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perf: 逐指令活集拍平为单一位集加消费方维度守卫同步

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彭俊皓
2026-10-12 12:18:10 +00:00
parent 215c74fe0b
commit 3cabfb70f9
12 changed files with 92 additions and 71 deletions
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crates/oxide_dce/src/precise_sweep.rs
+1 -1
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@@ -38,7 +38,7 @@ pub(super) fn pass_dead_with_liveness(f: &IRFunction, live: &LiveInfo, keep: &mu
if !keep[i] || label_target[i] {
continue;
}
let after = &live.inst_live_after[i];
let after = &live.inst_live_after[i * live.words..(i + 1) * live.words];
let not_live_after = |r: u32| !oxide_liveness::bitset_get(after, r as usize);
// 通用规则：纯指令结果不被后续使用 → 删（is_pure=false 已防 CALL/SPILL/UNSPILL）
if let Some(r) = inst.def_reg() {