target/hexagon: import additional tests

Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Niccolò Izzo <nizzo@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-12-anjo@rev.ng>

tests/tcg/hexagon/test_bitsplit.S

@@ -0,0 +1,22 @@
+/* Purpose: test example, verify the soundness of the bitsplit operation */
+
+    .text
+    .globl _start
+
+_start:
+    {
+        r1 = #187
+    }
+    {
+        r3:2 = bitsplit(r1, #3)
+    }
+    {
+        p0 = cmp.eq(r2, #3); if (p0.new) jump:t test2
+        jump fail
+    }
+
+test2:
+    {
+        p0 = cmp.eq(r3, #23); if (p0.new) jump:t pass
+        jump fail
+    }