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refactor: 寄存器号 u8→u32 全链放宽，vreg 化去 checkpoint/reg_overflow

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彭俊皓
2026-08-06 16:31:16 +08:00
parent 5988696f5b
commit 224d1347eb
54 changed files with 404 additions and 431 deletions
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crates/oxide_emit/src/expr/operator/mod.rs
+43 -47
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@@ -12,16 +12,15 @@ use oxide_parser::{ChainElement, Expression, LogicalOperator, SimpleAssignmentTa
impl Emitter {
fn emit_private_in_expression(
&self, pin: &oxide_parser::PrivateInExpression, ctx: &mut CompileCtx,
) -> Result<u8, String> {
) -> Result<u32, String> {
let obj_reg = self.emit_expression(&pin.right, ctx)?;
let key_reg = self.emit_private_id_reg(pin.left.name.as_str(), ctx)?;
let result_reg = ctx.alloc_reg();
ctx.inst(Inst::new(OpCode::PRIVATE_BRAND_IN, Operand::Reg(result_reg as u32), Operand::Reg(obj_reg as u32), Operand::Reg(key_reg as u32)));
ctx.inst(Inst::new(OpCode::PRIVATE_BRAND_IN, Operand::Reg(result_reg), Operand::Reg(obj_reg), Operand::Reg(key_reg)));
Ok(result_reg)
}
fn emit_binary_expression(&self, bin: &oxide_parser::BinaryExpression, ctx: &mut CompileCtx) -> Result<u8, String> {
let checkpoint = ctx.reg_checkpoint();
fn emit_binary_expression(&self, bin: &oxide_parser::BinaryExpression, ctx: &mut CompileCtx) -> Result<u32, String> {
let left = self.emit_expression(&bin.left, ctx)?;
let right = self.emit_expression(&bin.right, ctx)?;
let op = match bin.operator {
@@ -48,14 +47,11 @@ impl Emitter {
BinaryOperator::StrictInequality => OpCode::STRICT_NEQ,
_ => return Err(format!("unsupported binary operator: {:?}", bin.operator)),
};
ctx.inst(Inst::new(op, Operand::Reg(left as u32), Operand::Reg(left as u32), Operand::Reg(right as u32)));
if is_side_effect_free(&bin.left) && is_side_effect_free(&bin.right) {
ctx.restore_reg_checkpoint(checkpoint.saturating_add(1).max(left.saturating_add(1)));
}
ctx.inst(Inst::new(op, Operand::Reg(left), Operand::Reg(left), Operand::Reg(right)));
Ok(left)
}
fn emit_unary_expression(&self, un: &oxide_parser::UnaryExpression, ctx: &mut CompileCtx) -> Result<u8, String> {
fn emit_unary_expression(&self, un: &oxide_parser::UnaryExpression, ctx: &mut CompileCtx) -> Result<u32, String> {
if matches!(un.operator, UnaryOperator::Delete) {
return match &un.argument {
Expression::Identifier(_) => {
@@ -65,13 +61,13 @@ impl Emitter {
let obj_reg = self.emit_expression(&member.object, ctx)?;
let prop_name = member.property.name.as_str();
let const_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
ctx.inst(Inst::delete_prop_static(Operand::Reg(obj_reg as u32), const_idx as u32));
ctx.inst(Inst::delete_prop_static(Operand::Reg(obj_reg), const_idx as u32));
Ok(obj_reg)
}
Expression::ComputedMemberExpression(member) => {
let obj_reg = self.emit_expression(&member.object, ctx)?;
let key_reg = self.emit_expression(&member.expression, ctx)?;
ctx.inst(Inst::new(OpCode::DELETE_PROP_DYNAMIC, Operand::Reg(obj_reg as u32), Operand::Reg(obj_reg as u32), Operand::Reg(key_reg as u32)));
ctx.inst(Inst::new(OpCode::DELETE_PROP_DYNAMIC, Operand::Reg(obj_reg), Operand::Reg(obj_reg), Operand::Reg(key_reg)));
Ok(obj_reg)
}
Expression::ChainExpression(chain) => {
@@ -81,23 +77,23 @@ impl Emitter {
let obj_reg = self.emit_expression(&member.object, ctx)?;
if member.optional {
let dup_reg = ctx.alloc_reg();
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg as u32), Operand::Reg(obj_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(obj_reg), Operand::None));
ctx.inst(Inst::jmp_if_nullish(dup_reg, short_label));
}
let prop_name = member.property.name.as_str();
let const_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
ctx.inst(Inst::delete_prop_static(Operand::Reg(obj_reg as u32), const_idx as u32));
ctx.inst(Inst::delete_prop_static(Operand::Reg(obj_reg), const_idx as u32));
obj_reg
}
ChainElement::ComputedMemberExpression(member) => {
let obj_reg = self.emit_expression(&member.object, ctx)?;
if member.optional {
let dup_reg = ctx.alloc_reg();
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg as u32), Operand::Reg(obj_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(obj_reg), Operand::None));
ctx.inst(Inst::jmp_if_nullish(dup_reg, short_label));
}
let key_reg = self.emit_expression(&member.expression, ctx)?;
ctx.inst(Inst::new(OpCode::DELETE_PROP_DYNAMIC, Operand::Reg(obj_reg as u32), Operand::Reg(obj_reg as u32), Operand::Reg(key_reg as u32)));
ctx.inst(Inst::new(OpCode::DELETE_PROP_DYNAMIC, Operand::Reg(obj_reg), Operand::Reg(obj_reg), Operand::Reg(key_reg)));
obj_reg
}
_ => return Err("invalid delete target".into()),
@@ -106,7 +102,7 @@ impl Emitter {
ctx.inst(Inst::jmp(end_label));
ctx.labels.set_label_pos(short_label, ctx.insts.len());
let true_idx = ctx.add_constant(Constant::Boolean(true));
ctx.inst(Inst::load_const(Operand::Reg(result_reg as u32), true_idx));
ctx.inst(Inst::load_const(Operand::Reg(result_reg), true_idx));
ctx.labels.set_label_pos(end_label, ctx.insts.len());
Ok(result_reg)
}
@@ -116,27 +112,27 @@ impl Emitter {
let arg = self.emit_expression(&un.argument, ctx)?;
match un.operator {
UnaryOperator::UnaryNegation => {
ctx.inst(Inst::new(OpCode::NEG, Operand::Reg(arg as u32), Operand::Reg(arg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::NEG, Operand::Reg(arg), Operand::Reg(arg), Operand::None));
Ok(arg)
}
UnaryOperator::Typeof => {
ctx.inst(Inst::new(OpCode::TYPEOF, Operand::Reg(arg as u32), Operand::Reg(arg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::TYPEOF, Operand::Reg(arg), Operand::Reg(arg), Operand::None));
Ok(arg)
}
UnaryOperator::Void => {
ctx.inst(Inst::new(OpCode::VOID, Operand::Reg(arg as u32), Operand::Reg(arg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::VOID, Operand::Reg(arg), Operand::Reg(arg), Operand::None));
Ok(arg)
}
UnaryOperator::LogicalNot => {
ctx.inst(Inst::new(OpCode::NOT, Operand::Reg(arg as u32), Operand::Reg(arg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::NOT, Operand::Reg(arg), Operand::Reg(arg), Operand::None));
Ok(arg)
}
UnaryOperator::BitwiseNot => {
ctx.inst(Inst::new(OpCode::BIT_NOT, Operand::Reg(arg as u32), Operand::Reg(arg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::BIT_NOT, Operand::Reg(arg), Operand::Reg(arg), Operand::None));
Ok(arg)
}
UnaryOperator::UnaryPlus => {
ctx.inst(Inst::new(OpCode::UNARY_PLUS, Operand::Reg(arg as u32), Operand::Reg(arg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::UNARY_PLUS, Operand::Reg(arg), Operand::Reg(arg), Operand::None));
Ok(arg)
}
UnaryOperator::Delete => Err("invalid delete target".into()),
@@ -145,7 +141,7 @@ impl Emitter {
fn emit_conditional_expression(
&self, cond: &oxide_parser::ConditionalExpression, ctx: &mut CompileCtx,
) -> Result<u8, String> {
) -> Result<u32, String> {
let else_label = ctx.next_label_id();
let end_label = ctx.next_label_id();
@@ -154,13 +150,13 @@ impl Emitter {
let cons_reg = self.emit_expression(&cond.consequent, ctx)?;
let result_reg = ctx.alloc_reg();
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg as u32), Operand::Reg(cons_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg), Operand::Reg(cons_reg), Operand::None));
ctx.inst(Inst::jmp(end_label));
ctx.labels.set_label_pos(else_label, ctx.insts.len());
let alt_reg = self.emit_expression(&cond.alternate, ctx)?;
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg as u32), Operand::Reg(alt_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg), Operand::Reg(alt_reg), Operand::None));
ctx.labels.set_label_pos(end_label, ctx.insts.len());
Ok(result_reg)
@@ -168,7 +164,7 @@ impl Emitter {
fn emit_logical_expression(
&self, log: &oxide_parser::LogicalExpression, ctx: &mut CompileCtx,
) -> Result<u8, String> {
) -> Result<u32, String> {
let left_reg = self.emit_expression(&log.left, ctx)?;
if is_side_effect_free(&log.left) && is_side_effect_free(&log.right) {
@@ -179,7 +175,7 @@ impl Emitter {
LogicalOperator::Or => OpCode::OR,
LogicalOperator::Coalesce => OpCode::NULLISH,
};
ctx.inst(Inst::new(op, Operand::Reg(r as u32), Operand::Reg(left_reg as u32), Operand::Reg(right_reg as u32)));
ctx.inst(Inst::new(op, Operand::Reg(r), Operand::Reg(left_reg), Operand::Reg(right_reg)));
return Ok(r);
}
@@ -187,12 +183,12 @@ impl Emitter {
let rhs_label = ctx.next_label_id();
let end_label = ctx.next_label_id();
let dup_reg = ctx.alloc_reg();
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg as u32), Operand::Reg(left_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(left_reg), Operand::None));
ctx.inst(Inst::jmp_if_nullish(dup_reg, rhs_label));
ctx.inst(Inst::jmp(end_label));
ctx.labels.set_label_pos(rhs_label, ctx.insts.len());
let right_reg = self.emit_expression(&log.right, ctx)?;
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg as u32), Operand::Reg(right_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(right_reg), Operand::None));
ctx.labels.set_label_pos(end_label, ctx.insts.len());
return Ok(dup_reg);
}
@@ -203,7 +199,7 @@ impl Emitter {
LogicalOperator::Coalesce => return Err("invalid logical operator dispatch".into()),
};
let dup_reg = ctx.alloc_reg();
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg as u32), Operand::Reg(left_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(left_reg), Operand::None));
match log.operator {
LogicalOperator::And => ctx.inst(Inst::jmp_if_false(dup_reg, skip_label)),
@@ -212,7 +208,7 @@ impl Emitter {
}
let right_reg = self.emit_expression(&log.right, ctx)?;
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg as u32), Operand::Reg(right_reg as u32), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(right_reg), Operand::None));
ctx.labels.set_label_pos(skip_label, ctx.insts.len());
Ok(dup_reg)
@@ -220,7 +216,7 @@ impl Emitter {
fn emit_update_expression(
&self, update: &oxide_parser::UpdateExpression, ctx: &mut CompileCtx,
) -> Result<u8, String> {
) -> Result<u32, String> {
match &update.argument {
SimpleAssignmentTarget::AssignmentTargetIdentifier(id) => {
let name = id.name.as_str();
@@ -230,36 +226,36 @@ impl Emitter {
if let Some(uv) = uv_idx {
// Upvalue: LOAD_UPVALUE + CONST(1) + ADD/SUB + STORE_UPVALUE
let val_reg = ctx.alloc_reg();
ctx.inst(Inst::new(OpCode::LOAD_UPVALUE, Operand::Reg(val_reg as u32), Operand::Imm(uv as u16), Operand::None));
ctx.inst(Inst::new(OpCode::LOAD_UPVALUE, Operand::Reg(val_reg), Operand::Imm(uv as u16), Operand::None));
let one_idx = ctx.add_constant(Constant::Int(1));
let one_reg = ctx.alloc_reg();
ctx.inst(Inst::load_const(Operand::Reg(one_reg as u32), one_idx));
ctx.inst(Inst::load_const(Operand::Reg(one_reg), one_idx));
let op = if update.operator == UpdateOperator::Increment {
OpCode::ADD
} else {
OpCode::SUB
};
ctx.inst(Inst::new(op, Operand::Reg(val_reg as u32), Operand::Reg(val_reg as u32), Operand::Reg(one_reg as u32)));
ctx.inst(Inst::new(OpCode::STORE_UPVALUE, Operand::None, Operand::Reg(val_reg as u32), Operand::Imm(uv as u16)));
ctx.inst(Inst::new(op, Operand::Reg(val_reg), Operand::Reg(val_reg), Operand::Reg(one_reg)));
ctx.inst(Inst::new(OpCode::STORE_UPVALUE, Operand::None, Operand::Reg(val_reg), Operand::Imm(uv as u16)));
Ok(val_reg)
} else if let Some(cell_idx) = captured_cell {
// Captured cell: CELL_GET + CONST(1) + ADD/SUB + CELL_SET
let val_reg = ctx.alloc_reg();
if let Some((binding, _)) = ctx.scopes.symbols.lookup_any_binding(name) {
ctx.inst(Inst::new(OpCode::CELL_GET, Operand::Reg(val_reg as u32), Operand::Reg(binding.reg as u32), Operand::Imm(cell_idx as u16)));
ctx.inst(Inst::new(OpCode::CELL_GET, Operand::Reg(val_reg), Operand::Reg(binding.reg), Operand::Imm(cell_idx as u16)));
} else {
ctx.inst(Inst::new(OpCode::CELL_GET, Operand::Reg(val_reg as u32), Operand::None, Operand::Imm(cell_idx as u16)));
ctx.inst(Inst::new(OpCode::CELL_GET, Operand::Reg(val_reg), Operand::None, Operand::Imm(cell_idx as u16)));
}
let one_idx = ctx.add_constant(Constant::Int(1));
let one_reg = ctx.alloc_reg();
ctx.inst(Inst::load_const(Operand::Reg(one_reg as u32), one_idx));
ctx.inst(Inst::load_const(Operand::Reg(one_reg), one_idx));
let op = if update.operator == UpdateOperator::Increment {
OpCode::ADD
} else {
OpCode::SUB
};
ctx.inst(Inst::new(op, Operand::Reg(val_reg as u32), Operand::Reg(val_reg as u32), Operand::Reg(one_reg as u32)));
ctx.inst(Inst::new(OpCode::CELL_SET, Operand::None, Operand::Reg(val_reg as u32), Operand::Imm(cell_idx as u16)));
ctx.inst(Inst::new(op, Operand::Reg(val_reg), Operand::Reg(val_reg), Operand::Reg(one_reg)));
ctx.inst(Inst::new(OpCode::CELL_SET, Operand::None, Operand::Reg(val_reg), Operand::Imm(cell_idx as u16)));
Ok(val_reg)
} else {
let var_reg = ctx.lookup_or_global(name);
@@ -270,7 +266,7 @@ impl Emitter {
(UpdateOperator::Decrement, true) => OpCode::DEC_PRE,
(UpdateOperator::Decrement, false) => OpCode::DEC_POST,
};
ctx.inst(Inst::new(op, Operand::Reg(var_reg as u32), Operand::Reg(result_reg as u32), Operand::Reg(result_reg as u32)));
ctx.inst(Inst::new(op, Operand::Reg(var_reg), Operand::Reg(result_reg), Operand::Reg(result_reg)));
Ok(result_reg)
}
}
@@ -279,7 +275,7 @@ impl Emitter {
let prop_name = member.property.name.as_str();
let key_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
let key_reg = ctx.alloc_reg();
ctx.inst(Inst::load_const(Operand::Reg(key_reg as u32), key_idx));
ctx.inst(Inst::load_const(Operand::Reg(key_reg), key_idx));
let val_reg = ctx.alloc_reg();
let op = match update.operator {
UpdateOperator::Increment => OpCode::MEMBER_INC,
@@ -287,10 +283,10 @@ impl Emitter {
};
match op {
OpCode::MEMBER_INC => {
ctx.inst(Inst::member_inc(Operand::Reg(obj_reg as u32), Operand::Reg(val_reg as u32), Operand::Reg(key_reg as u32)));
ctx.inst(Inst::member_inc(Operand::Reg(obj_reg), Operand::Reg(val_reg), Operand::Reg(key_reg)));
}
OpCode::MEMBER_DEC => {
ctx.inst(Inst::member_dec(Operand::Reg(obj_reg as u32), Operand::Reg(val_reg as u32), Operand::Reg(key_reg as u32)));
ctx.inst(Inst::member_dec(Operand::Reg(obj_reg), Operand::Reg(val_reg), Operand::Reg(key_reg)));
}
_ => unreachable!(),
}
@@ -304,14 +300,14 @@ impl Emitter {
UpdateOperator::Increment => OpCode::DYN_MEMBER_INC,
UpdateOperator::Decrement => OpCode::DYN_MEMBER_DEC,
};
ctx.inst(Inst::new(op, Operand::Reg(obj_reg as u32), Operand::Reg(key_reg as u32), Operand::Reg(val_reg as u32)));
ctx.inst(Inst::new(op, Operand::Reg(obj_reg), Operand::Reg(key_reg), Operand::Reg(val_reg)));
Ok(val_reg)
}
_ => Err("member update not yet supported".into()),
}
}
pub(crate) fn emit_operator(&self, expr: &Expression, ctx: &mut CompileCtx) -> Result<u8, String> {
pub(crate) fn emit_operator(&self, expr: &Expression, ctx: &mut CompileCtx) -> Result<u32, String> {
match expr {
Expression::BinaryExpression(bin) => self.emit_binary_expression(bin, ctx),
Expression::PrivateInExpression(pin) => self.emit_private_in_expression(pin, ctx),