Why is -march=native not enabled by default by compilers/IDEs?
Oct 5, 2018 · 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 …
gcc: Differences between -march=native and -march=<specific arch>
How does -march=native choose which instruction sets to enable and which to disable? I have the following conjecture: -march=native will be using CPUID instructions to calculate supported …
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...
-march=haswell vs -march=core-avx2 vs -mavx2 - Stack Overflow
Jul 27, 2022 · 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 …
Cannot find suitable multilib set for '-march=rv32imafd_zicntr_zicsr ...
May 17, 2025 · When I configured and make the GCC by " sudo ../configure --prefix=/opt/riscv --target=riscv32-unknown-elf --disable-multilib --with-multilib-generator="rv32gc_zicntr ...
unrecognized command-line option '-arch'; did you mean '-march='?
unrecognized command-line option '-arch'; did you mean '-march='? Asked 4 years, 10 months ago Modified 1 year, 11 months ago Viewed 3k times
How to see which flags -march=native will activate?
Mar 29, 2011 · Instead of manually selecting the optimization flags I'm using -march=native, which in theory should add all optimization flags applicable to the hardware I'm compiling on.
How to know all supported values for clang -march argument?
Mar 11, 2025 · Using Clang 16.0 or later, I would like to know what values could be used for the -march argument. The command clang --print-supported-cpus shows for -mcpu=, but I see no alternative for …
gcc - How is -march different from -mtune? - Stack Overflow
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 …
riscv cross compiler error: invalid -march= option: `rv64imafdc_zicsr'
Sep 25, 2024 · riscv cross compiler error: invalid -march= option: `rv64imafdc_zicsr' Asked 1 year, 7 months ago Modified 1 year, 5 months ago Viewed 344 times