified, then we consider that library to be modified. We
also consider any library which imports a modified library to be
modified. To propagate this info efficiently, we build and discard
the imported-by graph when beginning a reload.
The embedder must provide a FileModifiedCallback in order to support
the detection of modified scripts.
In order to detect changes to package: libraries, we have modified the
embedder interface to provide the resolved url when possible, so that
we don't need to re-resolve package uris when checking for reload.
This change is incompatible and all embedders will need to be updated.
We now support a "force" flag when reloading sources. This causes all
libraries to be reloaded regardless of whether the underlying scripts
have been updated.
Closes#26919R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2186423002 .
This analysis uses bit vectors to track side effects. Currently, there is
only one type of side effect which affects all mutable load-field instructions.
The elimination pass is a dominator tree preorder traversal like the existing
CSE pass. Instead of a hash-map it keeps an array with the current dominating
occurrence for each load expression.
Review URL: https://codereview.chromium.org//10914314
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12437 260f80e4-7a28-3924-810f-c04153c831b5
Zachary Anderson