mirror of
https://github.com/pjh456/OxideJS.git
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530 lines
24 KiB
Rust
530 lines
24 KiB
Rust
//! IR 指令结构 + 构造 API。
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//!
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//! `ext` 内部是裸 u32（lowering 直拼字节码扩展字）。扩展字的**数量与语义值编码**
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//! 全部由 `inst_*` 构造 API 保证——emit 代码不直接触碰 `ext` 字段。
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//! 寄存器 def/use 契约与副作用判定在 `contract` 模块（`impl Inst`，DCE/liveness 共用）。
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use oxide_bytecode::opcode::OpCode;
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use smallvec::SmallVec;
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use crate::operand::{LabelId, Operand};
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/// IR 指令：opcode + 三个操作数槽（rd/a/b）+ 扩展字 `ext`。
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/// `ext` 内部是裸 u32，其数量与语义值编码由下方 `inst_*` 构造 API 保证。
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub struct Inst {
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pub op: OpCode,
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pub rd: Operand,
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pub a: Operand,
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pub b: Operand,
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pub ext: SmallVec<[u32; 4]>,
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}
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impl Inst {
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/// 基础构造：ext 为空。
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pub fn new(op: OpCode, rd: Operand, a: Operand, b: Operand) -> Self {
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Self {
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op,
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rd,
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a,
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b,
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ext: SmallVec::new(),
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}
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}
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fn with_ext(op: OpCode, rd: Operand, a: Operand, b: Operand, ext: &[u32]) -> Self {
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Self {
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op,
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rd,
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a,
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b,
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ext: SmallVec::from_slice(ext),
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}
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}
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// ── IC 系：ext = [0, 0, 0]（shape/slot/proto 占位字，VM 运行时回填）──
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/// 内联缓存读属性：结果写入 `dst`，属性键为 `key`。
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pub fn ic_get(dst: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::IC_GET_PROP, Operand::None, dst, key, &[0, 0, 0])
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}
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/// 内联缓存写属性：`obj[key] = value`。
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pub fn ic_set(obj: Operand, value: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::IC_SET_PROP, obj, value, key, &[0, 0, 0])
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}
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/// 成员自增：`obj[key]++`，val 为当前值寄存器。
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pub fn member_inc(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::MEMBER_INC, obj, val, key, &[0, 0, 0])
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}
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/// 成员自减：`obj[key]--`，val 为当前值寄存器。
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pub fn member_dec(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::MEMBER_DEC, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值加法：`obj[key] += val`。
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pub fn compound_member_add(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_ADD, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值减法：`obj[key] -= val`。
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pub fn compound_member_sub(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_SUB, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值乘法：`obj[key] *= val`。
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pub fn compound_member_mul(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_MUL, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值除法：`obj[key] /= val`。
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pub fn compound_member_div(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_DIV, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值取模：`obj[key] %= val`。
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pub fn compound_member_mod(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_MOD, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值指数：`obj[key] **= val`。
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pub fn compound_member_exp(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_EXP, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值按位与：`obj[key] &= val`。
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pub fn compound_member_bit_and(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_BIT_AND, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值按位或：`obj[key] |= val`。
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pub fn compound_member_bit_or(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_BIT_OR, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值按位异或：`obj[key] ^= val`。
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pub fn compound_member_bit_xor(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_BIT_XOR, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值左移：`obj[key] <<= val`。
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pub fn compound_member_shl(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_SHL, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值右移：`obj[key] >>= val`。
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pub fn compound_member_shr(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_SHR, obj, val, key, &[0, 0, 0])
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}
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/// 成员复合赋值无符号右移：`obj[key] >>>= val`。
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pub fn compound_member_ushr(obj: Operand, val: Operand, key: Operand) -> Self {
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Self::with_ext(OpCode::COMPOUND_MEMBER_USHR, obj, val, key, &[0, 0, 0])
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}
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// ── Call 系：ext = [nargs] ──
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/// 普通函数调用：rd=callee，a=this，b=首参，ext=\[nargs\]。参数从 `first_arg` 起连续占 nargs 个寄存器。
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pub fn call(callee: Operand, this: Operand, first_arg: Operand, nargs: u8) -> Self {
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Self::with_ext(OpCode::CALL, callee, this, first_arg, &[nargs as u32])
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}
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/// 原生函数调用（内置），不经 JS 调用协议。
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pub fn call_native(callee: Operand, this: Operand, first_arg: Operand, nargs: u8) -> Self {
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Self::with_ext(OpCode::CALL_NATIVE, callee, this, first_arg, &[nargs as u32])
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}
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/// `new` 表达式：结果写入 `result`，构造函数为 `constructor`。
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pub fn new_expression(result: Operand, constructor: Operand, first_arg: Operand, nargs: u8) -> Self {
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Self::with_ext(OpCode::NEW_EXPRESSION, result, constructor, first_arg, &[nargs as u32])
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}
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/// 派生类构造中的 `super(...)`：结果写入 `result`。
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pub fn super_call(result: Operand, first_arg: Operand, nargs: u8) -> Self {
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Self::with_ext(OpCode::SUPER_CALL, result, first_arg, Operand::None, &[nargs as u32])
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}
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/// spread 实参调用：rd=callee，a=this，b 槽未用。
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/// ext=[nstatic|(nspread<<8), 有序实参字…]；每个实参字：静态实参为寄存器号，
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/// spread 源为 `0x8000_0000 | 寄存器号`（高位标记），按源码求值序排列。
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pub fn call_spread(callee: Operand, this: Operand, words: &[u32]) -> Self {
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let ext = spread_ext(words);
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Self::with_ext(OpCode::CALL_SPREAD, callee, this, Operand::None, &ext)
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}
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/// spread 实参 `new`：结果写入 `result`，构造函数为 `constructor`。
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pub fn new_expression_spread(result: Operand, constructor: Operand, words: &[u32]) -> Self {
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let ext = spread_ext(words);
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Self::with_ext(OpCode::NEW_EXPRESSION_SPREAD, result, constructor, Operand::None, &ext)
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}
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/// 派生类构造中的 `super(...spread)`：结果写入 `result`。
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pub fn super_call_spread(result: Operand, words: &[u32]) -> Self {
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let ext = spread_ext(words);
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Self::with_ext(OpCode::SUPER_CALL_SPREAD, result, Operand::None, Operand::None, &ext)
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}
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// ── 其他带 ext 字 ──
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/// 私有成员读取：result=结果，obj=接收者，key=私有名 id。
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/// ext = [brand_reg, brand_id]：brand_reg 为当前类 brand 对象寄存器（0 表示跳过
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/// brand 检查，instance 字段路径），brand_id 为实例 brand 槽的私有名 id。
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pub fn get_private(result: Operand, obj: Operand, key: Operand, brand_reg: u32, brand_id: u32) -> Self {
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Self::with_ext(OpCode::GET_PRIVATE, result, obj, key, &[brand_reg, brand_id])
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}
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/// 私有成员写入：obj=接收者，value=新值，key=私有名 id。ext 语义同 `get_private`。
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pub fn set_private(obj: Operand, value: Operand, key: Operand, brand_reg: u32, brand_id: u32) -> Self {
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Self::with_ext(OpCode::SET_PRIVATE, obj, value, key, &[brand_reg, brand_id])
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}
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/// 私有成员初始化：target=接收者，value=初值，key=私有名 id。
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/// ext = [is_method]：1 表示私有方法槽（不可写），0 表示字段/brand 槽。
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pub fn init_private(target: Operand, value: Operand, key: Operand, is_method: bool) -> Self {
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Self::with_ext(OpCode::INIT_PRIVATE, target, value, key, &[is_method as u32])
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}
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/// 定义访问器属性：home 为宿主对象，get/set 为访问器函数寄存器，key_idx 为属性名常量下标。
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pub fn define_accessor(home: Operand, get: Operand, set: Operand, key_idx: u32) -> Self {
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Self::with_ext(OpCode::DEFINE_ACCESSOR, home, get, set, &[key_idx])
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}
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/// define 数据属性：target 为宿主对象，value/key 为寄存器。
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/// 不触发原型链 setter，与 SET_PROP 语义不同。
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pub fn define_prop(target: Operand, value: Operand, key: Operand) -> Self {
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Self::new(OpCode::DEFINE_PROP, target, value, key)
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}
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/// 静态删除属性：obj 同时放 rd/a 槽，const_idx 为属性名常量下标。
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pub fn delete_prop_static(obj: Operand, const_idx: u32) -> Self {
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Self::with_ext(OpCode::DELETE_PROP_STATIC, obj, obj, Operand::None, &[const_idx])
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}
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/// 对象 rest 展开：`{...src, 排除 excluded_idx 常量列出的键}` 存入 `rest`。
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/// `excl_arr` 为可选运行时 excluded 键数组寄存器（computed key 求值结果），
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/// None 时仅用编译期 excluded_idx 常量。
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pub fn rest_object(rest: Operand, src: Operand, excluded_idx: u32, excl_arr: Option<Operand>) -> Self {
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Self::with_ext(OpCode::REST_OBJECT, rest, src, excl_arr.unwrap_or(Operand::None), &[excluded_idx])
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}
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/// 对象字面量 spread 展开：把源 `src` 的可枚举自有属性写入目标对象 `rd`（原地改）。
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/// 语义 = CopyDataProperties 的"非 null/undefined 源"：null/undefined 合法（空展开），
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/// 与 REST_OBJECT（对 null/undefined 抛 TypeError）不同。
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pub fn spread_object(target: Operand, src: Operand) -> Self {
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Self::new(OpCode::SPREAD_OBJECT, target, src, Operand::None)
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}
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/// TEMPLATE_STR：变长 ext。首字打包 `(segment_count<<16) | total_len_hint`，
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/// 后续每 quasi 一项 `quasi_const_idx & 0x7FFF_FFFF`，其后若跟表达式再一项 `0x8000_0000 | expr_reg`。
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pub fn template_str(dst: Operand, segment_count: u32, total_len_hint: u16, parts: &[u32]) -> Self {
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let mut ext = SmallVec::with_capacity(2 + parts.len());
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ext.push(((segment_count & 0xFFFF) << 16) | (total_len_hint as u32 & 0xFFFF));
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ext.extend_from_slice(parts);
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Self {
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op: OpCode::TEMPLATE_STR,
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rd: dst,
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a: Operand::None,
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b: Operand::None,
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ext,
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}
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}
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// ── RegAlloc 辅助指令 ──
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/// 寄存器复制 rd = a（RegAlloc 区间拆分时搬值）。
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/// 不可用 LOAD_VAR/STORE_VAR 组合模拟——引入变量绑定语义会误触 const guard。
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pub fn inst_mov(dst: Operand, src: Operand) -> Self {
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Self::with_ext(OpCode::MOV, dst, src, Operand::None, &[])
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}
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/// 溢出：regs[rd] → spill_stack[frame_base + slot]，ext=[slot u16]。
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pub fn inst_spill(src: Operand, slot: u16) -> Self {
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Self::with_ext(OpCode::SPILL, src, Operand::None, Operand::None, &[slot as u32])
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}
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/// 恢复：spill_stack[frame_base + slot] → regs[rd]，ext=[slot u16]。
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pub fn inst_unspill(dst: Operand, slot: u16) -> Self {
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Self::with_ext(OpCode::UNSPILL, dst, Operand::None, Operand::None, &[slot as u32])
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}
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// ── 无 ext：立即数/索引指令（拆字是 lowering 职责）──
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/// 加载常量池常量：`dst = constants[idx]`。a 槽 Const 下标由 lowering 拆字。
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pub fn load_const(dst: Operand, idx: u16) -> Self {
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Self::new(OpCode::LOAD_CONST, dst, Operand::Const(idx), Operand::None)
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}
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/// 创建闭包：`dst = nested[sub_idx]` 实例化。a 槽 Imm 子函数下标由 lowering 拆字。
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pub fn create_closure(dst: Operand, sub_idx: u16) -> Self {
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Self::new(OpCode::CREATE_CLOSURE, dst, Operand::Imm(sub_idx), Operand::None)
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}
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/// 创建 arguments 对象：`dst = 当前帧的实参列表`。运行时从当前帧
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/// （CallFrame 或 inline 同步调用）的实参区构建，无寄存器 use。
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pub fn create_arguments(dst: Operand) -> Self {
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Self::new(OpCode::CREATE_ARGUMENTS, dst, Operand::None, Operand::None)
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}
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/// 创建 rest 参数数组：`dst = 当前帧实参区中下标 ≥ fixed_count 的实参组成的数组`。
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/// `fixed_count` 为 rest 之前的固定形参数，编码进 b 槽（Imm 单字节），运行时
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/// 与 CREATE_ARGUMENTS 同源读实参区，无寄存器 use。
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pub fn create_rest_array(dst: Operand, fixed_count: u32) -> Self {
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Self::new(OpCode::CREATE_REST_ARRAY, dst, Operand::None, Operand::Imm(fixed_count as u16))
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}
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/// 生成器让出：`rd` 为被让出的值；恢复时 `next(v)` 的 `v` 经 reg 0 交付
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/// （与 CALL 同协议，emit 用 `LOAD_VAR(None)` 读取）。
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pub fn yield_value(src: Operand) -> Self {
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Self::new(OpCode::YIELD, src, Operand::None, Operand::None)
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}
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/// `yield*` 委托：`rd` 为内层可迭代对象。运行时取迭代器并转发 next/return/throw，
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/// 委托完成值（内层 done 的 value）经 reg 0 交付，与 `yield_value` 同协议。
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pub fn yield_star(src: Operand) -> Self {
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Self::new(OpCode::YIELD_STAR, src, Operand::None, Operand::None)
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}
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/// 生成器 body 起点标记：调用时参数初始化完成后挂起于此，首次 `next()` 继续。
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pub fn suspend_body() -> Self {
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Self::new(OpCode::SUSPEND_BODY, Operand::None, Operand::None, Operand::None)
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}
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/// `await` 让出：`rd` 为被等待的值（运行时 PromiseResolve 包装）；异步帧挂起，
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/// promise settle 后恢复，值经 reg 0 交付（与 YIELD 同协议）。
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pub fn await_expr(src: Operand) -> Self {
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Self::new(OpCode::AWAIT, src, Operand::None, Operand::None)
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}
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// ── 跳转族：label 放 b 槽，offset 计算是 lowering 职责 ──
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/// 无条件跳转。label 放 b 槽，offset 由 lowering 回填。
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pub fn jmp(label: LabelId) -> Self {
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Self::new(OpCode::JMP, Operand::None, Operand::None, Operand::Label(label))
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}
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/// break 完成：label 指向循环/switch 出口，`crossed` 为逃出的 finally 域数
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/// （emit 词法计算，运行时据此逐个穿越 finally；0 表示未逃出，不产生完成语义）。
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/// 编码：rd 槽放 crossed（≤255），label 放 b 槽。
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pub fn brk(label: LabelId, crossed: u16) -> Self {
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Self::new(OpCode::BREAK, Operand::Imm(crossed), Operand::None, Operand::Label(label))
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}
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/// continue 完成：同 break，label 指向循环继续目标。
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pub fn cont(label: LabelId, crossed: u16) -> Self {
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Self::new(OpCode::CONTINUE, Operand::Imm(crossed), Operand::None, Operand::Label(label))
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}
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/// 条件寄存器为 false 时跳转。
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pub fn jmp_if_false(cond_reg: u32, label: LabelId) -> Self {
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Self::new(OpCode::JMP_IF_FALSE, Operand::Reg(cond_reg), Operand::None, Operand::Label(label))
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}
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/// 条件寄存器为 true 时跳转。
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pub fn jmp_if_true(cond_reg: u32, label: LabelId) -> Self {
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Self::new(OpCode::JMP_IF_TRUE, Operand::Reg(cond_reg), Operand::None, Operand::Label(label))
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}
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/// 条件寄存器为 null/undefined 时跳转（`??` / 可选链短路）。
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pub fn jmp_if_nullish(cond_reg: u32, label: LabelId) -> Self {
|
||
Self::new(OpCode::JMP_IF_NULLISH, Operand::Reg(cond_reg), Operand::None, Operand::Label(label))
|
||
}
|
||
|
||
/// try 块起始，label 指向对应的 catch/finally 处理入口。
|
||
pub fn try_begin(label: LabelId) -> Self {
|
||
Self::new(OpCode::TRY_BEGIN, Operand::None, Operand::None, Operand::Label(label))
|
||
}
|
||
|
||
/// try-finally 块起始，label 指向 finally 入口。
|
||
pub fn try_finally_begin(label: LabelId) -> Self {
|
||
Self::new(OpCode::TRY_FINALLY_BEGIN, Operand::None, Operand::None, Operand::Label(label))
|
||
}
|
||
}
|
||
|
||
/// spread 调用系 ext 构造：首字打包 `nstatic | (nspread << 8)`，后续按源码求值序排列
|
||
/// 每个实参字（静态实参 = 寄存器号，spread 源 = `0x8000_0000 | 寄存器号`）。
|
||
fn spread_ext(words: &[u32]) -> SmallVec<[u32; 4]> {
|
||
let nspread = words.iter().filter(|w| *w >> 31 == 1).count() as u32;
|
||
let nstatic = (words.len() as u32) - nspread;
|
||
let mut ext = SmallVec::with_capacity(1 + words.len());
|
||
ext.push(nstatic | (nspread << 8));
|
||
ext.extend_from_slice(words);
|
||
ext
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
|
||
#[test]
|
||
fn inst_new_has_empty_ext() {
|
||
let inst = Inst::new(OpCode::ADD, Operand::Reg(0), Operand::Reg(1), Operand::Reg(2));
|
||
assert!(inst.ext.is_empty());
|
||
assert_eq!(inst.op, OpCode::ADD);
|
||
}
|
||
|
||
#[test]
|
||
fn ic_instructions_carry_three_zero_ext_words() {
|
||
let insts = [
|
||
Inst::ic_get(Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::ic_set(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::member_inc(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::member_dec(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::compound_member_add(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::compound_member_sub(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::compound_member_mul(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::compound_member_div(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::compound_member_mod(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
Inst::compound_member_exp(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2)),
|
||
];
|
||
for inst in &insts {
|
||
assert_eq!(inst.ext.as_slice(), &[0, 0, 0], "IC op {} must carry 3 zero ext words", inst.op);
|
||
assert!(inst.ext.len() == 3);
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn call_instructions_carry_nargs() {
|
||
let call = Inst::call(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2), 3);
|
||
assert_eq!(call.ext.as_slice(), &[3]);
|
||
assert_eq!(call.rd, Operand::Reg(0));
|
||
assert_eq!(call.a, Operand::Reg(1));
|
||
assert_eq!(call.b, Operand::Reg(2));
|
||
|
||
let native = Inst::call_native(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2), 0);
|
||
assert_eq!(native.ext.as_slice(), &[0]);
|
||
|
||
let new_expr = Inst::new_expression(Operand::Reg(3), Operand::Reg(0), Operand::Reg(1), 2);
|
||
assert_eq!(new_expr.ext.as_slice(), &[2]);
|
||
assert_eq!(new_expr.rd, Operand::Reg(3));
|
||
assert_eq!(new_expr.a, Operand::Reg(0));
|
||
|
||
let super_call = Inst::super_call(Operand::Reg(3), Operand::Reg(1), 1);
|
||
assert_eq!(super_call.ext.as_slice(), &[1]);
|
||
assert_eq!(super_call.rd, Operand::Reg(3));
|
||
assert_eq!(super_call.a, Operand::Reg(1));
|
||
}
|
||
|
||
#[test]
|
||
fn single_ext_word_instructions() {
|
||
let accessor = Inst::define_accessor(Operand::Reg(0), Operand::Reg(1), Operand::Reg(2), 42);
|
||
assert_eq!(accessor.ext.as_slice(), &[42]);
|
||
assert_eq!(accessor.rd, Operand::Reg(0));
|
||
assert_eq!(accessor.a, Operand::Reg(1));
|
||
assert_eq!(accessor.b, Operand::Reg(2));
|
||
|
||
let rest = Inst::rest_object(Operand::Reg(0), Operand::Reg(1), 7, None);
|
||
assert_eq!(rest.ext.as_slice(), &[7]);
|
||
|
||
let spread = Inst::spread_object(Operand::Reg(0), Operand::Reg(1));
|
||
assert_eq!(spread.op, OpCode::SPREAD_OBJECT);
|
||
assert_eq!(spread.rd, Operand::Reg(0));
|
||
assert_eq!(spread.a, Operand::Reg(1));
|
||
assert_eq!(spread.b, Operand::None);
|
||
assert!(spread.ext.is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn spread_call_constructors_carry_header_and_source_regs() {
|
||
let call = Inst::call_spread(Operand::Reg(0), Operand::Reg(1), &[10, 0x8000_0000 | 300]);
|
||
assert_eq!(call.op, OpCode::CALL_SPREAD);
|
||
assert_eq!(call.rd, Operand::Reg(0));
|
||
assert_eq!(call.a, Operand::Reg(1));
|
||
assert_eq!(call.b, Operand::None);
|
||
assert_eq!(call.ext.as_slice(), &[1 | (1 << 8), 10, 0x8000_0000 | 300]);
|
||
|
||
let ne = Inst::new_expression_spread(Operand::Reg(3), Operand::Reg(0), &[0x8000_0000 | 7]);
|
||
assert_eq!(ne.op, OpCode::NEW_EXPRESSION_SPREAD);
|
||
assert_eq!(ne.rd, Operand::Reg(3));
|
||
assert_eq!(ne.a, Operand::Reg(0));
|
||
assert_eq!(ne.ext.as_slice(), &[1 << 8, 0x8000_0000 | 7]);
|
||
|
||
let sc = Inst::super_call_spread(Operand::Reg(3), &[1, 0x8000_0000 | 5]);
|
||
assert_eq!(sc.op, OpCode::SUPER_CALL_SPREAD);
|
||
assert_eq!(sc.rd, Operand::Reg(3));
|
||
assert_eq!(sc.a, Operand::None);
|
||
assert_eq!(sc.b, Operand::None);
|
||
assert_eq!(sc.ext.as_slice(), &[1 | (1 << 8), 1, 0x8000_0000 | 5]);
|
||
}
|
||
|
||
#[test]
|
||
fn regalloc_constructors_carry_expected_slots() {
|
||
let mov = Inst::inst_mov(Operand::Reg(3), Operand::Reg(7));
|
||
assert_eq!(mov.op, OpCode::MOV);
|
||
assert_eq!(mov.rd, Operand::Reg(3));
|
||
assert_eq!(mov.a, Operand::Reg(7));
|
||
assert_eq!(mov.b, Operand::None);
|
||
assert!(mov.ext.is_empty());
|
||
|
||
let spill = Inst::inst_spill(Operand::Reg(5), 42);
|
||
assert_eq!(spill.op, OpCode::SPILL);
|
||
assert_eq!(spill.rd, Operand::Reg(5));
|
||
assert_eq!(spill.a, Operand::None);
|
||
assert_eq!(spill.b, Operand::None);
|
||
assert_eq!(spill.ext.as_slice(), &[42]);
|
||
|
||
let unspill = Inst::inst_unspill(Operand::Reg(9), 0xFFFF);
|
||
assert_eq!(unspill.op, OpCode::UNSPILL);
|
||
assert_eq!(unspill.rd, Operand::Reg(9));
|
||
assert_eq!(unspill.a, Operand::None);
|
||
assert_eq!(unspill.b, Operand::None);
|
||
assert_eq!(unspill.ext.as_slice(), &[0xFFFF]);
|
||
}
|
||
|
||
#[test]
|
||
fn load_const_and_create_closure_keep_semantic_operands() {
|
||
let lc = Inst::load_const(Operand::Reg(4), 300);
|
||
assert_eq!(lc.a, Operand::Const(300));
|
||
assert_eq!(lc.b, Operand::None);
|
||
assert!(lc.ext.is_empty());
|
||
|
||
let cc = Inst::create_closure(Operand::Reg(4), 5);
|
||
assert_eq!(cc.a, Operand::Imm(5));
|
||
assert_eq!(cc.b, Operand::None);
|
||
assert!(cc.ext.is_empty());
|
||
|
||
let ca = Inst::create_arguments(Operand::Reg(6));
|
||
assert_eq!(ca.op, OpCode::CREATE_ARGUMENTS);
|
||
assert_eq!(ca.rd, Operand::Reg(6));
|
||
assert_eq!(ca.a, Operand::None);
|
||
assert_eq!(ca.b, Operand::None);
|
||
assert!(ca.ext.is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn jump_family_puts_label_in_b_slot() {
|
||
let jmp = Inst::jmp(9);
|
||
assert_eq!(jmp.b, Operand::Label(9));
|
||
assert_eq!(jmp.rd, Operand::None);
|
||
|
||
let cond = Inst::jmp_if_false(3, 9);
|
||
assert_eq!(cond.rd, Operand::Reg(3));
|
||
assert_eq!(cond.b, Operand::Label(9));
|
||
|
||
let true_jmp = Inst::jmp_if_true(3, 9);
|
||
assert_eq!(true_jmp.b, Operand::Label(9));
|
||
|
||
let nullish = Inst::jmp_if_nullish(3, 9);
|
||
assert_eq!(nullish.b, Operand::Label(9));
|
||
|
||
let try_begin = Inst::try_begin(9);
|
||
assert_eq!(try_begin.b, Operand::Label(9));
|
||
assert_eq!(try_begin.rd, Operand::None);
|
||
|
||
let try_fin = Inst::try_finally_begin(9);
|
||
assert_eq!(try_fin.b, Operand::Label(9));
|
||
}
|
||
|
||
#[test]
|
||
fn template_str_packs_segment_count_and_hint() {
|
||
let inst = Inst::template_str(Operand::Reg(1), 3, 10, &[0x1234, 0x8000_0000 | 5]);
|
||
assert_eq!(inst.op, OpCode::TEMPLATE_STR);
|
||
assert_eq!(inst.rd, Operand::Reg(1));
|
||
assert_eq!(inst.ext.len(), 3);
|
||
assert_eq!(inst.ext[0], (3 << 16) | 10);
|
||
assert_eq!(inst.ext[1], 0x1234);
|
||
assert_eq!(inst.ext[2], 0x8000_0000 | 5);
|
||
}
|
||
}
|