Fix for a rotation transformation bug.

rotatedValueBitSize should be calculated from genActualType(rotatedValue->gtType) instead of rotatedValue->gtType.
I added a test that was failing with an assert because of this bug: rol32ushort.

1 files changed, 15 insertions, 1 deletions

diff --git a/tests/src/JIT/CodeGenBringUpTests/Rotate.cs b/tests/src/JIT/CodeGenBringUpTests/Rotate.cs
index 936718ce50..f5c2c04d15 100644
--- a/tests/src/JIT/CodeGenBringUpTests/Rotate.cs
+++ b/tests/src/JIT/CodeGenBringUpTests/Rotate.cs
@@ -14,6 +14,8 @@ public class Test
 
     volatile uint volatile_field;
 
+    ushort usfield;
+
     [MethodImpl(MethodImplOptions.NoInlining)]
     static uint rol32(uint value, int amount)
     {
@@ -166,10 +168,17 @@ public class Test
         return (value >> 10) | (value << 5);
     }
 
-    Test(ulong i, uint j)
+    [MethodImpl(MethodImplOptions.NoInlining)]
+    uint rol32ushort(int amount)
+    {
+        return ((uint)usfield << amount) | ((uint)usfield >> (32 - amount));
+    }
+
+    Test(ulong i, uint j, ushort k)
     {
         field = i;
         volatile_field = j;
+        usfield = k;
     }
 
     public static int Main()
@@ -291,6 +300,11 @@ public class Test
             return Fail;
         }
 
+        if (test.rol32ushort(25) != 0x68000024)
+        {
+            return Fail;
+        }
+
         return Pass;
     }
 }