[TVMScript] refactor (apache#6734)

* [TVMScript] refactor

* [TVMScript] pylint

* [TVMScript] pylint

python/tvm/script/__init__.py

@@ -16,5 +16,4 @@
 # under the License.
 """TVM Script APIs of TVM Python Package, aimed to support TIR"""
 
-from .utils import create_module, asscript, tir, module
-from .parser import from_source
+from .parser import from_source, create_module, asscript, tir, module

python/tvm/script/_ffi_api.py

@@ -14,7 +14,7 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-"""FFI APIs for tvm.tvmscript"""
+"""FFI APIs for tvm.script"""
 import tvm._ffi
 
 tvm._ffi._init_api("script", __name__)

python/tvm/script/scope_emitter.py → python/tvm/script/context_maintainer.py

@@ -14,27 +14,36 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-"""TVM Script Scope Emitter for TIR"""
+"""TVM Script Context Maintainer for TIR"""
 
 from tvm.te import schedule
 
 
-class ScopeEmitter:
-    """Maintain the nodes and symbols of scopes"""
+class ContextMaintainer:
+    """Maintain all the necessary context info"""
 
     def __init__(self, parser):
-        self.node_stack = [[]]  # AST nodes of scopes
-        self.symbols = [dict()]  # Symbols of scopes
+        # scope context
+        self.node_stack = []  # AST nodes of scopes
+        self.symbols = []  # symbols of scopes
+        # function context
+        self.func_params = []  # parameter list of function
+        self.func_buffer_map = {}  # buffer_map of function
+        self.func_dict_attr = {}  # func_attr of function
+        self.func_var_env_dict = {}  # map from var to env_name
+        # parser
         self.parser = parser
 
     def pop_scope(self):
         """Pop the inner most scope"""
         self.symbols.pop()
         self.node_stack.pop()
 
-    def new_scope(self):
-        """ Creating a new scope """
-        self.node_stack.append([])
+    def new_scope(self, nodes=None):
+        """Creating a new scope"""
+        if nodes is None:
+            nodes = []
+        self.node_stack.append(list(reversed(nodes)))
         self.symbols.append(dict())
 
     def update_symbol(self, name, symbol):
@@ -60,3 +69,6 @@ def lookup_symbol(self, name):
             if name in symbols:
                 return symbols[name]
         return None
+
+    def report_error(self, message):
+        self.parser.report_error(message)

python/tvm/script/intrin.py

@@ -14,127 +14,127 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-"""TVM Script Parser Intrinsic Functions
-
-IRNodes (StmtNodes without body, PrimExprNodes and more) are called intrins
-"""
-# pylint: disable=redefined-builtin
+"""TVM Script Parser Intrinsic Classes"""
+# pylint: disable=redefined-builtin, relative-beyond-top-level
 import tvm.tir
-from .registry import register_intrin
+from .registry import register
+from .utils import get_param_list
+
+
+class Intrin:
+    def __init__(self, intrin, stmt=False):
+        self.intrin = intrin
+        self.stmt = stmt
+
+    def signature(self):
+        return "tir." + self.intrin.__name__, get_param_list(self.intrin)
 
+    def handle(self, arg_list):
+        return self.intrin(*arg_list)
 
-@register_intrin()
+
+@register
 def bool(imm):
     return tvm.tir.const(imm, "bool")
 
 
-@register_intrin()
+@register
 def int8(imm):
     return tvm.tir.const(imm, "int8")
 
 
-@register_intrin()
+@register
 def int16(imm):
     return tvm.tir.const(imm, "int16")
 
 
-@register_intrin()
+@register
 def int32(imm):
     return tvm.tir.const(imm, "int32")
 
 
-@register_intrin()
+@register
 def int64(imm):
     return tvm.tir.const(imm, "int64")
 
 
-@register_intrin()
+@register
 def uint8(imm):
     return tvm.tir.const(imm, "uint8")
 
 
-@register_intrin()
+@register
 def uint16(imm):
     return tvm.tir.const(imm, "uint16")
 
 
-@register_intrin()
+@register
 def uint32(imm):
     return tvm.tir.const(imm, "uint32")
 
 
-@register_intrin()
+@register
 def uint64(imm):
     return tvm.tir.const(imm, "uint64")
 
 
-@register_intrin()
+@register
 def float8(imm):
     return tvm.tir.const(imm, "float8")
 
 
-@register_intrin()
+@register
 def float16(imm):
     return tvm.tir.const(imm, "float16")
 
 
-@register_intrin()
+@register
 def float32(imm):
     return tvm.tir.const(imm, "float32")
 
 
-@register_intrin()
+@register
 def float64(imm):
     return tvm.tir.const(imm, "float64")
 
 
-@register_intrin()
+@register
 def floordiv(x, y):
     return tvm.tir.floordiv(x, y)
 
 
-@register_intrin()
+@register
 def floormod(x, y):
     return tvm.tir.floormod(x, y)
 
 
-@register_intrin()
+@register
 def load(dtype, var, index, predicate=True):
     return tvm.tir.Load(dtype, var, index, predicate)
 
 
-@register_intrin()
+@register
 def cast(value, dtype):
     return tvm.tir.Cast(dtype, value)
 
 
-@register_intrin()
+@register
 def ramp(base, stride, lanes):
     return tvm.tir.Ramp(base, stride, lanes)
 
 
-@register_intrin()
+@register
 def broadcast(value, lanes):
     return tvm.tir.Broadcast(value, lanes)
 
 
-@register_intrin()
-def evaluate(value):
-    return tvm.tir.Evaluate(value)
-
-
-@register_intrin()
-def store(var, index, value, predicate=True):
-    return tvm.tir.Store(var, value, index, predicate)
-
-
-@register_intrin()
+@register
 def iter_var(var, dom, iter_type, thread_tag):
     iter_type = getattr(tvm.tir.IterVar, iter_type)
     return tvm.tir.IterVar(dom, var, iter_type, thread_tag)
 
 
-@register_intrin()
+@register
 def max(a, b):  # pylint: disable=redefined-builtin
     return tvm.tir.Max(a, b)
 
@@ -148,21 +148,39 @@ def get_axis(begin, end, iter_type):
     return tvm.tir.IterVar(block_var_dom, "bv", iter_type_dict[iter_type])
 
 
-@register_intrin()
+@register
 def range(begin, end):
     return get_axis(begin, end, "data_par")
 
 
-@register_intrin()
+@register
 def reduce_axis(begin, end):
     return get_axis(begin, end, "reduce")
 
 
-@register_intrin()
+@register
 def scan_axis(begin, end):
     return get_axis(begin, end, "scan")
 
 
-@register_intrin()
+@register
 def opaque_axis(begin, end):
     return get_axis(begin, end, "opaque")
+
+
+@register
+class EvaluateIntrin(Intrin):
+    def __init__(self):
+        def evaluate(value):
+            return tvm.tir.Evaluate(value)
+
+        super().__init__(evaluate, stmt=True)
+
+
+@register
+class StoreIntrin(Intrin):
+    def __init__(self):
+        def store(var, index, value, predicate=True):
+            return tvm.tir.Store(var, value, index, predicate)
+
+        super().__init__(store, stmt=True)