Implement Shift Opcodes for WebAssembly (#4721)

* Implement shift opcodes

* Fix HelloWasm test.

* FIx HelloWasm test program.

1 files changed, 43 insertions, 7 deletions

diff --git a/tests/src/Simple/HelloWasm/Program.cs b/tests/src/Simple/HelloWasm/Program.cs
index 4c3015816..57eb439ef 100644
--- a/tests/src/Simple/HelloWasm/Program.cs
+++ b/tests/src/Simple/HelloWasm/Program.cs
@@ -10,13 +10,14 @@ internal static class Program
     private static unsafe void Main(string[] args)
     {
         Add(1, 2);
-		int tempInt = 0;
-		(*(&tempInt)) = 9;
-		
-		TwoByteStr str = new TwoByteStr() { first = 1, second = 2 };
-		TwoByteStr str2 = new TwoByteStr() { first = 3, second = 4 };;
-		*(&str) = str2;
-		str2 = *(&str);
+
+        int tempInt = 0;
+        (*(&tempInt)) = 9;
+    
+        TwoByteStr str = new TwoByteStr() { first = 1, second = 2 };
+        TwoByteStr str2 = new TwoByteStr() { first = 3, second = 4 };;
+        *(&str) = str2;
+        str2 = *(&str);
 		
 		if(tempInt == 9)
 		{
@@ -37,6 +38,26 @@ internal static class Program
 			PrintString("\n", 1);
 			PrintString("negInt test: Ok.", 16);
 		}
+
+        var shiftLeft = ShiftLeft(1, 2) == 4;
+        if(shiftLeft)
+        {
+            PrintString("\n", 1);
+            PrintString("shiftLeft test: Ok.", 19);
+        }
+
+        var shiftRight = ShiftRight(4, 2) == 1;
+        if(shiftRight)
+        {
+            PrintString("\n", 1);
+            PrintString("shiftRight test: Ok.", 20);
+        }
+        var unsignedShift = UnsignedShift(0xFFFFFFFFu, 4) == 0x0FFFFFFFu;
+        if(unsignedShift)
+        {
+            PrintString("\n", 1);
+            PrintString("unsignedShift test: Ok.", 23);
+        }
     }
 
     private static unsafe void PrintString(string s, int length)
@@ -67,6 +88,21 @@ internal static class Program
         return -a;
     }
 
+    private static int ShiftLeft(int a, int b)
+    {
+        return a << b;
+    }
+
+    private static int ShiftRight(int a, int b)
+    {
+        return a >> b;
+    }
+
+    private static uint UnsignedShift(uint a, int b)
+    {
+        return a >> b;
+    }
+
     [DllImport("*")]
     private static unsafe extern int printf(byte* str, byte* unused);
 }