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perf: 字符串拼接消除冗余拷贝

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彭俊皓
2026-06-30 21:49:41 +08:00
parent 56d41441e5
commit 834fc9d09e
1 changed files with 6 additions and 4 deletions
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crates/oxide_vm/src/dispatch/arithmetic.rs
+6 -4
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@@ -20,8 +20,9 @@ impl Vm {
buf.clear(); buf.clear();
coercion::push_to_string(lhs, &mut buf); coercion::push_to_string(lhs, &mut buf);
coercion::push_to_string(rhs, &mut buf); coercion::push_to_string(rhs, &mut buf);
self.regs[rd] = self.new_string(&buf); let result = self.new_string_owned(buf);
self.string_buf = buf; self.string_buf = String::new();
self.regs[rd] = result;
} else { } else {
let ln = coercion::to_number(lhs); let ln = coercion::to_number(lhs);
let rn = coercion::to_number(rhs); let rn = coercion::to_number(rhs);
@@ -61,8 +62,9 @@ impl Vm {
buf.clear(); buf.clear();
coercion::push_to_string(lhs, &mut buf); coercion::push_to_string(lhs, &mut buf);
coercion::push_to_string(rhs, &mut buf); coercion::push_to_string(rhs, &mut buf);
self.regs[rd] = self.new_string(&buf); let result = self.new_string_owned(buf);
self.string_buf = buf; self.string_buf = String::new();
self.regs[rd] = result;
} else { } else {
let ln = coercion::to_number(lhs); let ln = coercion::to_number(lhs);
let rn = coercion::to_number(rhs); let rn = coercion::to_number(rhs);