1、直接分析gcc汇编确认其是否存在runtime的检查是比较困难的，因此可以对向量化patch的dump进行检查，是否存在create runtime check？
missed: versioning for alias required: can't determine dependence between x[k_27] and x[i_28]
consider run-time aliasing test between x[k_27] and x[i_28]create runtime check for data references x[_2] and x[i_28]
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