Add in Array, fix most of IR

HalideIR @ 9070ac36

-Subproject commit 872099363b9f16a6cd4a4e8e46b9bd8dd1b861e9
+Subproject commit 9070ac3697931ef5aeb8c373c23b2e8a2fec4627

python/tvm/__init__.py

@@ -6,3 +6,4 @@ from ._ctypes._api import register_node
 from . import expr
 from . import stmt
 from . import make
+from . import domain

python/tvm/_ctypes/_api.py

@@ -5,7 +5,7 @@ from __future__ import absolute_import as _abs
 
 import ctypes
 import sys
-from numbers import Number as Number
+from numbers import Number, Integral
 
 from .._base import _LIB
 from .._base import c_str, py_str, string_types
@@ -93,6 +93,27 @@ class NodeBase(object):
             names.append(py_str(plist[i]))
         return names
 
+def const(value, dtype=None):
+    """construct a constant"""
+    if dtype is None:
+        if isinstance(value, Integral):
+            dtype = 'int32'
+        else:
+            dtype = 'float32'
+    return _function_internal._const(value, dtype)
+
+
+def convert(value):
+    """Convert a value to expression."""
+    if isinstance(value, Number):
+        return const(value)
+    elif isinstance(value, list):
+        value = [convert(x) for x in value]
+        return _function_internal._Array(*value)
+    else:
+        if not isinstance(value, NodeBase):
+            raise ValueError("don't know how to handle type %s" % type(value))
+
 
 def _push_arg(arg):
     a = ArgVariant()
@@ -147,9 +168,16 @@ def _make_function(handle, name):
     doc_str = doc_str % (desc, param_str)
     arg_names = [py_str(arg_names[i]) for i in range(num_args.value)]
 
-    def func(*args, **kwargs):
+    def func(*args):
         """TVM function"""
-        for arg in args:
+        cargs = []
+        for x in args:
+            if isinstance(x, list):
+                cargs.append(convert(x))
+            else:
+                cargs.append(x)
+
+        for arg in cargs:
             _push_arg(arg)
         ret_val = ArgVariant()
         ret_typeid = ctypes.c_int()

python/tvm/domain.py

+from __future__ import absolute_import as _abs
+from ._ctypes._api import NodeBase, register_node
+from . import _function_internal
+
+@register_node
+class Array(NodeBase):
+    def __getitem__(self, i):
+        if i >= len(self):
+            raise IndexError("array index out ot range")
+        return _function_internal._ArrayGetItem(self, i)
+
+    def __len__(self):
+        return _function_internal._ArraySize(self)
+
+    def __repr__(self):
+        return '[' + (','.join(str(x) for x in self)) + ']'

python/tvm/expr.py

@@ -52,6 +52,10 @@ class CmpExpr(Expr):
 class LogicalExpr(Expr):
     pass
 
+@register_node("Variable")
+class Var(Expr):
+    pass
+
 @register_node
 class FloatImm(ConstExpr):
     pass

python/tvm/function.py

@@ -8,6 +8,7 @@ int32 = "int32"
 float32 = "float32"
 
 def const(value, dtype=None):
+    """construct a constant"""
     if dtype is None:
         if isinstance(value, _Integral):
             dtype = 'int32'
@@ -16,12 +17,26 @@ def const(value, dtype=None):
     return _function_internal._const(value, dtype)
 
 
-def _symbol(value):
+def Var(name="tindex", dtype=int32):
+    """Create a new variable with specified name and dtype
+
+    Parameters
+    ----------
+    name : str
+        The name
+
+    dtype : int
+        The data type
+    """
+    return _function_internal._Var(name, dtype)
+
+
+def convert(value):
     """Convert a value to expression."""
     if isinstance(value, _Number):
         return const(value)
     elif isinstance(value, list):
-        value = [_symbol(x) for x in value]
+        value = [convert(x) for x in value]
         return _function_internal._Array(*value)
     else:
         return value

python/tvm/stmt.py

@@ -21,6 +21,10 @@ class ProducerConsumer(Stmt):
 
 @register_node
 class For(Stmt):
+    Serial = 0
+    Parallel = 1
+    Vectorized = 2
+    Unrolled = 3
     pass
 
 @register_node

src/c_api/c_api_function.cc

@@ -40,9 +40,46 @@ TVM_REGISTER_API(format_str)
       os << args.at(0).operator Expr();
     } else if (dynamic_cast<const BaseStmtNode*>(sptr.get())) {
       os << args.at(0).operator Stmt();
+    } else {
+      LOG(FATAL) << "don't know how to print input NodeBaseType";
     }
     *ret = os.str();
   })
 .add_argument("expr", "Node", "expression to be printed");
 
+TVM_REGISTER_API(_Array)
+.set_body([](const ArgStack& args,  RetValue *ret) {
+    std::vector<std::shared_ptr<Node> > data;
+    for (size_t i = 0; i < args.size(); ++i) {
+      CHECK(args.at(i).type_id == kNodeHandle);
+      data.push_back(args.at(i).sptr);
+    }
+    auto node = std::make_shared<ArrayNode>();
+    node->data = std::move(data);
+    ret->type_id = kNodeHandle;
+    ret->sptr = node;
+  });
+
+TVM_REGISTER_API(_ArrayGetItem)
+.set_body([](const ArgStack& args,  RetValue *ret) {
+    CHECK(args.at(0).type_id == kNodeHandle);
+    int64_t i = args.at(1);
+    auto& sptr = args.at(0).sptr;
+    CHECK(sptr->is_type<ArrayNode>());
+    auto* n = static_cast<const ArrayNode*>(sptr.get());
+    CHECK_LT(static_cast<size_t>(i), n->data.size())
+        << "out of bound of array";
+    ret->sptr = n->data[i];
+    ret->type_id = kNodeHandle;
+  });
+
+TVM_REGISTER_API(_ArraySize)
+.set_body([](const ArgStack& args,  RetValue *ret) {
+    CHECK(args.at(0).type_id == kNodeHandle);
+    auto& sptr = args.at(0).sptr;
+    CHECK(sptr->is_type<ArrayNode>());
+    *ret = static_cast<int64_t>(
+        static_cast<const ArrayNode*>(sptr.get())->data.size());
+  });
+
 }  // namespace tvm

src/c_api/c_api_ir.cc

@@ -14,6 +14,30 @@ using namespace Halide::Internal;
 using ArgStack = const std::vector<APIVariantValue>;
 using RetValue = APIVariantValue;
 
+TVM_REGISTER_API(_Var)
+.set_body([](const ArgStack& args,  RetValue *ret) {
+    *ret = Variable::make(args.at(1), args.at(0));
+  });
+
+TVM_REGISTER_API(_make_For)
+.set_body([](const ArgStack& args,  RetValue *ret) {
+    *ret = For::make(args.at(0),
+                     args.at(1),
+                     args.at(2),
+                     static_cast<ForType>(args.at(3).operator int()),
+                     static_cast<Halide::DeviceAPI>(args.at(4).operator int()),
+                     args.at(5));
+  });
+
+TVM_REGISTER_API(_make_Allocate)
+.set_body([](const ArgStack& args,  RetValue *ret) {
+    *ret = Allocate::make(args.at(0),
+                          args.at(1),
+                          args.at(2),
+                          args.at(3),
+                          args.at(4));
+  });
+
 // make from two arguments
 #define REGISTER_MAKE1(Node)                                 \
   TVM_REGISTER_API(_make_## Node)                            \
@@ -67,13 +91,12 @@ REGISTER_MAKE3(Select);
 REGISTER_MAKE3(Ramp);
 REGISTER_MAKE2(Broadcast);
 REGISTER_MAKE3(Let);
+// TODO(tqchen) Call;
 REGISTER_MAKE3(LetStmt);
 REGISTER_MAKE2(AssertStmt);
 REGISTER_MAKE3(ProducerConsumer);
-// TODO(tqchen) For;
 REGISTER_MAKE3(Store);
-// TODO(tqchen) Provide;
-// TODO(tqchen) Allocate;
+REGISTER_MAKE3(Provide);
 REGISTER_MAKE1(Free);
 // TODO(tqchen) Realize;
 REGISTER_MAKE2(Block);

src/c_api/c_api_registry.h

@@ -96,8 +96,10 @@ struct APIVariantValue {
   }
   inline operator Expr() const {
     if (type_id == kNull) return Expr();
-    if (type_id == kLong) return Expr(operator int64_t());
-    if (type_id == kDouble) return Expr(operator double());
+    if (type_id == kLong) return Expr(operator int());
+    if (type_id == kDouble) {
+      return Expr(static_cast<float>(operator double()));
+    }
     CHECK_EQ(type_id, kNodeHandle);
     return Expr(sptr);
   }

tests/python/test_basic.py

@@ -19,7 +19,26 @@ def test_ir():
     assert isinstance(stmt, tvm.stmt.Evaluate)
     print tvm.format_str(stmt)
 
+def test_basic():
+    a = tvm.Var('a')
+    b = tvm.Var('b')
+    c =  a + b
+    assert tvm.format_str(c) == '(%s + %s)' % (a.name, b.name)
+
+def test_array():
+    a = tvm.convert([1,2,3])
+
+def test_stmt():
+    print tvm.make.Provide('a', [1,2,3], [1,2,3])
+    print tvm.make.For('a', 0, 1,
+                       tvm.stmt.For.Serial, 0,
+                       tvm.make.Evaluate(0))
+
+
+
 if __name__ == "__main__":
     test_const()
     test_make()
     test_ir()
+    test_basic()
+    test_stmt()