[TOPI][ARM] Improve injective schedule (apache#2801)

topi/python/topi/arm_cpu/__init__.py

@@ -4,3 +4,4 @@
 from . import depthwise_conv2d
 from . import conv2d_transpose
 from . import bitserial_conv2d
+from . import injective

topi/python/topi/arm_cpu/injective.py

@@ -0,0 +1,37 @@
+# pylint: disable=invalid-name, unused-variable
+"""Schedule for pooling operators"""
+import tvm
+from .. import generic
+
+@generic.schedule_injective.register(["arm_cpu"])
+def schedule_injective(outs):
+    """ARM CPU schedule for injective op.
+
+    Parameters
+    ----------
+    outs: Array of Tensor
+          The computation graph description of injective in the format
+          of an array of tensors.
+
+    Returns
+    -------
+    sch: Schedule
+        The computation schedule for the op.
+    """
+    outs = [outs] if isinstance(outs, tvm.tensor.Tensor) else outs
+    s = tvm.create_schedule([x.op for x in outs])
+    x = outs[0]
+    if list(s[x].op.axis):
+        # do not vectorize for broadcast
+        (io, ii) = s[x].split(list(s[x].op.axis)[-1], 8)
+        s[x].vectorize(ii)
+    tvm.schedule.AutoInlineInjective(s)
+    if len(s[x].op.axis) >= 4:
+        fused = s[x].fuse(s[x].op.axis[0], s[x].op.axis[1], s[x].op.axis[2])
+        s[x].parallel(fused)
+    elif len(s[x].op.axis) >= 3:
+        fused = s[x].fuse(s[x].op.axis[0], s[x].op.axis[1])
+        s[x].parallel(fused)
+    elif len(s[x].op.axis) >= 2:
+        s[x].parallel(s[x].op.axis[0])
+    return s

topi/tests/python/test_topi_resize.py

@@ -5,6 +5,8 @@
 import topi.testing
 import math
 
+from common import get_all_backend
+
 def verify_bilinear_scale(batch, in_channel, in_height, in_width, out_height, out_width, layout='NCHW', align_corners=False):
 
     if layout == 'NCHW':
@@ -40,7 +42,7 @@ def check_device(device):
 
         tvm.testing.assert_allclose(b.asnumpy(), b_np, rtol=1e-3, atol=1e-3)
 
-    for device in ['llvm', 'cuda', 'vulkan', 'nvptx']:
+    for device in get_all_backend():
         check_device(device)
 
 def test_resize():

topi/tests/python/test_topi_upsampling.py

@@ -5,6 +5,8 @@
 import topi.testing
 import math
 
+from common import get_all_backend
+
 def verify_upsampling(batch, in_channel, in_height, in_width, scale, layout='NCHW', method="NEAREST_NEIGHBOR"):
 
 
@@ -45,7 +47,7 @@ def check_device(device):
 
         tvm.testing.assert_allclose(b.asnumpy(), b_np, rtol=1e-5, atol=1e-5)
 
-    for device in ['llvm', 'cuda', 'vulkan', 'nvptx']:
+    for device in get_all_backend():
         check_device(device)
 
 def test_upsampling():