MLBEDSW-4838 Added basic TOSA support.

Added basic TOSA support, enabling Vela to
read and compile  a .tosa file corresponding to
CONV2D + Rescale + Clamp, and writing it to an
optimized .tflite file.

The optimized .tflite file, will in this case, hold
a commandstream where the Rescale and Clamp has been
fused into the CONV2D.

The optimized tflite file is not output from Vela.

  -Added support to read .tosa file into Vela
    internal structure.
      - Added tosa_reader.py, tosa_mapper.py and
        helper files stored under tosa/
      - Support for this limited to ~10 ops

    -Added reader_util.py for functions common
    for TOSA and TFLite

    -Added tosa_graph_optimiser.py
      -Added support to fuse Rescale into convolution
      -Modified handling for padding

    -Added support to fuse Clamp to previous op

    -Added graph_optimiser_util.py
      -Moved functions common for TOSA/TFLite graph
       optimization to this file.

    -Renamed graph_optimiser.py to tflite_graph_optmiser.py

    -Added separate tosa_supported_operators.py

    -Added supported_operator_util.py
       -For functions in common for TOSA/TFLite

Signed-off-by: Patrik Gustavsson <patrik.gustavsson@arm.com>
Change-Id: Ic3c540504ec8c5eb4771397fdc6882050ecf33ab

1 files changed, 75 insertions, 0 deletions

diff --git a/ethosu/vela/tosa/Op.py b/ethosu/vela/tosa/Op.py
new file mode 100644
index 00000000..c71ac44a
--- /dev/null
+++ b/ethosu/vela/tosa/Op.py
@@ -0,0 +1,75 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tosa
+
+class Op(object):
+    UNKNOWN = 0
+    ARGMAX = 1
+    AVG_POOL2D = 2
+    CONV2D = 3
+    CONV3D = 4
+    DEPTHWISE_CONV2D = 5
+    FULLY_CONNECTED = 6
+    MATMUL = 7
+    MAX_POOL2D = 8
+    TRANSPOSE_CONV2D = 9
+    CLAMP = 10
+    RELUN = 11
+    SIGMOID = 12
+    TANH = 13
+    ADD = 14
+    ARITHMETIC_RIGHT_SHIFT = 15
+    BITWISE_AND = 16
+    BITWISE_OR = 17
+    BITWISE_XOR = 18
+    DIV = 19
+    LOGICAL_AND = 20
+    LOGICAL_LEFT_SHIFT = 21
+    LOGICAL_RIGHT_SHIFT = 22
+    LOGICAL_OR = 23
+    LOGICAL_XOR = 24
+    MAXIMUM = 25
+    MINIMUM = 26
+    MUL = 27
+    POW = 28
+    SUB = 29
+    TABLE = 30
+    ABS = 31
+    BITWISE_NOT = 32
+    CEIL = 33
+    CLZ = 34
+    EXP = 35
+    FLOOR = 36
+    LOG = 37
+    LOGICAL_NOT = 38
+    NEGATE = 39
+    RECIPROCAL = 40
+    RSQRT = 41
+    SELECT = 42
+    EQUAL = 43
+    GREATER = 44
+    GREATER_EQUAL = 45
+    REDUCE_ANY = 46
+    REDUCE_ALL = 47
+    REDUCE_MAX = 48
+    REDUCE_MIN = 49
+    REDUCE_PRODUCT = 50
+    REDUCE_SUM = 51
+    CONCAT = 52
+    PAD = 53
+    RESHAPE = 54
+    REVERSE = 55
+    SLICE = 56
+    TILE = 57
+    TRANSPOSE = 58
+    GATHER = 59
+    SCATTER = 60
+    RESIZE = 61
+    CAST = 62
+    RESCALE = 63
+    CONST = 64
+    IDENTITY = 65
+    CUSTOM = 66
+    COND_IF = 67
+    WHILE_LOOP = 68
+