Mar 4, 2021 · 7 There are plenty of reasons why a code can be slower with -march=native, although this is quite exceptional. That being said, in your specific context, one possible …

Oct 5, 2018 · Why no march=native by default? As you have pointed out, besides producing binaries incompatibility with older CPUs, march=native isn't necessarily beneficial. It improves …

How to specify -march=native using pragmas (or otherwise) in gcc Asked 7 years, 9 months ago Modified 5 years, 4 months ago Viewed 4k times

Yes, GCC/clang -march=native detects ISA extensions supported by the host system and enables all of them. Is also detects what CPU it actually is, and enables -mtune=icelake-client or …

Dec 10, 2012 · Error: bad value for -march= switch Asked 12 years, 6 months ago Modified 9 years, 11 months ago Viewed 8k times

Jul 16, 2013 · I tried to set -march=i686+nommx and -march=i686,+nommx, but it's not correct! gcc reported error: error: bad value (i686,+nommx) for -march= switch I want to build my …

Jul 31, 2015 · How to fix error: bad value (native) for -march= switch and -mtune= switch? The problem is with -march=native. According to Ian Lance Taylor on GCC's mailing list (Ian is one …

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 …

unrecognized command-line option '-arch'; did you mean '-march='? Asked 4 years, 1 month ago Modified 1 year, 2 months ago Viewed 2k times

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 …