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perf: DCE 管线复用，零删除免重建 CFG 与活集

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彭俊皓
2026-10-12 11:54:29 +00:00
parent 3c13aed5fb
commit a803fbff93
12 changed files with 110 additions and 60 deletions
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crates/oxide_dce/tests/precise_eq.rs
+3 -3
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@@ -17,7 +17,7 @@ fn run_source(src: &str, precise: bool) -> Result<JsValue, String> {
let mut ir = oxide_emit::Emitter::new()
.emit_program(&program, false, false)
.expect("emit failed");
oxide_dce::dce(&mut ir); // 保守轮恒定（两跑一致）
let _ = oxide_dce::dce(&mut ir); // 保守轮恒定（两跑一致）
if precise {
let cfg = oxide_cfg::build_cfg(&ir);
let live = oxide_liveness::liveness(&ir, &cfg);
@@ -78,7 +78,7 @@ fn top_level_store_var_survives_precise() {
let mut ir = oxide_emit::Emitter::new()
.emit_program(&program, false, false)
.expect("emit failed");
oxide_dce::dce(&mut ir);
let _ = oxide_dce::dce(&mut ir);
let cfg = oxide_cfg::build_cfg(&ir);
let live = oxide_liveness::liveness(&ir, &cfg);
oxide_dce::dce_precise(&mut ir, &live);
@@ -104,7 +104,7 @@ fn precise_removes_dead_local_store() {
.expect("emit failed");
assert_eq!(ir.nested.len(), 1);
let mut sub = ir.nested[0].clone();
oxide_dce::dce(&mut sub);
let _ = oxide_dce::dce(&mut sub);
let cfg = oxide_cfg::build_cfg(&sub);
let live = oxide_liveness::liveness(&sub, &cfg);
oxide_dce::dce_precise(&mut sub, &live);