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LibJS/JIT: Compile the NewArray bytecode instruction

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This commit is contained in:
Andreas Kling 2023-10-21 15:41:09 +02:00
parent 6a16783c66
commit a913ac5799
2 changed files with 28 additions and 0 deletions
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27
Userland/Libraries/LibJS/JIT/Compiler.cpp
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@ -9,6 +9,7 @@
#include <LibJS/Bytecode/Instruction.h>
#include <LibJS/Bytecode/Interpreter.h>
#include <LibJS/JIT/Compiler.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/VM.h>
#include <LibJS/Runtime/ValueInlines.h>
#include <sys/mman.h>
@ -422,6 +423,29 @@ void Compiler::compile_new_object(Bytecode::Op::NewObject const&)
store_vm_register(Bytecode::Register::accumulator(), RET);
}
static Value cxx_new_array(VM& vm, size_t element_count, u32 first_register_index)
{
auto& realm = *vm.current_realm();
auto array = MUST(Array::create(realm, 0));
for (size_t i = 0; i < element_count; ++i) {
auto& value = vm.bytecode_interpreter().reg(Bytecode::Register(first_register_index + i));
array->indexed_properties().put(i, value, default_attributes);
}
return array;
}
void Compiler::compile_new_array(Bytecode::Op::NewArray const& op)
{
m_assembler.mov(
Assembler::Operand::Register(ARG1),
Assembler::Operand::Imm64(op.element_count()));
m_assembler.mov(
Assembler::Operand::Register(ARG2),
Assembler::Operand::Imm64(op.element_count() ? op.start().index() : 0));
m_assembler.native_call((void*)cxx_new_array);
store_vm_register(Bytecode::Register::accumulator(), RET);
}
static Value cxx_get_by_id(VM& vm, Value base, Bytecode::IdentifierTableIndex property, u32 cache_index)
{
return TRY_OR_SET_EXCEPTION(Bytecode::get_by_id(vm.bytecode_interpreter(), property, base, base, cache_index));
@ -662,6 +686,9 @@ OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable& bytecode_execut
case Bytecode::Instruction::Type::NewObject:
compiler.compile_new_object(static_cast<Bytecode::Op::NewObject const&>(op));
break;
case Bytecode::Instruction::Type::NewArray:
compiler.compile_new_array(static_cast<Bytecode::Op::NewArray const&>(op));
break;
case Bytecode::Instruction::Type::GetById:
compiler.compile_get_by_id(static_cast<Bytecode::Op::GetById const&>(op));
break;