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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?
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
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
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)
Specify `--march` in a Spring Boot Native Build - Stack Overflow -march: generate instructions for a specific machine type Defaults to x86-64-v3 on AMD64 and armv8-a on AArch64 Use -march=compatibility for best compatibility, or -march=native for best performance if a native executable is deployed on the same machine or on a machine with the same CPU features To list all available machine types, use
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