Andre McCurdy wrote: > Although there may still be specific cases which can benefit from the > ARM instruction set, the Thumb2 instruction set is generally a better > default for armv7a class CPUs. Distros such as Debian and Fedora have > been targeting Thumb2 by default for some time. > > Note that setting ARM_INSTRUCTION_SET has no effect unless > TUNE_FEATURES contains "thumb" (which is controlled by the "t" suffix > in DEFAULTTUNE, e.g. armv7vehf-neon -vs- armv7vethf-neon, etc) so out > of tree machine configs may need to update their DEFAULTTUNE to take > advantage of this change.
I recently ran into some major problems due to thumb vs arm. It turns out glibc doesn't support systems with thumb disabled anymore. See this bug report for details: https://sourceware.org/bugzilla/show_bug.cgi?id=23031 This might be useful input for this discussion also. Jef Disclaimer This e-mail and its attachments is intended only for the person(s) or entity to which it is addressed. If you receive this e-mail by mistake, please delete this e-mail from your system and destroy all copies of it. It may contain confidential and/or privileged information. You should not copy it or use it for any purpose nor disclose its contents to any person unless allowed by a written document between the sender and the addressee. -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
