Upgrade TVM to latest version

vta/Makefile

@@ -58,7 +58,7 @@ VTA_LIB_SRC = $(wildcard src/*.cc src/tvm/*.cc)
 ifeq ($(TARGET), VTA_PYNQ_TARGET)
 	VTA_LIB_SRC += $(wildcard src/pynq/*.cc)
 	LDFLAGS += -L/usr/lib -lsds_lib
-	LDFLAGS += -L/opt/python3.6/lib/python3.6/site-packages/pynq/lib/ -l:libdma.so
+	LDFLAGS += -L/opt/python3.6/lib/python3.6/site-packages/pynq/drivers/ -l:libdma.so
 endif
 VTA_LIB_OBJ = $(patsubst %.cc, build/%.o, $(VTA_LIB_SRC))
 

vta/apps/pynq_rpc/start_rpc_server.sh

 #!/bin/bash
 export PYTHONPATH=${PYTHONPATH}:/home/xilinx/tvm/python
-export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/opt/python3.6/lib/python3.6/site-packages/pynq/lib/
+export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/opt/python3.6/lib/python3.6/site-packages/pynq/drivers/
 python -m  tvm.exec.rpc_server --load-library /home/xilinx/vta/lib/libvta.so

vta/examples/resnet18/pynq/imagenet_predict.py

@@ -29,7 +29,7 @@ BITSTREAM_FILE = 'vta.bit'
 for file in [TEST_FILE, CATEG_FILE, RESNET_GRAPH_FILE, RESNET_PARAMS_FILE, BITSTREAM_FILE]:
     if not os.path.isfile(file):
         print ("Downloading {}".format(file))
-        wget.download(url+file) 
+        wget.download(url+file)
 
 # Program the FPGA remotely
 assert tvm.module.enabled("rpc")
@@ -129,7 +129,6 @@ with nnvm.compiler.build_config(opt_level=3):
             sym, target, shape_dict, dtype_dict,
             params=params)
 
-remote = rpc.connect(host, port)
 temp = util.tempdir()
 lib.save(temp.relpath("graphlib.o"))
 remote.upload(temp.relpath("graphlib.o"))

vta/python/vta/build.py

@@ -52,4 +52,4 @@ def debug_mode(debug_flag):
 
 
 # Add a lower pass to sync uop
-build_module.BuildConfig.current.add_lower_pass = debug_mode(0)
+build_module.current_build_config().add_lower_pass = debug_mode(0)