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On clang/linux, we can use -march=native to automatically detect the archite. Oct 12, 2024-march=foo implies -mtune=foo unless you also specify a different -mtune. This is one reason why using -march is better than just enabling options like -mavx without doing anything about.

Oct 5, 2018for -o0, whether -march=native or -march= is the default still specifies the same family, so both are perfectly compatibly with -o0; As i understand it, -march=native will detect the isa and extensions to use from cpuid (which include model, family and stepping information). -march=xxx will use a baseline set of extensions and a.

Nov 24, 2023"i want change it to -march=x86-64 in cmake, how to do it? - find out how exactly pcl adds -march=native flag. Jul 27, 2022what are the differences and tradeoffs between -march=haswell, -march=core-avx2, and -mavx2 for compiling avx2 intrinsics?

I know that -mavx2 is a flag and -march=haswell/core-avx2 are. Gcc 4.2 and above support -march=native. -march=native applies additional settings beyond -march, specific to your cpu.

Clang -v -march=native -e - </dev/null) does is almost the same but the case is that the final output cannot be directly copied to use during compilation. Instead of manually selecting the optimization flags i'm using -march=native, which in theory should add all optimization flags applicable to the. Use -march=compatibility for best compatibility, or -march=native.