diff --git a/src/utils/CLI.cpp b/src/utils/CLI.cpp
index 16245faa..1f37c290 100644
--- a/src/utils/CLI.cpp
+++ b/src/utils/CLI.cpp
@@ -87,6 +87,17 @@ CLIOptions ParseCLI(int argc, char** argv) {
       continue;
     }
 
+    // 寄存器分配器选择
+    if (std::strncmp(arg, "--regalloc=", 12) == 0) {
+      opt.regalloc = arg + 12;
+      if (opt.regalloc != "linear" && opt.regalloc != "graphcoloring") {
+        throw std::runtime_error(
+            FormatError("cli", std::string("未知寄存器分配器: ") + opt.regalloc +
+                                   "（可选: graphcoloring, linear）"));
+      }
+      continue;
+    }
+
     // 兼容旧格式
     if (std::strcmp(arg, "--emit-parse-tree") == 0) {
       if (!explicit_emit) {