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-rw-r--r--numpy/distutils/fcompiler/ibm.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/numpy/distutils/fcompiler/ibm.py b/numpy/distutils/fcompiler/ibm.py
index cbbf52bf7..1ec084027 100644
--- a/numpy/distutils/fcompiler/ibm.py
+++ b/numpy/distutils/fcompiler/ibm.py
@@ -86,7 +86,7 @@ class IBMFCompiler(FCompiler):
return opt
def get_flags_opt(self):
- return ['-O5']
+ return ['-O3']
if __name__ == '__main__':
log.set_verbosity(2)