add back implicit clone

juno_samples/implicit_clone/src/implicit_clone.jn

+#[entry]
+fn simple_implicit_clone(input : i32) -> i32 {
+  let arr : i32[3];
+  arr[0] = 2;
+  let arr2 = arr;
+  arr2[1] = input;
+  arr[2] = 4;
+  return arr[0] + arr2[0] + arr[1] + arr2[1] + arr[2] + arr2[2];
+}
+
+#[entry]
+fn loop_implicit_clone(input : i32) -> i32 {
+  let arr : i32[3];
+  let r : i32 = 5;
+  while input > 0 {
+    r = arr[0];
+    let arr2 = arr;
+    let x = arr2[input as usize - input as usize];
+    arr2[input as usize - input as usize] = 9;
+    if x == 0 {
+      input -= arr2[0];
+    } else {
+      r = 99;
+      break;
+    }
+  }
+  return r + 7;
+}
+
+#[entry]
+fn double_loop_implicit_clone(a : usize) -> usize {
+  for i = 0 to a {
+    let arr : i32[1];
+    for j = 0 to a {
+      arr[0] = 1;
+    }
+  }
+  return 42;
+}
+
 #[entry]
 fn tricky_loop_implicit_clone(a : usize, b : usize) -> i32 {
   let x = 0;
@@ -19,3 +59,98 @@ fn tricky_loop_implicit_clone(a : usize, b : usize) -> i32 {
   }
   return x;
 }
+
+#[entry]
+fn tricky2_loop_implicit_clone(a : usize, b : usize) -> i32 {
+  let x = 0;
+  for i = 0 to 3 {
+    let arr1 : i32[1];
+    let arr2 : i32[1];
+    if a == b {
+      arr1[0] = 6;
+    } else {
+      arr2[0] = 9;
+    }
+    arr1[0] = 2;
+    for j = 0 to 4 {
+      arr2[0] += 1;
+    }
+    x += arr2[0];
+  }
+  return x;
+}
+
+#[entry]
+fn tricky3_loop_implicit_clone(a : usize, b : usize) -> usize {
+  let x = 0;
+  for i = 0 to b {
+    let arr1 : usize[10];
+    let arr2 : usize[10];
+    arr1[1] = 1;
+    for kk = 0 to 10 {
+      arr2[kk] += arr1[kk];
+    }
+    x += arr2[1];
+  }
+  return x;
+}
+
+#[entry]
+fn no_implicit_clone(input : i32) -> i32 {
+  let arr : i32[2];
+  arr[0] = input;
+  while input > 0 {
+    arr[0] += 1;
+    input -= 1;
+  }
+  let arr2 : i32[1];
+  if input == 0 {
+    arr2[0] = 5;
+  } else {
+    arr2[0] = 3;
+  }
+  return arr[0] + arr2[0];
+}
+
+#[entry]
+fn mirage_implicit_clone(input : i32) -> i32 {
+  let arr1 : i32[2];
+  let arr2 : i32[2];
+  let arr3 : i32[2];
+  let arr4 : i32[2];
+  arr1[0] = 7;
+  arr1[1] = 3;
+  arr2[0] = input;
+  arr2[1] = 45;
+  arr3[0] = -14;
+  arr3[1] = -5;
+  arr4[0] = -1;
+  arr4[1] = 0;
+  arr2 = arr4;
+  arr3 = arr2;
+  arr2 = arr1;
+  let p1 = arr1[0] + arr1[1] + arr2[0] + arr2[1] + arr3[0] + arr3[1] + arr4[0] + arr4[1]; // 18
+  arr4 = arr2;
+  let p2 = arr1[0] + arr1[1] + arr2[0] + arr2[1] + arr3[0] + arr3[1] + arr4[0] + arr4[1]; // 29
+  if input > 0 {
+    while input > 10 {
+      arr1[0] = arr1[1] + input;
+      arr1[1] = arr1[0] + input;
+      input -= 10;
+    }
+  }
+  let p3 = arr1[0]; // 592
+  let x : i32 = 0;
+  while input < 20 {
+    let arr5 : i32[2];
+    arr5[0] = 7;
+    let y = arr5[0] + arr5[1];
+    arr5 = arr4;
+    arr5[1] += 2;
+    y += arr5[1];
+    x += 12;
+    input += 1;
+  }
+  let p4 = x; // 204
+  return p1 + p2 + p3 + p4;
+}