LibJS: Make async functions & generators faster with helper types

Instead of returning internal generator results as ordinary JS::Objects with properties, we now use GeneratorResult and CompletionCell which both inherit from Cell directly and allow efficient access to state. 1.59x speedup on JetStream3/lazy-collections.js :^)
Author: https://github.com/awesomekling Commit: a0bb31f7a0 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4161
2025-07-29 12:19:54 +00:00 · 2025-03-31 09:32:39 +01:00 · 2025-03-31 09:32:39 +01:00 · a0bb31f7a0 · 2025-04-01 00:31:35 +00:00
commit a0bb31f7a0
parent 1022566bff
12 changed files with 259 additions and 93 deletions
--- a/Libraries/LibJS/Bytecode/Instruction.h
+++ b/Libraries/LibJS/Bytecode/Instruction.h
@ -57,6 +57,7 @@
    O(GetByValue)                      \
    O(GetByValueWithThis)              \
    O(GetCalleeAndThisFromEnvironment) \
+    O(GetCompletionFields)             \
    O(GetGlobal)                       \
    O(GetImportMeta)                   \
    O(GetIterator)                     \
@ -131,6 +132,7 @@
    O(RightShift)                      \
    O(ScheduleJump)                    \
    O(SetArgument)                     \
+    O(SetCompletionType)               \
    O(SetLexicalBinding)               \
    O(SetVariableBinding)              \
    O(StrictlyEquals)                  \