vm fix for bitwise signed ints (#10507)

* fixes #10482

* add missing file

* bug fix

1 files changed, 39 insertions, 0 deletions

diff --git a/tests/vm/tbitops.nim b/tests/vm/tbitops.nim
new file mode 100644
index 000000000..3d1a8aa0c
--- /dev/null
+++ b/tests/vm/tbitops.nim
@@ -0,0 +1,39 @@
+discard """
+output: ""
+"""
+
+import strutils
+
+const x  = [1'i32, -1, -10, 10, -10, 10, -20, 30, -40, 50, 7 shl 28, -(7 shl 28), 7 shl 28, -(7 shl 28)]
+const y  = [-1'i32, 1, -10, -10, 10, 10, -20, -30, 40, 50, 1 shl 30, 1 shl 30, -(1 shl 30), -(1 shl 30)]
+
+
+const res_xor = block:
+  var tmp: seq[int64]
+  for i in 0..<x.len:
+    tmp.add(int64(x[i] xor y[i]))
+  tmp
+
+const res_and = block:
+  var tmp: seq[int64]
+  for i in 0..<x.len:
+    tmp.add(int64(x[i] and y[i]))
+  tmp
+ 
+const res_or = block:
+  var tmp: seq[int64]
+  for i in 0..<x.len:
+    tmp.add(int64(x[i] or y[i]))
+  tmp
+
+
+let xx = x
+let yy = y
+
+for i in 0..<xx.len:
+  let z_xor = int64(xx[i] xor yy[i])
+  let z_and = int64(xx[i] and yy[i])
+  let z_or = int64(xx[i] or yy[i])
+  doAssert(z_xor == res_xor[i], $i & ": " & $res_xor[i] & "  " & $z_xor)
+  doAssert(z_and == res_and[i], $i & ": " & $res_and[i] & "  " & $z_and)
+  doAssert(z_or == res_or[i], $i & ": " & $res_or[i] & "  " & $z_or)