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I am compiling my code using following command:
gcc -O3 -ftree-vectorizer-verbose=6 -msse4.1 -ffast-math
With this all the optimizations are enabled.
But I want to disable vectorization while keeping the other optimizations.
Most of the GCC switches can be used with a
noprefix to disable their behavior. Try with-fno-tree-vectorize(after-O3on the command line).