GCC vs. Clang Benchmark Comparison At Varying Optimization Levels
Written by Michael Larabel in Software on 3 March 2016. Page 2 of 4. 15 Comments

First up is the HMmer scientific test.

At -O0, Clang was much faster than GCC for this scientific benchmark when not having to worry about compiler optimizations. However, at the higher optimization levels, the performance between GCC 5.3.1 and Clang 3.8 were neck-and-neck.

With the OpenMP-using GraphicsMagick test, GCC was faster than Clang regardless of the optimization flags utilized.

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