merge-metric-csvs.py: Use left join and use 0 for default value in result.

Change-Id: I218d041551d5d6c8e328380bae64798fe1155cee

1 files changed, 9 insertions, 2 deletions

diff --git a/merge-metric-csvs.py b/merge-metric-csvs.py
index c8aeb29..c74c7c6 100755
--- a/merge-metric-csvs.py
+++ b/merge-metric-csvs.py
@@ -10,8 +10,15 @@ def main():
     assert len(sys.argv) == 3
     df1 = pd.read_csv(sys.argv[1])
     df2 = pd.read_csv(sys.argv[2])
-    result = pd.merge(df1, df2, on=["benchmark", "symbol"])
-    result.to_csv(sys.stdout, index=False) 
+
+    # Merge metric values for symbols common to perf and metric file,
+    # and initialize remaining symbols from perf data to default metric value".
+    # FIXME: Currently, hardcoded for vect metric.
+    result = pd.merge(df1, df2, how='left', on=["benchmark", "symbol"])
+    result.fillna(value=0, inplace=True)
+    result["num_vect_loops"] = result["num_vect_loops"].astype(int)
+
+    result.to_csv(sys.stdout, index=False)
 
 if __name__ == "__main__":
     main()