64 bit width is working

Author: NeuralCoder3

lit/autodiff/square_real.thorin

@@ -5,7 +5,7 @@
 .import autodiff;
 .import mem;
 
-.let _32 = 32;
+.let _32 = 64;
 .let R32 = %core.Real _32;
 
 
@@ -60,8 +60,11 @@
 
     // ret (6.0:R32)
 
-    .let b = %core.rop.mul (0, _32) (2.0:R32, 3.0:R32);
+    // .let b = %core.rop.mul (0, _32) (2.0:R32, 3.0:R32);
+    .let b = 6.0:R32;
     ret b
 };
 
+// could return pair of (result, pb)
+
 // CHECK-DAG: return{{.*}}176484