use 03 optimization
@@ -1365,7 +1365,7 @@ class GnuCompiler(Compiler):
if self.build.is_release:
self.c_flags.append('$OPTIMIZE')
- self.optimize = '-O2'
+ self.optimize = '-O3'
if self.build.with_ndebug:
self.c_defines.append('-DNDEBUG')
