From d4e91a1987fb8c3bbb0af38749a98d4a30b7ef57 Mon Sep 17 00:00:00 2001
From: Yaman Umuroglu <maltanar@gmail.com>
Date: Tue, 20 Sep 2022 16:55:17 +0200
Subject: [PATCH] [InsertDWC] use impl_style=vivado if widths not divisible
---
src/finn/transformation/fpgadataflow/insert_dwc.py | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/finn/transformation/fpgadataflow/insert_dwc.py b/src/finn/transformation/fpgadataflow/insert_dwc.py
index 9817f2e3d..efc179923 100644
--- a/src/finn/transformation/fpgadataflow/insert_dwc.py
+++ b/src/finn/transformation/fpgadataflow/insert_dwc.py
@@ -81,6 +81,12 @@ class InsertDWC(Transformation):
dwc_in_width = n0.get_outstream_width()
# determine dwc outwidth
dwc_out_width = n1.get_instream_width()
+ larger_width = max(dwc_in_width, dwc_out_width)
+ smaller_width = min(dwc_in_width, dwc_out_width)
+ if larger_width % smaller_width == 0:
+ impl_style = "hls"
+ else:
+ impl_style = "vivado"
# determine shape for dwc
dwc_shape = n0.get_normal_output_shape()
@@ -105,6 +111,7 @@ class InsertDWC(Transformation):
inWidth=dwc_in_width,
outWidth=dwc_out_width,
dataType=str(dtype.name),
+ impl_style=impl_style,
)
# insert dwc
graph.node.insert(node_ind + 1, dwc_node)
--
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