Fix x87_op being outside of structure, fixing crashes in ARM64 NDR

src/codegen_new/codegen_reg.c

@@ -226,6 +226,20 @@ reg_is_native_size(ir_reg_t ir_reg)
     return 0;
 }
 
+void
+codegen_check_regs(void)
+{
+    int i = 0;
+    for (i = 0; i < IREG_COUNT; i++) {
+        if (ireg_data[i].is_volatile == REG_VOLATILE)
+            continue;
+
+        if (ireg_data[i].p && ((uintptr_t)ireg_data[i].p - (uintptr_t)&cpu_state) >= sizeof(cpu_state)) {
+            fatal("Register number %d outside cpu_state!\n", i);
+        }
+    }
+}
+
 void
 codegen_reg_reset(void)
 {