languages/dart-sdk
languages/dart-sdk
1
0
Fork 0
mirror of https://github.com/dart-lang/sdk synced 2024-09-06 00:59:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

[kernel] Call Reference.node less; make it inlinable

Browse source 
This CL splits up `Reference.node` in to the most-often fast-case and the
has-to-load case, making the procedure smaller which makes the VM inline
it. This was "verified" by looking at the VMs optimized flow graph for
`Reference.asClass`.

This CL furthermore reduces the number of "calls" to `Reference.node`
by almost half (a reduction of over 3 mio calls when compiling
`compile.dart`) by "caching" the `.node` call in the `as*` methods.

Change-Id: I7b5497397a11f05fdeaf05d6cc420072d98dc030
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/298101
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
This commit is contained in:
Jens Johansen 2023-04-25 10:21:46 +00:00 committed by Commit Queue
parent e5c2dd28c7
commit dc77baa5a8
1 changed files with 30 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

48
pkg/kernel/lib/canonical_name.dart
View file

@ -438,26 +438,29 @@ class Reference {
NamedNode? _node;
NamedNode? get node {
if (_node == null) {
// Either this is an unbound reference or it belongs to a lazy-loaded
// (and not yet loaded) class. If it belongs to a lazy-loaded class,
// load the class.
return _node ?? _tryLoadNode();
}
CanonicalName? canonicalNameParent = canonicalName?.parent;
while (canonicalNameParent != null) {
if (canonicalNameParent.name.startsWith("@")) {
break;
}
canonicalNameParent = canonicalNameParent.parent;
/// If the node belongs to a lazy-loaded class load the class.
///
/// Should only be called if [_node] is null, meaning that either this
/// is an unbound reference or it belongs to a lazy-loaded
/// (and not yet loaded) class. If it belongs to a lazy-loaded class this call
/// will load the class and set [_node].
NamedNode? _tryLoadNode() {
CanonicalName? canonicalNameParent = canonicalName?.parent;
while (canonicalNameParent != null) {
if (canonicalNameParent.name.startsWith("@")) {
break;
}
if (canonicalNameParent != null) {
NamedNode? parentNamedNode =
canonicalNameParent.parent?.reference._node;
if (parentNamedNode is Class) {
Class parentClass = parentNamedNode;
if (parentClass.lazyBuilder != null) {
parentClass.ensureLoaded();
}
canonicalNameParent = canonicalNameParent.parent;
}
if (canonicalNameParent != null) {
NamedNode? parentNamedNode = canonicalNameParent.parent?.reference._node;
if (parentNamedNode is Class) {
Class parentClass = parentNamedNode;
if (parentClass.lazyBuilder != null) {
parentClass.ensureLoaded();
}
}
}
@ -499,6 +502,7 @@ class Reference {
}
Library get asLibrary {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. A library was expected';
}
@ -506,6 +510,7 @@ class Reference {
}
Class get asClass {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. A class was expected';
}
@ -513,6 +518,7 @@ class Reference {
}
Member get asMember {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. A member was expected';
}
@ -520,6 +526,7 @@ class Reference {
}
Field get asField {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. A field was expected';
}
@ -527,6 +534,7 @@ class Reference {
}
Constructor get asConstructor {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. A constructor was expected';
}
@ -534,6 +542,7 @@ class Reference {
}
Procedure get asProcedure {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. A procedure was expected';
}
@ -541,6 +550,7 @@ class Reference {
}
Typedef get asTypedef {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. A typedef was expected';
}
@ -548,6 +558,7 @@ class Reference {
}
Extension get asExtension {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. An extension was expected';
}
@ -555,6 +566,7 @@ class Reference {
}
InlineClass get asInlineClass {
NamedNode? node = this.node;
if (node == null) {
throw '$this is not bound to an AST node. An inline class was expected';
}