diff --git a/Cargo.lock b/Cargo.lock
index 8837f744..9bc37664 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1118,6 +1118,9 @@ dependencies = [
 [[package]]
 name = "oxide_bytecode"
 version = "0.1.0"
+dependencies = [
+ "oxide_log",
+]
 
 [[package]]
 name = "oxide_cfg"
@@ -1126,6 +1129,7 @@ dependencies = [
  "oxide_bytecode",
  "oxide_emit",
  "oxide_ir",
+ "oxide_log",
  "oxide_parser",
 ]
 
@@ -1185,6 +1189,7 @@ dependencies = [
  "oxide_emit",
  "oxide_ir",
  "oxide_liveness",
+ "oxide_log",
  "oxide_parser",
  "oxide_vm",
 ]
@@ -1195,6 +1200,7 @@ version = "0.1.0"
 dependencies = [
  "oxide_bytecode",
  "oxide_ir",
+ "oxide_log",
  "oxide_parser",
  "regex",
  "regress",
@@ -1205,6 +1211,7 @@ name = "oxide_ir"
 version = "0.1.0"
 dependencies = [
  "oxide_bytecode",
+ "oxide_log",
  "smallvec",
 ]
 
@@ -1231,6 +1238,7 @@ dependencies = [
  "oxide_cfg",
  "oxide_emit",
  "oxide_ir",
+ "oxide_log",
  "oxide_parser",
 ]
 
@@ -1254,6 +1262,7 @@ dependencies = [
  "oxc_semantic",
  "oxc_span",
  "oxc_syntax",
+ "oxide_log",
 ]
 
 [[package]]
@@ -1267,6 +1276,7 @@ dependencies = [
  "oxide_emit",
  "oxide_ir",
  "oxide_liveness",
+ "oxide_log",
  "oxide_parser",
  "oxide_vm",
 ]
@@ -1276,6 +1286,7 @@ name = "oxide_runtime_api"
 version = "0.1.0"
 dependencies = [
  "oxide_kernel",
+ "oxide_log",
  "oxide_types",
  "ryu",
 ]
@@ -1302,6 +1313,7 @@ version = "0.1.0"
 dependencies = [
  "bumpalo",
  "hashbrown 0.14.5",
+ "oxide_log",
  "proptest",
  "rustc-hash",
 ]
diff --git a/crates/oxide_bytecode/Cargo.toml b/crates/oxide_bytecode/Cargo.toml
index ed73f348..298cb98e 100644
--- a/crates/oxide_bytecode/Cargo.toml
+++ b/crates/oxide_bytecode/Cargo.toml
@@ -7,3 +7,4 @@ rust-version.workspace = true
 description = "OxideJS - Shared bytecode protocol and compiled module ABI"
 
 [dependencies]
+oxide_log = { path = "../oxide_log" }
diff --git a/crates/oxide_bytecode/src/bytecode_log.rs b/crates/oxide_bytecode/src/bytecode_log.rs
new file mode 100644
index 00000000..db222d4b
--- /dev/null
+++ b/crates/oxide_bytecode/src/bytecode_log.rs
@@ -0,0 +1,37 @@
+//! bytecode 日志宏：`bytecode_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! bytecode_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! bytecode_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! bytecode_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! bytecode_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! bytecode_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_bytecode/src/lib.rs b/crates/oxide_bytecode/src/lib.rs
index 97805159..c8bf8c8e 100644
--- a/crates/oxide_bytecode/src/lib.rs
+++ b/crates/oxide_bytecode/src/lib.rs
@@ -1,5 +1,8 @@
 #![doc = "OxideJS - Shared bytecode protocol and compiled module ABI"]
 
+/// bytecode 日志宏（`bytecode_error`/`bytecode_info` 等），target 为 `oxide::kernel`。
+mod bytecode_log;
+
 /// 编译产物与常量池 ABI（[`CompiledModule`] / [`Constant`]）。
 pub mod module;
 /// 操作码表与指令编解码（[`OpCode`] / [`Instr`]）。
diff --git a/crates/oxide_cfg/Cargo.toml b/crates/oxide_cfg/Cargo.toml
index e30079a9..671c19af 100644
--- a/crates/oxide_cfg/Cargo.toml
+++ b/crates/oxide_cfg/Cargo.toml
@@ -9,6 +9,7 @@ description = "OxideJS - basic block partition and CFG analysis pass over IR"
 [dependencies]
 oxide_ir = { path = "../oxide_ir" }
 oxide_bytecode = { path = "../oxide_bytecode" }
+oxide_log = { path = "../oxide_log" }
 
 [dev-dependencies]
 oxide_parser = { path = "../oxide_parser" }
diff --git a/crates/oxide_cfg/src/cfg_log.rs b/crates/oxide_cfg/src/cfg_log.rs
new file mode 100644
index 00000000..92d4f09c
--- /dev/null
+++ b/crates/oxide_cfg/src/cfg_log.rs
@@ -0,0 +1,37 @@
+//! CFG 日志宏：`cfg_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! cfg_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! cfg_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! cfg_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! cfg_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! cfg_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_cfg/src/lib.rs b/crates/oxide_cfg/src/lib.rs
index f4bd2d87..38bb1efd 100644
--- a/crates/oxide_cfg/src/lib.rs
+++ b/crates/oxide_cfg/src/lib.rs
@@ -8,6 +8,7 @@
 //! （异常边）→ `finalize`（exit 哨兵 + preds 反推）。每阶段是独立文件的纯函数，
 //! 中间产物（heads / blocks / exit_id）显式传参，无共享可变状态。
 
+mod cfg_log;
 mod exception;
 mod finalize;
 mod partition;
@@ -93,7 +94,9 @@ pub fn build_cfg(f: &IRFunction) -> Cfg {
     let heads = partition::partition_blocks(f);
     let (mut blocks, exit_id) = split::split_and_edges(f, &heads);
     exception::add_exception_edges(f, &mut blocks);
-    finalize::finalize(blocks, exit_id)
+    let cfg = finalize::finalize(blocks, exit_id);
+    cfg_debug!("build_cfg: {} blocks", cfg.blocks.len());
+    cfg
 }
 
 #[cfg(test)]
diff --git a/crates/oxide_compiler/src/compiler.rs b/crates/oxide_compiler/src/compiler.rs
index 5029c0d1..9d084d27 100644
--- a/crates/oxide_compiler/src/compiler.rs
+++ b/crates/oxide_compiler/src/compiler.rs
@@ -43,8 +43,10 @@ impl Compiler {
     pub fn compile(&self, program: &oxide_parser::Program) -> Result<CompiledModule, String> {
         crate::compiler_debug!("compile: starting...");
         let mut ir = Emitter::new().emit_program(program)?;
+        crate::compiler_debug!("compile: after emit {} insts", ir.insts.len());
         if self.enable_dce {
             oxide_dce::dce(&mut ir); // 顶层函数；nested 不递归
+            crate::compiler_debug!("compile: after DCE {} insts", ir.insts.len());
         }
         if self.enable_regalloc && !ir.const_overflow {
             // 优化管线：liveness → 精确 DCE → 重算 liveness → RegAlloc
@@ -56,6 +58,7 @@ impl Compiler {
             let cfg2 = oxide_cfg::build_cfg(&ir); // 精确 DCE 删指令后 inst 下标位移，CFG 重建
             let live2 = oxide_liveness::liveness(&ir, &cfg2); // 重算，绝不用过期 live
             oxide_regalloc::alloc(&mut ir, &live2)?; // 无可行染色 → RangeError 上抛
+            crate::compiler_debug!("compile: after regalloc {} insts", ir.insts.len());
         }
         crate::compiler_debug!("compile: done, {} instructions", ir.insts.len());
         let mut module = lower(&ir)?;
diff --git a/crates/oxide_dce/Cargo.toml b/crates/oxide_dce/Cargo.toml
index dab2a2bb..400104a6 100644
--- a/crates/oxide_dce/Cargo.toml
+++ b/crates/oxide_dce/Cargo.toml
@@ -11,6 +11,7 @@ oxide_ir = { path = "../oxide_ir" }
 oxide_cfg = { path = "../oxide_cfg" }
 oxide_bytecode = { path = "../oxide_bytecode" }
 oxide_liveness = { path = "../oxide_liveness" }
+oxide_log = { path = "../oxide_log" }
 
 [dev-dependencies]
 oxide_parser = { path = "../oxide_parser" }
diff --git a/crates/oxide_dce/src/dce_log.rs b/crates/oxide_dce/src/dce_log.rs
new file mode 100644
index 00000000..56e46ede
--- /dev/null
+++ b/crates/oxide_dce/src/dce_log.rs
@@ -0,0 +1,37 @@
+//! DCE 日志宏：`dce_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! dce_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! dce_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! dce_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! dce_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! dce_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_dce/src/lib.rs b/crates/oxide_dce/src/lib.rs
index dde63c76..3108baf8 100644
--- a/crates/oxide_dce/src/lib.rs
+++ b/crates/oxide_dce/src/lib.rs
@@ -13,6 +13,7 @@
 //! 精确二轮 `dce_precise`：liveness 驱动的死指令 + 局部死 STORE_VAR 删除，
 //! 消费 `oxide_liveness::LiveInfo`，mark-sweep 重建复用 Pass C。
 
+mod dce_log;
 mod iter_sweep;
 mod precise_sweep;
 mod reachability;
@@ -31,6 +32,8 @@ pub fn dce(f: &mut IRFunction) {
     let mut keep = reachability::pass_a_reachable(f);
     // Pass B：可达存活指令上全函数 use 计数迭代删除到不动点（连锁删上游写者）。
     iter_sweep::pass_b_dead_code(f, &mut keep);
+    let dead = keep.iter().filter(|k| !**k).count();
+    dce_info!("DCE: removing {} dead instructions", dead);
     // Pass C：mark-sweep 一次性重建 insts + label_pos 重映射。
     rebuild::pass_c_sweep(f, &keep);
 }
diff --git a/crates/oxide_emit/Cargo.toml b/crates/oxide_emit/Cargo.toml
index 6805ace0..251d3053 100644
--- a/crates/oxide_emit/Cargo.toml
+++ b/crates/oxide_emit/Cargo.toml
@@ -10,6 +10,7 @@ description = "OxideJS - AST to IR emit pass"
 oxide_parser = { path = "../oxide_parser" }
 oxide_bytecode = { path = "../oxide_bytecode" }
 oxide_ir = { path = "../oxide_ir" }
+oxide_log = { path = "../oxide_log" }
 regex.workspace = true
 regress.workspace = true
 
diff --git a/crates/oxide_emit/src/emit.rs b/crates/oxide_emit/src/emit.rs
index 4fb172be..604a5459 100644
--- a/crates/oxide_emit/src/emit.rs
+++ b/crates/oxide_emit/src/emit.rs
@@ -1270,6 +1270,7 @@ impl Emitter {
     /// 调用方为 `oxide_compiler::Compiler::compile`：本函数完成 emit 半程，
     /// 随后由 `oxide_ir::lower::lower` 降为字节码。
     pub fn emit_program(&self, program: &oxide_parser::Program) -> Result<IRFunction, String> {
+        crate::emit_debug!("emit_program: {} stmts", program.body.len());
         let mut ctx = CompileCtx::new();
         // 脚本顶层：var/function 声明需落到全局对象，let/const/class 不进全局。
         ctx.is_global_scope = true;
diff --git a/crates/oxide_emit/src/emit_log.rs b/crates/oxide_emit/src/emit_log.rs
new file mode 100644
index 00000000..8046d9c4
--- /dev/null
+++ b/crates/oxide_emit/src/emit_log.rs
@@ -0,0 +1,37 @@
+//! emit 日志宏：`emit_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! emit_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! emit_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! emit_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! emit_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! emit_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_emit/src/lib.rs b/crates/oxide_emit/src/lib.rs
index 7ca5fb29..3df1f338 100644
--- a/crates/oxide_emit/src/lib.rs
+++ b/crates/oxide_emit/src/lib.rs
@@ -8,6 +8,7 @@
 pub mod class;
 pub mod closure;
 pub mod emit;
+mod emit_log;
 pub mod emit_ctx;
 pub mod expr;
 pub mod prepass;
diff --git a/crates/oxide_ir/Cargo.toml b/crates/oxide_ir/Cargo.toml
index a60f3d7f..e2160f73 100644
--- a/crates/oxide_ir/Cargo.toml
+++ b/crates/oxide_ir/Cargo.toml
@@ -8,4 +8,5 @@ description = "OxideJS - IR intermediate representation and lowering to bytecode
 
 [dependencies]
 oxide_bytecode = { path = "../oxide_bytecode" }
+oxide_log = { path = "../oxide_log" }
 smallvec.workspace = true
diff --git a/crates/oxide_ir/src/ir_log.rs b/crates/oxide_ir/src/ir_log.rs
new file mode 100644
index 00000000..d5b1c1d8
--- /dev/null
+++ b/crates/oxide_ir/src/ir_log.rs
@@ -0,0 +1,37 @@
+//! IR 日志宏：`ir_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! ir_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! ir_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! ir_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! ir_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! ir_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_ir/src/lib.rs b/crates/oxide_ir/src/lib.rs
index 03dbd0f5..c6200873 100644
--- a/crates/oxide_ir/src/lib.rs
+++ b/crates/oxide_ir/src/lib.rs
@@ -13,6 +13,7 @@
 
 pub mod contract;
 pub mod inst;
+mod ir_log;
 pub mod lower;
 pub mod operand;
 
diff --git a/crates/oxide_ir/src/lower.rs b/crates/oxide_ir/src/lower.rs
index bbfacb4d..b58319cf 100644
--- a/crates/oxide_ir/src/lower.rs
+++ b/crates/oxide_ir/src/lower.rs
@@ -15,6 +15,7 @@ use crate::IRFunction;
 
 /// IRFunction → CompiledModule 等价转换。溢出/标签错误消息为既有格式，逐字保持一致。
 pub fn lower(f: &IRFunction) -> Result<CompiledModule, String> {
+    crate::ir_debug!("lower: {} insts", f.insts.len());
     // 溢出检查 1：常量池（先于寄存器——超大常量池伴生的海量 vreg 会使后续检查的
     // 稠密 bitset 表示爆内存；常量池超限是更基础的失效，先报它）
     if f.const_overflow || f.constants.len() > u16::MAX as usize {
diff --git a/crates/oxide_liveness/Cargo.toml b/crates/oxide_liveness/Cargo.toml
index e7c1760f..1f491614 100644
--- a/crates/oxide_liveness/Cargo.toml
+++ b/crates/oxide_liveness/Cargo.toml
@@ -9,6 +9,7 @@ description = "OxideJS - liveness analysis pass over IR (CFG dataflow + per-inst
 [dependencies]
 oxide_ir = { path = "../oxide_ir" }
 oxide_cfg = { path = "../oxide_cfg" }
+oxide_log = { path = "../oxide_log" }
 
 [dev-dependencies]
 oxide_parser = { path = "../oxide_parser" }
diff --git a/crates/oxide_liveness/src/lib.rs b/crates/oxide_liveness/src/lib.rs
index 28d192eb..d4a55bb6 100644
--- a/crates/oxide_liveness/src/lib.rs
+++ b/crates/oxide_liveness/src/lib.rs
@@ -7,6 +7,7 @@
 
 mod dataflow;
 mod live_info;
+mod liveness_log;
 mod ranges;
 
 pub use live_info::LiveInfo;
@@ -20,6 +21,7 @@ pub fn liveness(f: &IRFunction, cfg: &Cfg) -> LiveInfo {
     if f.insts.is_empty() {
         return LiveInfo::new();
     }
+    liveness_debug!("liveness: {} blocks, {} insts", cfg.blocks.len(), f.insts.len());
     let (block_in, block_out, reg_count) = dataflow::block_liveness(f, cfg);
     let (inst_before, inst_after) = ranges::inst_liveness(f, cfg, &block_out, &block_in, reg_count);
     LiveInfo {
diff --git a/crates/oxide_liveness/src/liveness_log.rs b/crates/oxide_liveness/src/liveness_log.rs
new file mode 100644
index 00000000..df5ded8d
--- /dev/null
+++ b/crates/oxide_liveness/src/liveness_log.rs
@@ -0,0 +1,37 @@
+//! liveness 日志宏：`liveness_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! liveness_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! liveness_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! liveness_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! liveness_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! liveness_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_parser/Cargo.toml b/crates/oxide_parser/Cargo.toml
index 339dce47..2ae63ce4 100644
--- a/crates/oxide_parser/Cargo.toml
+++ b/crates/oxide_parser/Cargo.toml
@@ -7,6 +7,7 @@ rust-version.workspace = true
 description = "OxideJS - JavaScript parser (oxc_parser re-export)"
 
 [dependencies]
+oxide_log = { path = "../oxide_log" }
 oxc_parser.workspace = true
 oxc_allocator.workspace = true
 oxc_ast.workspace = true
diff --git a/crates/oxide_parser/src/lib.rs b/crates/oxide_parser/src/lib.rs
index 0492ba24..b0ccf835 100644
--- a/crates/oxide_parser/src/lib.rs
+++ b/crates/oxide_parser/src/lib.rs
@@ -1,6 +1,7 @@
 #![doc = "OxideJS - JavaScript parser (oxc_parser re-export)"]
 
 mod error;
+mod parser_log;
 
 /// 解析错误：消息 + 源文件字节区间（起始，结束）。
 pub use error::OxideError;
diff --git a/crates/oxide_parser/src/parser_log.rs b/crates/oxide_parser/src/parser_log.rs
new file mode 100644
index 00000000..009d61f0
--- /dev/null
+++ b/crates/oxide_parser/src/parser_log.rs
@@ -0,0 +1,37 @@
+//! parser 日志宏：`parser_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! parser_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! parser_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! parser_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! parser_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! parser_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_regalloc/Cargo.toml b/crates/oxide_regalloc/Cargo.toml
index ab571077..b0d1e2f5 100644
--- a/crates/oxide_regalloc/Cargo.toml
+++ b/crates/oxide_regalloc/Cargo.toml
@@ -11,6 +11,7 @@ oxide_ir = { path = "../oxide_ir" }
 oxide_liveness = { path = "../oxide_liveness" }
 oxide_bytecode = { path = "../oxide_bytecode" }
 oxide_cfg = { path = "../oxide_cfg" }
+oxide_log = { path = "../oxide_log" }
 
 [dev-dependencies]
 oxide_parser = { path = "../oxide_parser" }
diff --git a/crates/oxide_regalloc/src/lib.rs b/crates/oxide_regalloc/src/lib.rs
index 7dd409c5..8876e504 100644
--- a/crates/oxide_regalloc/src/lib.rs
+++ b/crates/oxide_regalloc/src/lib.rs
@@ -10,6 +10,7 @@ mod alloc_map;
 mod color;
 mod finish;
 mod graph;
+mod regalloc_log;
 mod rewrite;
 
 pub use alloc_map::{Alloc, AllocMap, FreshKind, FreshVreg, SpillPlan};
@@ -50,6 +51,7 @@ pub fn alloc(f: &mut IRFunction, live: &LiveInfo) -> Result<(), String> {
         oxide_liveness::liveness(f, &cfg)
     };
     let map = color(f, &live)?;
+    regalloc_debug!("alloc: {} vregs -> {} phys", map.map.len(), map.phys_peak);
     rewrite::run(f, &map);
     finish::run(f, &map);
     for child in &mut f.nested {
diff --git a/crates/oxide_regalloc/src/regalloc_log.rs b/crates/oxide_regalloc/src/regalloc_log.rs
new file mode 100644
index 00000000..523c1bb2
--- /dev/null
+++ b/crates/oxide_regalloc/src/regalloc_log.rs
@@ -0,0 +1,37 @@
+//! RegAlloc 日志宏：`regalloc_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 编译管线属 Kernel 子系统，`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志。
+
+#[macro_export]
+macro_rules! regalloc_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! regalloc_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! regalloc_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! regalloc_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! regalloc_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_runtime_api/Cargo.toml b/crates/oxide_runtime_api/Cargo.toml
index cd1ce93f..37e3c3fb 100644
--- a/crates/oxide_runtime_api/Cargo.toml
+++ b/crates/oxide_runtime_api/Cargo.toml
@@ -9,4 +9,5 @@ description = "OxideJS - VmHost trait: the abstract Vm interface builtins are wr
 [dependencies]
 oxide_types = { path = "../oxide_types" }
 oxide_kernel = { path = "../oxide_kernel" }
+oxide_log = { path = "../oxide_log" }
 ryu.workspace = true
diff --git a/crates/oxide_runtime_api/src/lib.rs b/crates/oxide_runtime_api/src/lib.rs
index fa71cc31..c8ef3011 100644
--- a/crates/oxide_runtime_api/src/lib.rs
+++ b/crates/oxide_runtime_api/src/lib.rs
@@ -10,6 +10,8 @@
 //! trait 面向泛型而非对象安全：单态化 `H = Vm` 使每个 `host.*()` 调用内联，
 //! 相对 builtins 直接位于 `oxide_vm` 内部没有运行时开销。
 
+mod runtime_api_log;
+
 use std::sync::Arc;
 
 use oxide_kernel::kernel::{KernelCore, KernelSession};
diff --git a/crates/oxide_runtime_api/src/runtime_api_log.rs b/crates/oxide_runtime_api/src/runtime_api_log.rs
new file mode 100644
index 00000000..423a0677
--- /dev/null
+++ b/crates/oxide_runtime_api/src/runtime_api_log.rs
@@ -0,0 +1,38 @@
+//! runtime_api 日志宏：`runtime_api_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 接口层供编译管线与运行时共享，日志归 Kernel 子系统
+//! （`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志）。
+
+#[macro_export]
+macro_rules! runtime_api_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! runtime_api_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! runtime_api_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! runtime_api_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! runtime_api_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}
diff --git a/crates/oxide_types/Cargo.toml b/crates/oxide_types/Cargo.toml
index 15008e82..7ebd159e 100644
--- a/crates/oxide_types/Cargo.toml
+++ b/crates/oxide_types/Cargo.toml
@@ -9,6 +9,7 @@ description = "OxideJS - Shared core types (JsValue, JsObject, Shape, P, Epoch)"
 [dependencies]
 bumpalo.workspace = true
 hashbrown.workspace = true
+oxide_log = { path = "../oxide_log" }
 rustc-hash.workspace = true
 
 [dev-dependencies]
diff --git a/crates/oxide_types/src/lib.rs b/crates/oxide_types/src/lib.rs
index 4a4debc7..531262fe 100644
--- a/crates/oxide_types/src/lib.rs
+++ b/crates/oxide_types/src/lib.rs
@@ -13,5 +13,8 @@ pub mod shape;
 /// ECMAScript 值（NaN-boxing 的 `JsValue`）。
 pub mod value;
 
+/// 类型层日志宏（`types_error`/`types_info` 等），target 为 `oxide::kernel`。
+mod types_log;
+
 /// 重导出 [`error`] 模块的运行时错误类型。
 pub use error::{JsError, JsErrorKind};
diff --git a/crates/oxide_types/src/types_log.rs b/crates/oxide_types/src/types_log.rs
new file mode 100644
index 00000000..03cbf373
--- /dev/null
+++ b/crates/oxide_types/src/types_log.rs
@@ -0,0 +1,38 @@
+//! 类型层日志宏：`types_error!/warn!/info!/debug!/trace!`，经由 oxide_log 上报。
+//! 类型层供编译管线与运行时共享，日志归 Kernel 子系统
+//! （`OXIDE_LOG=oxide::kernel=debug` 控制本 crate 日志）。
+
+#[macro_export]
+macro_rules! types_error {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::ERROR, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! types_warn {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::WARN, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! types_info {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::INFO, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! types_debug {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::DEBUG, $($arg)*)
+    };
+}
+
+#[macro_export]
+macro_rules! types_trace {
+    ($($arg:tt)*) => {
+        oxide_log::__log_event!("oxide::kernel", oxide_log::tracing::Level::TRACE, $($arg)*)
+    };
+}