perf: 不可变常量改 OnceLock 一次性缓存,删 Constant 死变体并移出 GC 根

2026-10-23 18:21:13 +08:00 · 2026-06-25 14:32:49 +08:00
parent 63737ef74d
commit 1cab5bde65
9 changed files with 115 additions and 192 deletions
@@ -4,8 +4,9 @@ impl Vm {
    #[inline(always)]
    pub(crate) fn dispatch_load_const(&mut self, rd: usize, instr: u32) -> Result<(), String> {
        let idx = (instr >> 16) as usize;
-        if idx < self.constants.len() {
-            self.regs[rd] = self.constants[idx];
+        let imm = self.immutables();
+        if idx < imm.len() {
+            self.regs[rd] = imm[idx];
            Ok(())
        } else {
            Err(format!("constant index {idx} out of bounds"))