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LibJS/Bytecode: Don't generate ResolveThisBinding if not needed

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Functions that don't have a FunctionEnvironment will get their `this`
value from the ExecutionContext. This patch stops generating
ResolveThisBinding instructions at all for functions like that, and
instead pre-populates the `this` register when entering a new bytecode
executable.
This commit is contained in:
Andreas Kling 2024-05-31 21:00:15 +02:00
parent 9d22db2802
commit e6b1e54c44
Notes: sideshowbarker 2024-07-17 06:33:00 +09:00
2 changed files with 8 additions and 0 deletions
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1
Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
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@ -718,6 +718,7 @@ Interpreter::ResultAndReturnRegister Interpreter::run_executable(Executable& exe
reg(Register::accumulator()) = initial_accumulator_value;
reg(Register::return_value()) = {};
reg(Register::this_value()) = running_execution_context.this_value;
running_execution_context.executable = &executable;