configure: loongson disable expensive optimizations in gcc O3 optimization
With gcc-4.9.2 loongson faild in test fate-dca, this is caused by option -fexpensive-optimizations in -O3 optimization. We disable it temporarily before the bug been fixed up. Signed-off-by:ZhouXiaoyong <zhouxiaoyong@loongson.cn> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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