Changeset 222425 in webkit for trunk/Source/JavaScriptCore/ChangeLog

Timestamp:

Sep 23, 2017, 8:05:53 AM (8 years ago)

Author:

[email protected]

Message:

[ESNext] Async iteration - Implement Async Generator - optimization
​https://bugs.webkit.org/show_bug.cgi?id=175891

Reviewed by Yusuke Suzuki.

Add small optimization for async generators:

1. merging async generator queue to async generator itself

generator.@first / generator.@last is enough, by doing so,

we remove one unnecessary object alloc.

2. merging request with queue.

• builtins/AsyncGeneratorPrototype.js:

(globalPrivate.asyncGeneratorQueueIsEmpty):
(globalPrivate.asyncGeneratorQueueCreateItem):
(globalPrivate.asyncGeneratorQueueEnqueue):
(globalPrivate.asyncGeneratorQueueDequeue):
(globalPrivate.asyncGeneratorDequeue):
(globalPrivate.isSuspendYieldState):
(globalPrivate.asyncGeneratorEnqueue):

• builtins/BuiltinNames.h:
• bytecompiler/BytecodeGenerator.cpp:

(JSC::BytecodeGenerator::emitPutAsyncGeneratorFields):

• bytecompiler/BytecodeGenerator.h:
• bytecompiler/NodesCodegen.cpp:

(JSC::FunctionNode::emitBytecode):

File:

• trunk/Source/JavaScriptCore/ChangeLog (modified) (1 diff)

trunk/Source/JavaScriptCore/ChangeLog

@@ +1 @@
+2017-09-23  Oleksandr Skachkov  <[email protected]>
+
+        [ESNext] Async iteration - Implement Async Generator - optimization
+        https://bugs.webkit.org/show_bug.cgi?id=175891
+
+        Reviewed by Yusuke Suzuki.
+
+        Add small optimization for async generators:
+        1. merging async generator queue to async generator itself
+        generator.@first / generator.@last is enough, by doing so,
+          we remove one unnecessary object alloc.
+        2. merging request with queue.
+
+        * builtins/AsyncGeneratorPrototype.js:
+        (globalPrivate.asyncGeneratorQueueIsEmpty):
+        (globalPrivate.asyncGeneratorQueueCreateItem):
+        (globalPrivate.asyncGeneratorQueueEnqueue):
+        (globalPrivate.asyncGeneratorQueueDequeue):
+        (globalPrivate.asyncGeneratorDequeue):
+        (globalPrivate.isSuspendYieldState):
+        (globalPrivate.asyncGeneratorEnqueue):
+        * builtins/BuiltinNames.h:
+        * bytecompiler/BytecodeGenerator.cpp:
+        (JSC::BytecodeGenerator::emitPutAsyncGeneratorFields):
+        * bytecompiler/BytecodeGenerator.h:
+        * bytecompiler/NodesCodegen.cpp:
+        (JSC::FunctionNode::emitBytecode):
+
 2017-09-23  Joseph Pecoraro  <[email protected]>