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LibJS: Introduce Builtins

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Builtins are functions that can be detected during bytecode generation
and enable fast-paths in the JIT.
This commit is contained in:
Simon Wanner 2023-11-17 11:48:30 +01:00 • committed by Andreas Kling
parent b9141d85d8
commit 86b85aa68b
13 changed files with 191 additions and 4 deletions
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7
Userland/Libraries/LibJS/Bytecode/Op.h
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@ -10,6 +10,7 @@
#include <AK/StdLibExtras.h>
#include <LibCrypto/BigInt/SignedBigInteger.h>
#include <LibJS/Bytecode/Builtins.h>
#include <LibJS/Bytecode/IdentifierTable.h>
#include <LibJS/Bytecode/Instruction.h>
#include <LibJS/Bytecode/Label.h>
@ -984,7 +985,7 @@ enum class CallType {
class Call final : public Instruction {
public:
Call(CallType type, Register callee, Register this_value, Register first_argument, u32 argument_count, Optional<StringTableIndex> expression_string = {})
Call(CallType type, Register callee, Register this_value, Register first_argument, u32 argument_count, Optional<StringTableIndex> expression_string = {}, Optional<Builtin> builtin = {})
: Instruction(Type::Call, sizeof(*this))
, m_callee(callee)
, m_this_value(this_value)
@ -992,6 +993,7 @@ public:
, m_argument_count(argument_count)
, m_type(type)
, m_expression_string(expression_string)
, m_builtin(builtin)
{
}
@ -1003,6 +1005,8 @@ public:
Register first_argument() const { return m_first_argument; }
u32 argument_count() const { return m_argument_count; }
Optional<Builtin> const& builtin() const { return m_builtin; }
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
DeprecatedString to_deprecated_string_impl(Bytecode::Executable const&) const;
@ -1013,6 +1017,7 @@ private:
u32 m_argument_count { 0 };
CallType m_type;
Optional<StringTableIndex> m_expression_string;
Optional<Builtin> m_builtin;
};
class CallWithArgumentArray final : public Instruction {