Enable autovectorization for single-thread algorithms#22
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When the build system detects the native build environment, i.e. compile and run PSF simulation on the same machine, enable compiler option `-fmarch=native` so that the compiler can detect the CPU's vectorization capabilities. Reference: https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html
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When the build system detects the native build environment, i.e. compile and run PSF simulation on the same machine, enable compiler option
-fmarch=nativeso that the compiler can detect the CPU's vectorization capabilities.Reference: https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html