[CODEGEN] A First commit of codegen C

python/tvm/__init__.py

@@ -8,6 +8,7 @@
 from . import stmt
 from . import make
 from . import ir_pass
+from . import codegen
 from . import collections
 from . import schedule
 

python/tvm/_ctypes/_api.py

@@ -281,6 +281,7 @@ def _init_function_module(root_namespace):
     namespace_match = {
         "_make_": sys.modules["%s.make" % root_namespace],
         "_pass_": sys.modules["%s.ir_pass" % root_namespace],
+        "_codegen_": sys.modules["%s.codegen" % root_namespace],
         "_schedule_": sys.modules["%s.schedule" % root_namespace]
     }
 

python/tvm/codegen.py

@@ -0,0 +1 @@
+"""Code generation related functions"""

src/base/common.h

@@ -30,7 +30,7 @@ inline Type String2Type(std::string s) {
   } else if (s.substr(0, 5) == "float") {
     code = Type::Float; s = s.substr(5);
   } else if (s == "handle") {
-    return Type(Type::Handle, 0, 0);
+    return Type(Type::Handle, 32, 1);
   } else {
     LOG(FATAL) << "unknown type " << s;
   }

src/c_api/c_api_codegen.cc

@@ -0,0 +1,25 @@
+/*!
+ *  Copyright (c) 2016 by Contributors
+ *  Implementation of API functions related to IR build
+ * \file c_api_ir.cc
+ */
+#include <tvm/expr.h>
+#include <tvm/ir.h>
+
+#include "./c_api_registry.h"
+#include "../codegen/codegen_c.h"
+
+namespace tvm {
+namespace codegen {
+
+using ArgStack = const std::vector<APIVariantValue>;
+using RetValue = APIVariantValue;
+
+TVM_REGISTER_API(_codegen_CompileToC)
+.set_body([](const ArgStack& args, RetValue *ret) {
+    *ret = CodeGenC().Compile(
+        args.at(0), args.at(1), args.at(2), args.at(3));
+  });
+
+}  // namespace codegen
+}  // namespace tvm