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gcc - How is -march different from -mtune? - Stack Overflow -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 tuning Caveat: -march=native on a CPU that GCC doesn't specifically recognize will still enable new instruction sets that GCC can detect, but will leave -mtune=generic Use a new enough GCC that knows about
Why is -march=native not enabled by default by compilers IDEs? For -O0, whether -march=native or -march=<generic> is the default still specifies the same family, so both are perfectly compatibly with -O0; and whenever another optimization level is specified, -march=native is beneficial to performance So, for me, the fact that -O0 is the default doesn't matter for -march 's default
c++ - What exactly does -march=native do? - Stack Overflow Gentoo Wiki told me the following: Warning: GCC 4 2 and above support -march=native -march=native applies additional settings beyond -march, specific to your CPU Unless you have a specific reaso
-march=haswell vs -march=core-avx2 vs -mavx2 - Stack Overflow What 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 architectures which just translate to a bunch of flags So -mavx2 is a subset of the other two But beyond that, how do I choose the right one for my application?
riscv cross compiler error: invalid -march= option: `rv64imafdc_zicsr GNU assembler version 2 38 (x86_64-linux-gnu) using BFD version (GNU Binutils for Ubuntu) 2 38 Assembler messages: Fatal error: invalid -march= option: `rv64imafdc_zicsr' Thanks for any response and help! Best regards Troy
What are my available march mtune options? - Stack Overflow Is there a way to get gcc to output the available -march=arch options? I'm getting build errors (tried -march=x86_64) and I don't know what my options are The compiler I'm using is a proprietary
c++ - equivalent of -march=native for msvc - Stack Overflow As far as I know, the compilation option for MSVC that tells the compiler to use special available instruction is arch On clang linux, we can use -march=native to automatically detect the archite
how to change -march=native compile flag added by PCL in cmake "I want change it to -march=x86-64 in cmake, How to do it? - Find out how exactly PCL adds -march=native flag If it does that via variable CMAKE_CXX_FLAGS, then you may try to modify that variable (but note about variables scoping rules) If PCL adds the flag to some property, then you may try modify that property CMake doesn't give you a control over combined compiler flags You need to
How do I format a date in JavaScript? - Stack Overflow You can also pull out the parts of a DateTimeFormat one-by-one using DateTimeFormat#format, but note that when using this method, as of March 2020, there is a bug in the ECMAScript implementation when it comes to leading zeros on minutes and seconds (this bug is circumvented by the approach above)