diff --git a/src/bin/runcpu.ts b/src/bin/runcpu.ts
index cd43078..a3387a3 100644
--- a/src/bin/runcpu.ts
+++ b/src/bin/runcpu.ts
@@ -29,6 +29,15 @@ const argv = await yargs(hideBin(process.argv))
         choices: ['test', 'train', 'ref'],
         default: 'ref',
     })
+    .option('optimize-profile', {
+        type: 'string',
+        choices: ['O2', 'base'],
+        demandOption: true,
+    })
+    .option('allow-misaligned', {
+        type: 'boolean',
+        default: false,
+    })
     .option('spec', {
         alias: 's',
         type: 'string',
@@ -90,7 +99,7 @@ const uuid = crypto.randomUUID();
 
 const prefix = path.resolve(argv.compilerPrefix);
 
-const o3LTOFlags = [
+const baseFlags = [
     "-O3",
     "-flto",
     "-fuse-ld=lld",
@@ -109,7 +118,8 @@ const specProc = await spawnSPECWithID(
     spec,
     {
         optimize: [
-            "-O2",
+            ...argv.optimizeProfile === "O2" ? ["-O2"] : baseFlags,
+            ...argv.allowMisaligned ? unalignedFlags : [],
             ...sw64TargetOptions({ simd: argv.simd }),
             ...argv.compilerSuite == "llvm" ? [sunway.mcpu(sunwayGeneration)] : [], // Only add -mcpu for llvm
         ],