https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82175
--- Comment #7 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- (In reply to Andrew Roberts from comment #6) > Thanks Richard, this is now ok, tested on armv7 and aarch64. > > However I do see differences in what is selected by march=native on arm > between 7.2.0 and 8.0.0.20171001. Is this as expected? Or is it a work in > progress? There seem to be significant changes... > > On aarch64: The only difference is: (< is gcc-7.2.0, > is gcc-8) > > < -mtls-size= [default] > --- > > -mtls-size= 24 > This issue has nothing to do with AArch64. that must be something else. > On armv7: (tested on RPI, and ODROID XU4) > RPI: > < -march= armv8-a+crc > --- > > -march= armv8-a+crc+simd (RPI) To be expected. The compiler now includes the FP and SIMD capabilities in the architecture string (instead of in -mfpu). > > ODROID XU4: > < -march= armv7ve > --- > > -march= armv7ve+vfpv3-d16 Likewise. > > Differences ommon to both RPI and ODROID XU4: > > -mbe32 [enabled] > > -mbe8 [disabled] > > < -mcpu= [default] > < -mfix-cortex-m3-ldrd [enabled] > --- > > -mcpu= > > -mfix-cortex-m3-ldrd [disabled] > > < -mrestrict-it [enabled] > --- > > -mrestrict-it [disabled] [...] How did you generate this list?
