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LibJS+LibJIT: Replace make_label() with default constructed label

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This commit is contained in:
Simon Wanner 2023-10-28 20:17:16 +02:00 • committed by Andreas Kling
parent ff265d1900
commit 202a08ecc2
2 changed files with 13 additions and 18 deletions
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7
Userland/Libraries/LibJIT/Assembler.h
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@ -254,17 +254,12 @@ struct Assembler {
}
};
[[nodiscard]] Label make_label()
{
return Label {};
}
[[nodiscard]] Label jump()
{
// jmp target (RIP-relative 32-bit offset)
emit8(0xe9);
emit32(0xdeadbeef);
auto label = make_label();
Assembler::Label label {};
label.add_jump(*this, m_output.size());
return label;
}

24
Userland/Libraries/LibJS/JIT/Compiler.cpp
View file

@ -137,7 +137,7 @@ void Compiler::compile_to_boolean(Assembler::Reg dst, Assembler::Reg src)
Assembler::Operand::Imm(48));
// if (dst != BOOLEAN_TAG) goto slow_case;
auto slow_case = m_assembler.make_label();
Assembler::Label slow_case {};
m_assembler.jump_if_not_equal(
Assembler::Operand::Register(dst),
Assembler::Operand::Imm(BOOLEAN_TAG),
@ -220,7 +220,7 @@ void Compiler::branch_if_int32(Assembler::Reg reg, Codegen codegen)
m_assembler.mov(Assembler::Operand::Register(GPR0), Assembler::Operand::Register(reg));
m_assembler.shift_right(Assembler::Operand::Register(GPR0), Assembler::Operand::Imm(48));
auto not_int32_case = m_assembler.make_label();
Assembler::Label not_int32_case {};
m_assembler.jump_if_not_equal(
Assembler::Operand::Register(GPR0),
Assembler::Operand::Imm(INT32_TAG),
@ -242,7 +242,7 @@ void Compiler::branch_if_both_int32(Assembler::Reg lhs, Assembler::Reg rhs, Code
m_assembler.mov(Assembler::Operand::Register(GPR1), Assembler::Operand::Register(rhs));
m_assembler.shift_right(Assembler::Operand::Register(GPR1), Assembler::Operand::Imm(48));
auto not_int32_case = m_assembler.make_label();
Assembler::Label not_int32_case {};
m_assembler.jump_if_not_equal(
Assembler::Operand::Register(GPR0),
Assembler::Operand::Imm(INT32_TAG),
@ -261,8 +261,8 @@ void Compiler::compile_increment(Bytecode::Op::Increment const&)
{
load_vm_register(ARG1, Bytecode::Register::accumulator());
auto end = m_assembler.make_label();
auto slow_case = m_assembler.make_label();
Assembler::Label end {};
Assembler::Label slow_case {};
branch_if_int32(ARG1, [&] {
// GPR0 = ARG1 & 0xffffffff;
@ -328,7 +328,7 @@ void Compiler::check_exception()
// We have an exception!
// if (!unwind_context.valid) return;
auto handle_exception = m_assembler.make_label();
Assembler::Label handle_exception {};
m_assembler.mov(
Assembler::Operand::Register(GPR0),
Assembler::Operand::Mem64BaseAndOffset(UNWIND_CONTEXT_BASE, 0));
@ -347,7 +347,7 @@ void Compiler::check_exception()
// exception = Value();
// goto handler;
// }
auto no_handler = m_assembler.make_label();
Assembler::Label no_handler {};
m_assembler.mov(
Assembler::Operand::Register(GPR0),
Assembler::Operand::Mem64BaseAndOffset(UNWIND_CONTEXT_BASE, 8));
@ -367,7 +367,7 @@ void Compiler::check_exception()
no_handler.link(m_assembler);
// if (unwind_context.finalizer) goto finalizer;
auto no_finalizer = m_assembler.make_label();
Assembler::Label no_finalizer {};
m_assembler.mov(
Assembler::Operand::Register(GPR0),
Assembler::Operand::Mem64BaseAndOffset(UNWIND_CONTEXT_BASE, 16));
@ -505,13 +505,13 @@ void Compiler::compile_less_than(Bytecode::Op::LessThan const& op)
load_vm_register(ARG1, op.lhs());
load_vm_register(ARG2, Bytecode::Register::accumulator());
auto end = m_assembler.make_label();
Assembler::Label end {};
branch_if_both_int32(ARG1, ARG2, [&] {
// if (ARG1 < ARG2) return true;
// else return false;
auto true_case = m_assembler.make_label();
Assembler::Label true_case {};
m_assembler.sign_extend_32_to_64_bits(ARG1);
m_assembler.sign_extend_32_to_64_bits(ARG2);
@ -575,7 +575,7 @@ void Compiler::compile_return(Bytecode::Op::Return const&)
// check for finalizer
// if (!unwind_context.valid) goto normal_return;
auto normal_return = m_assembler.make_label();
Assembler::Label normal_return {};
m_assembler.mov(
Assembler::Operand::Register(GPR1),
Assembler::Operand::Mem64BaseAndOffset(UNWIND_CONTEXT_BASE, 0));
@ -831,7 +831,7 @@ void Compiler::compile_resolve_this_binding(Bytecode::Op::ResolveThisBinding con
Assembler::Operand::Register(GPR1),
Assembler::Operand::Imm(Value().encoded()));
auto slow_case = m_assembler.make_label();
Assembler::Label slow_case {};
m_assembler.jump_if_equal(
Assembler::Operand::Register(GPR0),
Assembler::Operand::Register(GPR1),