[Development] Implicit VFMADD support (Was: Updating x86 SIMD support in Qt)
Konstantin Shegunov
kshegunov at gmail.com
Mon Jan 24 18:07:16 CET 2022
Related, but somewhat offtopic for the original thread.
Do we get `-mfma` (or equivalent) added, whenever supported, while we build
Qt. Is it part of the feature detection? Because I want `std::fma` to emit
the instruction(s), but I've noticed that in the code I test a bugfix with
I must force the issue by passing the flag explicitly; even with -O2 I get
a function call otherwise.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.qt-project.org/pipermail/development/attachments/20220124/3a314bbe/attachment.htm>
More information about the Development
mailing list