Merge branch 'master' into bitcast_spec

test/null/test_bitcast_spec.py

@@ -0,0 +1,45 @@
+import unittest
+from tinygrad import UOp, dtypes
+from tinygrad.uop.ops import shape_to_shape_arg, ParamArg, Ops, AddrSpace
+
+def placeholder(shape, dtype, slot):
+  return UOp(Ops.PARAM, dtype, (shape_to_shape_arg(shape),), arg=ParamArg(slot, AddrSpace.GLOBAL))
+
+class TestBitcastSpec(unittest.TestCase):
+  def test_bitcast_no_shape_change(self):
+    pl = placeholder((10,10), dtypes.int, 0)
+    out = pl.bitcast(dtypes.float)
+    self.assertEqual(out.shape, (10,10))
+
+  def test_bitcast_increase_shape(self):
+    pl = placeholder((10,10), dtypes.int, 0)
+    out = pl.bitcast(dtypes.short)
+    self.assertEqual(out.shape, (10,20))
+
+  def test_bitcast_decrease_shape(self):
+    pl = placeholder((10,10), dtypes.int, 0)
+    out = pl.bitcast(dtypes.long)
+    self.assertEqual(out.shape, (10,5))
+
+  def test_bitcast_remove_ones(self):
+    pl = placeholder((10,2), dtypes.int, 0)
+    out = pl.bitcast(dtypes.long)
+    self.assertEqual(out.shape, (10,1))
+
+  def test_bitcast_remove_ones_full(self):
+    pl = placeholder((2,), dtypes.int, 0)
+    out = pl.bitcast(dtypes.long)
+    self.assertEqual(out.shape, (1,))
+
+  def test_bitcast_add_ones_full(self):
+    pl = placeholder((), dtypes.long, 0)
+    out = pl.bitcast(dtypes.int)
+    self.assertEqual(out.shape, (2,))
+
+  def test_bitcast_add_ones_full_uchar(self):
+    pl = placeholder((), dtypes.long, 0)
+    out = pl.bitcast(dtypes.uchar)
+    self.assertEqual(out.shape, (8,))
+
+if __name__ == '__main__':
+  unittest.main()