The problem is that expecting code to just be randomly faster by compiling it with ICC is a pointless endeavor. For numerical code, ICC is amazing. But that's

The problem is that expecting code to just be randomly faster by compiling it with ICC is a pointless endeavor. For numerical code, ICC is amazing. But that's mainly because the automatic vectorization is far beyond anything clang can spit out (which is already better than gcc at automatic vectorization). Even then, icc really benefits when you use its proprietary pragmas for hints. The VTUNE profiler is amazing though