Lab6: fix operator precedence and resolve 64-bit pointer propagation in AArch64 lowering

scripts/run_all_tests_verbose.sh

@@ -134,7 +134,7 @@ for test_file in $test_files; do
     
     # Step 7: QEMU Execution
     echo -n "  -> Step 7: QEMU Emulator Execution ... "
-    run_timeout=3
+    run_timeout=250
     cmd_status=0
     if [ -f "$stdin_file" ]; then
         timeout $run_timeout qemu-aarch64 -L /usr/aarch64-linux-gnu "$exe_file" < "$stdin_file" > "$stdout_file" 2>/dev/null
@@ -170,7 +170,7 @@ for test_file in $test_files; do
     rm -f "$actual_file.tmp"
     
     if [ -f "$expected_file" ]; then
-        if diff -u "$expected_file" "$actual_file" > /dev/null 2>&1; then
+        if diff -u -w "$expected_file" "$actual_file" > /dev/null 2>&1; then
             echo -e "${GREEN}✓ 匹配成功${RESET}"
             echo -e "${GREEN}${BOLD}[SUCCESS]${RESET} ${test_name} 测试通过！"
             ((success_count++))