RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 06:57:44 +00:00
Code Issues Activity Actions

LibJS+LibJIT: Add fast path for Int32 ^ Int32

Browse source
This commit is contained in:
Andreas Kling 2023-11-03 08:54:50 +01:00
parent 3a5c177025
commit 0aeb83b03f
3 changed files with 56 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

35
Userland/Libraries/LibJS/JIT/Compiler.cpp
View file

@ -684,6 +684,41 @@ void Compiler::compile_bitwise_or(Bytecode::Op::BitwiseOr const& op)
end.link(m_assembler);
}
static Value cxx_bitwise_xor(VM& vm, Value lhs, Value rhs)
{
return TRY_OR_SET_EXCEPTION(bitwise_xor(vm, lhs, rhs));
}
void Compiler::compile_bitwise_xor(Bytecode::Op::BitwiseXor const& op)
{
load_vm_register(ARG1, op.lhs());
load_accumulator(ARG2);
Assembler::Label end {};
branch_if_both_int32(ARG1, ARG2, [&] {
// ARG1 ^= ARG2 (32-bit)
m_assembler.bitwise_xor32(
Assembler::Operand::Register(ARG1),
Assembler::Operand::Register(ARG2));
// accumulator = ARG1 | SHIFTED_INT32_TAG;
m_assembler.mov(
Assembler::Operand::Register(GPR0),
Assembler::Operand::Imm(SHIFTED_INT32_TAG));
m_assembler.bitwise_or(
Assembler::Operand::Register(ARG1),
Assembler::Operand::Register(GPR0));
store_accumulator(ARG1);
m_assembler.jump(end);
});
native_call((void*)cxx_bitwise_xor);
store_accumulator(RET);
check_exception();
end.link(m_assembler);
}
static ThrowCompletionOr<Value> not_(VM&, Value value)
{
return Value(!value.to_boolean());