RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 08:48:11 +00:00
Code Issues Activity Actions

LibJS: Add caching of this value in ResolveThisBinding instruction

Browse source 
Because "this" value cannot be changed during function execution it is
safe to compute it once and then use for future access.

This optimization makes ai-astar.js run 8% faster.
This commit is contained in:
Aliaksandr Kalenik 2023-07-28 23:59:43 +02:00 • committed by Andreas Kling
parent bbd80d2e4d
commit 2bdc69c42c
3 changed files with 12 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
View file

@ -208,6 +208,8 @@ Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Realm& realm, Execu
else
push_call_frame(make<CallFrame>(), executable.number_of_registers);
TemporaryChange restore_this_value { m_this_value, {} };
for (;;) {
Bytecode::InstructionStreamIterator pc(m_current_block->instruction_stream());
TemporaryChange temp_change { m_pc, &pc };